Update Generated Doc Files

ReadMe.md

.github/workflows/commit.yml

@@ -0,0 +1,31 @@
+name: Commit Build
+
+on:
+  push:
+    branches: 
+      - master
+    tags-ignore:
+      - v*
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: rlespinasse/github-slug-action@1.1.0
+        
+      - uses: actions/checkout@v2
+          
+      - name: Build
+        run: |
+          sudo apt-get install libncurses-dev
+          make
+          make clean
+          rm -rf .git*
+        
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v1
+        with:
+          name: RomWBW-${{env.GITHUB_REF_SLUG}}-${{env.GITHUB_SHA_SHORT}}
+          path: .

.github/workflows/release.yml

@@ -0,0 +1,51 @@
+name: Release Build
+
+on:
+  release:
+    types: published
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      
+      - name: Create Package Label
+        run: |
+          LABEL=`echo "$GITHUB_REF" | sed "s|^refs/tags/||"`
+          echo "::set-env name=PKGLBL::$LABEL"
+         
+      - name: Display Diagnostics
+        run: |
+          echo PKGLBL: "$PKGLBL"
+          echo Upload URL: "${{github.event.release.upload_url}}"
+          echo GITHUB_TOKEN: "${{secrets.GITHUB_TOKEN}}"
+          
+      - name: Build
+        run: |
+          sudo apt-get install libncurses-dev
+          make
+          make clean
+          rm -rf .git*
+      
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v1
+        with:
+          name: RomWBW-${{env.PKGLBL}}-Package
+          path: .
+      
+      - name: Create Package Archive
+        run: |
+            zip -r Package.zip .
+          
+      - name: Upload Release Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+        with:
+          upload_url: ${{github.event.release.upload_url}}
+          asset_path: Package.zip
+          asset_name: RomWBW-${{env.PKGLBL}}-Package.zip
+          asset_content_type: application/zip

.gitignore

@@ -0,0 +1,96 @@
+# Not sure what patterns to apply
+# So ignoring all generated files explicitly
+
+**/*.[Bb][Ii][Nn]
+**/*.[Cc][Oo][Mm]
+**/*.[Rr][Oo][Mm]
+**/*.com
+**/*.eeprom
+**/*.hex
+**/*.img
+**/*.lib
+**/*.lst
+**/*.o
+**/*.prn
+**/*.rel
+**/*.sym
+**/*.sys
+**/*.tmp
+**/*/font*.asm
+
+Binary/**/*.mym
+Binary/**/*.pt3
+
+Source/**/eeprom
+Source/Apps/Assign.com
+Source/Apps/FDU/FDU.COM
+Source/Apps/Format.com
+Source/Apps/IntTest.com
+Source/Apps/Mode.com
+Source/Apps/OSLdr.com
+Source/Apps/RTC.com
+Source/Apps/SysCopy.com
+Source/Apps/SysGen.com
+Source/Apps/Talk.com
+Source/Apps/Timer.com
+Source/Apps/Tune/Tune.com
+Source/BPBIOS/bpsys.bak
+Source/BPBIOS/bpsys.dat
+Source/BPBIOS/def-ww.lib
+Source/CPM3/bios3.spr
+Source/CPM3/bnkbios3.spr
+Source/CPM3/gencpm.dat
+Source/CPM3/options.lib
+Source/CPM3/zpmbios3.spr
+Source/HBIOS/Blank512KB.dat
+Source/HBIOS/build.inc
+Source/Images/blank144
+Source/Images/blankhd
+Source/Prop/Spin/ParPortProp.list
+Source/Prop/Spin/PropIO.list
+Source/Prop/Spin/PropIO2.list
+Source/ZPM3/bnkbios3.spr
+Source/ZPM3/gencpm.com
+Source/ZPM3/gencpm.com
+Source/ZPM3/gencpm.dat
+
+Tools/Linux
+Tools/Darwin
+
+Tools/unix/bin2asm/bin2asm
+Tools/unix/cpmtools/cpmchattr
+Tools/unix/cpmtools/cpmchmod
+Tools/unix/cpmtools/cpmcp
+Tools/unix/cpmtools/cpmls
+Tools/unix/cpmtools/cpmrm
+Tools/unix/cpmtools/fsck.cpm
+Tools/unix/cpmtools/fsed.cpm
+Tools/unix/cpmtools/mkfs.cpm
+Tools/unix/lzsa/lzsa
+Tools/unix/uz80as/uz80as
+Tools/unix/zx/config.h
+Tools/unix/zx/zx
+
+!Source/ver.lib
+!Source/Apps/FAT/FAT.COM
+!Source/BPBIOS/bpbuild.com
+!Source/BPBIOS/movp112.com
+!Source/BPBIOS/Z34RCP11/cledinst.com
+!Source/BPBIOS/Z34RCP11/cledsave.com
+!Source/Fonts
+!Source/Images/**/*.[Cc][Oo][Mm]
+!Source/RomDsk/**/*.[Cc][Oo][Mm]
+!Source/UBIOS/FSFAT.BIN
+!Source/UBIOS/UNA-BIOS.BIN
+!Source/ZCCP/*.[Cc][Oo][Mm]
+!Source/ZCPR-DJ/*.[Cc][Oo][Mm]
+!Source/ZPM3/*.[Cc][Oo][Mm]
+!Source/ZSDOS/*.[Cc][Oo][Mm]
+!Tools/cpm/bin
+!Tools/unix/zx
+!Tools/zx
+
+Source/ZPM3/gencpm.com
+Source/ZPM3/startzpm.com
+Source/ZPM3/zccp.com
+Source/ZPM3/zpmldr.com

Binary/Apps/Clean.cmd

@@ -0,0 +1,6 @@
+@echo off
+setlocal
+
+if exist *.com del *.com
+if exist Tunes\*.pt? del Tunes\*.pt?
+if exist Tunes\*.mym del Tunes\*.mym

Binary/Apps/Makefile

@@ -0,0 +1,10 @@
+TOOLS = ../../Tools
+MOREDIFF := $(shell $(TOOLS)/unix/casefn.sh *.com Tunes/*)
+
+include $(TOOLS)/Makefile.inc
+
+all::
+	mkdir -p Tunes
+
+clobber::
+	rm -f *.bin *.com *.img *.rom *.pdf *.log *.eeprom *.COM *.BIN Tunes/*.mym Tunes/*.pt?

Binary/Apps/ReadMe.txt

@@ -0,0 +1,14 @@
+***********************************************************************
+***                                                                 ***
+***                          R o m W B W                            ***
+***                                                                 ***
+***                    Z80/Z180 System Software                     ***
+***                                                                 ***
+***********************************************************************
+
+This directory contains the executable application files that
+are specific to RomWBW.  The source for these applications is found
+in the Source\Apps directory of the distribution.
+
+The Tunes subdirectory contains some sample ProTracker and MYM sound
+files that can be played by the TUNE application.

Binary/Apps/Tunes/ReadMe.txt

@@ -0,0 +1,10 @@
+***********************************************************************
+***                                                                 ***
+***                          R o m W B W                            ***
+***                                                                 ***
+***                    Z80/Z180 System Software                     ***
+***                                                                 ***
+***********************************************************************
+
+This directory contains some sample ProTracker and MYM sound
+files that can be played by the TUNE application.

Binary/Clean.cmd

@@ -1,8 +1,12 @@
 @echo off
+setlocal
+
 if exist *.bin del *.bin
 if exist *.com del *.com
 if exist *.img del *.img
 if exist *.rom del *.rom
 if exist *.pdf del *.pdf
 if exist *.log del *.log
-if exist *.eeprom del *.eeprom
+if exist *.eeprom del *.eeprom
+
+setlocal & cd Apps && call Clean || exit /b 1 & endlocal

Binary/DiskList.txt

@@ -0,0 +1,167 @@
+***********************************************************************
+***                                                                 ***
+***                          R o m W B W                            ***
+***                                                                 ***
+***                    Z80/Z180 System Software                     ***
+***                                                                 ***
+***********************************************************************
+
+This directory ("Binary") is part of the RomWBW System Software 
+distribution archive.  Refer to the ReadMe.txt file in this 
+directory for more information on the overall contents of the 
+directory.
+
+RomWBW includes a set of disk images that are ready to copy onto
+a floppy or hard/CF/SD disk.  You can use your modern computer
+(Windows/Linux/Mac) to copy the disk image file onto your disk
+media.  The disk media will then be ready to use in your RomWBW
+System.
+
+A description of the disk images is provided later in this file.
+For more information on the creatioin of these images including
+instructions for customizing them or creating your own, refer to
+the ReadMe.txt file in the Source\Images directory.
+
+Installing Images
+-----------------
+
+The following instructions apply to Windows computers.  Alternatively,
+you can use the "dd" command on Linux or Mac.
+
+First of all, a MAJOR WARNING!!!!  The tools described below are 
+quite capable of obliterating your running Windows system drive.  Use 
+with extreme caution and make sure you have backups.
+
+To install a floppy image on floppy media, you can use the tool 
+called RaWriteWin.  This tool is included in the Tools directory of 
+the distribution. This tool will write your floppy image (fd_xxx.img) 
+to a floppy disk using a raw block transfer.  The tool is GUI based 
+and it's operation is self explanatory.
+
+To install a hard disk image on a CF card or SD card, you must have 
+the appropriate media card slot on your computer. If you do, you can 
+use the tool called Win32DiskImager. This tool is also included in 
+the Tools directory of the distribution.  It will write your 
+hard disk image (hd_xxx.img) to the designated media card.  This tool 
+is also GUI based and self explanatory.
+
+The use of the SIMH emulator is outside of the scope of this document.  
+However, if you use SIMH, you will find that you can attach the hard 
+disk images to the emulator with lines such as the following in your 
+SIMH configuration file:
+
+  | attach hdsk0 hd_cpm22.img
+  | set hdsk0 format=HDSK
+  | set hdsk0 geom=T:2048/N:256/S:512
+  | set hdsk0 wrtenb
+  
+Making Disk Images Bootable
+---------------------------
+
+The Operating System disk images below are ready to boot by the
+RomWBW Boot Loader.  However, if you update your RomWBW ROM, then
+you should also update the system tracks of your bootable disk
+images.  You would use SYSCOPY to do this.  SYSCOPY can also be
+used to make a disk bootable if it is not already bootable.
+
+You would use a command like the following to make drive C bootable:
+
+  | B>SYSCOPY C:=CPM.SYS
+
+The system file to use depends on the operating system you are trying
+to boot from the slice you are initializing with SYSCOPY:
+
+  CP/M 2.2 - cpm.sys
+  ZSDOS 1.1 - zsys.sys
+  CP/M 3 - cpmldr.sys
+  ZPM3 - cpmldr.sys
+  
+Slices
+------
+
+A RomWBW CP/M filesystem is fixed at 8MB.  This is because it is the 
+largest size filesystem supported by all common CP/M variants. Since 
+all modern hard disks (including SD Cards and CF Cards) are much 
+larger than 8MB, RomWBW supports the concept of "slices".  This 
+simply means that you can concatenate multiple CP/M filesystems (up 
+to 256 of them) on a single physical hard disk and RomWBW will allow 
+you to assign drive letters to them and treat them as multiple 
+independent CP/M drives.
+
+With the exception of the hd_combo image, each of the disk images
+includes a single CP/M file system (i.e., a single slice).  However,
+you can easily create a multi-slice disk image by merely concatenating 
+multiple images together.  For example, if you wanted to create a 2 
+slice disk image that has ZSDOS in the first slice and Wordstar in 
+the second slice, you could use the following command from a Windows 
+command prompt:
+
+  | C:\RomWBW\Binary>copy /b hd_zsdos.img + hd_ws.img hd_multi.img
+
+You can now write hd_multi.img onto your SD or CF Card and you will 
+have ZSDOS in the first slice and Wordstar in the second slice.
+
+The hd_combo disk image is an example of this.  It contains several
+slices in one image file.  The contents of this special disk image
+are described below.
+
+The concept of slices applies ONLY to hard disks.  Floppy disks are 
+not large enough to support multiple slices.
+
+Disk Image Contents
+-------------------
+
+What follows is a brief description of the contents of the
+disk images automatically provided in the RomWBW distribution.
+Note that all of the OS images include the RomWBW custom
+support apps.
+
+cpm22 - DRI CP/M 2.2 (Bootable Floppy and Hard Disk)
+
+  Standard DRI CP/M 2.2 distribution files along with a few commonly
+  used utilities.
+
+zsdos - ZCPR1 + ZSDOS 1.1 (Bootable Floppy and Hard Disk)
+
+  Contains ZCPR1 and ZSDOS 1.1.  This is roughly equivalent to the
+  ROM boot contents, but provides a full set of the applications
+  and related files that would not all fit on the ROM drive.
+
+nzcom - NZCOM (Bootable Floppy and Hard Disk)
+
+  Standard NZCOM distribution.  Note that you will need to run the
+  NZCOM setup before this will run properly.  You will need
+  to refer to the NZCOM documentation.  
+
+cpm3 - DRI CP/M3 (Bootable Floppy and Hard Disk)
+
+  Standard DRI CP/M 3 adaptation for RomWBW that is ready to run.
+  It can be started by running CPMLDR.
+
+zpm3 - ZPM3 (Bootable Floppy and Hard Disk)
+
+  Simeon Cran's ZCPR 3 compatible OS for CP/M 3 adapted for RomWBW and 
+  ready to run.  It can be started by running CPMLDR (which seems 
+  wrong, but ZPMLDR is somewhat broken).
+
+ws4 - WordStar 4 (Floppy and Hard Disk)
+
+  Micropro Wordstar 4 full distribution.  This image is not bootable
+  and is intended to be added as an additional slice to an OS image.
+
+bp - BPBIOS (Hard Disk only)
+
+  Adaptation of BPBIOS for RomWBW.  This is NOT complete and NOT
+  useable in it's current state.
+
+combo - Multi-Boot Combination (Bootable Hard Disk)
+
+  A pre-created combo image that contains the following slices.  The
+  slices are identical to the individual images listed above.
+
+    Slice 0: cpm22 (bootable)
+    Slice 1: zsdos (bootable)
+    Slice 2: nzcom (bootable)
+    Slice 3: cpm3 (bootable)
+    Slice 4: zpm3 (bootable)
+    Slice 5: ws4 (not bootable)

Binary/Makefile

@@ -0,0 +1,8 @@
+TOOLS = ../Tools
+MOREDIFF := $(shell $(TOOLS)/unix/casefn.sh *.img *.rom *.com *.eeprom)
+SUBDIRS = Apps
+
+include $(TOOLS)/Makefile.inc
+
+clobber::
+	rm -f *.bin *.com *.img *.rom *.pdf *.log *.eeprom

Binary/ReadMe.txt

@@ -17,21 +17,30 @@ released the directory is populated with the default output files.
 However, the output of custom builds will be placed in this directory 
 as well.
 
+If you only see a few files in this directory, then you downloaded 
+just the source from GitHub.  To retrieve the full release download 
+package, go to https://github.com/wwarthen/RomWBW.  On this page, 
+look for the text "XX releases" where XX is a number. Click on this 
+text to go to the releases page.  On this page, you will see the 
+latest releases listed.  For each release, you will see a package 
+file called something like "RomWBW-2.9.0-Package.zip".  Click on the 
+package file for the release you want to download.
+
 ROM Firmware Images (<plt>_<cfg>.rom)
 -------------------------------------
 
 The files with a ".rom" extension are binary images ready to program 
 into an appropriate PROM.  These files are named with the format 
 <plt>_<cfg>.rom. <plt> refers to the primary platform such as Zeta, 
-N8, Mark IV, etc.  <cfg> refers to the specific configuration.  When 
-released, there will be a standard configuration ("std") for each 
+N8, Mark IV, etc.  <cfg> refers to the specific configuration.  In 
+general, there will be a standard configuration ("std") for each 
 platform.  So, for example, the file called MK4_std.rom is a ROM 
 image for the Mark IV with the standard configuration. If a custom 
 configuration called "custom" is created and built, a new file called 
 MK4_custom.rom will be added to this directory.
 
 Documentation of the pre-built ROM Images is contained in the 
-RomList.txt file.
+RomList.txt file in this directory.
 
 ROM Executable Images (<plt>_<cfg>.com)
 ---------------------------------------
@@ -39,22 +48,16 @@ ROM Executable Images (<plt>_<cfg>.com)
 When a ROM image (".rom") is created, an executable version of the 
 ROM is also created.  These files have the same naming convention as 
 the ROM Image files, but have the extension ".com".  These files can 
-be copied to a working system and run like a normal application.
+be copied to a working system and run like a normal CP/M application.
 
 When run on the target system, they install in RAM just like they had 
-been programmed into the ROM.  This allows a new ROM build to be 
-tested without reprogramming the actual ROM.
+been loaded from  ROM.  This allows a new ROM build to be tested
+without reprogramming the actual ROM.
 
-ROM Binary Images (<plt>_<cfg>.img)
------------------------------------
-
-Also when a ROM image is created, a third variation of the ROM is 
-created again with the same naming convention, but with the extension 
-of .img.  These files are similar to the .com files in that they can 
-be used to test a ROM build without actually programming a new ROM.  
-The .img files are specifically for loading via UNA from a FAT file 
-system.  The functionality of the UNA FAT file system loader is 
-beyond the scope of this document.
+WARNING: In a few cases the .com file is too big to load.  If you get 
+a message like "Full" or "BAD LOAD" when trying to load one of the 
+.com files, it is too big.  In these cases, you will not be able to 
+test the ROM prior to programming it.
 
 VDU ROM Image (vdu.rom)
 -----------------------
@@ -63,7 +66,7 @@ The VDU video board requires a dedicated onboard ROM containing the
 font data.  The "vdu.rom" file contains the binary data to program 
 onto that chip.
 
-Disk Images (fd*.img, hd*.img)
+Disk Images (fd_*.img, hd_*.img)
 ------------------------------
 
 RomWBW includes a mechanism for generating floppy disk and hard disk 
@@ -74,23 +77,28 @@ RomWBW-based system.
 Essentially, these files contain prepared floppy and hard disk images 
 with a large set of programs and related files.  By copying the 
 contents of these files to appropriate media as described below, you 
-can quickly create ready-to-use media.
+can quickly create ready-to-use media.  Win32DiskImager or
+RawWriteWin can be used to copy images directly to media.  These
+programs are included in the RomWBW Tools directory.
 
-The fd*.img files are floppy disk images.  They are sized for 1.44MB 
+The fd_*.img files are floppy disk images.  They are sized for 1.44MB 
 floppy media and can be copied to actual floppy disks using 
 RawWriteWin (as long as you have access to a floppy drive on your 
 Windows computer).  The resulting floppy disks will be usable on any 
 RomWBW-based system with floppy drive(s).
 
-Likewise, the hd*.img files are hard disk images.  Each file is 
+Likewise, the hd_*.img files are hard disk images.  Each file is 
 intended to be copied to the start of any type of hard disk media 
 (typically a CF Card or SD Card). The resulting media will be usable 
 on any RomWBW-based system that accepts the corresponding media type.
 
-Note that the contents of the floppy/hard disk images are created by 
+Documentation of the pre-built disk images is contained in the 
+DiskList.txt file in this directory.
+
+The contents of the floppy/hard disk images are created by 
 the BuildImages.cmd script in the Source directory.  Additional 
 information on how to generate custom disk images is found in the 
-Source\Images directory.
+Source\Images ReadMe.txt file.
 
 Propeller ROM Images (*.eeprom)
 -------------------------------
@@ -105,3 +113,10 @@ indicates which file targets each of the Propeller board variants:
 
 Refer to the board documentation of the boards for more information 
 on how to program the EEPROMs on these boards.
+
+Apps Directory
+--------------
+
+The Apps subdirectory contains the executable application files that
+are specific to RomWBW.  The source for these applications is found
+in the Source\Apps directory of the distribution.

Binary/RomList.txt

@@ -6,68 +6,84 @@
 ***                                                                 ***
 ***********************************************************************
 
-This directory ("Binary") is part of the RomWBW System Software 
-distribution archive.  Refer to the ReadMe.txt file in this 
-directory for more information on the overall contents of the 
+This directory ("Binary") is part of the RomWBW System Software
+distribution archive.  Refer to the ReadMe.txt file in this
+directory for more information on the overall contents of the
 directory.
 
-When distributed, RomWBW contains a set of pre-built ROM images that 
-are ready to program onto the EEPROM of any of the Z80/Z180 based 
-RetroBrew Computers CPU boards.  Additionally, any custom built ROM 
+When distributed, RomWBW contains a set of pre-built ROM images that
+are ready to program onto the EEPROM of any of the Z80/Z180 based
+RetroBrew Computers CPU boards.  Additionally, any custom built ROM
 images will be placed in this directory.
 
-All of the pre-built ROM images are 512KB.  This size is compatible 
-with all of the Z80/Z180 systems.  Some systems can accept different 
-size ROM images.  Creating alternative sizes requires a custom ROM 
+All of the pre-built ROM images are 512KB.  This size is compatible
+with all of the Z80/Z180 systems.  Some systems can accept different
+size ROM images.  Creating alternative sizes requires a custom ROM
 build (see ReadMe.txt in the Source directory).
 
-It is critical that the right ROM Imgae be selected for the target 
-platform being used.  The table below indicates the correct ROM 
+It is critical that the right ROM Imgae be selected for the target
+platform being used.  The table below indicates the correct ROM
 image to use for each platform:
 
 	SBC V1/V2	SBC_std.rom
+	SBC SimH	SBC_simh.rom
 	Zeta V1		ZETA_std.rom
 	Zeta V2		ZETA2_std.rom
 	N8		N8_std.rom
 	Mark IV		MK4_std.rom
+	RC2014 w/ Z80	RCZ80_std.rom
+	RC2014 w/ Z180	RCZ180_nat.rom	(native Z180 memory addressing)
+	RC2014 w/ Z180	RCZ180_ext.rom	(external 512K RAM/ROM module)
+	SC-series	SC126, SC130
+	Easy Z80	EZZ180_std.rom
+	Dyno		DYNO_std.rom
 
-You will find there is one additional ROM image called 
-"UNA_std.rom". This ROM image is an UNA-based RomWBW ROM image.  As 
-such, this ROM image can be used on any Z80/Z180 platform supported 
-by John Coffman's UNA BIOS.  Refer to RetroBrew Computers Wiki for 
+You will find there is one additional ROM image called
+"UNA_std.rom". This ROM image is an UNA-based RomWBW ROM image.  As
+such, this ROM image can be used on any Z80/Z180 platform supported
+by John Coffman's UNA BIOS.  Refer to RetroBrew Computers Wiki for
 more information on UNA hardware support.
 
-For each of the ROM Images (".rom"), there are corresponding files 
-with the extensions of ".com" and ".img".  The .com variant can be 
-copied to a functional RomWBW-based system and executed like a 
-normal application under CP/M or Z-System. This will load the new 
-ROM on-the-fly.  It is an excellent way to test a ROM Image before 
-actually burning it.  Similarly, the .img files can be loaded using 
+For each of the ROM Images (".rom"), there are corresponding files
+with the extensions of ".com" and ".img".  The .com variant can be
+copied to a functional RomWBW-based system and executed like a
+normal application under CP/M or Z-System. This will load the new
+ROM on-the-fly.  It is an excellent way to test a ROM Image before
+actually burning it.  Similarly, the .img files can be loaded using
 the UNA FAT loader for testing.
 
-All of the standard ROM Images are configured with:
+WARNING: In a few cases the .com file is too big to load.  If you get
+a message like "Full" or "BAD LOAD" when trying to load one of the
+.com files, it is too big.  In these cases, you will not be able to
+test the ROM prior to programming it.
+
+All of the standard ROM Images are configured for:
  - 512KB ROM Disk
  - 512KB RAM Disk
- - 38.4Kbps baud serial console
+ - 38.4Kbps baud serial console (*)
  - Auto-discovery of all serial ports
 
-All hard disk type devices (IDE, PPIDE, CF Card, SD Card) will be 
-automatically assigned two drive letters per device.  The drive 
-letters will refer to the first 2 slices of the device. The ASSIGN 
-command can be used to display and reassign drives to disk devices 
+* RC2014 and Stephen Cousins' kits run at 115,200Kbps baud
+
+All hard disk type devices (IDE, PPIDE, CF Card, SD Card) will be
+automatically assigned two drive letters per device.  The drive
+letters will refer to the first 2 slices of the device. The ASSIGN
+command can be used to display and reassign drives to disk devices
 and slices as desired.
 
 Standard ROM Image Notes
 ------------------------
 
-The standard ROM images will detect and install support for certain 
-devices and peripherals that are on-board or frequently used with 
-each platform as documented below.  If the device or peripheral is 
-not detected at boot, the ROM will simply bypass support 
+The standard ROM images will detect and install support for certain
+devices and peripherals that are on-board or frequently used with
+each platform as documented below.  If the device or peripheral is
+not detected at boot, the ROM will simply bypass support
 appropriately.
 
-SBC:
- - Includes support for PPIDE/CF Card(s) connected to on-board    
+SBC (SBC_std.rom):
+ - CPU speed is detected at startup
+ - Console on onboard UART serial port at 38400 baud
+ - Includes support for PPIDE/CF Card(s) connected to on-board
    parallel port.
  - Includes support for CVDU and VGA3 boards.  If detected at
    startup, support for video and keyboard is installed
@@ -83,7 +99,14 @@ SBC:
    circuit which is likely to cause system instability.  SBC
    V2 does not have this issue.
 
-ZETA/ZETA2:
+SBC (SBC_simh.rom):
+ - SBC variant customized to run under SimH
+ - Implments two emulated SimH hard disk images
+ - Uses SimH RTC
+
+ZETA (ZETA_std.rom):
+ - CPU speed is detected at startup
+ - Console on onboard UART serial port at 38400 baud
  - Includes support for on-board floppy disk controller and
    two attached floppy disks.
  - Auto-detects ParPortProp and includes support for it if it
@@ -93,7 +116,22 @@ ZETA/ZETA2:
    on-board serial port, if JP1 is open, console will go to
    ParPortProp video and keyboard ports.
 
-N8:
+ZETA2 (ZETA2_std.rom):
+ - CPU speed is detected at startup
+ - Console on onboard UART serial port at 38400 baud
+ - Includes support for on-board floppy disk controller and
+   two attached floppy disks.
+ - Auto-detects ParPortProp and includes support for it if it
+   is attached.
+ - Uses CTC to generate periodic timer interrupts.
+ - If ParPortProp is installed, initial console output is
+   determined by JP1.  If JP1 is shorted, console will go to
+   on-board serial port, if JP1 is open, console will go to
+   ParPortProp video and keyboard ports.
+
+N8 (N8_std.rom):
+ - CPU speed is detected at startup
+ - Console on Z180 onboard primary ASCI serial port at 38400 baud
  - Includes support for on-board floppy disk controller and
    two attached floppy disks.
  - Includes support for on-board TMS9918 video and keyboard
@@ -101,11 +139,80 @@ N8:
  - Includes support for on-board SD Card as hard disk and
    assumes a production level N8 board (date code >= 2312).
 
-MK4:
+MK4 (MK4_std.rom):
+ - CPU speed is detected at startup
+ - Console on Z180 onboard primary ASCI serial port at 38400 baud
  - Includes support for on-board IDE port (CF Card via adapter).
  - Includes support for on-board SD Card port.
  - Auto-detects PropIO or PropIO V2 and installs associated
    video, keyboard and SD Card support if present.
  - Includes support for CVDU and VGA3 boards.  If detected at
    startup, support for video and keyboard is installed
-   including VT-100/ANSI terminal emulation. 
+   including VT-100/ANSI terminal emulation.
+
+RCZ80 (RCZ80_std.rom):
+ - Assumes CPU oscillator of 7.3728 MHz
+ - Requires 512K RAM/ROM module
+ - Auto detects Serial I/O Module (ACIA) and Dual Serial
+   Module (SIO/2).  Either one may be used.
+ - Console on whichever serial module is installed,
+   but will use the SIO/2 if both are installed.  Baud
+   rate is determined by hardware, but normally 115200.
+ - Includes support for RC2014 Compact Flash Module
+ - Support for RC2014 PPIDE Module may be enabled in config
+ - Support for Scott Baker SIO board may be enabled in config
+ - Support for Scott Baker floppy controllers (SMC & WDC) may
+   be enabled in config
+
+RCZ80 w/ KIO (RCZ80_kio.rom):
+ - Assumes CPU oscillator of 7.3728 MHz
+ - Requires 512K RAM/ROM module
+ - Requires KIO module
+ - Console on KIO primary serial port at 115200 baud
+ - Includes support for RC2014 Compact Flash Module
+ - Includes support for RC2014 PPIDE Module
+ - Support for Scott Baker SIO board may be enabled in config
+ - Support for Scott Baker floppy controllers (SMC & WDC) may
+   be enabled in config
+
+RCZ180 (RCZ180_nat.rom & RCZ180_ext.rom):
+ - Assumes CPU oscillator of 18.432 MHz
+ - Console on Z180 onboard primary ASCI serial port at 115200 baud
+ - Includes support for RC2014 Compact Flash Module
+ - Includes support for RC2014 PPIDE Module
+ - Support for alternative serial modules may be enabled in config
+ - Support for Scott Baker floppy controllers (SMC & WDC) may
+   be enabled in config
+ - You must pick the _nat or _ext variant depending on which
+   memory module you are using:
+   - RCZ180_nat.rom uses the built-in Z180 memory manager
+     for use with memory modules allow direct physical
+     addressing of memory, such as the SC119
+   - RCZ180_ext.rom uses external bank management to access
+     memory, such as the 512K RAM/ROM module.
+
+SCZ180 (SCZ180_126.rom, SCZ180_130.rom, SCZ180_131.rom):
+ - Assumes CPU oscillator of 18.432 MHz
+ - Console on Z180 onboard primary ASCI serial port at 115200 baud
+ - Includes support for RC2014 Compact Flash Module
+ - Includes support for RC2014 PPIDE Module
+ - Support for alternative serial modules may be enabled in config
+ - Support for Scott Baker floppy controllers (SMC & WDC) may
+   be enabled in config
+ - The 3 different variants of SCZ180 are provided to match the
+   3 corresponding systems (SC126, SC130, and SC131) designed by
+   Stephen Cousins.
+
+EZZ80 (EZZ80_std.rom):
+ - Assumes CPU oscillator of 10.000 MHz
+ - Console on primary SIO serial port at 115200 baud
+ - Includes support for on-board SIO
+ - Includes support for RC2014 Compact Flash Module
+ - Includes support for RC2014 PPIDE Module
+
+DYNO (DYNO_std.rom):
+ - Assumes CPU oscillator of 18.432 MHz
+ - Console on Z180 onboard serial ports at 38400 baud
+ - Includes support for BQ4842 RTC
+ - Includes support for onboard PPIDE
+ - Support for Dyno floppy controllers may be enabled in config

Doc/ChangeLog.txt

@@ -1,3 +1,126 @@
+Version 3.0.0
+-------------
+- WBW: v2.9.2 -> 3.0 version upgrade due to scope of changes
+
+Version 2.9.2
+-------------
+- PMS: Fixed DS1210-related issue resulting in "Invalid BIOS" errors
+- SCC: Support for SC126 motherboard
+- WBW: Enable Auto-CTS/DCD in SIO driver for pacing output data
+- WBW: Support missing pull-up resistors on SPI SD adapter boards (common)
+- WBW: Support two SIO modules w/ auto-detection
+- PMS: Support ECB USB-FIFO board
+- WBW: Fixed ASSIGN issue with incorrect DPB selection
+- WBW: Add RC2014 Z180 AY sound support to TUNE app
+- WBW: Add RC2014 AY sound support to AY driver
+- WBW: Add SC126 platform
+- WBW: Config files cleanup
+- WBW: Add interrupt support to ASCI driver
+- WBW: Refactored XModem overlay, merged USB-FIFO support
+- PMS: Added DS1210 low battery detection/message
+- PMS: Added note playing ability to SPK driver
+- WBW: Support disk I/O to any memory bank
+- WBW: Fix floppy I/O error on slow CPUs w/ ints active (credit Jorge Rodrigues)
+- WBW: Support for KIO chip (based on board by Tom Szolyga)
+- N?B: Made ZCAL Y2K compliant
+- WBW: Show disk activity on diagnostic LEDs
+- WBW: DSRTC now detects DS-1302 presence dynamically
+- WBW: SC126 platform renamed to SCZ180 w/ configs for SC126, SC130
+- WBW: Add status LED support
+- WBW: Add support for secondry SPI (SD Card) on SC126
+- PMS: Add sound support to NASCOM BASIC
+- WBW: Updated FAT to add MD and FORMAT commands
+- WBW: Add CP/M 3 (experimental)
+- M?T: Support Shift register SPI WIZNET for RC2014
+- PLS: Added seconds register in HBIOS
+- WBW: More flexible table-driven config in TUNE.COM
+- PMS: Added timer support for Zilog Peripherals ECB Board
+- PLS: Enhanced Intel Hex Load in dbgmon
+- WBW: Overhaul disk image creation
+- WBW: Added support for Dyno platform (based on work by Steve Garcia)
+- SLG: Added support for BQ4845 RTC (bqrtc.asm)
+- PMS: Added 80x30 video mode to VGA3 driver
+- PMS: Added 80x43 video mode
+- PMS: Added font compression option
+- PMS: Added a "safe mode" startup w/ minimal device support
+- WBW: Switch RC/SC Z180 platforms to 115,200 default baud rate
+- PMS: Enhanced PPIDE driver to handle multiple PPI interfaces
+- PMS: Added a ROM based game
+- WBW: Only assign drive letters to hard disk devices with media
+- WBW: Enhanced IDE driver to handle multiple IDE interfaces
+- D?R: Contributed SC126 How-To: Preparing a MicroSD Card to Transfer Files to/from a Linux System
+- PMS: Updated romldr to handle more than 9 drives
+- PMS: Added "user" rom module template
+- PMS: Added CP/M 3 manuals
+- WBW: Boot from any slice
+- C?M: Added Unix build process
+- PLS: FreeRTOS compatibility
+- WWB: Removed OSLDR application (can't handle new OSes)
+
+Version 2.9.1
+-------------
+- E?B: Added support for RC2014 RTC
+- WBW: Converted PTXPLAY to TUNE (now plays PT2/PT3/MYM sounds files)
+- WBW: Updated Win32DiskImager to v1.0
+- WBW: Implemented character attributes on Propeller based consoles
+- MS:  Added support for BEL function in Propeller based consoles
+- WBW: Support additional escape sequences in Propeller console ANSI emulation
+- WBW: Map LPT: to second serial port, UL1: to third serial port
+- WBW: Update default IOBYTE so that LST:=LPT: by default
+- WBW: Fixed missing drive/head setup for writes in PPIDE
+- WBW: Fixed XModem HBIOS console driver for file send operations
+- WBW: Preliminary support for RC180 platform (Z180 module in RC2014)
+- WBW: Added NZCOM distribution files to third slice of hard disk image
+- WBW: Fixed getnum32 bug in MODE command (found by Phil Summers)
+- PMS: Added serial support for Zilog Peripherals Baord
+- WBW: Added preliminary support for interrupt management API
+- PMS: Improved boot messages in RAM-Floppy driver
+- PMS: Added charge setting display to RTC boot messages
+- WBW: Add SmallZ80 support to FDU
+- WBW: Refactored Debug Monitor w/ improved syntax parsing and help
+- PMS: Added Forth, Nascom BASIC, and Tasty BASIC to ROM
+- PMS: Refactored ROM Loader to support more ROM images, now table driven
+- WBW: Refactored DSKY code
+- SK:  Initial support for Easy Z80
+- PMS: Enhance VDU driver to support alternative screen dimensions
+- WBW: DDT and DDTZ modified to use RST 30 instead of RST 38 to avoid conflicts with IM 1 interrupts
+- WBW: Added timer interrupt support for CTC under Zeta 2 and Easy Z80
+- WBW: Support LBA style access in floppy driver
+- WBW: Added beta version of FAT filesystem utility (copy, dir, del, ren)
+- SCC: Added support for native memory addressing on Z180-based RC2014
+- PMS: Dynamically discover and display processor type at boot
+- J?L: Added German keyboard support to PPK and KBD drivers
+
+Version 2.9.0
+-------------
+- WBW: Implemented multi-sector I/O in all disk drivers
+- WBW: Added support for RC2014 SMB Floppy controller modules (SMC and WDC)
+- WBW: New function dispatching for character/disk/video drivers
+- WBW: Updated FDU app to support RC2014 floppy controllers
+- WBW: Added TIMER app to display system timer value
+- WBW: Refactored interrupt management code
+- WBW: Added PTXPLAY application and sample tunes
+
+Version 2.8.6
+-------------
+- WBW: Added support for RC2014 (SIO and ACIA drivers primarily)
+- WBW: Automatically detect and run PROFILE.SUB on boot drive if it exists
+- WBW: Fixed Dual SD Board detection
+- WBW: Added console support to XModem (for RC2014 primarily)
+- E?B: Fixed IDE/PPIDE when used with non-CF drives
+- WBW: Patched SUBMIT.COM so that it always puts temp file on A: for immediate execution
+- WBW: Accommodate spin up time for true IDE hard disks (IDE or PPIDE)
+
+Version 2.8.5
+-------------
+- WBW: Cleaned up support in TMS driver for SCG board
+
+Version 2.8.4
+-------------
+- WBW: FD.COM renamed to FDU.COM and integrated with build
+- WBW: FDU.COM enhanced to select FDC hardare at startup to
+       eliminate multiple versions.
+
 Version 2.8.3
 -------------
 - WBW: Added MODE command

Doc/Contrib/FdTst.txt

@@ -1,429 +0,0 @@
-================================================================
-FDTST v3.1 for N8VEM DISKIO / DISKIO V3  / ZETA / DIDE / N8
-================================================================
-
-Updated JuLY 1, 2012
-by Wayne Warthen (wwarthen@gmail.com)
-
-Application to test the hardware functionality of the Floppy Disk
-Controller (FDC) on the ECB DISK I/O, DISK I/O V3, ZETA SBC, 
-Dual IDE w/ Floppy, or N8 board.
-
-The intent is to provide a testbed that allows direct testing
-of all possible media types and modes of access.  The application
-supports read, write, and format by sector, track, and disk as
-well as a random read/write test.
-
-The application supports access modes of polling, interrupt, 
-INT/WAIT, and DRQ/WAIT.  At present, it supports 3.5" media at DD (720KB) and
-HD (1.44MB) capacities.  It also now supports 5.25" media (720KB and 1.2MB)
-and 8" media (1.11MB) as well.   Additonal media will be added when I have
-time and access to required hardware.  Not all modes are supported
-on all platforms and some modes are experimental in all cases.
-
-In many ways this application is merely reinventing the wheel and
-performs functionality similer to existing applications, but I have
-not seen any other applications for DISK I/O that provide this range
-of functionality.
-
-While the application is now almost entirely new code, I would like to
-acknowledge that much was derived from the previous work of Andrew Lynch
-and Dan Werner.  I also want to credit Sergio Gimenez with testing the 5.25"
-drive support and Jim Harre with testing the 8" drive support.  Thanks!
-
-General Usage
--------------
-
-In general, usage is self explanatory.  The main menu allows you to set
-the unit, media, and mode to test.  These settings MUST match your
-situation.  Read, write, format, and verify functions are provided.  A sub-menu
-will allow you to choose sector, track, disk, or random tests.
-
-The verify function requires a little explanation.  It will take the contents
-of the buffer, save it, and compare it to the selected sectors.  So, you
-must ensure that the sectors to be verified already have been written
-with the same pattern as the buffer contains.  I typically init the buffer
-to a pattern, write the pattern to the entire disk, then verify the entire
-disk.
-
-Another submenu is provided for FDC commands.  This sub-menu allows you to
-send low-level commands directly to FDC.  You MUST know what you are doing
-to use this sub-menu.  For example, in order to read a sector using this
-sub-menu, you will need to perform specify, seek, sense int, and read 
-commands specifying correct values (nothing is value checked in this menu).
-
-Required Hardware/BIOS
-----------------------
-
-Of course, the starting point is one of the support hardware platforms.
-You need to start with either an N8VEM SBC, backplane, and ECB DISK I/O
-card or a Zeta SBC.  Additionally, a floppy drive connected via an
-appropriate cable:
-
-DISKIO - no twist in cable, drive unit 0/1 must be selected by jumper on drive
-ZETA - cable with twist, unit 0 after twist, unit 1 before twist
-DIDE/N8 - cable with twist, unit 0 before twist, unit 1 after twist
-
-
-It is preferable that the BIOS you use does not have DISK I/O support
-enabled since the application assumes it has complete control of the
-DISK I/O hardware.
-
-The DISK I/O should be jumpered as follows:
-
-J1: depends on use of interrupt modes (see interrupt modes below)
-J2: pins 1-2, & 3-4 jumpered
-J3: hardware dependent timing for DMA mode (see DMA modes below)
-J4: pins 2-3 jumpered
-J5: off
-J6: pins 2-3 jumpered
-J7: pins 2-3 jumpered
-J8: off
-J9: off
-J10: off
-J11: off
-J12: off
-
-Note that J1 can be left on even when not using interrupt modes.  As
-long as the BIOS is OK with it, that is fine.  Note also that J3 is
-only relevant for DMA modes, but also can be left in place when
-using other modes.
-
-The DISK I/O V3 should be jumpered at the default settings:
-
-JP2: 3-4
-JP3: 1-2 for int mode support, otherwise no jumper
-JP4: 1-2, 3-4
-JP5: 1-2
-JP6: 1-2
-JP7: 1-2, 3-4
-
-Zeta does not have any relevant jumper settings.
-
-DIDE should be jumpered as follows:
-
-K3 (DT/R or /RD): /RD
-P5 (bd ID): 1-2, 3-4 (for $20-$3F port range)
-
-There are no specific N8 jumper settings, but the default
-I/O range starting at $80 is assumed in the published code.
-
-
-Modes of Operation
-------------------
-
-You can select the following test modes.  Please refer to the chart
-that follows to determine which modes should work with combinations
-of Z80 CPU speed and media format.
-
-Polling: Traditional polled input/output.  Works well and very reliable
-including timeouts and good error recovery.  Also, the slowest performance
-which precludes it from being used with 1.44MB floppy on a 4MHz Z80.
-This is definitely the mode you want to get working before any others.
-It does not require J1 (interrupt enable) on DISK I/O and does not care about
-the setting of J3.
-
-Interrupt: Input/output is interrupt driven.  Works pretty well, but
-is not able to recover from some errors.  For example, if there is
-no disk in the drive, this mode will just hang until a disk is inserted.
-This mode REQUIRES that interrupts be enabled on the DISK I/O via
-jumper at J1.  On Zeta it requires the INT/NMI jumper be set for
-INT.  Mode not supported on DIDE or N8.  Some BIOS variants will not 
-handle interrupts during boot.
-
-Fast Interrupt: As above, but sacrifices additional reliability for
-faster operation.  This mode will allow a 1.44MB floppy to work
-with a 4MHz Z80 CPU.  However, if any errors occur (even a transient
-read error which is not unusual), this mode will hang.  As above
-you MUST have the appropriate jumpers for DISKIO and Zeta.  DIDE
-does not support this mode.
-
-INT/WAIT: Same as Fast Interrupt, but uses CPU wait instead of
-actual interrupt.  Subject to all the same issues as Fast
-Interrupt, but does not need J1 shorted.  J3 is irrelevant.
-This mode is available on only on DISKIO (and not DISKIO V3).
-
-DRQ/WAIT: Uses pseudo DMA to handle input/output.  Does not require that
-interrupts (J1) be enabled on the DISK I/O.  However, it is subject to
-all of the same reliability issues as "Fast Interrupt".  This
-mode is known to not work on N8VEM DISKIO!!!  It is included
-for testing only.  It is dependent on setting of J3.  This
-mode is NOT available on Zeta, DIDE, N8, or DISKIO V3.
-
-The chart below attempts to describe the combinations that
-work for me.  By far, the most reliable mode is Polling,
-but it requires 8MHz CPU for HD disks.
-
-DRQ/WAIT --------------------------------+
-INT/WAIT -----------------------------+  |
-Fast Interrupt --------------------+  |  |
-Interrupt ----------------------+  |  |  |
-Polling ---------------------+  |  |  |  |
-                             |  |  |  |  |
-CPU Speed --------------+    |  |  |  |  |
-                        |    |  |  |  |  |
-                        |    |  |  |  |  |
-
-3.5" DD (720K) ------  4MHz  Y  Y  Y  Y  X
-                       8MHz+ Y  Y  Y  Y  X
-
-3.5" HD (1.44M) -----  4MHz  N  N  Y  Y  X
-                       8MHz+ Y  Y  Y  Y  X
-					   
-5.25" DD (360K) -----  4MHz  Y  Y  Y  Y  X
-                       8MHz+ Y  Y  Y  Y  X
-
-5.25" HD (1.2M) -----  4MHz  N  N  Y  Y  X
-                       8MHz+ Y  Y  Y  Y  X
-					   
-8" DD (1.11M) -------  4MHz  N  N  Y  Y  X
-                       8MHz+ Y  Y  Y  Y  X
-					   
-Y = Yes, works
-N = No, does not work
-X = Experimental, probably won't work
-
-Tracing
--------
-
-Command/result activity to/from the FDC will be written out
-if the trace setting is changed from '00' to '01' in setup.
-Additionally, if a command failure is detected on any
-command, that specific comand and results are written
-regardless of the trace setting.
-
-The format of the line written is:
-<OPERATION>: <COMMAND BYTES> --> <RESULT BYTES> [<RESULT>]
-
-For example, this is the output of a normal read operation:
-READ: 46 01 00 00 01 02 09 1B FF --> 01 00 00 00 00 02 02 [OK]
-
-Please refer to the i8272 data sheet for information on the
-command and result bytes.
-
-Note that the sense interrupt command can return a non-OK
-result.  This is completely normal in some cases.  It is
-necessary to "poll" the drive for seek status using
-sense interrupt.  If there is nothing to report, then
-the result will be INVALID COMMAND.  Additionally,
-during a recalibrate operation, it may be necessary to
-issue the command twice because the command will only step
-the drive 77 times looking for track 0, but the head may be
-up to 80 tracks away.  In this case, the first recalibrate
-fails, but the second should succeed.  Here is what this
-would look like if trace is turned on:
-
-RECALIBRATE: 07 01 --> <EMPTY> [OK]
-SENSE INTERRUPT: 08 --> 80 [INVALID COMMAND]
-	...
-	...
-	...
-SENSE INTERRUPT: 08 --> 80 [INVALID COMMAND]
-SENSE INTERRUPT: 08 --> 71 00 [ABNORMAL TERMINATION]
-RECALIBRATE: 07 01 --> <EMPTY> [OK]
-SENSE INTERRUPT: 08 --> 21 00 [OK]
-
-Another example is when the FDC has just been reset.  In
-this case, you will see up to 4 disk change errors.  Again
-these are not a real problem and to be expected.
-
-When tracing is turned off, the application tries to be
-intelligent about error reporting.  The specific errors
-from sense interrupt documented above will be suppressed
-because they are not a real problem.  All other
-errors will be displayed.
-
-Error Handling
---------------
-
-There is no automated error retry logic.  This is very
-intentional since the point is to expose the controller
-and drive activity.  Any error detected will result in 
-a prompt to abort, retry, or continue.  Note that some
-number of errors is considered normal for this
-technology.  An occasional error would not necessarily
-be considered a problem.
-
-CPU Speed
----------
-
-I distribute the binary version of the application optimized for
-20MHz CPUs.  There is a configuration variable called CPUFREQ
-at the top of the source file.  Ideally, you should build
-with that set appropriately.  However, I have found that the
-default build setting of 20MHz seems to work for 4-20MHz CPUs.
-
-Interleave
-----------
-
-The format command now allows the specification of a sector
-interleave.  It is almost always the case that the optimal
-interleave will be 2 (meaning 2:1).
-
-360K Media
-----------
-
-The 360K media definition should work well for true 360K
-drives.  However, it will generally not work
-with 1.2M drives.  This is because these drives spin at 360RPM
-instead of the 300RPM speed of true 360K drives.  Additionally,
-1.2M drives are 80 tracks and 360K drives are 40 tracks and, so
-far, there is no mechanism in FDTST to "double step" as a way
-to use 40 track media in 80 track drives.
-
-With this said, it is possible to configure some 1.2M 5.25" drives
-to automatically spin down to 300RPM based on a density select
-signal (DENSEL).  This signal is asserted by FDTST for 360K
-media, so IF you have configured your drive to react to this
-signal correctly, you will be able to use the 360K media defintion.
-Most 1.2M 5.25" drives are NOT configured this way by default.
-TEAC drives are generally easy to modify and have been tested by
-the author and do work in this manner.  Note that this does not 
-address the issue of double stepping above; you will just be 
-using the first 40 of 80 tracks.
-
-Support
--------
-
-I am happy to answer questions as fast and well as I am able.
-Best contact is wwarthen@gmail.com or post something on the
-N8VEM Google Group https://groups.google.com/forum/#!forum/n8vem.
-
-Changes
--------
-
-WW 8/12/2011
-
-Removed call to pulse TC in the FDC initialization
-after determining that it periodically caused the FDC to write
-bad sectors.  I am mystified by this, but definitely found it
-to be true.  Will revisit at some point -- probably a timing
-issue between puslsing TC and whatever happens next.
-
-Non-DMA mode was being set incorrectly for FAST-DMA mode.
-It was set for non-DMA even though we were doing DMA.  It is
-interesting that it worked fine anyway.  Fixed it anyway.
-
-DIO_SETMEDIA was not clearing DCD_DSKRDY as it should.  Fixed.
-
-WW 8/26/2011: v1.1
-
-Added support for Zeta.  Note that INT/WAIT and DRQ/WAIT are
-not available on Zeta.  Note that Zeta provides the ability
-to perform a reset of the FDC independent of a full CPU
-reset.  This is VERY useful and the FDC is reset anytime
-a drive reset is required.
-
-Added INT/WAIT support.
-
-WW 8/28/2011: V1.2
-
-All changes in this version are Zeta specific.  Fixed FDC reset
-logic and motor status display for Zeta (code from Sergey).
-
-Modified Zeta disk change display to include it in the
-command output line.  This makes more sense because a command
-must be issued to select the desired drive first.  You can
-use the SENSE INT command id you want to check the disk
-change value at any time.  It will also be displayed with
-any other command output display.
-
-WW 9/1/2011: V1.3
-
-Added CPUFREQ configuration setting to tune
-delays based on cpu speed.  The build app
-is set for 8MHz which also seems to work well
-for 4MHz CPU's.  Faster CPU speeds will
-probably require tuning this setting.
-
-WW 9/5/2011: V1.4
-
-Changed the polling execution routines to utilize CPUFREQ
-variable to optimize timeout counter.  Most importantly,
-this should allow the use of faster CPUs (like 20MHz).
-
-WW 9/19/2011: V1.5
-
-Zeta changes only.  Added a call to FDC RESET after any
-command failure.  This solves an issue where the drive
-remains selected if a command error occurs.  Also
-added FDC RESET to FDC CONTROL menu.
-
-WW 10/7/2011: V2.0
-
-Added support for DIDE.  Only supports polling IO and it
-does not appear any other modes are possible given the
-hardware constraints.
-
-WW 10/13/2011: V2.1
-
-Modified to support N8.  N8 is essentially identical to
-Dual IDE. The only real change is the IO addresses.  In
-theory, I should be able to support true DMA on N8 and
-will work on that.
-
-WW 10/20/2011: v2.2
-
-I had some problems with the results being read were
-sometimes missing a byte.  Fixed this by taking a more
-strict approach to watching the MSR for the exact
-bits that are expected.
-
-WW 10/22/2011: V2.3
-
-After spending a few days trying to track down an
-intermittent data corruption issue with my Dual IDE
-board, I added a verify function.  This helped
-me isolate the problem very nicely (turned out to
-be interference from the bus monitor).
-
-WW 11/25/2011: V2.4
-
-Preliminary support for DISKIO V3.  Basically just
-assumed that it operates just like the Zeta.  Needs
-to be verified with real hardware as soon as I can.
-
-WW 1/9/2012: V2.5
-
-Modified program termination to use CP/M reset
-call so that a warm start is done and all
-drives are logged out.  This is important
-because media may have been formatted during
-the program execution.
-
-WW 2/6/2012: v2.6
-
-Added support for 5.25" drives as tested by
-Sergio.
-
-WW 4/5/2012: v2.7
-
-Added support for 8" drives as tested by
-Jim Harre.
-
-WW 4/6/2012: v2.7a
-
-Fixed issue with media selection menu to remove
-duplicate entries.
-
-WW 4/8/2012: v2.7b
-
-Corrected the handling of the density select
-signal.
-
-WW 5/22/2012: v2.8
-
-Added new media definitions (5.25", 320K)
-
-WW 6/1/2012: v2.9
-
-Added interleave capability on format
-
-WW 6/5/2012: v3.0
-
-Documentation cleanup
-
-WW 7/1/2012: v3.1
-
-Modified head load time (HLT) for 8" media based on
-YD-180 spec.  Now set to 50ms.

Doc/Contrib/LinuxBuild.txt

@@ -1,45 +0,0 @@
-Assembling the RomWBW firmware under Linux.
-
-Note: Updated on 6/25/2013 to eliminate the need for the separate Linux
-makefile.  The standard makefile now has conditionals to allow it to be
-used under Windows or Linux (I hope) --WW
-
-This method has been used under Ubuntu Linux and may have to be adapted for
-other distributions.  It is a bit more involved than the Windows procedure.
-
-What you need
-You will need the TASM assembler, make, dos2unix and cpmtools.
-
-The TASM assembler is shareware and the Linux version is only available as
-source code from the Author.  I found one bug during compiling version 3.2 for
-Ubuntu.  In /src/tasm.c change the reference CLK_TIC to CLOCKS_PER_SEC.
-After compiling install the tasm executable to /usr/local/bin and the table
-files to /usr/local/lib.  If you choose to place them somewhere else you will
-have to edit the "makefile.linux" file to suit.
-
-The make, dos2unix and cpmtools packages are found in the Linux repository and
-installed as for any other package.
-
-Before assembly
-Some changes need to be made to cater for the differences between Linux and the
-DOS/Windows environments.  The examples below refer to the /RomWBW/current
-directory, you'll have to allow for the stable or branches directories if used.
-These are all done from a terminal.  (: is end of the command prompt)
-
-1. Go to the RomWBW Source directory.e.g.
-:cd /n8vem/RomWBW/current/Source
-
-2. The Linux version of TASM can't handle the CR-LF line endings.  So from the 
-command prompt use dos2unix to convert all the source files.
-:~/RomWBW/current/Source dos2unix -f *.asm *.inc *.z80 *.lib diskdefs
-
-3. You'll have to alter the disk definitions for the cpmtools package to cater
-for the new roms.  Easiest way is to copy the one given in the source over the 
-old.  This must be done as superuser.
-:~/RomWBW/current/Source sudo cp diskdefs /etc/cpmtools/diskdefs
-
-4. From now on it's the same as using the DOS/Windows instructions in Build.txt.
-Make any last changes, go to the Source directory and make
-:~/RomWBW/current/Source make clean ; make
-
-DGG

Doc/Contrib/Z180 Clocking.txt

@@ -1,19 +0,0 @@
-The table below can be used to determine the correct value for CLKDIV AND CNTLB
-in an Z180 (N8) configuration file.  OSC Freq refers to the hardware clock
-oscillator frequency you are using.  You can then choose a CLKDIV value which
-will result in the CPU speed (frequency) shown below the oscillator frequency.
-
-Using your oscillator frequency (OSC) and chosen value for CLKDIV, you can
-use the appropriate column to derive values to use for CNTLB for different
-baud rates.
-
-		----- CLKDIV = 0 -----	----- CLKDIV = 1 -----	
-OSC Freq (MHz)	 6.144	12.288	18.432	 6.144	12.288	18.432
-CPU Freq (MHz)	 3.072	 6.144	 9.216	 6.144	12.288	18.432
-
-1200 baud	   04H	   05H	   24H	   05H	   06H	   25H			
-2400 baud	   03H	   04H	   23H	   04H	   05H	   24H			
-4800 baud	   02H	   03H	   22H	   03H	   04H	   23H			
-9600 baud	   01H	   02H	   21H	   02H	   03H	   22H
-19200 baud	   00H	   01H	   20H	   01H	   02H	   21H
-38400 baud	   ---	   00H	   ---	   00H	   01H	   20H

Doc/Contrib/ZSystem.txt

@@ -1,3 +1,9 @@
+ZSDOS Adaptation Notes for RomWBW
+---------------------------------
+
+Wayne Warthen
+wwarthen@gmail.com
+
 This file is a log of the work done to adapt the ZSDOS distribution to the N8VEM platforms under RomWBW.  I strongly recommend reviewing the zsdos.pdf file in the Doc directory.
 
 The starting point was the general public release of ZSDOS that is generally available.  The first line of the README file is "ZSDOS-GP.  General Public Release of the ZSDOS 1.x Operating System."
@@ -26,6 +32,8 @@ The remainder of this document details the changes I made as I went along.  In a
 
 6. Updated FILEATTR to v1.6A.  Original FILEATTR.CFG was invalid.  FILEATTR.CFG replaced with FA16.CFG.  Added associated files FA16.DOC, FA16A.FOR, FA16CFG.TXT.
 
+7. ZCAL patched to be Y2K compliant.  Contributed by Nick Brok.
+
 
 Usage Notes
 -----------

Doc/DDTZ.doc

@@ -0,0 +1,564 @@
+
+                           DDTZ v2.7
+                       by C.B. Falconer
+                  edited by George A. Havach
+
+Introduction:
+============
+DDTZ v2.7 is a complete replacement for DDT,  Digital  Research's 
+famous Dynamic Debugging Tool,  with improved functionality,  bug 
+extermination,  and full Z80 support.  In general,  DDTZ is fully 
+compatible  with  the  original utility,  but it  has  extra  and 
+extended  commands  and  many  fewer  quirks.   All  Z80-specific 
+instructions can be (dis)assembled,  though in Intel rather  then 
+Zilog format. Furthermore, DDTZ will correctly trace ('T' and 'U' 
+commands) both 8080 and Z80 instructions,  depending on which CPU 
+is operating.  On startup,  the program announces which CPU it is 
+running on.
+
+DDTZ v2.7 now handles the 64180 added opcodes.  It does NOT  test 
+for  a  64180 CPU,  since this cannot be done  without  executing 
+illegal   Z80  instructions,   which  in  turn  will  crash  some 
+simulators.  However v2.7 does not execute any 64180 instructions 
+internally, only in the subject program.
+
+This  issue supplies the "M" version assembled,  to avoid  errors 
+when switching between MSDOS and CPM systems.   The command table 
+is updated accordingly.  Most CPM users are also MSDOS users, but 
+not vice-versa.
+
+The program is invoked by typing
+
+      ddtz<ret>
+or
+      ddtz [d:]filespec<ret>
+
+In  the  second  form,  DDTZ will load the  specified  file  into  
+memory starting at 0100H,  unless it's a .HEX file that sets  its 
+own  load  address.  Besides reporting the NEXT free address  and  
+the PC (program counter) after a successful load, DDTZ also shows 
+the number of memory pages needed for a SAVE.  Instead of  having 
+to write all this down,  just use the 'X' command at any time  to 
+redisplay these three values for the current application.
+
+NOTE:  loading  more  code above the NEXT pointer  revises  these 
+       values.
+
+As  in DDT,  when a program is loaded above the area holding  the 
+'A'  and  'U'  (and now 'W') command  code,  these  commands  are 
+disabled,  and the extra memory  is released to the user.   Thus,  
+DDTZ can occupy  as little as 3K total memory space.  Unlike DDT,  
+however,  DDTZ will not overwrite itself or the system on program 
+loads (except .HEX files).
+
+At initialization,  the stack pointer (SP) points to a return  to 
+DDTZ,  just like for the CCP. Thus, programs that normally return 
+to   the  CCP  will  be  returned  to  DDTZ.    The  'B'  command  
+reinitializes this condition.
+
+
+The intercept vector copies  the BDOS version number,   etc.,  so 
+an  object program  does not know that  DDTZ is running   (except 
+for BIOS-BDOS vector size). Thus, programs that check the version 
+number should execute correctly under DDTZ.
+
+All input parameters can now be entered in any of three formats:
+
+       (1) hexadecimal (as in DDT),
+       (2) decimal, by adding a leading '#' character,
+       (3) ASCII, by enclosing between either single or double
+           quotes; either one or two characters are allowed.
+
+Leading  blanks  in  command lines and parameters  are  absorbed. 
+Either  a  comma  or a (single) space   is   a  valid  delimiter.   
+Either uppercase or lowercase input is accepted.
+
+The  default command  (for anything  not otherwise  recognizable)  
+is 'H'.  This allows convenient calculation, along with the other 
+features described below.   So,  to convert a number,  just enter 
+it!
+
+As  in  DDT,   the prompt character is '-',  and the  only  error 
+message  is  the query ('?'),  which generally kicks you back  to 
+command mode. 
+
+New Commands (Over DDT):
+=======================
+
+NOTE: letters in parenthesis,  e.g.  "(U)",  show the  equivalent 
+      command for DDTZM version (compatible with MSDOS debug).
+
+   @  Sets  or  shows (with no parameter)  the internally  stored 
+      "base" value.   Also used with the 'S' and 'D' commands  as 
+      an optional parameter  (though without the '@')  to display 
+      memory  from an arbitrary base marker (offset). When set to 
+      zero (the default), it does not affect any screen displays.
+
+   B  B)egin: resets the USER stack pointer to its initial value, 
+      such  that any program that exits by an RET will return  to 
+      DDTZ.   DDTZ   provides    a  default   stack   space    of 
+      approximately 24 bytes for user programs.
+
+   C  C)ompare first_address,last_address,against_address:  shows 
+      all  the byte differences between two memory areas,  in the 
+      format
+
+       XXXX aa YYYY bb
+
+      where  XXXX and YYYY  are the comparative memory addresses, 
+      and aa  and  bb  are the corresponding byte values.  Can be 
+      used  to  verify   the identity  of  two  files   by  first 
+      loading  them   into  different memory areas with  the  'R' 
+      command (see below).
+
+
+   W  Write:   stores the modified memory area to disk under  the 
+  (K) filename  specified  by the 'I'  command,  overwriting  the 
+      original file from which it was loaded (the user is queried 
+      before  doing  so).  By default,  the image of memory  from 
+      0100H through the "NEXT" value -1 is saved.  "K first_addr, 
+      last_address"  overrides this and allows writing ANY memory 
+      area to a file. Almost a necessity for CPM 3.0 (no SAVE!).
+      K)eep on DDTZ
+
+   X  eXamine:  redisplays the "NEXT PC SAVE" report at any time.
+  (Q) Q)uery size on DDTZ.
+
+   S  S)earch  first_address,   last_addr,  value:  searches  the 
+  (W) specified memory area for the value (a 16-bit word,  not  a 
+      byte) and shows the locations of all such.  Very useful for 
+      finding  CALL's  or JMP's to a particular address, etc.
+      W)here on DDTZ
+
+   Y  Y)our_option  parm1,parm2,address:  executes  an  arbitrary 
+      routine  at  the  specified address,   with the BC  and  DE 
+      registers  set to parm1 and parm2, respectively.
+
+   Z  Displays (but does not alter) the Z80's alternate  register 
+      set,  including the index registers (disabled if running on 
+      an  8080).  On Z80's,   automatically included  as the last 
+      part of the display by the 'X' command.
+
+
+Based (Offset) Displays:
+=======================
+ 
+The  'D' and 'E' commands  can use a stored base value  (offset),  
+as  set  by   the  '@' command.   The current  @  value   may  be 
+overridden for a single execution of these commands by adding the 
+base as an extra parameter  in the command line.   The effect  is  
+to  add  this  value   to  the  first/last  address  and  display 
+accordingly.  The address listing on the left becomes  XXXX:YYYY,  
+where  XXXX  is the offset address and YYYY is the actual  memory 
+address being displayed.   For example,  if you have a data  area  
+located at  42B7H  and wish to  preserve easy access,  just enter 
+"@42b7".  Now, "d0,3f" will dump memory starting at 4237H.
+
+
+Further Changes from DDT:
+========================
+
+   A  A)ssemble  now  accepts   the  full Z80  as  well  as  8080 
+      instruction  set,  although it expects them in Intel rather 
+      than  Zilog  format  (see  notes  below   under   the   'L' 
+      command).    When in doubt, see the mnemnonic list below.
+
+   D  D)isplay or D)ump  will accept  an optional third parameter  
+      to  set the base value for a single execution only.  Format 
+      has been cleaned up.
+
+   H  H)ex_arithmetic    on   two  values   also   shows    their 
+      difference  in decimal.  With only one value,  converts  to 
+      hexadecimal, decimal, and ASCII (low-order byte only).
+
+
+   N  N)ame  now allows drive specification  (d:...)  and sets up 
+  (I) the  complete  command  line,   including  both  FCB's  (at 
+      addresses 005CH and 006CH).   The tail (stored at 0081H up) 
+      is NOT upshifted.
+      I)nput on DDTZ
+
+   U  U)nassemble now displays the raw hexcode,  especially handy 
+  (L) when examining non-code areas. Intel (8080 style) mnemonics 
+      are  used,  so  some  disassembled  instructions  may  look 
+      strange.  E.g., the Z80's 'IN B,(C)' and 'OUT (C),B' become  
+      'INP B' and 'OUTP B', respectively;  'LD (nnnn),BC' becomes 
+      'SBCD nnnn',  'ADD IX,  BC' becomes 'DADX B', and 'JP (IX)' 
+      becomes 'PCIX'. 
+      L)ist on DDTZ
+
+   L  L)oad   now  permits  loading a file into memory   with  an 
+  (R) offset,  which  is  added to the default  load  address  of 
+      0100H.   When reading in  a .HEX file  with  a preset bias,  
+      the   'R'  command will not transfer control to an  invalid 
+      execution point.  Another execution of the 'R' command will 
+      reread the input file, e.g.:
+
+         n blah<ret>
+         l<ret>
+         ...modify the code and generally mess about...
+         l<ret>
+
+      The original file  is reloaded,  and the modifications  are 
+      removed.
+      R)ead on DDTZ
+
+   E  E)nter,  like  D)isplay,  now  accepts an  optional  second 
+  (S) parameter  to  set the base value for  a  single  execution 
+      only.
+      S)ubstitute or S)et on DDTZ
+
+   T  T)rap/trace   on  termination  now shows  the complete  CPU 
+      state. Traps and traces no longer lock up  when  a user RST 
+      7 instruction is executed.   Tracing of BDOS/BIOS calls  is 
+      heavily trun cated,  avoiding clutter and preventing system 
+      crashes.
+
+NOTE: Most of the UNDOCUMENTED Z80 op-codes are handled.  Others
+      can crash the system.
+
+   R  R)egisters  also shows what two-byte values the HL  and  SP 
+  (X) registers are actually pointing to.  On Z80's, displays the 
+      alternate register set.
+      eX)amine on DDTZ
+
+NOTE: Any  use  of the 'W' or 'L' command  resets the system  DMA 
+      transfer address to the standard default value of 0080H.
+
+
+; This is the output of DDTZ when disassembling OPTYPE.TRY
+NOP                     LDA     06A4            MOV     M,H
+LXI     B,06A4          DCX     SP              MOV     M,L
+STAX    B               INR     A               HLT        
+INX     B               DCR     A               MOV     M,A
+INR     B               MVI     A,20            MOV     A,B
+DCR     B               CMC                     MOV     A,C
+MVI     B,20            MOV     B,B             MOV     A,D
+RLC                     MOV     B,C             MOV     A,E
+EXAF                    MOV     B,D             MOV     A,H
+DAD     B               MOV     B,E             MOV     A,L
+LDAX    B               MOV     B,H             MOV     A,M
+DCX     B               MOV     B,L             MOV     A,A
+INR     C               MOV     B,M             ADD     B  
+DCR     C               MOV     B,A             ADD     C  
+MVI     C,20            MOV     C,B             ADD     D  
+RRC                     MOV     C,C             ADD     E  
+DJNZ    0134            MOV     C,D             ADD     H  
+LXI     D,06A4          MOV     C,E             ADD     L  
+STAX    D               MOV     C,H             ADD     M  
+INX     D               MOV     C,L             ADD     A  
+INR     D               MOV     C,M             ADC     B  
+DCR     D               MOV     C,A             ADC     C  
+MVI     D,20            MOV     D,B             ADC     D  
+RAL                     MOV     D,C             ADC     E  
+JR      0134            MOV     D,D             ADC     H  
+DAD     D               MOV     D,E             ADC     L  
+LDAX    D               MOV     D,H             ADC     M  
+DCX     D               MOV     D,L             ADC     A  
+INR     E               MOV     D,M             SUB     B  
+DCR     E               MOV     D,A             SUB     C  
+MVI     E,20            MOV     E,B             SUB     D  
+RAR                     MOV     E,C             SUB     E  
+JRNZ    0134            MOV     E,D             SUB     H  
+LXI     H,06A4          MOV     E,E             SUB     L  
+SHLD    06A4            MOV     E,H             SUB     M  
+INX     H               MOV     E,L             SUB     A  
+INR     H               MOV     E,M             SBB     B  
+DCR     H               MOV     E,A             SBB     C  
+MVI     H,20            MOV     H,B             SBB     D  
+DAA                     MOV     H,C             SBB     E  
+JRZ     0134            MOV     H,D             SBB     H  
+DAD     H               MOV     H,E             SBB     L  
+LHLD    06A4            MOV     H,H             SBB     M  
+DCX     H               MOV     H,L             SBB     A  
+INR     L               MOV     H,M             ANA     B  
+DCR     L               MOV     H,A             ANA     C  
+MVI     L,20            MOV     L,B             ANA     D  
+CMA                     MOV     L,C             ANA     E  
+JRNC    0134            MOV     L,D             ANA     H  
+LXI     SP,06A4         MOV     L,E             ANA     L  
+STA     06A4            MOV     L,H             ANA     M  
+INX     SP              MOV     L,L             ANA     A  
+INR     M               MOV     L,M             XRA     B  
+DCR     M               MOV     L,A             XRA     C  
+MVI     M,20            MOV     M,B             XRA     D  
+STC                     MOV     M,C             XRA     E  
+JRC     0134            MOV     M,D             XRA     H  
+DAD     SP              MOV     M,E             XRA     L  
+
+
+XRA     M               JPE     06A4            SLAR     M  
+XRA     A               XCHG                    SLAR     A  
+ORA     B               CPE     06A4            SRAR     B  
+ORA     C               XRI     20              SRAR     C  
+ORA     D               RST     5               SRAR     D  
+ORA     E               RP                      SRAR     E  
+ORA     H               POP     PSW             SRAR     H  
+ORA     L               JP      06A4            SRAR     L  
+ORA     M               DI                      SRAR     M  
+ORA     A               CP      06A4            SRAR     A  
+CMP     B               PUSH    PSW             SLLR     B  
+CMP     C               ORI     20              SLLR     C  
+CMP     D               RST     6               SLLR     D  
+CMP     E               RM                      SLLR     E  
+CMP     H               SPHL                    SLLR     H  
+CMP     L               JM      06A4            SLLR     L  
+CMP     M               EI                      SLLR     M  
+CMP     A               CM      06A4            SLLR     A  
+RNZ                     CPI     20              SRLR     B  
+POP     B               RST     7               SRLR     C  
+JNZ     06A4            RLCR    B               SRLR     D  
+JMP     06A4            RLCR    C               SRLR     E  
+CNZ     06A4            RLCR    D               SRLR     H  
+PUSH    B               RLCR    E               SRLR     L  
+ADI     20              RLCR    H               SRLR     M  
+RST     0               RLCR    L               SRLR     A  
+RZ                      RLCR    M               BIT     0,B
+RET                     RLCR    A               BIT     0,C
+JZ      06A4            RRCR    B               BIT     0,D
+CZ      06A4            RRCR    C               BIT     0,E
+CALL    06A4            RRCR    D               BIT     0,H
+ACI     20              RRCR    E               BIT     0,L
+RST     1               RRCR    H               BIT     0,M
+RNC                     RRCR    L               BIT     0,A
+POP     D               RRCR    M               BIT     1,B
+JNC     06A4            RRCR    A               BIT     1,C
+OUT     20              RALR    B               BIT     1,D
+CNC     06A4            RALR    C               BIT     1,E
+PUSH    D               RALR    D               BIT     1,H
+SUI     20              RALR    E               BIT     1,L
+RST     2               RALR    H               BIT     1,M
+RC                      RALR    L               BIT     1,A
+EXX                     RALR    M               BIT     2,B
+JC      06A4            RALR    A               BIT     2,C
+IN      20              RARR    B               BIT     2,D
+CC      06A4            RARR    C               BIT     2,E
+SBI     20              RARR    D               BIT     2,H
+RST     3               RARR    E               BIT     2,L
+RPO                     RARR    H               BIT     2,M
+POP     H               RARR    L               BIT     2,A
+JPO     06A4            RARR    M               BIT     3,B
+XTHL                    RARR    A               BIT     3,C
+CPO     06A4            SLAR    B               BIT     3,D
+PUSH    H               SLAR    C               BIT     3,E
+ANI     20              SLAR    D               BIT     3,H
+RST     4               SLAR    E               BIT     3,L
+RPE                     SLAR    H               BIT     3,M
+PCHL                    SLAR    L               BIT     3,A
+
+
+BIT     4,B             RES     3,D             SET     2,H      
+BIT     4,C             RES     3,E             SET     2,L      
+BIT     4,D             RES     3,H             SET     2,M      
+BIT     4,E             RES     3,L             SET     2,A      
+BIT     4,H             RES     3,M             SET     3,B      
+BIT     4,L             RES     3,A             SET     3,C      
+BIT     4,M             RES     4,B             SET     3,D      
+BIT     4,A             RES     4,C             SET     3,E      
+BIT     5,B             RES     4,D             SET     3,H      
+BIT     5,C             RES     4,E             SET     3,L      
+BIT     5,D             RES     4,H             SET     3,M      
+BIT     5,E             RES     4,L             SET     3,A      
+BIT     5,H             RES     4,M             SET     4,B      
+BIT     5,L             RES     4,A             SET     4,C      
+BIT     5,M             RES     5,B             SET     4,D      
+BIT     5,A             RES     5,C             SET     4,E      
+BIT     6,B             RES     5,D             SET     4,H      
+BIT     6,C             RES     5,E             SET     4,L      
+BIT     6,D             RES     5,H             SET     4,M      
+BIT     6,E             RES     5,L             SET     4,A      
+BIT     6,H             RES     5,M             SET     5,B      
+BIT     6,L             RES     5,A             SET     5,C      
+BIT     6,M             RES     6,B             SET     5,D      
+BIT     6,A             RES     6,C             SET     5,E      
+BIT     7,B             RES     6,D             SET     5,H      
+BIT     7,C             RES     6,E             SET     5,L      
+BIT     7,D             RES     6,H             SET     5,M      
+BIT     7,E             RES     6,L             SET     5,A      
+BIT     7,H             RES     6,M             SET     6,B      
+BIT     7,L             RES     6,A             SET     6,C      
+BIT     7,M             RES     7,B             SET     6,D      
+BIT     7,A             RES     7,C             SET     6,E      
+RES     0,B             RES     7,D             SET     6,H      
+RES     0,C             RES     7,E             SET     6,L      
+RES     0,D             RES     7,H             SET     6,M      
+RES     0,E             RES     7,L             SET     6,A      
+RES     0,H             RES     7,M             SET     7,B      
+RES     0,L             RES     7,A             SET     7,C      
+RES     0,M             SET     0,B             SET     7,D      
+RES     0,A             SET     0,C             SET     7,E      
+RES     1,B             SET     0,D             SET     7,H      
+RES     1,C             SET     0,E             SET     7,L      
+RES     1,D             SET     0,H             SET     7,M      
+RES     1,E             SET     0,L             SET     7,A      
+RES     1,H             SET     0,M             DADX    B        
+RES     1,L             SET     0,A             DADX    D        
+RES     1,M             SET     1,B             LXI     X,06A4   
+RES     1,A             SET     1,C             SIXD    06A4     
+RES     2,B             SET     1,D             INX     X        
+RES     2,C             SET     1,E             DADX    X        
+RES     2,D             SET     1,H             LIXD    06A4     
+RES     2,E             SET     1,L             DCX     X        
+RES     2,H             SET     1,M             INR     [X+05]   
+RES     2,L             SET     1,A             DCR     [X+05]   
+RES     2,M             SET     2,B             MVI     [X+05],20
+RES     2,A             SET     2,C             DADX    SP       
+RES     3,B             SET     2,D             MOV     B,[X+05] 
+RES     3,C             SET     2,E             MOV     C,[X+05] 
+
+
+MOV     D,[X+05]        DSBC    B               DADY    B       
+MOV     E,[X+05]        SBCD    06A4            DADY    D       
+MOV     H,[X+05]        NEG                     LXI     Y,06A4  
+MOV     L,[X+05]        RETN                    SIYD    06A4    
+MOV     [X+05],B        IM0                     INX     Y       
+MOV     [X+05],C        LDIA                    DADY    Y       
+MOV     [X+05],D        INP     C               LIYD    06A4    
+MOV     [X+05],E        OUTP    C               DCX     Y       
+MOV     [X+05],H        DADC    B               INR     [Y+05]  
+MOV     [X+05],L        LBCD    06A4            DCR     [Y+05]  
+MOV     [X+05],A        RETI                    MVI     [Y+05],2
+MOV     A,[X+05]        LDRA                    DADY    SP      
+ADD     [X+05]          INP     D               MOV     B,[Y+05]
+ADC     [X+05]          OUTP    D               MOV     C,[Y+05]
+SUB     [X+05]          DSBC    D               MOV     D,[Y+05]
+SBB     [X+05]          SDED    06A4            MOV     E,[Y+05]
+ANA     [X+05]          IM1                     MOV     H,[Y+05]
+XRA     [X+05]          LDAI                    MOV     L,[Y+05]
+ORA     [X+05]          INP     E               MOV     [Y+05],B
+CMP     [X+05]          OUTP    E               MOV     [Y+05],C
+POP     X               DADC    D               MOV     [Y+05],D
+XTIX                    LDED    06A4            MOV     [Y+05],E
+PUSH    X               IM2                     MOV     [Y+05],H
+PCIX                    LDAR                    MOV     [Y+05],L
+SPIX                    INP     H               MOV     [Y+05],A
+RLCR    [X+05]          OUTP    H               MOV     A,[Y+05]
+RRCR    [X+05]          DSBC    H               ADD     [Y+05]  
+RALR    [X+05]          shld    06A4            ADC     [Y+05]  
+RARR    [X+05]          RRD                     SUB     [Y+05]  
+SLAR    [X+05]          INP     L               SBB     [Y+05]  
+SRAR    [X+05]          OUTP    L               ANA     [Y+05]  
+SRLR    [X+05]          DADC    H               XRA     [Y+05]  
+BIT     0,[X+05]        lhld    06A4            ORA     [Y+05]  
+BIT     1,[X+05]        RLD                     CMP     [Y+05]  
+BIT     2,[X+05]        INP     M               POP     Y       
+BIT     3,[X+05]        OUTP    M               XTIY            
+BIT     4,[X+05]        DSBC    SP              PUSH    Y       
+BIT     5,[X+05]        SSPD    06A4            PCIY            
+BIT     6,[X+05]        INP     A               SPIY            
+BIT     7,[X+05]        OUTP    A               RLCR    [Y+05]  
+RES     0,[X+05]        DADC    SP              RRCR    [Y+05]  
+RES     1,[X+05]        LSPD    06A4            RALR    [Y+05]  
+RES     2,[X+05]        LDI                     RARR    [Y+05]  
+RES     3,[X+05]        CCI                     SLAR    [Y+05]  
+RES     4,[X+05]        INI                     SRAR    [Y+05]  
+RES     5,[X+05]        OTI                     SRLR    [Y+05]  
+RES     6,[X+05]        LDD                     BIT     0,[Y+05]
+RES     7,[X+05]        CCD                     BIT     1,[Y+05]
+SET     0,[X+05]        IND                     BIT     2,[Y+05]
+SET     1,[X+05]        OTD                     BIT     3,[Y+05]
+SET     2,[X+05]        LDIR                    BIT     4,[Y+05]
+SET     3,[X+05]        CCIR                    BIT     5,[Y+05]
+SET     4,[X+05]        INIR                    BIT     6,[Y+05]
+SET     5,[X+05]        OTIR                    BIT     7,[Y+05]
+SET     6,[X+05]        LDDR                    RES     0,[Y+05]
+SET     7,[X+05]        CCDR                    RES     1,[Y+05]
+INP     B               INDR                    RES     2,[Y+05]
+OUTP    B               OTDR                    RES     3,[Y+05]
+
+
+RES     4,[Y+05]        SET     0,[Y+05]        SET     4,[Y+05]
+RES     5,[Y+05]        SET     1,[Y+05]        SET     5,[Y+05]
+RES     6,[Y+05]        SET     2,[Y+05]        SET     6,[Y+05]
+RES     7,[Y+05]        SET     3,[Y+05]        SET     7,[Y+05]
+
+; These are the result of disassembling 64180OPS.TRY
+; These opcodes are available ONLY on the 64180 CPU
+; DDTZ will both assemble and disassemble these.
+IN0     B,20            TST     E               MLT     B 
+OUT0    20,B            IN0     H,20            MLT     D 
+TST     B               OUT0    20,H            TSTI    20
+IN0     C,20            TST     H               MLT     H 
+OUT0    20,C            IN0     L,20            TSIO    20
+TST     C               OUT0    20,L            SLP       
+IN0     D,20            TST     L               MLT     SP
+OUT0    20,D            TST     M               OTIM      
+TST     D               IN0     A,20            OTDM      
+IN0     E,20            OUT0    20,A            OIMR      
+OUT0    20,E            TST     A               ODMR      
+
+; The following are UNDOCUMENTED z80 opcodes from XTDOPS.TRY.
+; DDTZ will disassemble these, but will not assemble them.
+; They use xh/xl (or yh/yl) as separate byte registers.
+; Use these at your own risk.
+INRX    H               ACXR    H               MOVY    H,B  
+DCRX    H               ACXR    L               MOVY    H,C  
+MVIX    H,20            SUXR    H               MOVY    H,D  
+INRX    L               SUXR    L               MOVY    H,E  
+DCRX    L               SBXR    H               MOVY    H,A  
+MVIX    L,20            SBXR    L               MOVY    L,B  
+MOVX    B,H             NDXR    H               MOVY    L,C  
+MOVX    B,L             NDXR    L               MOVY    L,D  
+MOVX    C,H             XRXR    H               MOVY    L,E  
+MOVX    C,L             XRXR    L               MOVY    L,A  
+MOVX    D,H             ORXR    H               MOVY    A,H  
+MOVX    D,L             ORXR    L               MOVY    A,L  
+MOVX    E,H             CPXR    H               ADYR    H    
+MOVX    E,L             CPXR    L               ADYR    L    
+MOVX    H,B             INRY    H               ACYR    H    
+MOVX    H,C             DCRY    H               ACYR    L    
+MOVX    H,D             MVIY    H,20            SUYR    H    
+MOVX    H,E             INRY    L               SUYR    L    
+MOVX    H,A             DCRY    L               SBYR    H    
+MOVX    L,B             MVIY    L,20            SBYR    L    
+MOVX    L,C             MOVY    B,H             NDYR    H    
+MOVX    L,D             MOVY    B,L             NDYR    L    
+MOVX    L,E             MOVY    C,H             XRYR    H    
+MOVX    L,A             MOVY    C,L             XRYR    L    
+MOVX    A,H             MOVY    D,H             ORYR    H    
+MOVX    A,L             MOVY    D,L             ORYR    L    
+ADXR    H               MOVY    E,H             CPYR    H    
+ADXR    L               MOVY    E,L             CPYR    L    
+
+
+Command Summary:
+===============
+
+DDTZM command                                         DDTZ command
+=============                                         ============
+@ (base)
+A)ssemble first_address                                  A
+B)egin {i.e., initialize stack and return}               B
+C)ompare first_address,last_address,against_address      C
+D)ump first_address[,last_address[,base]]                D
+E)nter_in_memory first_address[,base]                    S)ubstitute
+F)ill first_address,last_address,value                   F
+G)o_to [address][,trap1[,trap2]]                         G
+H)ex_arithmetic value1(,value2)                          H
+L)oad_file (offset)                                      R)ead
+M)ove first_address,last_address,destination             M
+N)nput FCBs_command_line                                 I)nput
+Q)uit                                                    (not avail)
+R)egister examine/change [register|flag]                 X)amine
+S)earch first_address,last_address,word                  W)hereis
+T)race_execution [count]                                 T
+        Untrace_execution [count] (i.e. do count instr)  U)ntrace
+U)nassemble_code first_address[,last_address]            L)ist code
+W)rite [first_address,last_address]                      K)eep
+X)amine {i.e. display memory parameters for application} Q)uery
+Y)our_option BC:=parm1,DE:=parm2,call_address            Y
+Z)80_register_display                                    Z
+
+
+If you find this program useful, contributions will be gratefully
+accepted and will encourage further development and release of
+useful CPM programs.  My practice is to include source.
+
+C.B. Falconer
+680 Hartford Turnpike,
+Hamden, Conn. 06517           (203) 281-1438
+
+DDTZ and its associated documentation and other files are
+copyright (c) 1980-1988 by C.B. Falconer.  They may be freely
+copied and used for non-commercial purposes ONLY.
+ôÙ

Doc/FDU.txt

@@ -0,0 +1,514 @@
+================================================================
+Floppy Disk Utility (FDU) v5.3 for RetroBrew Computers 
+Disk IO / Zeta / Dual-IDE / N8 / RC2014 / SmallZ80 / Dyno
+================================================================
+
+Updated January 5, 2020
+by Wayne Warthen (wwarthen@gmail.com)
+
+Application to test the hardware functionality of the Floppy 
+Disk Controller (FDC) on the ECB DISK I/O, DISK I/O V3, ZETA 
+SBC, Dual IDE w/ Floppy, or N8 board.
+ 
+The intent is to provide a testbed that allows direct testing 
+of all possible media types and modes of access.  The 
+application supports read, write, and format by sector, track, 
+and disk as well as a random read/write test.
+
+The application supports access modes of polling, interrupt, 
+INT/WAIT, and DRQ/WAIT.  At present, it supports 3.5" media at 
+DD (720KB) and HD (1.44MB) capacities.  It also now supports 
+5.25" media (720KB and 1.2MB) and 8" media (1.11MB) as well.   
+Additional media will be added when I have time and access to 
+required hardware.  Not all modes are supported on all 
+platforms and some modes are experimental in all cases.
+
+In many ways this application is merely reinventing the wheel 
+and performs functionality similar to existing applications, 
+but I have not seen any other applications for RetroBrew 
+Computers hardware that provide this range of functionality.
+
+While the application is now almost entirely new code, I would 
+like to acknowledge that much was derived from the previous 
+work of Andrew Lynch and Dan Werner.  I also want to credit 
+Sergio Gimenez with testing the 5.25" drive support and Jim 
+Harre with testing the 8" drive support.  Support for Zeta 2 
+comes from Segey Kiselev.  Thanks!
+
+General Usage
+-------------
+
+In general, usage is self explanatory.  At invocation, you 
+must select the floppy disk controller (FDC) that you are 
+using.  Subsequently, the main menu allows you to set the 
+unit, media, and mode to test.  These settings MUST match your 
+situation.  Read, write, format, and verify functions are 
+provided.  A sub-menu will allow you to choose sector, track, 
+disk, or random tests.
+
+The verify function requires a little explanation.  It will 
+take the contents of the current in-memory disk buffer, save 
+it, and compare it to the selected sectors.  So, you must 
+ensure that the sectors to be verified already have been 
+written with the same pattern as the buffer contains.  I 
+typically init the buffer to a pattern, write the pattern to 
+the entire disk, then verify the entire disk.
+
+Another submenu is provided for FDC commands.  This sub-menu 
+allows you to send low-level commands directly to FDC.  You 
+*must* know what you are doing to use this sub-menu.  For 
+example, in order to read a sector using this sub-menu, you 
+will need to perform specify, seek, sense int, and read 
+commands specifying correct values (nothing is value checked 
+in this menu).
+
+Required Hardware/BIOS
+----------------------
+
+Of course, the starting point is to have a supported hardware 
+configuration. The following Z80 / Z180 based CPU boards are 
+supported:
+
+ - SBC V1/2
+ - Zeta
+ - Zeta 2
+ - N8
+ - Mark IV
+ - RC2014 w/ SMC
+ - RC2014 w/ WDC
+ - SmallZ80
+ - Dyno
+
+You must be using either a RomWBW or UBA based OS version.
+
+You must have one of the following floppy disk controllers:
+
+ - Disk IO ECB Board FDC
+ - Disk IO 3 ECB Board FDC
+ - Dual-IDE ECB Board FDC
+ - Zeta SBC onboard FDC
+ - Zeta 2 SBC onboard FDC
+ - N8 SBC onboard FDC
+ - RC2014 Scott Baker SMC-based Floppy Module
+ - RC2014 Scott Baker WDC-based Floppy Module
+ 
+Finally, you will need a floppy drive connected via an 
+appropriate cable:
+
+Disk IO - no twist in cable, drive unit 0/1 must be selected by jumper on drive
+DISK IO 3, Zeta, Zeta 2, RC2014, Dyno - cable with twist, unit 0 after twist, unit 1 before twist
+DIDE, N8, Mark IV, SmallZ80 - cable with twist, unit 0 before twist, unit 1 after twist
+
+Note that FDU does not utilize your systems ROM or OS to 
+access the floppy system.  FDU interacts directly with 
+hardware.  Upon exit, you may need to reset your OS to get the 
+floppy system back into a state that is expected.
+
+The Disk I/O should be jumpered as follows:
+
+J1: depends on use of interrupt modes (see interrupt modes below)
+J2: pins 1-2, & 3-4 jumpered
+J3: hardware dependent timing for DMA mode (see DMA modes below)
+J4: pins 2-3 jumpered
+J5: off
+J6: pins 2-3 jumpered
+J7: pins 2-3 jumpered
+J8: off
+J9: off
+J10: off
+J11: off
+J12: off
+
+Note that J1 can be left on even when not using interrupt 
+modes.  As long as the BIOS is OK with it, that is fine.  Note 
+also that J3 is only relevant for DMA modes, but also can be 
+left in place when using other modes.
+
+The Disk I/O 3 board should be jumpered at the default settings:
+
+JP2: 3-4
+JP3: 1-2 for int mode support, otherwise no jumper
+JP4: 1-2, 3-4
+JP5: 1-2
+JP6: 1-2
+JP7: 1-2, 3-4
+
+Zeta & Zeta 2 do not have any relevant jumper settings.  The 
+hardwired I/O ranges are assumed in the code.
+
+The Dual-IDE board should be jumpered as follows:
+
+K3 (DT/R or /RD): /RD
+P5 (bd ID): 1-2, 3-4 (for $20-$3F port range)
+
+There are no specific N8 jumper settings, but the default
+I/O range starting at $80 is assumed in the published code.
+
+The RC2014 Scott Baker SMC-based floppy module should be jumpered
+for I/O base address 0x50 (SV1: 11-12), JP1 (TS) shorted,
+JP2 (/FAULT) shorted, JP3 (MINI): 2-3, JP4 (/DC/RDY): 2-3.
+
+The RC2014 Scott Baker WDC-based floppy module should be jumpered
+for I/O base address 0x50 (SV1: 11-12), JP1 (/DACK): 1-2,
+JP2 (TC): 2-3.
+
+SmallZ80 does not have any relevant jumper settings.  The 
+hardwired I/O ranges are assumed in the code.
+
+Dyno does not have any relevant jumper settings.  The 
+hardwired I/O ranges are assumed in the code.
+
+Modes of Operation
+------------------
+
+You can select the following test modes.  Please refer to the 
+chart that follows to determine which modes should work with 
+combinations of Z80 CPU speed and media format.
+
+WARNING: In general, only the polling mode is considered fully 
+reliable.  The other modes are basically experimental and 
+should only be used if you know exactly what you are doing.
+
+Polling: Traditional polled input/output.  Works well and very 
+reliable with robust timeouts and good error recovery.  Also, 
+the slowest performance which precludes it from being used 
+with 1.44MB floppy on a 4MHz Z80. This is definitely the mode 
+you want to get working before any others. It does not require 
+J1 (interrupt enable) on DISK I/O and does not care about the 
+setting of J3.
+
+Interrupt: Relies on FDC interrupts to determine when a byte 
+is ready to be read/written.  It does *not* implement a 
+timeout during disk operations.  For example, if there is no 
+disk in the drive, this mode will just hang until a disk is 
+inserted. This mode *requires* that the host has interrupts 
+active using interrupt mode 1 (IM1) and interrupts attached to 
+the FDC controller.  The BIOS must be configured to handle 
+these interrupts safely.
+
+Fast Interrupt: Same as above, but sacrifices additional 
+reliability for faster operation.  This mode will allow a 
+1.44MB floppy to work with a 4MHz Z80 CPU.  However, if any 
+errors occur (even a transient read error which is not 
+unusual), this mode will hang.  The same FDC interrupt 
+requirements as above are required.
+
+INT/WAIT: Same as Fast Interrupt, but uses CPU wait instead of 
+actual interrupt.  This mode is exclusive to the original Disk 
+IO board.  It is subject to all the same issues as Fast 
+Interrupt, but does not need J1 shorted.  J3 is irrelevant.
+
+DRQ/WAIT: Uses pseudo DMA to handle input/output.  Does not 
+require that interrupts (J1) be enabled on the DISK I/O.  
+However, it is subject to all of the same reliability issues 
+as "Fast Interrupt".  This mode is exclusive to the original 
+Disk IO board.  At present, the mode is *not* implemented!
+
+The chart below attempts to describe the combinations that 
+work for me.  By far, the most reliable mode is Polling, but 
+it requires 8MHz CPU for HD disks.
+
+DRQ/WAIT --------------------------------+
+INT/WAIT -----------------------------+  |
+Fast Interrupt --------------------+  |  |
+Interrupt ----------------------+  |  |  |
+Polling ---------------------+  |  |  |  |
+                             |  |  |  |  |
+CPU Speed --------------+    |  |  |  |  |
+                        |    |  |  |  |  |
+                        |    |  |  |  |  |
+
+3.5" DD (720K) ------  4MHz  Y  Y  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+
+3.5" HD (1.44M) -----  4MHz  N  N  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+					   
+5.25" DD (360K) -----  4MHz  Y  Y  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+
+5.25" HD (1.2M) -----  4MHz  N  N  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+					   
+8" DD (1.11M) -------  4MHz  N  N  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+					   
+Y = Yes, works
+N = No, does not work
+X = Experimental, probably won't work
+
+Tracing
+-------
+
+Command/result activity to/from the FDC will be written out if 
+the trace setting is changed from '00' to '01' in setup. 
+Additionally, if a command failure is detected on any command, 
+that specific comand and results are written regardless of the 
+trace setting.
+
+The format of the line written is:
+<OPERATION>: <COMMAND BYTES> --> <RESULT BYTES> [<RESULT>]
+
+For example, this is the output of a normal read operation:
+READ: 46 01 00 00 01 02 09 1B FF --> 01 00 00 00 00 02 02 [OK]
+
+Please refer to the i8272 data sheet for information on the 
+command and result bytes.
+
+Note that the sense interrupt command can return a non-OK 
+result.  This is completely normal in some cases.  It is 
+necessary to "poll" the drive for seek status using sense 
+interrupt.  If there is nothing to report, then the result 
+will be INVALID COMMAND.  Additionally, during a recalibrate 
+operation, it may be necessary to issue the command twice 
+because the command will only step the drive 77 times looking 
+for track 0, but the head may be up to 80 tracks away.  In 
+this case, the first recalibrate fails, but the second should 
+succeed.  Here is what this would look like if trace is turned 
+on:
+
+RECALIBRATE: 07 01 --> <EMPTY> [OK]
+SENSE INTERRUPT: 08 --> 80 [INVALID COMMAND]
+	...
+	...
+	...
+SENSE INTERRUPT: 08 --> 80 [INVALID COMMAND]
+SENSE INTERRUPT: 08 --> 71 00 [ABNORMAL TERMINATION]
+RECALIBRATE: 07 01 --> <EMPTY> [OK]
+SENSE INTERRUPT: 08 --> 21 00 [OK]
+
+Another example is when the FDC has just been reset.  In this 
+case, you will see up to 4 disk change errors.  Again these 
+are not a real problem and to be expected.
+
+When tracing is turned off, the application tries to be 
+intelligent about error reporting.  The specific errors from 
+sense interrupt documented above will be suppressed because 
+they are not a real problem.  All other errors will be 
+displayed.
+
+Error Handling
+--------------
+
+There is no automated error retry logic.  This is very 
+intentional since the point is to expose the controller and 
+drive activity.  Any error detected will result in a prompt to 
+abort, retry, or continue.  Note that some number of errors is 
+considered normal for this technology.  An occasional error 
+would not necessarily be considered a problem.
+
+CPU Speed
+---------
+
+Starting with v5.0, the application adjusts it's timing loops 
+to the actual system CPU speed by querying the BIOS for the 
+current CPU speed.
+
+Interleave
+----------
+
+The format command now allows the specification of a sector 
+interleave.  It is almost always the case that the optimal 
+interleave will be 2 (meaning 2:1).
+
+360K Media
+----------
+
+The 360K media definition should work well for true 360K 
+drives.  However, it will generally not work with 1.2M 
+drives.  This is because these drives spin at 360RPM instead 
+of the 300RPM speed of true 360K drives.  Additionally, 1.2M 
+drives are 80 tracks and 360K drives are 40 tracks and, so 
+far, there is no mechanism in FD to "double step" as a way to 
+use 40 track media in 80 track drives.
+
+With this said, it is possible to configure some 1.2M 5.25" 
+drives to automatically spin down to 300RPM based on a density 
+select signal (DENSEL).  This signal is asserted by FD for 
+360K media, so IF you have configured your drive to react to 
+this signal correctly, you will be able to use the 360K media 
+defintion. Most 1.2M 5.25" drives are NOT configured this way 
+by default. TEAC drives are generally easy to modify and have 
+been tested by the author and do work in this manner.  Note 
+that this does not address the issue of double stepping above; 
+you will just be using the first 40 of 80 tracks.
+
+Support
+-------
+
+I am happy to answer questions as fast and well as I am able. 
+Best contact is wwarthen@gmail.com or post something on the 
+RetroBrew Computers Forum 
+https://www.retrobrewcomputers.org/forum/.
+
+Changes
+-------
+
+WW 8/12/2011
+
+Removed call to pulse TC in the FDC initialization after 
+determining that it periodically caused the FDC to write bad 
+sectors.  I am mystified by this, but definitely found it to 
+be true.  Will revisit at some point -- probably a timing 
+issue between puslsing TC and whatever happens next.
+
+Non-DMA mode was being set incorrectly for FAST-DMA mode. It 
+was set for non-DMA even though we were doing DMA.  It is 
+interesting that it worked fine anyway.  Fixed it anyway.
+
+DIO_SETMEDIA was not clearing DCD_DSKRDY as it should.  Fixed.
+
+WW 8/26/2011: v1.1
+
+Added support for Zeta.  Note that INT/WAIT and DRQ/WAIT are 
+not available on Zeta.  Note that Zeta provides the ability to 
+perform a reset of the FDC independent of a full CPU reset.  
+This is VERY useful and the FDC is reset anytime a drive reset 
+is required.
+
+Added INT/WAIT support.
+
+WW 8/28/2011: V1.2
+
+All changes in this version are Zeta specific.  Fixed FDC 
+reset logic and motor status display for Zeta (code from 
+Sergey).
+
+Modified Zeta disk change display to include it in the command 
+output line.  This makes more sense because a command must be 
+issued to select the desired drive first.  You can use the 
+SENSE INT command id you want to check the disk change value 
+at any time.  It will also be displayed with any other command 
+output display.
+
+WW 9/1/2011: V1.3
+
+Added CPUFREQ configuration setting to tune delays based on 
+cpu speed.  The build app is set for 8MHz which also seems to 
+work well for 4MHz CPU's.  Faster CPU speeds will probably 
+require tuning this setting.
+
+WW 9/5/2011: V1.4
+
+Changed the polling execution routines to utilize CPUFREQ 
+variable to optimize timeout counter.  Most importantly, this 
+should allow the use of faster CPUs (like 20MHz).
+
+WW 9/19/2011: V1.5
+
+Zeta changes only.  Added a call to FDC RESET after any 
+command failure.  This solves an issue where the drive remains 
+selected if a command error occurs.  Also added FDC RESET to 
+FDC CONTROL menu.
+
+WW 10/7/2011: V2.0
+
+Added support for DIDE.  Only supports polling IO and it does 
+not appear any other modes are possible given the hardware 
+constraints.
+
+WW 10/13/2011: V2.1
+
+Modified to support N8.  N8 is essentially identical to Dual 
+IDE. The only real change is the IO addresses.  In theory, I 
+should be able to support true DMA on N8 and will work on that.
+
+WW 10/20/2011: v2.2
+
+I had some problems with the results being read were sometimes 
+missing a byte.  Fixed this by taking a more strict approach 
+to watching the MSR for the exact bits that are expected.
+
+WW 10/22/2011: V2.3
+
+After spending a few days trying to track down an intermittent 
+data corruption issue with my Dual IDE board, I added a verify 
+function.  This helped me isolate the problem very nicely 
+(turned out to be interference from the bus monitor).
+
+WW 11/25/2011: V2.4
+
+Preliminary support for DISKIO V3.  Basically just assumed 
+that it operates just like the Zeta.  Needs to be verified 
+with real hardware as soon as I can.
+
+WW 1/9/2012: V2.5
+
+Modified program termination to use CP/M reset call so that a 
+warm start is done and all drives are logged out.  This is 
+important because media may have been formatted during the 
+program execution.
+
+WW 2/6/2012: v2.6
+
+Added support for 5.25" drives as tested by Sergio.
+
+WW 4/5/2012: v2.7
+
+Added support for 8" drives as tested by Jim Harre.
+
+WW 4/6/2012: v2.7a
+
+Fixed issue with media selection menu to remove duplicate 
+entries.
+
+WW 4/8/2012: v2.7b
+
+Corrected the handling of the density select signal.
+
+WW 5/22/2012: v2.8
+
+Added new media definitions (5.25", 320K).
+
+WW 6/1/2012: v2.9
+
+Added interleave capability on format.
+
+WW 6/5/2012: v3.0
+
+Documentation cleanup.
+
+WW 7/1/2012: v3.1
+
+Modified head load time (HLT) for 8" media based on YD-180 
+spec.  Now set to 50ms.
+
+WW 6/17/2013: v3.2
+
+Cleaned up SRT, HLT, and HUT values.
+
+SK 2/10/2015: v3.3
+
+Added Zeta SBC v2 support (Sergey Kiselev)
+
+WW 3/25/2015: v4.0
+
+Renamed from FDTST --> FD
+
+WW 9/2/2017: v5.0
+
+Renamed from FD to FDU.
+Added runtime selection of FDC hardware.
+Added runtime timing adjustment.
+
+WW 12/16/2017: v5.1
+
+Improved polling version of read/write to fix occasional overrun errors.
+
+WW 1/8/2018: v5.2
+
+Added support for RC2014 hardware:
+  - Scott Baker SMC 9266 FDC module
+  - Scott Baker WDC 37C65 FDC module
+
+WW 9/5/2018: v5.3
+  - Removed use of pulsing TC to end R/W operations after one sector and
+    instead set EOT = R (sector number) so that after desired sector is
+    read, R/W stops with end of cylinder error which is a documented
+    method for controling number of sectors R/W.  This specific termination
+    condition is no longer considered an error, but a successful end of
+    operation.
+  - Added support for SmallZ80
+
+WW 5/1/2020: v5.4
+  - Added support for Dyno (based on work by Steve Garcia)

Doc/ReadMe.txt

@@ -10,31 +10,84 @@ This directory ("Doc") is part of the RomWBW System Software
 distribution archive.  It contains documentation for components of 
 the system.
 
-CPM Manual:
+
+CPM Manual ("CPM Manual.pdf")
+-----------------------------
 
 The original DRI CP/M 2.x Operating System Manual.  This should be 
 considered the primary reference for system operation.  The section 
 on CP/M 2 Alteration can be ignored since this work has already been 
 completed as part of the RomWBW distribution.
 
-FDisk Manual:
+
+CPM3 Command Summary ("CPM3 Command Summary.pdf")
+CPM3 Programmer's Guide ("CPM3 Programmers Guide.pdf")
+CPM3 System Guide ("CPM3 System Guide.pdf")
+CPM3 User's Guide ("CPM3 Users Guide.pdf")
+------------------------------------------------------
+
+The original DRI CP/M 3.0 Operating System Documentation Set.  This
+should be considered the primary reference for CP/M 3 system operation.
+
+
+DDTZ Manual ("DDTZ.doc")
+------------------------
+
+Manual for the DDTZ v2.7 debug tool included on the ROM drive.
+
+
+FDisk Manual ("FDisk Manual.pdf")
+---------------------------------
 
 The operational manual for John Coffman's hard disk partitioning 
 program.  This program is included in RomWBW as FDISK80.
 
-RomWBW Architecture:
+
+Floppy Disk Utility Documentation ("FDU.tst")
+---------------------------------------------
+
+Operational documentation for the RomWBW FDU application.
+
+
+Hard Disk Anatomy ("Hard Disk Anatomy.pdf")
+-------------------------------------------
+
+Diagram of a CP/M & MS-DOS (FAT) hybrid hard disk layout.
+
+
+NZCOM User's Manual ("NZCOM Users Manual.pdf")
+----------------------------------------------
+
+NZCOM operating system operation manual.
+
+
+RomWBW Architecture ("RomWBW Architecture.pdf")
+-----------------------------------------------
 
 Document describing the architecture of the RomWBW HBIOS.  It 
 includes reference information for the HBIOS calls.
 
-ZCPR Manual:
+
+Z180 ASCI Baud Rate Options ("Z180 ASCI Baud Rate Options.pdf")
+---------------------------------------------------------------
+
+The Z180 processor's ASCI serial ports have a limited set of
+baud rate divisors.  These divisors are relative to the CPU
+clock rate.  This document provides a list of the possible
+baud rates for typical CPU clock rates.
+
+
+ZCPR Manual ("ZCPR Manual.pdf")
+-------------------------------
 
 ZCPR is the command proccessor portion of Z-System.  This is the 
 manual for ZCPR 1.x as included in RomWBW.  The installation 
 instructions can be ignored since that work has already been 
 completed as part of the RomWBW distribution.
 
-ZSDOS Manual:
+
+ZSDOS Manual ("ZSDOS Manual.pdf")
+---------------------------------
 
 ZSDOS is the DOS portion of Z-System.  This is the manual fo ZSDOS 
 1.x as included in RomWBW.  The installation instructions can be 

Doc/Testing Notes.txt

@@ -0,0 +1,165 @@
+SIMH (X)
+----
+- Test UART driver
+- Test HDSK driver
+
+Zeta 1 (X)
+------
+- Test UART driver
+- Test PPP detection (startup w/ and w/o PPP)
+- Test boot to CRT
+- Test PPPSD driver
+- Test PPPCON driver (video & kbd)
+- Test FD driver
+- Test FDU app
+
+Zeta 2 (X)
+------
+- Test UART driver
+- Test PPP detection (startup w/ and w/o PPP)
+- Test boot to CRT
+- Test PPPSD driver
+- Test PPPCON driver (video & kbd)
+- Test FD driver
+- Test FDU app
+
+RC2014 (X)
+------
+- Test SIO driver (Serial Module)
+- Test ACIA driver (Dual Serial Module)
+- Test IDE driver (Compact Flash Module)
+- Test PPIDE driver (IDE Module)
+- Test FD driver (SMC and WDC)
+- Test FDU app (SMC and WDC)
+
+N8-2312 (X)
+-------
+- Test ASCI driver
+- Test SD driver (CSIO mode)
+- Test FD driver
+- Test FDU app
+- Test TMS driver (video & kbd)
+
+N8-2511 ( )
+-------
+- Test ASCI driver
+- Test SD driver (Juha mode)
+- Test FD driver
+- Test FDU app
+- Test TMS driver (video & kbd)
+
+SBC (X)
+---
+- Test UART driver
+- Test PPIDE driver
+- Test PPISD driver
+- Test PRP detection
+- Test boot to CRT console
+
+MK4 (X)
+---
+- Test ASCI driver
+- Test IDE driver
+- Test SD driver
+- Test PRP detection
+
+RAMF (X)
+----
+- Test RAMF driver
+
+PRP (X)
+---
+- Test PRPSD driver
+- Test PRPCON driver (video & kbd)
+
+SCG (X)
+---
+- Test TMS driver (video)
+
+VDU (X)
+---
+- Test CVDU driver (video & kbd)
+
+CVDU (X)
+----
+- Test CVDU driver (video & kbd)
+
+VGA (X)
+---
+- Test VGA driver (video & kbd)
+
+DIO (X)
+---
+- Test FD driver
+- Test FDU app
+- Test IDE driver
+
+DIO3 (X)
+----
+- Test FD driver
+- Test FDU app
+- Test PPIDE driver
+
+DIDE (X)
+----
+- Test FD driver
+- Test FDU app
+- Test IDE driver
+
+DSD (X)
+---
+- Test SD driver
+
+4UART (X)
+-----
+- Test UART driver
+
+
+UNA (X)
+---
+- General Startup
+- Boot from disk functionality
+- Image loading
+- Monitor
+- XM app
+- ASSIGN app
+- MODE app
+- SYSCOPY app
+- OSLDR app
+- FDU app
+- FDISK80 app
+
+GENERAL (X)
+-------
+- Boot to ROM
+- Boot to Disk
+- Boot to Monitor
+- XM app
+- XM port auto-detect
+- ASSIGN app
+- MODE app
+- SYSCOPY app
+- OSLDR app
+- FDU app
+- FDISK80 app
+- TUNE app
+
+RESULTS
+-------
+- Missing HBIOS startup banner (X)
+- PANIC while printing Serial device inventory (X)
+- Unexpected interrupt signals not handled well (X)
+- Fix IT_??? usage (X)
+- Fix HB_DI/HB_EI in PEEK/POKE/BNKCPY (X)
+- Fix SIMH timer interrupt setup (X)
+- Move DI/EI in PEEK/POKE/BNKCPY to API layer? (X)
+- RETI vs. JP in page zero when INTMODE = 0 (X)
+- Check interrupt stack space (X)
+- If an early INT fires, we return with INTs enabled (not good) (X)
+- PPPCON init should display ANSI 80x25 or similar (X)
+- Add INT MODE X message to early boot messages (X)
+- OSLDR fails when LDDS is loaded (X)
+- Add "!!!" to force assembly error as needed ( )
+- TIMER app should check for HBIOS active (X)
+- Halt system after bad interrupt??? ( )
+- Adapt and bundle PLAYER.COM (X)

Makefile

@@ -0,0 +1,19 @@
+all:
+	cd Tools/unix ; make
+	cd Source ; make
+	cd Source/Images ; make
+
+clean:
+	cd Tools/unix ; make clean
+	cd Source ; make clean
+	cd Binary ; make clean
+
+clobber:
+	cd Tools/unix ; make clobber
+	cd Source ; make clobber
+	cd Binary ; make clobber
+	rm -f typescript
+
+diff:
+	cd Source ; make diff
+

Readme.unix

@@ -0,0 +1,49 @@
+this tree now contains makefiles and tools to build on Linux and MacosX
+Linux is rather more thoroughly tested compared to os-x.
+
+to get here, TASM and the propeller generation tools needed to be replaced,
+and since the unix filesystem is usually case-sensitive, and CP/M and windows
+are not, the cpm tools were made case-insensitive.
+
+TASM was replaced with uz80as, which implements a subset of TASM and fixes some
+bugs.  however, I needed to add some functionality to make it build the sources
+as they exist in this tree.   in particular, one thing to be very careful of is
+that TASM is not entirely consistent with respect to the .DS directive.
+it's usually a bad idea to mix .DS, .FILL, .DB with .ORG.  
+	.DS n is best thought of as .ORG $ + n
+	.ORG changes the memory pointer, but does not change the file output point.
+		it works a lot more like M80, SLR* .phase
+
+it assumes that you have some standard system tools and libraries installed
+specifically: gcc, gnu make, libncurses
+
+to build:
+	cd to the top directory and type make.
+
+heavy use is made of make's include facility and pattern rules.
+the master rule set is in Tools/Makefile.inc.  changes here will affect
+almost every Makefile, and where exceptions are needed, the overrides are
+applied in the lower Makefiles.
+
+these tools can run a windows-linux regression test, where all the binaries are
+compared to a baseline windows build.
+
+Credit:
+
+	uz80as was written by Jorge Giner Cordero, jorge.giner@hotmail.com,
+	and the original source can be found at https://github.com/jorgicor/uz80as
+
+	the propeller tools use bstc and openspin, parallax tools from 
+	http://www.fnarfbargle.com/bst.html https://github.com/parallaxinc/OpenSpin
+	note that bst is not open source or even currently maintained, so I could 
+	not generate a version for 64 bit osx.
+
+	cpmtools were the most current I could find, and it has been hacked to do
+	case-insensitivity. these are not marked, and are not extensive.
+
+	zx is from distributed version, and also has local hacks for case insensitivity.
+	both zx and cpmtools ship with an overly complicated makefile generation system
+	and this is ignored.
+
+	this whole linux build framework is the work of Curt Mayer, curt@zen-room.org.
+	use it for whatever you like; this is not my day job.

Source/Apps/Assign.asm

@@ -20,6 +20,9 @@
 ; Change Log:
 ;   2016-03-21 [WBW] Updated for HBIOS 2.8
 ;   2016-04-08 [WBW] Determine key memory addresses dynamically
+;   2019-08-07 [WBW] Fixed DPB selection error
+;   2019-11-17 [WBW] Added preliminary CP/M 3 support
+;   2019-12-24 [WBW] Fixed location of BIOS save area
 ;_______________________________________________________________________________
 ;
 ; ToDo:
@@ -38,14 +41,27 @@ bdos	.equ	$0005		; BDOS invocation vector
 ;
 stamp	.equ	$40		; loc of RomWBW CBIOS zero page stamp
 ;
-rmj	.equ	2		; CBIOS version - major
-rmn	.equ	8		; CBIOS version - minor
+rmj	.equ	3		; CBIOS version - major
+rmn	.equ	0		; CBIOS version - minor
 ;
 ;===============================================================================
 ; Code Section
 ;===============================================================================
 ;
 	.org	$100
+;
+	; relocate to high memory
+	ld	hl,image
+	ld	de,$8000
+	ld	bc,modsize
+	ldir
+	jp	start
+;
+image	.equ	$
+;
+	.org	$8000
+;
+start:
 ;
 	; setup stack (save old value)
 	ld	(stksav),sp	; save stack
@@ -83,6 +99,13 @@ init:
 	ld	de,-3		; adjustment for start of table
 	add	hl,de		; HL now has start of table
 	ld	(bioloc),hl	; save it
+;
+	; get CP/M version and save it
+	ld	c,$0C		; function number
+	call	bdos		; do it, HL := version
+	ld	(cpmver),hl	; save it
+	ld	a,l		; low byte
+	cp	$30		; CP/M 3.0?
 ;
 	; get location of config data and verify integrity
 	ld	hl,stamp	; HL := adr or RomWBW zero page stamp
@@ -122,6 +145,11 @@ init:
 	inc	hl		; ... into DE to get
 	ld	d,(hl)		; ... DPB map pointer
 	ld	(dpbloc),de	; and save it	
+;
+	; test for CP/M 3 and branch if so
+	ld	a,(cpmver)	; low byte of cpm version
+	cp	$30		; CP/M 3.0?
+	jp	nc,initcpm3	; handle CP/M 3.0 or greater
 ;
 	; make a local working copy of the drive map
 	ld	hl,(maploc)	; copy from CBIOS drive map
@@ -192,6 +220,66 @@ initx:
 	xor	a		; signal success
 	ret			; return
 ;
+; CP/M 3 initialization
+;
+initcpm3:
+	ld	hl,(bioloc)
+	ld	de,22*3		; offset of DRVTBL func
+	add	hl,de		; HL := DRVTBL func
+	call	jphl		; do it, HL := DRVTBL adr
+	ld	(drvtbl),hl	; save it
+;
+	; switch to sysbnk
+	ld	hl,(bioloc)
+	ld	de,27*3		; offset of SELMEM func
+	add	hl,de		; HL := SELMEM func
+	ld	a,0		; bank 0 is system bank
+	call	jphl
+;
+	; copy CP/M 3 drvtbl to drvmap working copy
+	ld	hl,(drvtbl)	; get drive table in HL
+	ld	de,mapwrk	; DE := working drive map
+	ld	b,16
+initc2:
+	push	hl		; save drvtbl entry adr
+	ld	a,(hl)		; deref HL to get DPH adr
+	inc	hl		; ...
+	ld	h,(hl)		; ...
+	ld	l,a		; ...
+	ld	a,l		; check for
+	or	h		; ... zero
+	jr	nz,initc3	; if not zero, copy entry
+	inc	de		; ... else bump past unit field
+	jr	initc4		; ... and continue without copying
+initc3:
+	dec	hl		; back up to
+	dec	hl		; ... unit
+	ld	a,(hl)		; get unit from drvtbl
+	ld	(de),a		; save unit to drvmap
+	inc	hl		; bump to slice
+	inc	de		; bump to slice
+	ld	a,(hl)		; get slice from drvtbl
+	ld	(de),a		; save slice to drvmap
+initc4:	
+	inc	de		; bump past slice
+	inc	de		; skip
+	inc	de		; ... dph
+	pop	hl		; back to drvtbl entry
+	inc	hl		; bump to
+	inc	hl		; ... next drvtbl entry
+	djnz	initc2
+;
+	; switch back to tpabnk
+	ld	hl,(bioloc)
+	ld	de,27*3		; offset of SELMEM func
+	add	hl,de		; HL := SELMEM func
+	ld	a,1		; bank 1 is tpa bank
+	call	jphl
+;
+ 	; return success
+	xor	a		; signal success
+	ret			; return
+;
 ; Process command line
 ;
 process:
@@ -373,9 +461,13 @@ devlstu1:
 ; Install the new drive map into CBIOS
 ;
 install:
+	ld	a,(cpmver)	; low byte of CP/M version
+	cp	$30		; CP/M 3.0?
+	jp	nc,instcpm3	; handle CP/M 3.0 or greater
+;
 	; capture CBIOS snapshot and stack frame for error recovery
 	ld	hl,(bioloc)	; start of CBIOS
-	ld	de,$8000	; save it here
+	ld	de,$1000	; save it here
 	ld	bc,(biosiz)	; size of CBIOS
 	ldir			; save it
 	ld	(xstksav),sp	; save stack frame
@@ -529,15 +621,21 @@ makdphuna1:	; handle ram/rom
 	ld	e,2		; otherwise, must be ram drive
 	jr	makdph0		; continue
 ;
-makdphwbw:	; determine appropriate dpb (WBW mode)
+makdphwbw:	; determine appropriate dpb (WBW mode, unit number in A)
 ;
+	ld	c,a		; unit number to C
+	ld	b,$17		; HBIOS: Report Device Info
+	rst	08		; call HBIOS, return w/ device type in D, physical unit in E
+	ld	a,d		; device type to A
+	cp	$00		; ram/rom?
+	jr	nz,makdph00	; if not, skip ahead to other types
+	ld	a,e		; physical unit number to A
 	ld	e,1		; assume rom
-	cp	$00+0		; rom?
+	cp	$00		; rom?
 	jr	z,makdph0	; yes, jump ahead
-	ld	e,2		; assume ram
-	cp	$00+1		; ram?
-	jr	z,makdph0	; yes, jump ahead
-	and	$F0		; ignore unit nibble now
+	ld	e,2		; otherwise ram
+	jr	makdph0		; jump ahead
+makdph00:	
 	ld	e,6		; assume floppy
 	cp	$10		; floppy?
 	jr	z,makdph0	; yes, jump ahead
@@ -580,27 +678,7 @@ makdph1:
 	dec	de		; ... prefix data (cks & als buf sizes)
 	call	makdph2		; handle cks buf, then fall thru for als buf
 	ret	nz		; bail out on error
-
-;makdph2:
-;	ex	de,hl		; point hl to cks/als size adr
-;	ld	c,(hl)		; bc := cks/als size
-;	inc	hl		; ... and bump
-;	ld	b,(hl)		; ... past
-;	inc	hl		; ... cks/als size
-;	ex	de,hl		; bc and hl roles restored
-;	ld	a,b		; check to see
-;	or	c		; ... if bc is zero
-;	jr	z,makdph3	; if zero, bypass alloc, use zero for address
-;	call	alloc		; alloc bc bytes, address returned in bc
-;	jp	nz,instovf	; handle overflow error
-;makdph3:
-;	ld	(hl),c		; save cks/als buf
-;	inc	hl		; ... address in
-;	ld	(hl),b		; ... dph and bump
-;	inc	hl		; ... to next dph entry	
-;	xor	a		; signal success
-;	ret
-
+;
 makdph2:
 	; DE = address of CKS or ALS buf to allocate
 	; HL = address of field in DPH to get allocated address
@@ -638,12 +716,96 @@ makdph3:
 	xor	a		; signal success
 	ret
 ;
+;
+;
+instcpm3:
+;
+	; switch to sysbnk
+	ld	hl,(bioloc)
+	ld	de,27*3		; offset of SELMEM func
+	add	hl,de		; HL := SELMEM func
+	ld	a,0		; bank 0 is system bank
+	call	jphl
+;
+	; copy drvmap working copy to CP/M 3 drvtbl
+	ld	hl,(drvtbl)	; get drvtbl address
+	ld	a,(hl)		; deref HL to get DPH0 adr
+	inc	hl		; ...
+	ld	h,(hl)		; ...
+	ld	l,a		; ...
+	ld	(dphadr),hl	; save starting dphadr
+	
+	
+	ld	hl,(drvtbl)	; get drive table in HL
+	ld	de,mapwrk	; DE := working drive map
+	ld	b,16
+instc1:
+	ld	a,(de)		; get unit field of mapwrk
+	inc	a		; test for $FF
+	jr	nz,instc2	; if used, do copy
+	xor	a		; zero accum
+	ld	(hl),a		; zero lsb of drvtbl entry adr
+	inc	hl		; move to msb
+	ld	(hl),a		; zero msb of drvtbl entry adr
+	inc	hl		; bump to start of next drvtbl entry
+	inc	de		; bump to next mapwrk entry
+	inc	de		; ...
+	inc	de		; ...
+	inc	de		; ...
+	jr	instc3		; resume loop without copy
+;
+instc2:	
+	push	hl		; save drvtbl entry adr
+	push	de		; save mapwrk entry adr
+	ld	de,(dphadr)	; get cur dph adr
+	ld	(hl),e		; save dph adr to drvtbl
+	inc	hl		; ...
+	ld	(hl),d		; ...
+	ex	de,hl		; dph adr to HL
+	pop	de		; restore mapwrk entry adr
+	dec	hl		; backup to unit
+	dec	hl		; ...
+	ld	a,(de)		; get unit from mapwrk
+	ld	(hl),a		; put unit into DPH field
+	inc	de		; bump to slice field of mapwrk
+	inc	hl		; bump to slice field of DPH field
+	ld	a,(de)		; get slice from mapwrk
+	ld	(hl),a		; put slice into DPH field
+	inc	de		; bump to next mapwrk entry
+	inc	de		; ...
+	inc	de		; ...
+	pop	hl		; back to drvtbl entry
+	inc	hl		; bump to
+	inc	hl		; ... next drvtbl entry
+instc3:
+	push	hl		; save drvtbl entry adr
+	push	de		; save mapwrk entry adr
+	ld	hl,(dphadr)	; get cur dph address
+	ld	de,$23		; size of xdph
+	add	hl,de		; bump to next dph
+	ld	(dphadr),hl	; save it
+	pop	de		; recover mapwrk entry adr
+	pop	hl		; recover drvtbl entry adr
+	djnz	instc1
+;
+	; switch back to tpabnk
+	ld	hl,(bioloc)
+	ld	de,27*3		; offset of SELMEM func
+	add	hl,de		; HL := SELMEM func
+	ld	a,1		; bank 1 is tpa bank
+	call	jphl
+;
+	call	drvrst		; perform BDOS drive reset
+;
+	xor	a		; signal success
+	ret
+;
 ; Handle overflow error in installation
 ;
 instovf:
 	; restore stack frame and CBIOS image
 	ld	sp,(xstksav)	; restore stack frame
-	ld	hl,$8000	; start of CBIOS image buffer
+	ld	hl,$1000	; start of CBIOS image buffer
 	ld	de,(bioloc)	; start of CBIOS
 	ld	bc,(biosiz)	; size of CBIOS
 	ldir			; restore it
@@ -1636,6 +1798,9 @@ bioend	.dw	0		; CBIOS ending address
 biosiz	.dw	0		; CBIOS size (in bytes)
 maploc	.dw	0		; location of CBIOS drive map table
 dpbloc	.dw	0		; location of CBIOS DPB map table
+cpmver	.dw	0		; CP/M version
+drvtbl	.dw	0		; CP/M 3 drive table address
+dphadr	.dw	0		; CP/M 3 working value for DPH
 ;
 drives:
 dstdrv	.db	0		; destination drive
@@ -1701,10 +1866,10 @@ stack	.equ	$		; stack top
 ; Messages
 ;
 indent	.db	"   ",0
-msgban1	.db	"ASSIGN v1.0c for RomWBW CP/M 2.2, 21-Apr-2016",0
+msgban1	.db	"ASSIGN v1.1a for RomWBW CP/M, 24-Dec-2019",0
 msghb	.db	" (HBIOS Mode)",0
 msgub	.db	" (UBIOS Mode)",0
-msgban2	.db	"Copyright 2016, Wayne Warthen, GNU GPL v3",0
+msgban2	.db	"Copyright 2019, Wayne Warthen, GNU GPL v3",0
 msguse	.db	"Usage: ASSIGN D:[=[{D:|<device>[<unitnum>]:[<slicenum>]}]][,...]",13,10
 	.db	"  ex. ASSIGN           (display all active assignments)",13,10
 	.db	"      ASSIGN /?        (display version and usage)",13,10
@@ -1728,5 +1893,7 @@ msgint	.db	"Multiple drive letters reference one filesystem, aborting!",0
 msgnoa	.db	"Drive A: is unassigned, aborting!",0
 msgdos	.db	"DOS error, return code=0x",0
 msgmem	.db	" Disk Buffer Bytes Free",0
+;
+modsize	.equ	$ - start
 ;
 	.end

Source/Apps/Build.cmd

@@ -2,6 +2,7 @@
 setlocal
 
 set TOOLS=../../Tools
+set APPBIN=..\..\Binary\Apps
 
 set PATH=%TOOLS%\tasm32;%TOOLS%\zx;%PATH%
 
@@ -15,12 +16,22 @@ call :asm SysCopy || goto :eof
 call :asm Assign || goto :eof
 call :asm Format || goto :eof
 call :asm Talk || goto :eof
-call :asm OSLdr || goto :eof
 call :asm Mode || goto :eof
+call :asm RTC || goto :eof
+call :asm Timer || goto :eof
+call :asm180 IntTest || goto :eof
 
 zx Z80ASM -SYSGEN/F
 
-setlocal & cd XM125 && call Build || exit /b 1 & endlocal
+zx MAC SURVEY.ASM -$PO
+zx MLOAD25 -SURVEY.COM=SURVEY.HEX
+
+setlocal & cd XM && call Build || exit /b 1 & endlocal
+setlocal & cd FDU && call Build || exit /b 1 & endlocal
+setlocal & cd Tune && call Build || exit /b 1 & endlocal
+setlocal & cd FAT && call Build || exit /b 1 & endlocal
+
+copy *.com %APPBIN%\
 
 goto :eof
 
@@ -28,4 +39,10 @@ goto :eof
 echo.
 echo Building %1...
 tasm -t80 -g3 -fFF %1.asm %1.com %1.lst
-goto :eof
+goto :eof
+
+:asm180
+echo.
+echo Building %1...
+tasm -t180 -g3 -fFF %1.asm %1.com %1.lst
+goto :eof

Source/Apps/Clean.cmd

@@ -4,5 +4,10 @@ setlocal
 if exist *.bin del *.bin
 if exist *.com del *.com
 if exist *.lst del *.lst
+if exist *.hex del *.hex
+if exist *.prn del *.prn
 
-setlocal & cd XM125 && call Clean || exit /b 1 & endlocal
+setlocal & cd XM && call Clean || exit /b 1 & endlocal
+setlocal & cd FDU && call Clean || exit /b 1 & endlocal
+setlocal & cd Tune && call Clean || exit /b 1 & endlocal
+setlocal & cd FAT && call Clean || exit /b 1 & endlocal

Source/Apps/FAT/Build.cmd

@@ -0,0 +1,7 @@
+@echo off
+setlocal
+
+REM FAT.com is currently distributed as a binary application, so
+REM it is not built here.
+
+copy /Y FAT.com ..\..\..\Binary\Apps\

Source/Apps/FAT/Clean.cmd

@@ -0,0 +1,5 @@
+@echo off
+setlocal
+
+REM FAT.com is currently distributed as a binary application, so
+REM we do not delete the .COM file.

Source/Apps/FAT/LICENSE.txt

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

Source/Apps/FAT/Makefile

@@ -0,0 +1,6 @@
+OBJECTS = FAT.com
+NODELETE = FAT.com
+DEST = ../../../Binary/Apps
+
+TOOLS=../../../Tools
+include $(TOOLS)/Makefile.inc

Source/Apps/FAT/ReadMe.txt

@@ -0,0 +1,101 @@
+RomWBW HBIOS CP/M FAT Utility ("FAT.COM")
+
+Author: Wayne Warthen
+Updated: 11-Oct-2019
+
+Application to manipulate and exchange files with a FAT (DOS)
+filesystem.  Runs on any HBIOS hosted CP/M implementation.
+
+USAGE:
+  FAT DIR <path>
+  FAT COPY <src> <dst>
+  FAT REN <from> <to>
+  FAT DEL <path>[<file>|<dir>]
+  FAT MD <path>
+  FAT FORMAT <drv>
+
+  CP/M filespec: <d>:FILENAME.EXT (<d> is CP/M drive letter A-P)
+  FAT filespec:  <u>:/DIR/FILENAME.EXT (<u> is disk unit #)
+	
+LICENSE:
+  GNU GPLv3 (see file LICENSE.txt)
+
+NOTES:
+ - Partitioned or non-partitioned media is handled automatically.
+   A floppy drive is a good example of a non-partitioned FAT
+   filesystem and will be recognized.  Larger media will typically
+   have a partition table which will be recognized by the
+   application to find the FAT filesystem.
+   
+ - Although RomWBW-style CP/M media does not know anything about
+   partition tables, it is entirely possible to have media that
+   has both CP/M and FAT file systems on it.  This is accomplished
+   by creating a FAT filesystem on the media that starts on a track
+   beyond the last track used by CP/M.  Each CP/M slice on a
+   media will occupy a little over 8MB.  So, make sure to start
+   your FAT partition beyond (slice count) * 8MB.
+
+ - The application infers whether you are attempting to reference
+   a FAT or CP/M filesystem via the drive specifier (char before ':').
+   A numeric drive character specifies the HBIOS disk unit number
+   for FAT access.  An alpha (A-P) character indicates a CP/M
+   file system access targeting the specified drive letter.  If there
+   is no drive character specified, the current CP/M filesystem and
+   current CP/M drive is assumed.  For example:
+   
+   "2:README.TXT" refers to FAT file README.TXT on disk unit #2
+   "C:README.TXT" refers to CP/M file README.TXT on CP/M drive C
+   "README.TXT" refers to CP/M file README.TXT on current CP/M drive
+   
+ - Files with SYS, HIDDEN, or R/O only attributes are not given
+   any special treatment.  Such files are found and processed
+   like any other file.  However, any attempt to write to a
+   read-only file will fail and the application will abort.
+ 
+ - It is not currently possible to reference CP/M user areas other
+   than the current user.  To copy files to alternate user areas,
+   you must switch to the desired user number first or use an
+   additional step to copy the file to the desired user area.
+   
+ - Accessing FAT filesystems on a floppy requires the use of
+   RomWBW HBIOS v2.9.1-pre.13 or greater.
+   
+ - Files written are not verified.
+ 
+ - Wildcard matching in FAT filesystems is a bit unusual as
+   implemented by FatFs.  See FatFs documentation.
+
+BUILD NOTES:
+ - Source is maintained on GitHub at https://github.com/wwarthen/FAT
+
+ - Application is based on FatFs.  FatFs source is included.
+
+ - SDCC compiler is required to build (v3.9.0 known working).
+
+ - ZX CP/M emulator is required to build (from RomWBW distribution).
+
+ - See Build.cmd for sample build script under Windows.  References
+   to SDCC and ZX must be updated for your environment.
+   
+ - Note that ff.c (core FatFs code) generates quite a few compiler
+   warnings (all appear to be benign).
+
+TO DO:
+ - Allow ^C to abort any operation in progress.
+ 
+ - Handle wildcards in destination, e.g.:
+     "FAT REN 2:/*.TXT 2:/*.BAK"
+ 
+ - Do something intelligent with R/O and SYS files on FAT
+ 
+HISTORY:
+   2-May-2019: v0.9   (beta) initial release
+   7-May-2019: v0.9.1 (beta) added REN and DEL
+   8-May-2019: v0.9.2 (beta) handle file collisions w/ user prompt
+   8-Oct-2019: v0.9.3 (beta) fixed incorrect filename buffer size (MAX_FN)
+  10-Oct-2019: v0.9.4 (beta) upgraded to FatFs R0.13c
+  10-Oct-2019: v0.9.5 (beta) added MD (make directory)
+  10-Oct-2019: v0.9.6 (beta) added FORMAT
+  11-Oct-2019: v0.9.7 (beta) fix FORMAT to use existing partition table entries
+                             add attributes to directory listing
+		      

Source/Apps/FDU/Build.cmd

@@ -0,0 +1,13 @@
+@echo off
+setlocal
+
+set TOOLS=../../../Tools
+set PATH=%TOOLS%\tasm32;%PATH%
+set TASMTABS=%TOOLS%\tasm32
+
+tasm -t80 -b -fFF FDU.asm FDU.com FDU.lst
+
+if errorlevel 1 goto :eof
+
+copy /Y FDU.com ..\..\..\Binary\Apps\
+copy /Y FDU.txt ..\..\..\Doc\

Source/Apps/FDU/Clean.cmd

@@ -0,0 +1,6 @@
+@echo off
+setlocal
+
+if exist *.com del *.com
+if exist *.lst del *.lst
+if exist *.zip del *.zip

Source/Apps/FDU/FDU.txt

@@ -0,0 +1,514 @@
+================================================================
+Floppy Disk Utility (FDU) v5.3 for RetroBrew Computers 
+Disk IO / Zeta / Dual-IDE / N8 / RC2014 / SmallZ80 / Dyno
+================================================================
+
+Updated January 5, 2020
+by Wayne Warthen (wwarthen@gmail.com)
+
+Application to test the hardware functionality of the Floppy 
+Disk Controller (FDC) on the ECB DISK I/O, DISK I/O V3, ZETA 
+SBC, Dual IDE w/ Floppy, or N8 board.
+ 
+The intent is to provide a testbed that allows direct testing 
+of all possible media types and modes of access.  The 
+application supports read, write, and format by sector, track, 
+and disk as well as a random read/write test.
+
+The application supports access modes of polling, interrupt, 
+INT/WAIT, and DRQ/WAIT.  At present, it supports 3.5" media at 
+DD (720KB) and HD (1.44MB) capacities.  It also now supports 
+5.25" media (720KB and 1.2MB) and 8" media (1.11MB) as well.   
+Additional media will be added when I have time and access to 
+required hardware.  Not all modes are supported on all 
+platforms and some modes are experimental in all cases.
+
+In many ways this application is merely reinventing the wheel 
+and performs functionality similar to existing applications, 
+but I have not seen any other applications for RetroBrew 
+Computers hardware that provide this range of functionality.
+
+While the application is now almost entirely new code, I would 
+like to acknowledge that much was derived from the previous 
+work of Andrew Lynch and Dan Werner.  I also want to credit 
+Sergio Gimenez with testing the 5.25" drive support and Jim 
+Harre with testing the 8" drive support.  Support for Zeta 2 
+comes from Segey Kiselev.  Thanks!
+
+General Usage
+-------------
+
+In general, usage is self explanatory.  At invocation, you 
+must select the floppy disk controller (FDC) that you are 
+using.  Subsequently, the main menu allows you to set the 
+unit, media, and mode to test.  These settings MUST match your 
+situation.  Read, write, format, and verify functions are 
+provided.  A sub-menu will allow you to choose sector, track, 
+disk, or random tests.
+
+The verify function requires a little explanation.  It will 
+take the contents of the current in-memory disk buffer, save 
+it, and compare it to the selected sectors.  So, you must 
+ensure that the sectors to be verified already have been 
+written with the same pattern as the buffer contains.  I 
+typically init the buffer to a pattern, write the pattern to 
+the entire disk, then verify the entire disk.
+
+Another submenu is provided for FDC commands.  This sub-menu 
+allows you to send low-level commands directly to FDC.  You 
+*must* know what you are doing to use this sub-menu.  For 
+example, in order to read a sector using this sub-menu, you 
+will need to perform specify, seek, sense int, and read 
+commands specifying correct values (nothing is value checked 
+in this menu).
+
+Required Hardware/BIOS
+----------------------
+
+Of course, the starting point is to have a supported hardware 
+configuration. The following Z80 / Z180 based CPU boards are 
+supported:
+
+ - SBC V1/2
+ - Zeta
+ - Zeta 2
+ - N8
+ - Mark IV
+ - RC2014 w/ SMC
+ - RC2014 w/ WDC
+ - SmallZ80
+ - Dyno
+
+You must be using either a RomWBW or UBA based OS version.
+
+You must have one of the following floppy disk controllers:
+
+ - Disk IO ECB Board FDC
+ - Disk IO 3 ECB Board FDC
+ - Dual-IDE ECB Board FDC
+ - Zeta SBC onboard FDC
+ - Zeta 2 SBC onboard FDC
+ - N8 SBC onboard FDC
+ - RC2014 Scott Baker SMC-based Floppy Module
+ - RC2014 Scott Baker WDC-based Floppy Module
+ 
+Finally, you will need a floppy drive connected via an 
+appropriate cable:
+
+Disk IO - no twist in cable, drive unit 0/1 must be selected by jumper on drive
+DISK IO 3, Zeta, Zeta 2, RC2014, Dyno - cable with twist, unit 0 after twist, unit 1 before twist
+DIDE, N8, Mark IV, SmallZ80 - cable with twist, unit 0 before twist, unit 1 after twist
+
+Note that FDU does not utilize your systems ROM or OS to 
+access the floppy system.  FDU interacts directly with 
+hardware.  Upon exit, you may need to reset your OS to get the 
+floppy system back into a state that is expected.
+
+The Disk I/O should be jumpered as follows:
+
+J1: depends on use of interrupt modes (see interrupt modes below)
+J2: pins 1-2, & 3-4 jumpered
+J3: hardware dependent timing for DMA mode (see DMA modes below)
+J4: pins 2-3 jumpered
+J5: off
+J6: pins 2-3 jumpered
+J7: pins 2-3 jumpered
+J8: off
+J9: off
+J10: off
+J11: off
+J12: off
+
+Note that J1 can be left on even when not using interrupt 
+modes.  As long as the BIOS is OK with it, that is fine.  Note 
+also that J3 is only relevant for DMA modes, but also can be 
+left in place when using other modes.
+
+The Disk I/O 3 board should be jumpered at the default settings:
+
+JP2: 3-4
+JP3: 1-2 for int mode support, otherwise no jumper
+JP4: 1-2, 3-4
+JP5: 1-2
+JP6: 1-2
+JP7: 1-2, 3-4
+
+Zeta & Zeta 2 do not have any relevant jumper settings.  The 
+hardwired I/O ranges are assumed in the code.
+
+The Dual-IDE board should be jumpered as follows:
+
+K3 (DT/R or /RD): /RD
+P5 (bd ID): 1-2, 3-4 (for $20-$3F port range)
+
+There are no specific N8 jumper settings, but the default
+I/O range starting at $80 is assumed in the published code.
+
+The RC2014 Scott Baker SMC-based floppy module should be jumpered
+for I/O base address 0x50 (SV1: 11-12), JP1 (TS) shorted,
+JP2 (/FAULT) shorted, JP3 (MINI): 2-3, JP4 (/DC/RDY): 2-3.
+
+The RC2014 Scott Baker WDC-based floppy module should be jumpered
+for I/O base address 0x50 (SV1: 11-12), JP1 (/DACK): 1-2,
+JP2 (TC): 2-3.
+
+SmallZ80 does not have any relevant jumper settings.  The 
+hardwired I/O ranges are assumed in the code.
+
+Dyno does not have any relevant jumper settings.  The 
+hardwired I/O ranges are assumed in the code.
+
+Modes of Operation
+------------------
+
+You can select the following test modes.  Please refer to the 
+chart that follows to determine which modes should work with 
+combinations of Z80 CPU speed and media format.
+
+WARNING: In general, only the polling mode is considered fully 
+reliable.  The other modes are basically experimental and 
+should only be used if you know exactly what you are doing.
+
+Polling: Traditional polled input/output.  Works well and very 
+reliable with robust timeouts and good error recovery.  Also, 
+the slowest performance which precludes it from being used 
+with 1.44MB floppy on a 4MHz Z80. This is definitely the mode 
+you want to get working before any others. It does not require 
+J1 (interrupt enable) on DISK I/O and does not care about the 
+setting of J3.
+
+Interrupt: Relies on FDC interrupts to determine when a byte 
+is ready to be read/written.  It does *not* implement a 
+timeout during disk operations.  For example, if there is no 
+disk in the drive, this mode will just hang until a disk is 
+inserted. This mode *requires* that the host has interrupts 
+active using interrupt mode 1 (IM1) and interrupts attached to 
+the FDC controller.  The BIOS must be configured to handle 
+these interrupts safely.
+
+Fast Interrupt: Same as above, but sacrifices additional 
+reliability for faster operation.  This mode will allow a 
+1.44MB floppy to work with a 4MHz Z80 CPU.  However, if any 
+errors occur (even a transient read error which is not 
+unusual), this mode will hang.  The same FDC interrupt 
+requirements as above are required.
+
+INT/WAIT: Same as Fast Interrupt, but uses CPU wait instead of 
+actual interrupt.  This mode is exclusive to the original Disk 
+IO board.  It is subject to all the same issues as Fast 
+Interrupt, but does not need J1 shorted.  J3 is irrelevant.
+
+DRQ/WAIT: Uses pseudo DMA to handle input/output.  Does not 
+require that interrupts (J1) be enabled on the DISK I/O.  
+However, it is subject to all of the same reliability issues 
+as "Fast Interrupt".  This mode is exclusive to the original 
+Disk IO board.  At present, the mode is *not* implemented!
+
+The chart below attempts to describe the combinations that 
+work for me.  By far, the most reliable mode is Polling, but 
+it requires 8MHz CPU for HD disks.
+
+DRQ/WAIT --------------------------------+
+INT/WAIT -----------------------------+  |
+Fast Interrupt --------------------+  |  |
+Interrupt ----------------------+  |  |  |
+Polling ---------------------+  |  |  |  |
+                             |  |  |  |  |
+CPU Speed --------------+    |  |  |  |  |
+                        |    |  |  |  |  |
+                        |    |  |  |  |  |
+
+3.5" DD (720K) ------  4MHz  Y  Y  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+
+3.5" HD (1.44M) -----  4MHz  N  N  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+					   
+5.25" DD (360K) -----  4MHz  Y  Y  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+
+5.25" HD (1.2M) -----  4MHz  N  N  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+					   
+8" DD (1.11M) -------  4MHz  N  N  Y  Y  X
+                       8MHz+ Y  Y  Y  Y  X
+					   
+Y = Yes, works
+N = No, does not work
+X = Experimental, probably won't work
+
+Tracing
+-------
+
+Command/result activity to/from the FDC will be written out if 
+the trace setting is changed from '00' to '01' in setup. 
+Additionally, if a command failure is detected on any command, 
+that specific comand and results are written regardless of the 
+trace setting.
+
+The format of the line written is:
+<OPERATION>: <COMMAND BYTES> --> <RESULT BYTES> [<RESULT>]
+
+For example, this is the output of a normal read operation:
+READ: 46 01 00 00 01 02 09 1B FF --> 01 00 00 00 00 02 02 [OK]
+
+Please refer to the i8272 data sheet for information on the 
+command and result bytes.
+
+Note that the sense interrupt command can return a non-OK 
+result.  This is completely normal in some cases.  It is 
+necessary to "poll" the drive for seek status using sense 
+interrupt.  If there is nothing to report, then the result 
+will be INVALID COMMAND.  Additionally, during a recalibrate 
+operation, it may be necessary to issue the command twice 
+because the command will only step the drive 77 times looking 
+for track 0, but the head may be up to 80 tracks away.  In 
+this case, the first recalibrate fails, but the second should 
+succeed.  Here is what this would look like if trace is turned 
+on:
+
+RECALIBRATE: 07 01 --> <EMPTY> [OK]
+SENSE INTERRUPT: 08 --> 80 [INVALID COMMAND]
+	...
+	...
+	...
+SENSE INTERRUPT: 08 --> 80 [INVALID COMMAND]
+SENSE INTERRUPT: 08 --> 71 00 [ABNORMAL TERMINATION]
+RECALIBRATE: 07 01 --> <EMPTY> [OK]
+SENSE INTERRUPT: 08 --> 21 00 [OK]
+
+Another example is when the FDC has just been reset.  In this 
+case, you will see up to 4 disk change errors.  Again these 
+are not a real problem and to be expected.
+
+When tracing is turned off, the application tries to be 
+intelligent about error reporting.  The specific errors from 
+sense interrupt documented above will be suppressed because 
+they are not a real problem.  All other errors will be 
+displayed.
+
+Error Handling
+--------------
+
+There is no automated error retry logic.  This is very 
+intentional since the point is to expose the controller and 
+drive activity.  Any error detected will result in a prompt to 
+abort, retry, or continue.  Note that some number of errors is 
+considered normal for this technology.  An occasional error 
+would not necessarily be considered a problem.
+
+CPU Speed
+---------
+
+Starting with v5.0, the application adjusts it's timing loops 
+to the actual system CPU speed by querying the BIOS for the 
+current CPU speed.
+
+Interleave
+----------
+
+The format command now allows the specification of a sector 
+interleave.  It is almost always the case that the optimal 
+interleave will be 2 (meaning 2:1).
+
+360K Media
+----------
+
+The 360K media definition should work well for true 360K 
+drives.  However, it will generally not work with 1.2M 
+drives.  This is because these drives spin at 360RPM instead 
+of the 300RPM speed of true 360K drives.  Additionally, 1.2M 
+drives are 80 tracks and 360K drives are 40 tracks and, so 
+far, there is no mechanism in FD to "double step" as a way to 
+use 40 track media in 80 track drives.
+
+With this said, it is possible to configure some 1.2M 5.25" 
+drives to automatically spin down to 300RPM based on a density 
+select signal (DENSEL).  This signal is asserted by FD for 
+360K media, so IF you have configured your drive to react to 
+this signal correctly, you will be able to use the 360K media 
+defintion. Most 1.2M 5.25" drives are NOT configured this way 
+by default. TEAC drives are generally easy to modify and have 
+been tested by the author and do work in this manner.  Note 
+that this does not address the issue of double stepping above; 
+you will just be using the first 40 of 80 tracks.
+
+Support
+-------
+
+I am happy to answer questions as fast and well as I am able. 
+Best contact is wwarthen@gmail.com or post something on the 
+RetroBrew Computers Forum 
+https://www.retrobrewcomputers.org/forum/.
+
+Changes
+-------
+
+WW 8/12/2011
+
+Removed call to pulse TC in the FDC initialization after 
+determining that it periodically caused the FDC to write bad 
+sectors.  I am mystified by this, but definitely found it to 
+be true.  Will revisit at some point -- probably a timing 
+issue between puslsing TC and whatever happens next.
+
+Non-DMA mode was being set incorrectly for FAST-DMA mode. It 
+was set for non-DMA even though we were doing DMA.  It is 
+interesting that it worked fine anyway.  Fixed it anyway.
+
+DIO_SETMEDIA was not clearing DCD_DSKRDY as it should.  Fixed.
+
+WW 8/26/2011: v1.1
+
+Added support for Zeta.  Note that INT/WAIT and DRQ/WAIT are 
+not available on Zeta.  Note that Zeta provides the ability to 
+perform a reset of the FDC independent of a full CPU reset.  
+This is VERY useful and the FDC is reset anytime a drive reset 
+is required.
+
+Added INT/WAIT support.
+
+WW 8/28/2011: V1.2
+
+All changes in this version are Zeta specific.  Fixed FDC 
+reset logic and motor status display for Zeta (code from 
+Sergey).
+
+Modified Zeta disk change display to include it in the command 
+output line.  This makes more sense because a command must be 
+issued to select the desired drive first.  You can use the 
+SENSE INT command id you want to check the disk change value 
+at any time.  It will also be displayed with any other command 
+output display.
+
+WW 9/1/2011: V1.3
+
+Added CPUFREQ configuration setting to tune delays based on 
+cpu speed.  The build app is set for 8MHz which also seems to 
+work well for 4MHz CPU's.  Faster CPU speeds will probably 
+require tuning this setting.
+
+WW 9/5/2011: V1.4
+
+Changed the polling execution routines to utilize CPUFREQ 
+variable to optimize timeout counter.  Most importantly, this 
+should allow the use of faster CPUs (like 20MHz).
+
+WW 9/19/2011: V1.5
+
+Zeta changes only.  Added a call to FDC RESET after any 
+command failure.  This solves an issue where the drive remains 
+selected if a command error occurs.  Also added FDC RESET to 
+FDC CONTROL menu.
+
+WW 10/7/2011: V2.0
+
+Added support for DIDE.  Only supports polling IO and it does 
+not appear any other modes are possible given the hardware 
+constraints.
+
+WW 10/13/2011: V2.1
+
+Modified to support N8.  N8 is essentially identical to Dual 
+IDE. The only real change is the IO addresses.  In theory, I 
+should be able to support true DMA on N8 and will work on that.
+
+WW 10/20/2011: v2.2
+
+I had some problems with the results being read were sometimes 
+missing a byte.  Fixed this by taking a more strict approach 
+to watching the MSR for the exact bits that are expected.
+
+WW 10/22/2011: V2.3
+
+After spending a few days trying to track down an intermittent 
+data corruption issue with my Dual IDE board, I added a verify 
+function.  This helped me isolate the problem very nicely 
+(turned out to be interference from the bus monitor).
+
+WW 11/25/2011: V2.4
+
+Preliminary support for DISKIO V3.  Basically just assumed 
+that it operates just like the Zeta.  Needs to be verified 
+with real hardware as soon as I can.
+
+WW 1/9/2012: V2.5
+
+Modified program termination to use CP/M reset call so that a 
+warm start is done and all drives are logged out.  This is 
+important because media may have been formatted during the 
+program execution.
+
+WW 2/6/2012: v2.6
+
+Added support for 5.25" drives as tested by Sergio.
+
+WW 4/5/2012: v2.7
+
+Added support for 8" drives as tested by Jim Harre.
+
+WW 4/6/2012: v2.7a
+
+Fixed issue with media selection menu to remove duplicate 
+entries.
+
+WW 4/8/2012: v2.7b
+
+Corrected the handling of the density select signal.
+
+WW 5/22/2012: v2.8
+
+Added new media definitions (5.25", 320K).
+
+WW 6/1/2012: v2.9
+
+Added interleave capability on format.
+
+WW 6/5/2012: v3.0
+
+Documentation cleanup.
+
+WW 7/1/2012: v3.1
+
+Modified head load time (HLT) for 8" media based on YD-180 
+spec.  Now set to 50ms.
+
+WW 6/17/2013: v3.2
+
+Cleaned up SRT, HLT, and HUT values.
+
+SK 2/10/2015: v3.3
+
+Added Zeta SBC v2 support (Sergey Kiselev)
+
+WW 3/25/2015: v4.0
+
+Renamed from FDTST --> FD
+
+WW 9/2/2017: v5.0
+
+Renamed from FD to FDU.
+Added runtime selection of FDC hardware.
+Added runtime timing adjustment.
+
+WW 12/16/2017: v5.1
+
+Improved polling version of read/write to fix occasional overrun errors.
+
+WW 1/8/2018: v5.2
+
+Added support for RC2014 hardware:
+  - Scott Baker SMC 9266 FDC module
+  - Scott Baker WDC 37C65 FDC module
+
+WW 9/5/2018: v5.3
+  - Removed use of pulsing TC to end R/W operations after one sector and
+    instead set EOT = R (sector number) so that after desired sector is
+    read, R/W stops with end of cylinder error which is a documented
+    method for controling number of sectors R/W.  This specific termination
+    condition is no longer considered an error, but a successful end of
+    operation.
+  - Added support for SmallZ80
+
+WW 5/1/2020: v5.4
+  - Added support for Dyno (based on work by Steve Garcia)

Source/Apps/FDU/Makefile

@@ -0,0 +1,8 @@
+OBJECTS = FDU.com
+DOCS = FDU.txt
+DEST = ../../../Binary/Apps
+DOCDEST = ../../../Doc
+TOOLS = ../../../Tools
+include $(TOOLS)/Makefile.inc
+
+%.com: USETASM=1

Source/Apps/Format.asm

@@ -30,8 +30,8 @@ bdos	.equ	$0005		; BDOS invocation vector
 ;;
 ;stamp	.equ	$40		; loc of RomWBW CBIOS zero page stamp
 ;
-rmj	.equ	2		; CBIOS version - major
-rmn	.equ	8		; CBIOS version - minor
+rmj	.equ	3		; CBIOS version - major
+rmn	.equ	0		; CBIOS version - minor
 ;
 ;===============================================================================
 ; Code Section
@@ -201,12 +201,12 @@ stksav	.dw	0		; stack pointer saved at start
 	.fill	stksiz,0	; stack
 stack	.equ	$		; stack top
 ;
-msgban1	.db	"FORMAT v0.1 for RomWBW CP/M 2.2, 24-Apr-2016",0
+msgban1	.db	"FORMAT v0.1a for RomWBW CP/M 2.2, 02-Sep-2017",0
 msghb	.db	" (HBIOS Mode)",0
 msgub	.db	" (UBIOS Mode)",0
-msgban2	.db	"Copyright 2016, Wayne Warthen, GNU GPL v3",0
+msgban2	.db	"Copyright (C) 2017, Wayne Warthen, GNU GPL v3",0
 msguse	.db	"FORMAT command is not yet implemented!",13,10,13,10
-	.db	"Use FD command to physically format floppy diskettes",13,10
+	.db	"Use FDU command to physically format floppy diskettes",13,10
 	.db	"Use CLRDIR command to (re)initialize directories",13,10
 	.db	"Use SYSCOPY command to make disks bootable",13,10
 	.db	"Use FDISK80 command to partition mass storage media",0

Source/Apps/IntTest.asm

@@ -0,0 +1,586 @@
+;===============================================================================
+;
+; INTTEST - Test HBIOS interrupt API functions
+;
+;===============================================================================
+;
+;	Author:  Wayne Warthen (wwarthen@gmail.com)
+;_______________________________________________________________________________
+;
+; Usage:
+;   INTTEST
+;_______________________________________________________________________________
+;
+;===============================================================================
+; Definitions
+;===============================================================================
+;
+stksiz	.equ	$40		; Working stack size
+;
+restart	.equ	$0000		; CP/M restart vector
+bdos	.equ	$0005		; BDOS invocation vector
+;
+bf_sysint	.equ	$FC	; INT function
+;
+bf_sysintinfo	.equ	$00	; INT INFO subfunction
+bf_sysintget	.equ	$10	; INT GET subfunction
+bf_sysintset	.equ	$20	; INT SET subfunction
+;
+;===============================================================================
+; Code Section
+;===============================================================================
+;
+	.org	$100
+;
+	; setup stack (save old value)
+	ld	(stksav),sp	; save stack
+	ld	sp,stack	; set new stack
+;
+	; initialization
+	call	init		; initialize
+	jr	nz,exit		; abort if init fails
+;
+	; process
+	call 	process		; do main processing
+	jr	nz,exit		; abort on error
+;
+exit:	; clean up and return to command processor
+	call	crlf		; formatting
+	ld	sp,(stksav)	; restore stack
+	;jp	restart		; return to CP/M via restart
+	ret			; return to CP/M w/o restart
+;
+; Initialization
+;
+init:
+	call	crlf		; formatting
+	ld	de,msgban	; point to version message part 1
+	call	prtstr		; print it
+;
+	; relocate handler
+	ld	hl,reladr
+	ld	de,$8000
+	ld	bc,hsiz
+	ldir
+;
+initx
+	; initialization complete
+	xor	a		; signal success
+	ret			; return
+;
+; Process
+;
+process:
+;
+; Get info
+;
+	call	crlf2
+	ld	de,msginfo	; message
+	call	prtstr
+;
+	ld	b,bf_sysint	; INT function
+	ld	c,bf_sysintinfo	; INFO subfunction
+	rst	08
+	ld	a,d
+	ld	(intmod),a	; save int mode
+	ld	a,e
+	ld	(veccnt),a	; save vector count
+;
+	push	de
+	call	crlf
+	ld	de,msgmode	; mode
+	call	prtstr
+	pop	de
+	push	de
+	ld	a,d		; interrupt mode
+	call	prtdecb
+	call	crlf
+	ld	de,msgcnt	; count of vectors
+	call	prtstr
+	pop	de
+	ld	a,e
+	call	prtdecb
+;
+; Done if int mode is 0
+;
+	ld	a,(intmod)
+	or	a
+	ret	z
+;
+; List vectors
+;
+	call	crlf2
+	ld	de,msglst	
+	call	prtstr
+	ld	a,(veccnt)	; get count of vectors
+	or	a
+	jr	z,estidx	; bypass if nothing to list
+	ld	b,a		; make it the loop counter
+	ld	c,0		; vector entry index
+;
+lstlp:
+	push	bc
+	call	crlf
+	ld	a,' '
+	call	prtchr
+	call	prtchr
+	ld	a,c
+	call	prthex
+	ld	a,':'
+	call	prtchr
+	ld	e,c
+	ld	b,bf_sysint
+	ld	c,bf_sysintget
+	rst	08
+	push	hl
+	pop	bc
+	call	prthexword
+	pop	bc
+	inc	c
+	djnz	lstlp
+;
+; Establish interrupt vector index to hook
+;
+estidx:
+	call	crlf2
+	ld	de,msgvec
+	call	prtstr
+	call	getbuf
+	ld	hl,lnbuf+1
+	ld	a,(hl)		; get line length
+	or	a		; set flags
+	jr	z,estidx	; nothing entered
+	ld	b,a		; set b to line length
+	inc	hl
+	call	hexbyt
+	jr	c,estidx
+	ld	(vecidx),a
+	ld	hl,veccnt	; check index against valid range
+	cp	(hl)
+	jr	nc,estidx	; vector index out of bounds
+;
+; Hook vector
+;
+	call	crlf2
+	ld	de,msghk1
+	call	prtstr
+	ld	a,(vecidx)
+	call	prthex
+	ld	de,msghk2
+	call	prtstr
+	ld	a,$ff
+	ld	(count),a	; set counter to max value
+;	
+	ld	a,(intmod)
+	cp	1
+	jr	z,hkim
+	cp	2
+	jr	z,hkim
+	ret
+;
+; Setup interrupt handler
+;
+hkim:
+	ld	hl,int		; pointer to my interrupt handler
+	ld	b,bf_sysint
+	ld	c,bf_sysintset	; set new vector
+	ld	a,(vecidx)	; get vector idx
+	ld	e,a		; put in E
+	di
+	rst	08		; do it
+	ld	(chain),hl	; save the chain address
+	ei			; interrupts back on
+	jr	start
+;
+; Wait for counter to countdown to zero
+;
+start:
+	call	crlf2
+	ld	de,msgrun	; message
+	call	prtstr
+	call	crlf2
+	ld	a,(count)
+	ld	e,a
+	call 	prthex		; print it
+	ld	a,13
+	call	prtchr
+loop:
+	call	getchr		; check console
+	cp	$1B		; <esc> to exit
+	jr	z,unhook	; if so, bail out
+	ld	a,(count)	; get current count value
+	cp	e
+	jr	z,loop
+	ld	e,a
+	push	af
+	call 	prthex		; print it
+	ld	a,13
+	call	prtchr
+	pop	af
+	or	a		; set flags
+	jr	z,unhook	; done
+	jr	loop		; and loop
+;
+; Unhook
+;
+unhook:
+	call	crlf2
+	ld	de,msgunhk
+	call	prtstr
+	ld	hl,(chain)	; original vector
+	ld	b,bf_sysint
+	ld	c,bf_sysintset	; set new vector
+	ld	a,(vecidx)	; get vector idx
+	ld	e,a		; put in E
+	di
+	rst	08		; do it
+	ei			; interrupts back on
+;
+	xor	a		; signal success
+	ret			; done
+;
+; Get a character from console, return in A
+; returs zero if nothing available
+;
+getchr:
+	push	bc		; save registers
+	push	de
+	push	hl
+	ld	e,$FF		; read a character
+	ld	c,$06		; BDOS direct i/o function
+	call	bdos		; do it
+	pop	hl		; restore registers
+	pop	de
+	pop	bc
+	ret
+;
+; Get console buffer
+;
+getbuf:
+	push	bc
+	push	de
+	push	hl
+	ld	de,lnbuf
+	ld	c,$0A
+	call	bdos
+	pop	hl
+	pop	de
+	pop	bc
+	ret
+;
+; Print character in A without destroying any registers
+;
+prtchr:
+	push	bc		; save registers
+	push	de
+	push	hl
+	ld	e,a		; character to print in E
+	ld	c,$02		; BDOS function to output a character
+	call	bdos		; do it
+	pop	hl		; restore registers
+	pop	de
+	pop	bc
+	ret
+;
+prtdot:
+;
+	; shortcut to print a dot preserving all regs
+	push	af		; save af
+	ld	a,'.'		; load dot char
+	call	prtchr		; print it
+	pop	af		; restore af
+	ret			; done
+;
+prtcr:
+;
+	; shortcut to print a dot preserving all regs
+	push	af		; save af
+	ld	a,13		; load CR value
+	call	prtchr		; print it
+	pop	af		; restore af
+	ret			; done
+;
+; Print a zero terminated string at (DE) without destroying any registers
+;
+prtstr:
+	push	de
+;
+prtstr1:
+	ld	a,(de)		; get next char
+	or	a
+	jr	z,prtstr2
+	call	prtchr
+	inc	de
+	jr	prtstr1
+;
+prtstr2:
+	pop	de		; restore registers
+	ret	
+;
+; Print the value in A in hex without destroying any registers
+;
+prthex:
+	push	af		; save AF
+	push	de		; save DE
+	call	hexascii	; convert value in A to hex chars in DE
+	ld	a,d		; get the high order hex char
+	call	prtchr		; print it
+	ld	a,e		; get the low order hex char
+	call	prtchr		; print it
+	pop	de		; restore DE
+	pop	af		; restore AF
+	ret			; done
+;
+; print the hex word value in bc
+;
+prthexword:
+	push	af
+	ld	a,b
+	call	prthex
+	ld	a,c
+	call	prthex 
+	pop	af
+	ret
+;
+; print the hex dword value in de:hl
+;
+prthex32:
+	push	bc
+	push	de
+	pop	bc
+	call	prthexword
+	push	hl
+	pop	bc
+	call	prthexword
+	pop	bc
+	ret
+;
+; Convert binary value in A to ascii hex characters in DE
+;
+hexascii:
+	ld	d,a		; save A in D
+	call	hexconv		; convert low nibble of A to hex
+	ld	e,a		; save it in E
+	ld	a,d		; get original value back
+	rlca			; rotate high order nibble to low bits
+	rlca
+	rlca
+	rlca
+	call	hexconv		; convert nibble
+	ld	d,a		; save it in D
+	ret			; done
+;
+; Convert low nibble of A to ascii hex
+;
+hexconv:
+	and	$0F	     	; low nibble only
+	add	a,$90
+	daa	
+	adc	a,$40
+	daa	
+	ret
+;
+; Print value of A or HL in decimal with leading zero suppression
+; Use prtdecb for A or prtdecw for HL
+;
+prtdecb:
+	push	hl
+	ld	h,0
+	ld	l,a
+	call	prtdecw		; print it
+	pop	hl
+	ret
+;
+prtdecw:
+	push	af
+	push	bc
+	push	de
+	push	hl
+	call	prtdec0
+	pop	hl
+	pop	de
+	pop	bc
+	pop	af
+	ret
+;
+prtdec0:
+	ld	e,'0'
+	ld	bc,-10000
+	call	prtdec1
+	ld	bc,-1000
+	call	prtdec1
+	ld	bc,-100
+	call	prtdec1
+	ld	c,-10
+	call	prtdec1
+	ld	e,0
+	ld	c,-1
+prtdec1:
+	ld	a,'0' - 1
+prtdec2:
+	inc	a
+	add	hl,bc
+	jr	c,prtdec2
+	sbc	hl,bc
+	cp	e
+	ret	z
+	ld	e,0
+	call	prtchr
+	ret
+;
+; Start a new line
+;
+crlf2:
+	call	crlf		; two of them
+crlf:
+	push	af		; preserve AF
+	ld	a,13		; <CR>
+	call	prtchr		; print it
+	ld	a,10		; <LF>
+	call	prtchr		; print it
+	pop	af		; restore AF
+	ret
+;
+; Get the next non-blank character from (HL).
+;
+nonblank:
+	ld	a,(hl)		; load next character
+	or	a		; string ends with a null
+	ret	z		; if null, return pointing to null
+	cp	' '		; check for blank
+	ret	nz		; return if not blank
+	inc	hl		; if blank, increment character pointer
+	jr	nonblank	; and loop
+;
+; Convert character in A to uppercase
+;
+ucase:
+	cp	'a'		; if below 'a'
+	ret	c		; ... do nothing and return
+	cp	'z' + 1		; if above 'z'
+	ret	nc		; ... do nothing and return
+	res	5,a		; clear bit 5 to make lower case -> upper case
+	ret			; and return
+;
+; Add the value in A to HL (HL := HL + A)
+;
+addhl:
+	add	a,l		; A := A + L
+	ld	l,a		; Put result back in L
+	ret	nc		; if no carry, we are done
+	inc	h		; if carry, increment H
+	ret			; and return
+;
+; Jump indirect to address in HL
+;
+jphl:
+	jp	(hl)
+;
+; Convert hex chars to a byte value.
+; Enter with HL pointing to buffer with chars to convert
+; and B containing number of chars.  Returns value in A.
+; CF set to indicate error (overflow or invalid char).
+;
+hexbyt:
+	ld	c,0		; working value starts at zero
+hexbyt1:
+	sla	c		; rotate low nibble to high
+	ret	c
+	sla	c
+	ret	c
+	sla	c
+	ret	c
+	sla	c
+	ret	c
+	ld	a,(hl)		; load next char
+	call	hexnibl		; convert to binary
+	ret	c		; abort on error
+	or	c		; combine w/ working value
+	ld	c,a		; and put back in c
+	inc	hl		; next position
+	djnz	hexbyt1		; next character
+	ld	a,c		; ret val to a
+	or	a		; clear carry
+	ret
+;
+; Convert hex character at (HL) to binary value
+; Set CF to indicate invalid character
+;
+hexnibl:
+	; handle '0'-'9'
+	cp	'0'
+	jr	c,hexnibl1		; if < '0', out of range
+	cp	'9'+1
+	jr	nc,hexnibl1		; if > '9', out of range
+	and	$0F			; convert to binary value
+	ret				; and done
+hexnibl1:	
+	; handle 'A'-'F'
+	call	ucase			; force upper case
+	cp	'A'
+	jr	c,hexnibl2		; if < 'A', out of range
+	cp	'F'+1
+	jr	nc,hexnibl2		; if > 'F', out of range
+	and	$0F			; convert to binary value
+	add	a,9			; 
+	ret				; and done
+hexnibl2:
+	; invalid character
+	scf				; signal error
+	ret
+;
+;===============================================================================
+; Storage Section
+;===============================================================================
+;
+intmod	.db	0		; active interrupt mode
+veccnt	.db	0		; count of ingterrupt vectors
+vecidx	.db	0		; vector index to hook
+lnbuf	.db	10,0		; 10 char BDOS line input buffer
+	.fill	10
+;
+stksav	.dw	0		; stack pointer saved at start
+	.fill	stksiz,0	; stack
+stack	.equ	$		; stack top
+;
+; Messages
+;
+msgban	.db	"INTTEST v1.2, 15-May-2019",13,10
+	.db	"Copyright (C) 2019, Wayne Warthen, GNU GPL v3",0
+msginfo	.db	"Interrupt information request...",0
+msgmode	.db	"  Active interrupt mode: ",0
+msgcnt	.db	"  Vector entries in use: ",0
+msglst	.db	"Interrupt vector address list:",0
+msghk1	.db	"Hooking vector ",0
+msghk2	.db	"...",0
+msgunhk	.db	"Unhooking vector...",0
+msgrun	.db	"Interrupt countdown (press <esc> to exit)...",0
+msgvec	.db	"Enter vector to hook (hex): ",0
+;
+;===============================================================================
+; Interrupt Handler
+;===============================================================================
+;
+reladr	.equ	$		; relocation start adr
+;
+	.org	$8000		; code will run here
+;
+int:
+	; count down to zero
+	ld	a,(count)	; get current count value
+	or	a               ; test for zero
+	jr	z,int1		; if zero, leave it alone
+	dec	a               ; decrement
+	ld	(count),a       ; and save
+int1:
+	xor	a		; signal int has NOT been handled
+	; follow the chain...
+	ld	hl,(chain)	; get chain adr
+	jp	(hl)		; go there
+;	ret
+;
+chain	.dw	$0000		; chain address
+count	.db	0		; counter
+;
+hsiz	.equ	$ - $8000	; size of handler to relocate
+	.end

Source/Apps/Makefile

@@ -0,0 +1,14 @@
+OBJECTS = SysGen.com Survey.com \
+	SysCopy.com Assign.com Format.com Talk.com Mode.com RTC.com \
+	Timer.com IntTest.com
+OTHERS = *.hex *.com
+SUBDIRS = XM FDU FAT Tune
+DEST = ../../Binary/Apps
+TOOLS =../../Tools
+
+include $(TOOLS)/Makefile.inc
+
+USETASM = 1
+
+Survey.com: USETASM=0
+

Source/Apps/Mode.asm

@@ -29,6 +29,8 @@
 ;
 ; Change Log:
 ;   2017-08-16 [WBW] Initial release
+;   2017-08-28 [WBW] Handle UNACPM
+;   2018-07-24 [WBW] Fixed bug in getnum23 routine (credit Phil Summers)
 ;_______________________________________________________________________________
 ;
 ; ToDo:
@@ -44,10 +46,10 @@ stksiz	.equ	$40		; Working stack size
 restart	.equ	$0000		; CP/M restart vector
 bdos	.equ	$0005		; BDOS invocation vector
 ;
-stamp	.equ	$40		; loc of RomWBW CBIOS zero page stamp
+ident	.equ	$FFFE		; loc of RomWBW HBIOS ident ptr
 ;
-rmj	.equ	2		; intended CBIOS version - major
-rmn	.equ	8		; intended CBIOS version - minor
+rmj	.equ	3		; intended CBIOS version - major
+rmn	.equ	0		; intended CBIOS version - minor
 ;
 bf_cioinit	.equ	$04	; HBIOS: CIOINIT function
 bf_cioquery	.equ	$05	; HBIOS: CIOQUERY function
@@ -85,28 +87,11 @@ exit:	; clean up and return to command processor
 ; Initialization
 ;
 init:
-;
 	; locate start of cbios (function jump table)
 	ld	hl,(restart+1)	; load address of CP/M restart vector
 	ld	de,-3		; adjustment for start of table
 	add	hl,de		; HL now has start of table
 	ld	(bioloc),hl	; save it
-;
-	; get location of config data and verify integrity
-	ld	hl,stamp	; HL := adr or RomWBW zero page stamp
-	ld	a,(hl)		; get first byte of RomWBW marker
-	cp	'W'		; match?
-	jp	nz,errinv	; abort with invalid config block
-	inc	hl		; next byte (marker byte 2)
-	ld	a,(hl)		; load it
-	cp	~'W'		; match?
-	jp	nz,errinv	; abort with invalid config block
-	inc	hl		; next byte (major/minor version)
-	ld	a,(hl)		; load it
-	cp	rmj << 4 | rmn	; match?
-	jp	nz,errver	; abort with invalid os version
-	inc	hl		; bump past
-	inc	hl		; ... version info
 ;
 	; check for UNA (UBIOS)
 	ld	a,($FFFD)	; fixed location of UNA API vector
@@ -120,22 +105,38 @@ init:
 	ld	a,(hl)		; get next byte
 	cp	$E5		; second byte of UNA push ix instruction
 	jr	nz,initwbw	; if not, not UNA
+;
+	; UNA initialization
 	ld	hl,unamod	; point to UNA mode flag
 	ld	(hl),$FF	; set UNA mode flag
 	ld	a,$FF		; assume max units for UNA
-	ld	a,2		; *debug*
 	ld	(comcnt),a	; ... and save it
 	jr	initx		; UNA init done
 ;
 initwbw:
-	; get count of serial units
+	; get location of config data and verify integrity
+	ld	hl,(ident)	; HL := adr or RomWBW HBIOS ident
+	ld	a,(hl)		; get first byte of RomWBW marker
+	cp	'W'		; match?
+	jp	nz,errinv	; abort with invalid config block
+	inc	hl		; next byte (marker byte 2)
+	ld	a,(hl)		; load it
+	cp	~'W'		; match?
+	jp	nz,errinv	; abort with invalid config block
+	inc	hl		; next byte (major/minor version)
+	ld	a,(hl)		; load it
+	cp	rmj << 4 | rmn	; match?
+	jp	nz,errver	; abort with invalid os version
+;
+	; RomWBW initialization
 	ld	b,bf_sysget	; BIOS SYSGET function
 	ld	c,$00		; CIOCNT subfunction
 	rst	08		; E := serial device unit count
 	ld	a,e		; count to A
 	ld	(comcnt),a	; save it
 ;
-initx:	; initialization complete
+initx
+	; initialization complete
 	xor	a		; signal success
 	ret			; return
 ;
@@ -215,9 +216,7 @@ comset1:
 	jr	nc,comset1a	; ... to handle empty
 ;
 	call	getnum32	; get baud rate into DE:HL
-	;call	crlf		; *debug*
-	;call	prthex32	; *debug*
-	jp	c,errcfg	; Handle error
+	jp	c,errcfg	; Handle overflow error
 	ld	c,75		; Constant for baud rate encode
 	call	encode		; encode into C:4-0
 	jp	nz,errcfg	; Error if encode fails
@@ -819,7 +818,7 @@ getnum32a:
 	cp	'9' + 1		; compare to ascii '9'
 	jr	nc,getnum32c	; abort if above
 ;
-	; valid digit, multiply DE:BC by 10
+	; valid digit, multiply DE:HL by 10
 	; X * 10 = (((x * 2 * 2) + x)) * 2
 	push	de
 	push	hl
@@ -848,11 +847,13 @@ getnum32a:
 	ld	l,a		; back to L
 	jr	nc,getnum32b	; if no carry, done
 	inc	h		; otherwise, bump H
-	jr	nc,getnum32b	; if no carry, done
+	jr	nz,getnum32b	; if no overflow, done
 	inc	e		; otherwise, bump E
-	jr	nc,getnum32b	; if no carry, done
+	jr	nz,getnum32b	; if no overflow, done
 	inc	d		; otherwise, bump D
-	ret	c		; if overflow, ret w/ CF
+	jr	nz,getnum32b	; if no overflow, done
+	scf			; set carry flag to indicate overflow
+	ret			; and return
 ;
 getnum32b:
 	inc	ix		; bump to next char
@@ -944,11 +945,11 @@ errprm:	; command parameter error (syntax)
 	ld	de,msgprm
 	jr	err
 ;
-errinv:	; invalid CBIOS, zp signature not found
+errinv:	; invalid HBIOS, signature not found
 	ld	de,msginv
 	jr	err
 ;
-errver:	; CBIOS version is not as expected
+errver:	; unsupported HBIOS version
 	ld	de,msgver
 	jr	err
 ;
@@ -969,7 +970,7 @@ errcfg:	; Invalid device configuration specified
 	jr	err
 ;
 err:	; print error string and return error signal
-	call	crlf		; print newline
+	call	crlf2		; print newline
 ;
 err1:	; without the leading crlf
 	call	prtstr		; print error string
@@ -1018,18 +1019,18 @@ stack	.equ	$		; stack top
 ; Messages
 ;
 indent	.db	"   ",0
-msgban1	.db	"MODE v1.0 for RomWBW CP/M 2.2, 22-Aug-2017",0
+msgban1	.db	"MODE v1.2, 24-Jul-2018",0
 msghb	.db	" [HBIOS]",0
 msgub	.db	" [UBIOS]",0
-msgban2	.db	"Copyright 2017, Wayne Warthen, GNU GPL v3",0
+msgban2	.db	"Copyright (C) 2017, Wayne Warthen, GNU GPL v3",0
 msguse	.db	"Usage: MODE COM<n>: [<baud>[,<parity>[,<databits>[,<stopbits>]]]] [/P]",13,10
 	.db	"  ex. MODE /?                (display version and usage)",13,10
 	.db	"      MODE                   (display config of all serial ports)",13,10
 	.db	"      MODE COM0:             (display serial unit 0 config)",13,10
 	.db	"      MODE COM1: 9600,N,8,1  (set serial unit 1 config)",0
 msgprm	.db	"Parameter error (MODE /? for usage)",0
-msginv	.db	"Unexpected CBIOS (signature missing)",0
-msgver	.db	"Unexpected CBIOS version",0
+msginv	.db	"Invalid BIOS (signature missing)",0
+msgver	.db	"Unexpected HBIOS version",0
 msgdev	.db	"Invalid device name",0
 msgnum	.db	"Unit or slice number invalid",0
 msgunt	.db	"Invalid device unit number specified",0

Source/Apps/Startup.asm

@@ -0,0 +1,399 @@
+;===============================================================================
+; STARTUP - Application run automatically at OS startup
+;
+;===============================================================================
+;
+;	Author:  Wayne Warthen (wwarthen@gmail.com)
+;_______________________________________________________________________________
+;
+; Usage:
+;   MODE [/?]
+;
+; Operation:
+;   Determines if STARTUP.CMD exists on startup drive, user 0.  If it is
+;   found, it is run via SUBMIT.
+;_______________________________________________________________________________
+;
+; Change Log:
+;   2017-12-01 [WBW] Initial release
+;_______________________________________________________________________________
+;
+; ToDo:
+;  1) Detect OS type (CP/M or ZSYS) and run different batch files as a result.
+;_______________________________________________________________________________
+;
+;===============================================================================
+; Definitions
+;===============================================================================
+;
+stksiz	.equ	$40		; Working stack size
+;
+restart	.equ	$0000		; CP/M restart vector
+bdos	.equ	$0005		; BDOS invocation vector
+;
+ident	.equ	$FFFE		; loc of RomWBW HBIOS ident ptr
+;
+rmj	.equ	2		; intended CBIOS version - major
+rmn	.equ	9		; intended CBIOS version - minor
+;
+bf_cioinit	.equ	$04	; HBIOS: CIOINIT function
+bf_cioquery	.equ	$05	; HBIOS: CIOQUERY function
+bf_ciodevice	.equ	$06	; HBIOS: CIODEVICE function
+bf_sysget	.equ	$F8	; HBIOS: SYSGET function
+;
+;===============================================================================
+; Code Section
+;===============================================================================
+;
+	.org	$100
+;
+	; setup stack (save old value)
+	ld	(stksav),sp	; save stack
+	ld	sp,stack	; set new stack
+;
+	; initialization
+	call	init		; initialize
+	jr	nz,exit		; abort if init fails
+;
+	; process
+	call 	process		; do main processing
+	jr	nz,exit		; abort on error
+;
+exit:	; clean up and return to command processor
+	call	crlf		; formatting
+	ld	sp,(stksav)	; restore stack
+	;jp	restart		; return to CP/M via restart
+	ret			; return to CP/M w/o restart
+;
+; Initialization
+;
+init:
+;
+initx
+	; initialization complete
+	xor	a		; signal success
+	ret			; return
+;
+; Process
+;
+process:
+	; skip to start of first parm
+	ld	ix,$81		; point to start of parm area (past len byte)
+	call	nonblank	; skip to next non-blank char
+	jp	z,runcmd	; no parms, do command processing
+;
+process1:
+	; process options (if any)
+	cp	'/'		; option prefix?
+	jp	nz,erruse	; invalid option introducer
+	call	option		; process option
+	ret	nz		; some options mean we are done (e.g., "/?")
+	inc	ix		; skip option character
+	call 	nonblank	; skip whitespace
+	jr	nz,process1	; continue option checking
+	jp	runcmd		; end of parms, do cmd processing
+;
+;
+;
+runcmd:
+	call	ldfil		; load executable
+	ret	nz		; abort on error
+;
+	xor	a
+	ret
+;
+; Load file for execution
+;
+ldfil:
+	ld	c,15		; BDOS function: Open File
+	ld	de,fcb		; pointer to FCB
+	call	bdos		; do it
+	inc	a		; check for err, 0xFF --> 0x00
+	jp	z,errfil	; handle file not found err
+;
+	ld	c,16		; BDOS function: Close File
+	ld	de,fcb		; pointer to FCB
+	call	bdos		; do it
+	inc	a		; check for err, 0xFF --> 0x00
+	jp	z,errfil	; handle file close err
+;
+	xor	a		; signal success
+	ret			; done
+
+	
+;
+; Handle options
+;
+option:
+;
+	inc	ix		; next char
+	ld	a,(ix)		; get it
+	cp	'?'		; is it a '?' as expected?
+	jp	z,usage		; yes, display usage
+	jp	errprm		; anything else is an error
+;
+; Display usage
+;
+usage:
+;
+	call	crlf		; formatting
+	ld	de,msgban	; point to version message part 1
+	call	prtstr		; print it
+	call	crlf2		; blank line
+	ld	de,msguse	; point to usage message
+	call	prtstr		; print it
+	or	$FF		; signal no action performed
+	ret			; and return
+;
+; Print character in A without destroying any registers
+;
+prtchr:
+	push	bc		; save registers
+	push	de
+	push	hl
+	ld	e,a		; character to print in E
+	ld	c,$02		; BDOS function to output a character
+	call	bdos		; do it
+	pop	hl		; restore registers
+	pop	de
+	pop	bc
+	ret
+;
+prtdot:
+;
+	; shortcut to print a dot preserving all regs
+	push	af		; save af
+	ld	a,'.'		; load dot char
+	call	prtchr		; print it
+	pop	af		; restore af
+	ret			; done
+;
+; Print a zero terminated string at (DE) without destroying any registers
+;
+prtstr:
+	push	de
+;
+prtstr1:
+	ld	a,(de)		; get next char
+	or	a
+	jr	z,prtstr2
+	call	prtchr
+	inc	de
+	jr	prtstr1
+;
+prtstr2:
+	pop	de		; restore registers
+	ret	
+;
+; Print the value in A in hex without destroying any registers
+;
+prthex:
+	push	af		; save AF
+	push	de		; save DE
+	call	hexascii	; convert value in A to hex chars in DE
+	ld	a,d		; get the high order hex char
+	call	prtchr		; print it
+	ld	a,e		; get the low order hex char
+	call	prtchr		; print it
+	pop	de		; restore DE
+	pop	af		; restore AF
+	ret			; done
+;
+; print the hex word value in bc
+;
+prthexword:
+	push	af
+	ld	a,b
+	call	prthex
+	ld	a,c
+	call	prthex 
+	pop	af
+	ret
+;
+; print the hex dword value in de:hl
+;
+prthex32:
+	push	bc
+	push	de
+	pop	bc
+	call	prthexword
+	push	hl
+	pop	bc
+	call	prthexword
+	pop	bc
+	ret
+;
+; Convert binary value in A to ascii hex characters in DE
+;
+hexascii:
+	ld	d,a		; save A in D
+	call	hexconv		; convert low nibble of A to hex
+	ld	e,a		; save it in E
+	ld	a,d		; get original value back
+	rlca			; rotate high order nibble to low bits
+	rlca
+	rlca
+	rlca
+	call	hexconv		; convert nibble
+	ld	d,a		; save it in D
+	ret			; done
+;
+; Convert low nibble of A to ascii hex
+;
+hexconv:
+	and	$0F	     	; low nibble only
+	add	a,$90
+	daa	
+	adc	a,$40
+	daa	
+	ret
+;
+; Print value of A or HL in decimal with leading zero suppression
+; Use prtdecb for A or prtdecw for HL
+;
+prtdecb:
+	push	hl
+	ld	h,0
+	ld	l,a
+	call	prtdecw		; print it
+	pop	hl
+	ret
+;
+prtdecw:
+	push	af
+	push	bc
+	push	de
+	push	hl
+	call	prtdec0
+	pop	hl
+	pop	de
+	pop	bc
+	pop	af
+	ret
+;
+prtdec0:
+	ld	e,'0'
+	ld	bc,-10000
+	call	prtdec1
+	ld	bc,-1000
+	call	prtdec1
+	ld	bc,-100
+	call	prtdec1
+	ld	c,-10
+	call	prtdec1
+	ld	e,0
+	ld	c,-1
+prtdec1:
+	ld	a,'0' - 1
+prtdec2:
+	inc	a
+	add	hl,bc
+	jr	c,prtdec2
+	sbc	hl,bc
+	cp	e
+	ret	z
+	ld	e,0
+	call	prtchr
+	ret
+;
+; Start a new line
+;
+crlf2:
+	call	crlf		; two of them
+crlf:
+	push	af		; preserve AF
+	ld	a,13		; <CR>
+	call	prtchr		; print it
+	ld	a,10		; <LF>
+	call	prtchr		; print it
+	pop	af		; restore AF
+	ret
+;
+; Get the next non-blank character from (HL).
+;
+nonblank:
+	ld	a,(ix)		; load next character
+	or	a		; string ends with a null
+	ret	z		; if null, return pointing to null
+	cp	' '		; check for blank
+	ret	nz		; return if not blank
+	inc	ix		; if blank, increment character pointer
+	jr	nonblank	; and loop
+;
+; Convert character in A to uppercase
+;
+ucase:
+	cp	'a'		; if below 'a'
+	ret	c		; ... do nothing and return
+	cp	'z' + 1		; if above 'z'
+	ret	nc		; ... do nothing and return
+	res	5,a		; clear bit 5 to make lower case -> upper case
+	ret			; and return
+;
+; Add the value in A to HL (HL := HL + A)
+;
+addhl:
+	add	a,l		; A := A + L
+	ld	l,a		; Put result back in L
+	ret	nc		; if no carry, we are done
+	inc	h		; if carry, increment H
+	ret			; and return
+;
+; Jump indirect to address in HL
+;
+jphl:
+	jp	(hl)
+;
+; Errors
+;
+erruse:	; command usage error (syntax)
+	ld	de,msguse
+	jr	err
+;
+errprm:	; command parameter error (syntax)
+	ld	de,msgprm
+	jr	err
+;
+errfil:	; STARTUP.CMD file not present
+	ld	de,msgfil
+	jr	err
+;
+err:	; print error string and return error signal
+	call	crlf		; print newline
+;
+err1:	; without the leading crlf
+	call	prtstr		; print error string
+;
+err2:	; without the string
+;	call	crlf		; print newline
+	or	$FF		; signal error
+	ret			; done
+;
+;===============================================================================
+; Storage Section
+;===============================================================================
+;
+fcb	.db	0		; Drive code, 0 = current drive
+	.db	"START   "	; File name, 8 chars
+	.db	"COM"		; File type, 3 chars
+	.fill	36-($-fcb),0	; zero fill remainder of fcb
+;
+cmdblk	.db	cmdlen		; length
+cmdtxt	.db	"        B:SUBMIT START"
+	.db	0		; null terminator
+cmdlen	.equ	$ - cmdtxt
+cmdend	.equ	$
+;
+stksav	.dw	0		; stack pointer saved at start
+	.fill	stksiz,0	; stack
+stack	.equ	$		; stack top
+;
+; Messages
+;
+msgban	.db	"STARTUP v1.0, 01-Dec-2017",13,10
+	.db	"Copyright (C) 2017, Wayne Warthen, GNU GPL v3",0
+msguse	.db	"Usage: STARTUP [/?]",0
+msgprm	.db	"Parameter error (STARTUP /? for usage)",0
+msgfil	.db	"STARTUP.CMD file missing",0
+;
+	.end

Source/Apps/Survey.asm

@@ -0,0 +1,725 @@
+;***************************************;
+;					;
+;		S U R V E Y		;
+;					;
+;***************************************;
+
+;By Michael Friese  9/22/79
+
+
+;*  Lists Kbytes used and remaining plus number of files
+;   on all logged disks (up to 8)
+;*  Prints Memory map and synopsis of all machine memory
+;*  Lists all active I/O Ports
+;*  Uses disk allocation block for all disk calculations
+;
+;VERSION LIST - Most recent version first.
+;
+;16/Dec/17 - Handle 16-bit port addressing using
+;            Z80 IN A,(C) instruction.     Wayne Warthen
+;
+;06/Jul/82 - Added Godbout DISK 1 equate and added SKIP equate
+;	    Bill Bolton - Software Tools, Australia
+;
+;01/Jun/82 - Tidied up and fixed port display, added display
+;	    of contents of low memory. David Bennett - Alfred
+;	    Hospital, Australia
+;
+;29/Jun/80 - Added version number test and calculations for CP/M
+;	    version 2 compatibility.   This program should now work
+;	    properly on all versions 1.4 and later.  BRR
+;
+;28/Jun/80 - Added IMS400 equate (prevents Industrial Micro Systems
+;	    controller from hanging up during port scan).  BRR
+;
+;24/Jun/80 - Removed MACLIB statement, included required macros
+;	    in source.     Bruce R. Ratoff
+;
+
+;*******************************;
+;	SYSTEM MACROS		;
+;*******************************;
+;Increments 16 bit memory location X
+INXI	MACRO	X
+	LOCAL	JUST8
+	PUSH	H
+	LXI	H,X
+	INR	M
+	JNZ	JUST8
+	INX	H
+	INR	M
+JUST8:
+	POP	H
+	ENDM
+;..............................................................
+;
+;	SAVE MACRO	SAVE SPECIFIED REGISTERS
+;
+;	SAVE	R1,R2,R3,R4
+;
+;		R1-R4 MAY BE B,D,H OR PSW  SAVED IN ORDER SPECIFIED
+;		IF REGS ARE OMITTED SAVE B,D AND H
+;
+SAVE	MACRO	R1,R2,R3,R4
+	IF NOT NUL R1&R2&R3&R4
+	IRP	R,<<R1>,<R2>,<R3>,<R4>>
+	IF	NUL R
+	EXITM
+	ENDIF
+	PUSH	R
+	ENDM
+	ELSE
+	IRPC	REG,BDH
+	PUSH	REG
+	ENDM
+	ENDIF
+	ENDM
+;
+;	. . . . . . . . . . . . . . . . . . . . . . . . . . . .
+;
+;	RESTORE MACRO	RESTORE REGISTERS  (INVERSE OF SAVE)
+;
+;	RESTORE	R1,R2,R3,R4
+;
+;		R1-R4 MAY BE B,D,H OR PSW  RESTORED IN ORDER SPECIFIED
+;		IF REGS OMITTED RESTORE H,D AND B
+;
+RESTORE	MACRO	R1,R2,R3,R4
+	IF	NOT NUL R1&R2&R3&R4
+	IRP	R,<<R1>,<R2>,<R3>,<R4>>
+	IF	NUL R
+	EXITM
+	ENDIF
+	POP	R
+	ENDM
+	ELSE
+	IRPC	REG,HDB
+	POP	REG
+	ENDM
+	ENDIF
+	ENDM
+;
+;..............................................................
+;
+;	CHAROUT MACRO	CONSOLE OUTPUT FROM A
+;
+;	CHAROUT	ADDR
+;
+CHAROUT	MACRO	ADDR
+	IF	NOT NUL ADDR
+	LDA	ADDR
+	ENDIF
+	MVI	C,2		;;CONOUT
+	MOV	E,A		;;CHAR TO E
+	CALL	5		;;CALL BDOS
+	ENDM
+;
+;
+;.............................................................
+;
+;	DECOUT MACRO	CONVERT A POSITIVE INTEGER TO DECIMAL AND OUTPUT 
+;			TO THE CONSOLE.
+;
+;	DECOUT	ADDR
+;
+;		IF ADDR OMITTED, NUMBER ASSUMED TO BE IN HL, ELSE LOADED TO HL
+;		LEADING ZEROS SUPRESSED. MAXIMUM NUMBER 65,767
+;
+DECOUT	MACRO	ADDR
+	LOCAL	ENDDEC,DX
+	JMP	ENDDEC
+@DECOUT:
+	SAVE			;;PUSH STACK
+	LXI	B,-10		;;RADIX FOR CONVERSION
+	LXI	D,-1		;;THIS BECOMES NO DIVIDED BY RADIX
+DX:
+	DAD	B		;;SUBTRACT 10
+	INX	D
+	JC	DX
+	LXI	B,10
+	DAD	B		;;ADD RADIX BACK IN ONCE
+	XCHG
+	MOV	A,H
+	ORA	L		;;TEST FOR ZERO
+	CNZ	@DECOUT		;;RECURSIVE CALL
+	MOV	A,E
+	ADI	'0'		;;CONVERT FROM BCD TO HEX
+	MOV	E,A		;;TO E FOR OUTPUT
+	CHAROUT			;;CONSOLE OUTPUT
+	RESTORE			;;POP STACK
+	RET
+ENDDEC:
+DECOUT	MACRO	?ADDR
+	IF	NOT NUL ?ADDR
+	LHLD	?ADDR
+	ENDIF
+	CALL	@DECOUT		;;CALL THE SUBROUTINE
+	ENDM
+	DECOUT	ADDR
+	ENDM
+;
+;
+;..............................................................
+;
+;	HEXOUT MACRO	CONVERT BINARY NO AND OUTPUT TO CONSOLE
+;
+;	HEXOUT	ADDR
+;
+;		NUMBER ASSUMED IN A IF NO ARGUMENT
+;
+HEXOUT	MACRO	ADDR
+	LOCAL	OUTCHR,HEXEND
+	JMP	HEXEND
+HEXPRN:
+	SAVE	PSW
+	RRC
+	RRC
+	RRC
+	RRC			;;SHIFT RIGHT 4
+	CALL	OUTCHR
+	RESTORE	PSW
+OUTCHR:
+	ANI	0FH		;;MASK 4 BITS
+	ADI	90H		;;ADD OFFSET
+	DAA			;;DEC ADJUST
+	ACI	40H		;;ADD OFFSET
+	DAA			;;DEC ADJUST
+	MOV	E,A		;;TO E FOR OUTPUT
+	MVI	C,2		;;CONOUT
+	JMP	5		;;CALL BDOS
+HEXEND:
+
+HEXOUT	MACRO	?ADDR
+	IF	NOT NUL ?ADDR
+	LDA	?ADDR
+	ENDIF
+	CALL	HEXPRN
+	ENDM
+	HEXOUT	ADDR
+	ENDM
+;
+;
+
+;*******************************;
+;	SYSTEM EQUATES		;
+;*******************************;
+TRUE	EQU	-1
+FALSE	EQU	NOT TRUE
+TARBEL	EQU	FALSE		; Tarbell FDC dmb 31-may-82
+IMS400	EQU	FALSE		; Industrial Micro Systems FDC
+GODBOUT	EQU	FALSE		; Godbout Disk 1 FDC
+GODBAS	EQU	0C0H		; Base of Godbout FDC
+TARBAS	EQU	0F8H		; Base of Tarbell
+SKIP	EQU	TARBEL OR IMS400 OR GODBOUT	; Will be true
+				; if any skip needed
+	IF	TARBEL
+SKIPORT	EQU	TARBAS+4	; Port # to skip if Tarbell FDC
+	ENDIF
+	IF	IMS400
+SKIPORT	EQU	08FH		; Port # to skip if IMS FDC
+	ENDIF
+	IF	GODBOUT
+SKIPORT	EQU	GODBAS+1	; Port # to skip if Disk 1 FDC
+	ENDIF
+BDOS	EQU	5		; jump to BDOS
+bios	equ	0		; jump to BIOS dmb 1-jun-82
+CRLF	EQU	0A0DH		; CR LF sequence
+CRLFE	EQU	8A0DH		; CR LF with EOL
+EOL	EQU	80H		; End of line
+TAB	EQU	'I'-40H 	; Tab character
+ESC	EQU	1BH		; Escape character
+TABS	EQU	9		; Tab columns
+
+;***********************;
+;	MAIN PROGRAM	;
+;***********************;
+;
+	ORG	100H
+;
+START:
+	LXI	H,0			; Save stack pointer
+	DAD	SP
+	SHLD	OLDSP
+	LXI	SP,FINIS+64
+	CALL	TYPE			; Type initial CRLF
+	DB	TAB,TAB,'*** System Survey (December 17) ***'
+	DW	CRLF,CRLFE
+
+;DISK SURVEY
+	LXI	H,8			; Init drive counter
+	MVI	C,24			; Get login vector
+	PUSH	H
+	CALL	BDOS
+	POP	H
+ROTBIT:
+	RAR				; RAR login bit to C
+	JNC	NOTLOG			; Drive not logged
+	PUSH	PSW			; Save login
+	PUSH	H			; and counter
+
+;Print drive letter
+	CALL	TYPE
+	DB	'Drive'
+	DB	' '+EOL
+	MVI	A,'A'			; Get ASCII bias
+	ADD	H			; Add to drive #
+	MOV	E,A			; Print drive letter
+	CALL	TCHR
+	CALL	TYPE			; and colon
+	DB	':',' '+EOL
+	POP	H			; Restore drive #
+	PUSH	H
+
+;Print K already allocated
+	MOV	E,H
+	MVI	C,14			; Log drive
+	CALL	BDOS
+	MVI	C,27			; Index allocation vect
+	CALL	BDOS
+	MOV	L,A			; Put in decent regs
+	MOV	H,B
+	PUSH	H			; save for later
+	MVI	C,12			; get version #
+	CALL	BDOS
+	MOV	A,L			; zero if version 1
+	ORA	A
+	JNZ	V2X			; otherwise, use 2.x style params
+	LHLD	BDOS+1			; get vers 1 style params
+	MVI	L,3CH
+	MOV	A,M			; get block shift factor
+	STA	BLKSHF
+	INX	H
+	INX	H
+	MOV	L,M			; get max. block number
+	MVI	H,0
+	SHLD	MAXALL
+	MVI	B,32			; assume 32 bytes in block map
+	JMP	GETALC			; continue
+V2X:
+	MVI	A,'?'			; Use wild user #
+	STA	FCB			; in filename search
+	MVI	C,31			; Get 2.x parameter block
+	CALL	BDOS
+	INX	H
+	INX	H
+	MOV	A,M			; Get and save ablock shift factor
+	STA	BLKSHF
+	INX	H
+	INX	H
+	INX	H
+	MOV	A,M			; Get maximum block number
+	INX	H			; (double precision)
+	MOV	H,M
+	MOV	L,A
+	SHLD	MAXALL
+	INX	H
+	MVI	B,3			; map size is (MAXALL+1)/8
+V2SH:
+	MOV	A,H
+	ORA	A			; do 16 bit right shift
+	RAR
+	MOV	H,A
+	MOV	A,L
+	RAR
+	MOV	L,A
+	DCR	B			; 3 times
+	JNZ	V2SH
+	MOV	B,L
+	LDA	MAXALL			; allow for leftover bits if any
+	ANI	3
+	JZ	GETALC
+	INR	B
+GETALC:
+	POP	H
+	LXI	D,0			; Init group counter
+NXBYTE:
+	MVI	C,8			; Bit counter for byte
+	MOV	A,M			; Get map byte
+NXBIT:
+	RAR				; Rotate to C
+	JNC	NOBIT			; No group allocated
+	INX	D			; Inc group counter
+NOBIT:
+	DCR	C			; Dec bit counter
+	JNZ	NXBIT
+	INX	H			; Index next byte
+	DCR	B
+	JNZ	NXBYTE
+	CALL	SHF16
+	PUSH	H
+	CALL	BINDEC
+	CALL	TYPE
+	DB	'K bytes in',' '+EOL
+
+;Print number of files
+	LXI	D,FCB			; Fake file cont block
+	MVI	C,17			; Search for 1st file
+	CALL	BDOS
+	LXI	H,0			; File counter
+LOOK:
+	CPI	255			; Failure
+	JZ	PFILE
+	ADD	A			; File offset times 2
+	ADD	A			; 4
+	ADD	A			; 8
+	ADD	A			; 16
+	ADD	A			; 32
+	ADI	80H			; Make sure it's not a deleted file
+	MOV	E,A
+	MVI	D,0
+	LDAX	D
+	CPI	0E5H
+	JZ	LOOK1
+	INX	H			; Bump file counter
+LOOK1:
+	LXI	D,FCB			; Restore FCB
+	MVI	C,18			; Look for addtl files
+	PUSH	H			; Save file counter
+	CALL	BDOS
+	POP	H
+	JMP	LOOK
+PFILE:
+	CALL	BINDEC			; Print # of files
+	CALL	TYPE
+	DB	' files with',' '+EOL
+
+;Print K remaining
+	LHLD	MAXALL			; Get number of blocks
+	XCHG
+	INX	D			; Inc for actual value
+	CALL	SHF16
+	XCHG
+	POP	H
+	MOV	A,H			; Ones comp & move
+	CMA
+	MOV	H,A
+	MOV	A,L
+	CMA
+	MOV	L,A
+	INX	H			; Twos complement
+	DAD	D			; and subtract
+	CALL	BINDEC			; K remaining
+	CALL	TYPE
+	DB	'K bytes remaining'
+	DW	CRLFE
+
+;Set up to print next drive
+	POP	H			; Restore bit counter
+	POP	PSW			; and bitmap byte
+NOTLOG:
+	INR	H			; Bump drive counter
+	DCR	L			; Dec bit counter
+	JNZ	ROTBIT
+
+;MEMORY SURVEY
+;Create header
+MSURV:
+	CALL	TYPE
+	DW	CRLF
+	DB	'Memory map:'
+	DW	CRLF
+	DB	'0',TAB,'8',TAB,'16',TAB,'24',TAB,'32'
+	DB	TAB,'40',TAB,'48',TAB,'56',TAB,'64'
+	DW	CRLF
+	REPT	8
+	DB	'|',TAB
+	ENDM
+	DB	'|'
+	DW	CRLF
+	db	' '			; dmb 31-May-82
+	DB	'T'+EOL
+	LXI	H,RAM
+	MVI	M,LOW 1023		; Init RAM counter
+	INX	H
+	MVI	M,HIGH 1023
+	MVI	B,4			; Clear ROM, EMP
+CLREG:
+	INX	H
+	MVI	M,0
+	DCR	B
+	JNZ	CLREG
+	LXI	H,1024			; Init memory pointer
+	MVI	C,63			; K to be checked
+
+;Start of analysis loop
+BEGANA:
+	LXI	D,1024			; Byte counter
+	XRA	A			; Clear flag bytes
+	STA	RAMF
+	STA	EMPF
+ANALP:
+	MOV	A,M			; Get test byte and
+	MOV	B,A			; store for later
+	CMA
+	MOV	M,A			; Put invertd tst byte
+	SUB	M			; Check for good write
+	MOV	M,B			; Restore orignl data
+	JNZ	NOTMEM			; Wasn't good write
+	INXI	RAM			; Bump memory counter
+	JMP	NEXT			; To next byte
+
+NOTMEM:
+	STA	RAMF			; Not considered RAM
+	MVI	A,0FFH			; Is it empty space?
+	SUB	B
+	JNZ	NOTEMP			; Inc ROM, set flag
+	LDA	EMPF			; Any non empty space
+	ANA	A			; before here?
+	JZ	NEXT
+	JMP	NOTEM			; To next byte
+NOTEMP:
+	STA	EMPF			; Set no empty flag
+NOTEM:
+	INXI	ROM
+NEXT:
+	INX	H			; Index next byte
+	DCX	D			; Decrement K counter
+	XRA	A
+	ORA	D
+	ORA	E
+	JNZ	ANALP			; K counter not 0
+	PUSH	B
+	PUSH	H
+	LDA	RAMF			; Is it RAM?
+	ANA	A
+	JNZ	NOTRAM			; No
+	dcr	h			; drop H to make compares right
+	LDA	BDOS+2			; Is it under BDOS ?
+	CMP	H
+	JC	NOTTPA			; No
+	CALL	TYPE			; Yes, it's TPA
+	DB	'T'+EOL
+	JMP	NEXTK
+NOTTPA:
+	lda	bios+2			; is it under bios ?
+	cmp	h
+	jc	nbdos
+	call	type			; yes, it's BDOS
+	db	'C'+eol
+	jmp	nextk
+nbdos:
+	CALL	TYPE			; Assume it's BIOS
+	DB	'B'+EOL
+	JMP	NEXTK
+;
+NOTRAM:
+	LDA	EMPF			; Is it empty?
+	ANA	A
+	JZ	NOMEM			; Yes, no memory
+	CALL	TYPE			; No, must be ROM
+	DB	'R'+EOL
+	JMP	NEXTK
+NOMEM:
+	CALL	TYPE
+	DB	' '+EOL
+NEXTK:
+	POP	H
+	POP	B
+	DCR	C			; Decrement K counter
+	JNZ	BEGANA
+	CALL	TYPE
+	DW	CRLF
+	DB	'T=TPA',TAB,'C=CPM',TAB,'B=BIOS or unassigned'
+	DB	TAB,'R=ROM or bad'
+	DW	CRLFE
+;
+; contents of first page
+	call	type
+	db	'BIOS at',' '+eol
+	hexout	bios+2
+	hexout	bios+1
+	call	type
+	db	tab,'iobyte',' '+eol
+	hexout	bios+3
+	call	type
+	db	tab,'drive',' '+eol
+	hexout	bios+4
+	call	type
+	db	tab,'BDOS at',' '+eol
+	hexout	bdos+2
+	hexout	bdos+1
+	call	type
+	dw	crlf,crlfe
+;
+;MEMORY SYNOPSIS
+	LHLD	RAM
+	PUSH	H			; Save RAM
+	CALL	BINDEC			; Type RAM
+	CALL	TYPE
+	DB	' Bytes RAM',TAB,TAB+EOL
+	LHLD	ROM
+	PUSH	H
+	CALL	BINDEC			; Type ROM
+	CALL	TYPE
+	DB	' Bytes ROM',TAB,TAB+EOL
+	LHLD	BDOS+1
+	CALL	BINDEC
+	CALL	TYPE
+	DB	' Bytes in TPA'
+	DW	CRLFE
+	POP	D			; Get RAM
+	POP	H			; Get RAM
+	DAD	D			; Add 'em
+	PUSH	H			; and save result
+	LXI	D,0			; Subtract from this
+	MOV	A,H			; Complement 16 bits
+	CMA
+	MOV	H,A
+	MOV	A,L
+	CMA
+	MOV	L,A			; 2s comp bias in D
+	DAD	D			; Subtract
+	CALL	BINDEC
+	CALL	TYPE
+	DB	' Bytes Empty   ',TAB+EOL
+	POP	H			; Restore RAM+ROM
+	CALL	BINDEC
+	CALL	TYPE
+	DB	' Total Active Bytes'
+	DW	CRLF,CRLF
+
+;PORT SURVEY
+	DB	'Active I/O ports',':'+EOL
+	LXI	H,1000H			; DELAY SO MESSAGE OUTPUT
+PDLY:
+	DCX	H			; DOESN'T GIVE A FALSE READING
+	MOV	A,H			; ON CONSOLE STATUS PORT
+	ORA	L
+	JNZ	PDLY
+	LXI	H,0			; Init active port counter
+	mvi	d,0			; Init port counter
+	mvi	e,0ffh			; init port group variable
+PORTLP:
+	MOV	A,D
+
+	IF	SKIP			; Single port mask
+	CPI	SKIPORT
+	JZ	ISPORT			; Print mask port
+	ENDIF
+
+	mov	c,a			; port number to reg c
+	mvi	b,0			; for 16 bit  port addressing
+	db	0edh,078h		; z80: in a,(c)
+; inactive port could return 0xFF or 0x78
+	CPI	0FFH
+	JZ	NEXTPT
+	cpi	078h
+	jz	nextpt
+ISPORT:
+	mov	a,d			; got a live one, probably
+	ani	0f0h			; is port in same group as last ?
+	cmp	e
+	jz	nocrlf
+	call	type			; no, start a new line
+	dw	crlfe
+	mov	a,d			; save for next time
+	ani	0f0h
+	mov	e,a
+nocrlf:
+	MOV	A,D			; Get port #
+	PUSH	D
+	PUSH	H
+	HEXOUT
+	POP	H
+	POP	D
+	INX	H			; count another one found
+	call	type
+	db	' '+eol
+NEXTPT:
+	INR	D			; Bump port counter
+	JNZ	PORTLP			; Not done
+	CALL	TYPE			; Done
+	DW	CRLFE
+	CALL	BINDEC
+	CALL	TYPE			; Type Active Ports
+	DB	' Ports active'
+	DW	CRLFE
+ CCP:
+	LHLD	OLDSP
+	SPHL
+	RET
+
+
+;***********************;
+;	SUBROUTINES	;
+;***********************;
+
+;Binary to decimal conversion
+BINDEC:
+	DECOUT				; From LIB
+	RET
+
+;Types a string of text terminated with bit 7 high
+TYPE:
+	XTHL				; Get string address
+	PUSH	D
+TYPELP:
+	MOV	A,M			; Get type data
+	MOV	D,A			; Save for later
+	ANI	7FH			; Mask ASCII
+	MOV	E,A
+	PUSH	H
+	PUSH	D
+	CALL	TCHR
+	POP	D
+	POP	H
+	INX	H
+	MVI	A,EOL			; End of line bit
+	ANA	D
+	JP	TYPELP			; Not done
+	POP	D
+	XTHL				; Get return address
+	RET
+
+;Types a single character on console
+TCHR:
+	MVI	C,2
+	JMP	BDOS
+
+;Checks sectors per block and multiplies or divides block size
+;Enter with data in D. Result returned in H,L
+;
+SHF16:
+	LDA	BLKSHF			; Get shift factor (gives block size)
+	CPI	3			; Is it 1K (std)?
+	JNZ	NOT3
+	MOV	L,E			; Yes, use present #
+ZH:
+	MVI	H,0
+	RET
+;
+NOT3:
+	CPI	2			; Is it minifloppy?
+	JNZ	NOT2
+	MOV	A,E			; Yes, divide by 2
+	RRC
+	ANI	7FH
+	MOV	L,A
+	JMP	ZH
+NOT2:
+	SUI	3			; Must be something
+	MOV	B,A			; larger like double
+	XCHG				; sided or double dens
+BITSHF:
+	DAD	H			; 16 bit 2^(B-1)
+	DCR	B
+	JNZ	BITSHF
+	RET
+
+
+;***********************;
+;	DATA STORAGE	;
+;***********************;
+
+FCB:	DB	0,'???????????',0,0,0	; File control block
+	DS	17			; Extra FCB workspace
+OLDSP:	DS	2			; Old stack pointer
+RAM:	DS	2			; RAM counter
+ROM:	DS	2			; ROM counter
+RAMF:	DS	1			; RAM good flag
+EMPF:	DS	1			; Empty so far flag
+BLKSHF:	DS	1			; block shift factor
+MAXALL:	DS	2			; maximum block number
+FINIS	EQU	$			; End of program
+	END
+

Source/Apps/SysCopy.asm

@@ -1,6 +1,6 @@
 ;===============================================================================
 ; SysCopy - Copy System Image to/from reserved tracks of disk for RomWBW
-;           adaptation of CP/M 2.2
+;           adaptation of CP/M 2.2 & CP/M 3
 ;===============================================================================
 ;
 ;	Author:  Wayne Warthen (wwarthen@gmail.com)
@@ -16,6 +16,7 @@
 ;
 ; Change Log:
 ;   2016-04-24 [WBW] Updated to preserve MBR partition table
+;   2020-02-17 [WBW] Updated for CP/M 3
 ;_______________________________________________________________________________
 ;
 ; ToDo:
@@ -27,6 +28,9 @@
 ; Definitions
 ;===============================================================================
 ;
+false	.equ	0		; define true
+true	.equ	~false		; define false
+;
 stksiz	.equ	$40		; we are a stack pig
 ;
 restart	.equ	$0000		; CP/M restart vector
@@ -86,6 +90,18 @@ main:
 init:
 	; add check for RomWBW?
 	;
+	; get OS version
+	ld	c,12		; BDOS get os version
+	call	bdos		; do it, L=version
+	cp	$30		; Test for v3.0
+	jr	c,init1		; if <, pre v3.0
+	ld	a,true		; OS v3.0 or above
+	ld	(v3os),a	; save it
+	jr	init2
+init1:
+	ld	a,false		; OS < v3.0
+	ld	(v3os),a	; save it
+init2:
 	; locate cbios function table address
 	ld	hl,(restart+1)	; load address of CP/M restart vector
 	ld	de,-3		; adjustment for start of table
@@ -96,6 +112,20 @@ init:
 	call	bdos		; invoke BDOS function
 	inc	a		; 1-based index for fcb
 	ld	(defdrv),a	; save it
+	; print version banner
+	call	crlf		; formatting
+	ld	de,msgban1	; point to version message part 1
+	call	prtstr		; print it
+	ld	a,(v3os)	; get OS version flag
+	or	a		; set flags
+	ld	de,msgv2	; point to V2 mode message
+	call	z,prtstr	; if V2, say so
+	ld	de,msgv3	; point to V3 mode message
+	call	nz,prtstr	; if V3, say so
+	call	crlf		; formatting
+	ld	de,msgban2	; point to version message part 2
+	call	prtstr		; print it
+	call	crlf		; formatting
 	; return success
 	xor	a
 	ret
@@ -237,7 +267,7 @@ wrfil1:	; create target file
 	; write the image
 	ld	a,$15		; setup for bdos write sequential
 	ld	(rwfun),a	; save bdos function
-	ld	a,(imgsiz)	; number of records to read
+	ld	a,(imgsiz)	; number of records to write
 	ld	(reccnt),a	; init record counter
 	ld	hl,imgbuf	; start of buffer
 	ld	(bufptr),hl	; init buffer pointer
@@ -292,10 +322,8 @@ rddsk:
 	call	setdsk		; setup disk
 	ret	nz		; abort on error
 	; set function to read
-	ld	hl,(cbftbl)	; get address of CBIOS function table
-	ld	a,$27		; $27 is CBIOS READ entry offset
-	call	addhl		; set HL to resultant entry point
-	ld	(actfnc),hl	; save it
+	ld	a,13		; CBIOS func 13: Read
+	ld	(actfnc),a	; save it
 	; read the header
 	ld	a,12		; start with 1536 byte header (12 records)
 	ld	(reccnt),a	; initialize record counter
@@ -339,11 +367,10 @@ wrdsk:
 	ld	hl,mbrbuf	; override to read
 	ld	(bufptr),hl	; ... into MBR buffer
 	ld	a,4		; 4 records = 1 512 byte sector
+	ld	(reccnt),a	; initialize record counter
 	; set function to read
-	ld	hl,(cbftbl)	; get address of CBIOS function table
-	ld	a,$27		; $27 is CBIOS READ entry offset
-	call	addhl		; set HL to resultant entry point
-	ld	(actfnc),hl	; save it
+	ld	a,13		; CBIOS func 13: Read
+	ld	(actfnc),a	; save it
 	; read the existing MBR into memory
 	call	rwdsk		; read the sector
 	ret	nz		; abort on error
@@ -366,10 +393,8 @@ wrdsk1:	; setup to write the image from memory to disk
 	call	setdsk		; setup disk
 	ret	nz		; abort on error
 	; set function to write
-	ld	hl,(cbftbl)	; get address of CBIOS function table
-	ld	a,$2A		; $2A is CBIOS WRITE entry offset
-	call	addhl		; set HL to resultant entry point
-	ld	(actfnc),hl	; save it
+	ld	a,14		; CBIOS func 14: Write
+	ld	(actfnc),a	; save it
 	; setup the record count to write
 	ld	a,(imgsiz)	; get previously recorded image size
 	ld	(reccnt),a	; save it as pending record count
@@ -399,7 +424,8 @@ setdsk:
 	ld	c,a		; move to c
 	ld	e,0		; treat as first select
 	call	cbios		; invoke cbios with...
-	.db	$1B		; SELDSK entry offset
+	;.db	$1B		; SELDSK entry offset
+	.db	9		; SELDSK entry offset
 	; check return (sets HL to DPH address)
 	ld	a,h
 	or	l
@@ -436,29 +462,47 @@ setdsk:
 ; Read or write (reccnt) sectors to/from disk via CBIOS
 ;
 rwdsk:
+	ld	hl,128		; assume rec len for < CP/M 3
+	ld	(reclen),hl	; and save it
+	ld	a,(v3os)	; CP/M 3 or greater?
+	or	a		; set flags
+	jr	z,rwdsk0	; if not, continue
+	; adjust reccnt, logical (128) to physical (512)
+	ld	a,(reccnt)	; get pending rec cnt
+	add	a,3		; round up
+	srl	a		; shift to
+	srl	a		; ... divide by 4
+	ld	(reccnt),a	; and resave it
+	ld	hl,512		; use physical rec len
+	ld	(reclen),hl	; and save it
+rwdsk0:
 	; setup to read/write a sector
 	ld	bc,(acttrk)	; get active track
 	call	cbios		; invoke cbios with...
-	.db	$1E		; SETTRK entry offset
+	;.db	$1E		; SETTRK entry offset
+	.db	10		; SETTRK entry offset
 	ld	bc,(actsec)	; get active sector
 	call	cbios		; invoke cbios with...
-	.db	$21		; SETSEC entry offset
+	;.db	$21		; SETSEC entry offset
+	.db	11		; SETSEC entry offset
 	ld	bc,(bufptr)	; get active buffer pointer
 	call	cbios		; invoke cbios with...
-	.db	$24		; SETDMA entry offset
+	;.db	$24		; SETDMA entry offset
+	.db	12		; SETDMA entry offset
 	; read/write sector
 	ld	a,(reccnt)	; get the pending record count
 	dec	a		; last record?
 	ld	c,2		; allow cached writes by default
 	jr	nz,rwdsk1	; not last record, continue
 	ld	c,1		; last record, no caching please
-rwdsk1:	ld	hl,(actfnc)	; load the CBIOS function vector
-	call	jphl		; indirect call (read or write)
+rwdsk1:	
+	ld	a,(actfnc)
+	call	cbiosfn
 	or	a		; set flags on return code
 	jp	nz,errio	; if not zero, error abort
 	; adjust buffer pointer
 	ld	hl,(bufptr)	; get buffer pointer
-	ld	de,128		; record length is 128 bytes
+	ld	de,(reclen)	; get rec len
 	add	hl,de		; adjust buffer ptr for next record
 	ld	(bufptr),hl	; save it
 	; next sector
@@ -479,7 +523,7 @@ rwdsk1:	ld	hl,(actfnc)	; load the CBIOS function vector
 rwdsk2:	ld	hl,reccnt
 	dec	(hl)		; decrement pending record count
 	ret	z		; if zero, done, return with Z set
-	jr	rwdsk		; otherwise, loop
+	jr	rwdsk0		; otherwise, loop
 ;
 jphl:	jp	(hl)		; indirect jump
 ;
@@ -656,6 +700,15 @@ chkfcb4:
 	or	a		; set flags
 	ret
 ;
+; Print dot
+;
+prtdot:
+	push	af
+	ld	a,'.'
+	call	prtchr
+	pop	af
+	ret
+;
 ; Print character in A without destroying any registers
 ;
 prtchr:
@@ -775,13 +828,37 @@ delim1:
 ;
 cbios:
 	ex	(sp),hl
-	ld	a,(hl)		; get the function offset
+	ld	a,(hl)		; get the function number
 	inc	hl		; point past value following call instruction
 	ex	(sp),hl		; put address back at top of stack and recover HL
+	
+cbiosfn:
+	; enter here if function already in reg A
+	ld	(bpb_fn),a	; save function
+;	
+	ld	a,(v3os)	; CP/M 3 or greater?
+	or	a		; set flags
+	jr	nz,cbios2	; if >= V3, handle it
+;
+	; CBIOS call for CP/M < v3
+	ld	a,(bpb_fn)	; get pending function number
+	ld	l,a		; function number to L
+	add	a,l		; ... and multiply by 3 for
+	add	a,l		; ... jump table offset
 	ld	hl,(cbftbl)	; address of CBIOS function table to HL
 	call	addhl		; determine specific function address
 	jp	(hl)		; invoke CBIOS
 ;
+cbios2:
+	; CBIOS call for CP/M v3 or greater
+	ld	(bpb_bc),bc
+	ld	(bpb_de),de
+	ld	(bpb_hl),hl
+	
+	ld	c,50		; direct bios call function number
+	ld	de,bpb		; BIOS parameter block
+	jp	bdos		; return via BDOS call
+;
 ; Add the value in A to HL (HL := HL + A)
 ;
 addhl:
@@ -862,10 +939,24 @@ actdsk	.db	0		; active disk no
 acttrk	.dw	0		; active track
 actsec	.dw	0		; active sector
 actspt	.dw	0		; active sectors per track
-actfnc	.dw	0		; active function (read or write)
+actfnc	.db	0		; active cbios i/o function (read or write)
+v3os	.db	0		; true ($FF) if OS v3.0 or greater
+reclen	.dw	0		; active record length
+;
+bpb:				; BIOS parameter block for CP/M 3 BIOS calls
+bpb_fn	.db	0		; function
+bpb_a	.db	0		; reg A
+bpb_bc	.dw	0		; reg BC
+bpb_de	.dw	0		; reg DE
+bpb_hl	.dw	0		; reg HL
 ;
 ; Messages
 ;
+msgban1	.db	"SYSCOPY v2.0 for RomWBW CP/M, 17-Feb-2020$"
+msgv2	.db	" (CP/M 2 Mode)$"
+msgv3	.db	" (CP/M 3 Mode)$"
+msgban2	.db	"Copyright 2020, Wayne Warthen, GNU GPL v3$"
+
 msguse	.db	"Usage: SYSCOPY <dest>[=<source>]$"
 msgamb	.db	"Ambiguous file specification not allowed$"
 msgdlm	.db	"Invalid delimiter$"

Source/Apps/Timer.asm

@@ -0,0 +1,495 @@
+;===============================================================================
+; TIMER - Display system timer value
+;
+;===============================================================================
+;
+;	Author:  Wayne Warthen (wwarthen@gmail.com)
+;_______________________________________________________________________________
+;
+; Usage:
+;   TIMER [/C] [/?]
+;     ex: TIMER		(display current timer value)
+;         TIMER /?	(display version and usage)
+;         TIMER /C	(display timer value continuously)
+;
+; Operation:
+;   Reads and displays system timer value.
+;_______________________________________________________________________________
+;
+; Change Log:
+;   2018-01-14 [WBW] Initial release
+;   2018-01-17 [WBW] Add HBIOS check
+;   2019-11-08 [WBW] Add seconds support
+;_______________________________________________________________________________
+;
+; ToDo:
+;_______________________________________________________________________________
+;
+;===============================================================================
+; Definitions
+;===============================================================================
+;
+stksiz	.equ	$40		; Working stack size
+;
+restart	.equ	$0000		; CP/M restart vector
+bdos	.equ	$0005		; BDOS invocation vector
+;
+ident	.equ	$FFFE		; loc of RomWBW HBIOS ident ptr
+;
+rmj	.equ	3		; intended CBIOS version - major
+rmn	.equ	0		; intended CBIOS version - minor
+;
+bf_sysver	.equ	$F1	; BIOS: VER function
+bf_sysget	.equ	$F8	; HBIOS: SYSGET function
+bf_sysgettimer	.equ	$D0	; TIMER subfunction
+bf_sysgetsecs	.equ	$D1	; SECONDS subfunction
+;
+;===============================================================================
+; Code Section
+;===============================================================================
+;
+	.org	$100
+;
+	; setup stack (save old value)
+	ld	(stksav),sp	; save stack
+	ld	sp,stack	; set new stack
+;
+	; initialization
+	call	init		; initialize
+	jr	nz,exit		; abort if init fails
+;
+	; process
+	call 	process		; do main processing
+	jr	nz,exit		; abort on error
+;
+exit:	; clean up and return to command processor
+	call	crlf		; formatting
+	ld	sp,(stksav)	; restore stack
+	;jp	restart		; return to CP/M via restart
+	ret			; return to CP/M w/o restart
+;
+; Initialization
+;
+init:
+	call	crlf		; formatting
+	ld	de,msgban	; point to version message part 1
+	call	prtstr		; print it
+;
+	call	idbio		; identify active BIOS
+	cp	1		; check for HBIOS
+	jp	nz,errbio	; handle BIOS error
+;
+	ld	a,rmj << 4 | rmn	; expected HBIOS ver
+	cp	d		; compare with result above
+	jp	nz,errbio	; handle BIOS error
+;
+initx
+	; initialization complete
+	xor	a		; signal success
+	ret			; return
+;
+; Process
+;
+process:
+	; look for start of parms
+	ld	hl,$81		; point to start of parm area (past len byte)
+;
+process00:
+	call	nonblank	; skip to next non-blank char
+	jp	z,process0	; no more parms, go to display
+;
+	; check for option, introduced by a "/"
+	cp	'/'		; start of options?
+	jp	nz,usage	; yes, handle option
+	call	option		; do option processing
+	ret	nz		; done if non-zero return
+	jr	process00	; continue looking for options
+;
+process0:
+	call	crlf2		; formatting
+;
+process1:
+	ld	b,bf_sysget	; HBIOS SYSGET function
+	ld	c,bf_sysgettimer	; TIMER subfunction
+	rst	08		; call HBIOS, DE:HL := timer value
+	
+	ld	a,(first)
+	or	a
+	ld	a,0
+	ld	(first),a
+	jr	nz,process1a
+	
+	; test for new value
+	ld	a,(last)	; last LSB value to A
+	cp	l		; compare to current LSB
+	jr	z,process2	; if equal, bypass display
+
+process1a:	
+	; save and print new value
+	ld	a,l		; new LSB value to A
+	ld	(last),a	; save as last value
+	call	prtcr		; back to start of line
+	;call	nz,prthex32	; display it
+	call	prthex32	; display it
+	ld	de,strtick	; tag
+	call	prtstr		; display it
+
+	; get and print seconds value
+	ld	b,bf_sysget	; HBIOS SYSGET function
+	ld	c,bf_sysgetsecs	; SECONDS subfunction
+	rst	08		; call HBIOS, DE:HL := seconds value
+	call	prthex32	; display it
+	ld	a,'.'		; fraction separator
+	call	prtchr		; print it
+	ld	a,c		; get fractional component
+	call	prthex		; print it
+	ld	de,strsec	; tag
+	call	prtstr		; display it
+;
+process2:
+	ld	a,(cont)	; continuous display?
+	or	a		; test for true/false
+	jr	z,process3	; if false, get out
+;
+	ld	c,6		; BDOS: direct console I/O
+	ld	e,$FF		; input char
+	call	bdos		; call BDOS, A := char
+	or	a		; test for zero
+	jr	z,process1	; loop until char pressed
+;
+process3:
+	xor	a		; signal success
+	ret
+;
+; Handle special options
+;
+option:
+;
+	inc	hl		; next char
+	ld	a,(hl)		; get it
+	or	a		; zero terminator?
+	ret	z		; done if so
+	cp	' '		; blank?
+	ret	z		; done if so
+	cp	'?'		; is it a '?'?
+	jp	z,usage		; yes, display usage
+	cp	'C'		; is it a 'C', continuous?
+	jp	z,setcont	; yes, set continuous display
+	jp	errprm		; anything else is an error
+;
+usage:
+;
+	jp	erruse		; display usage and get out
+;
+setcont:
+;
+	or	$FF		; set A to true
+	ld	(cont),a	; and set continuous flag
+	jr	option		; check for more option letters
+;
+; Identify active BIOS.  RomWBW HBIOS=1, UNA UBIOS=2, else 0
+;
+idbio:
+;
+	; Check for UNA (UBIOS)
+	ld	a,($FFFD)	; fixed location of UNA API vector
+	cp	$C3		; jp instruction?
+	jr	nz,idbio1	; if not, not UNA
+	ld	hl,($FFFE)	; get jp address
+	ld	a,(hl)		; get byte at target address
+	cp	$FD		; first byte of UNA push ix instruction
+	jr	nz,idbio1	; if not, not UNA
+	inc	hl		; point to next byte
+	ld	a,(hl)		; get next byte
+	cp	$E5		; second byte of UNA push ix instruction
+	jr	nz,idbio1	; if not, not UNA, check others
+;
+	ld	bc,$04FA	; UNA: get BIOS date and version
+	rst	08		; DE := ver, HL := date
+;
+	ld	a,2		; UNA BIOS id = 2
+	ret			; and done
+;
+idbio1:
+	; Check for RomWBW (HBIOS)
+	ld	hl,($FFFE)	; HL := HBIOS ident location
+	ld	a,'W'		; First byte of ident
+	cp	(hl)		; Compare
+	jr	nz,idbio2	; Not HBIOS
+	inc	hl		; Next byte of ident
+	ld	a,~'W'		; Second byte of ident
+	cp	(hl)		; Compare
+	jr	nz,idbio2	; Not HBIOS
+;
+	ld	b,bf_sysver	; HBIOS: VER function
+	ld	c,0		; required reserved value
+	rst	08		; DE := version, L := platform id
+;	
+	ld	a,1		; HBIOS BIOS id = 1
+	ret			; and done
+;
+idbio2:
+	; No idea what this is
+	xor	a		; Setup return value of 0
+	ret			; and done
+;
+; Print character in A without destroying any registers
+;
+prtchr:
+	push	bc		; save registers
+	push	de
+	push	hl
+	ld	e,a		; character to print in E
+	ld	c,$02		; BDOS function to output a character
+	call	bdos		; do it
+	pop	hl		; restore registers
+	pop	de
+	pop	bc
+	ret
+;
+prtdot:
+;
+	; shortcut to print a dot preserving all regs
+	push	af		; save af
+	ld	a,'.'		; load dot char
+	call	prtchr		; print it
+	pop	af		; restore af
+	ret			; done
+;
+prtcr:
+;
+	; shortcut to print a dot preserving all regs
+	push	af		; save af
+	ld	a,13		; load CR value
+	call	prtchr		; print it
+	pop	af		; restore af
+	ret			; done
+;
+; Print a zero terminated string at (DE) without destroying any registers
+;
+prtstr:
+	push	de
+;
+prtstr1:
+	ld	a,(de)		; get next char
+	or	a
+	jr	z,prtstr2
+	call	prtchr
+	inc	de
+	jr	prtstr1
+;
+prtstr2:
+	pop	de		; restore registers
+	ret	
+;
+; Print the value in A in hex without destroying any registers
+;
+prthex:
+	push	af		; save AF
+	push	de		; save DE
+	call	hexascii	; convert value in A to hex chars in DE
+	ld	a,d		; get the high order hex char
+	call	prtchr		; print it
+	ld	a,e		; get the low order hex char
+	call	prtchr		; print it
+	pop	de		; restore DE
+	pop	af		; restore AF
+	ret			; done
+;
+; print the hex word value in bc
+;
+prthexword:
+	push	af
+	ld	a,b
+	call	prthex
+	ld	a,c
+	call	prthex 
+	pop	af
+	ret
+;
+; print the hex dword value in de:hl
+;
+prthex32:
+	push	bc
+	push	de
+	pop	bc
+	call	prthexword
+	push	hl
+	pop	bc
+	call	prthexword
+	pop	bc
+	ret
+;
+; Convert binary value in A to ascii hex characters in DE
+;
+hexascii:
+	ld	d,a		; save A in D
+	call	hexconv		; convert low nibble of A to hex
+	ld	e,a		; save it in E
+	ld	a,d		; get original value back
+	rlca			; rotate high order nibble to low bits
+	rlca
+	rlca
+	rlca
+	call	hexconv		; convert nibble
+	ld	d,a		; save it in D
+	ret			; done
+;
+; Convert low nibble of A to ascii hex
+;
+hexconv:
+	and	$0F	     	; low nibble only
+	add	a,$90
+	daa	
+	adc	a,$40
+	daa	
+	ret
+;
+; Print value of A or HL in decimal with leading zero suppression
+; Use prtdecb for A or prtdecw for HL
+;
+prtdecb:
+	push	hl
+	ld	h,0
+	ld	l,a
+	call	prtdecw		; print it
+	pop	hl
+	ret
+;
+prtdecw:
+	push	af
+	push	bc
+	push	de
+	push	hl
+	call	prtdec0
+	pop	hl
+	pop	de
+	pop	bc
+	pop	af
+	ret
+;
+prtdec0:
+	ld	e,'0'
+	ld	bc,-10000
+	call	prtdec1
+	ld	bc,-1000
+	call	prtdec1
+	ld	bc,-100
+	call	prtdec1
+	ld	c,-10
+	call	prtdec1
+	ld	e,0
+	ld	c,-1
+prtdec1:
+	ld	a,'0' - 1
+prtdec2:
+	inc	a
+	add	hl,bc
+	jr	c,prtdec2
+	sbc	hl,bc
+	cp	e
+	ret	z
+	ld	e,0
+	call	prtchr
+	ret
+;
+; Start a new line
+;
+crlf2:
+	call	crlf		; two of them
+crlf:
+	push	af		; preserve AF
+	ld	a,13		; <CR>
+	call	prtchr		; print it
+	ld	a,10		; <LF>
+	call	prtchr		; print it
+	pop	af		; restore AF
+	ret
+;
+; Get the next non-blank character from (HL).
+;
+nonblank:
+	ld	a,(hl)		; load next character
+	or	a		; string ends with a null
+	ret	z		; if null, return pointing to null
+	cp	' '		; check for blank
+	ret	nz		; return if not blank
+	inc	hl		; if blank, increment character pointer
+	jr	nonblank	; and loop
+;
+; Convert character in A to uppercase
+;
+ucase:
+	cp	'a'		; if below 'a'
+	ret	c		; ... do nothing and return
+	cp	'z' + 1		; if above 'z'
+	ret	nc		; ... do nothing and return
+	res	5,a		; clear bit 5 to make lower case -> upper case
+	ret			; and return
+;
+; Add the value in A to HL (HL := HL + A)
+;
+addhl:
+	add	a,l		; A := A + L
+	ld	l,a		; Put result back in L
+	ret	nc		; if no carry, we are done
+	inc	h		; if carry, increment H
+	ret			; and return
+;
+; Jump indirect to address in HL
+;
+jphl:
+	jp	(hl)
+;
+; Errors
+;
+erruse:	; command usage error (syntax)
+	ld	de,msguse
+	jr	err
+;
+errprm:	; command parameter error (syntax)
+	ld	de,msgprm
+	jr	err
+;
+errbio:	; invalid BIOS or version
+	ld	de,msgbio
+	jr	err
+;
+err:	; print error string and return error signal
+	call	crlf2		; print newline
+;
+err1:	; without the leading crlf
+	call	prtstr		; print error string
+;
+err2:	; without the string
+;	call	crlf		; print newline
+	or	$FF		; signal error
+	ret			; done
+;
+;===============================================================================
+; Storage Section
+;===============================================================================
+;
+last	.db	0		; last LSB of timer value
+cont	.db	0		; non-zero indicates continuous display
+first	.db	$FF		; first pass flag (true at start)
+;
+stksav	.dw	0		; stack pointer saved at start
+	.fill	stksiz,0	; stack
+stack	.equ	$		; stack top
+;
+; Messages
+;
+msgban	.db	"TIMER v1.1, 10-Nov-2019",13,10
+	.db	"Copyright (C) 2019, Wayne Warthen, GNU GPL v3",0
+msguse	.db	"Usage: TIMER [/C] [/?]",13,10
+	.db	"  ex. TIMER           (display current timer value)",13,10
+	.db	"      TIMER /?        (display version and usage)",13,10
+	.db	"      TIMER /C        (display timer value continuously)",0
+msgprm	.db	"Parameter error (TIMER /? for usage)",0
+msgbio	.db	"Incompatible BIOS or version, "
+	.db	"HBIOS v", '0' + rmj, ".", '0' + rmn, " required",0
+strtick	.db	" Ticks, ",0
+strsec	.db	" Seconds",0
+;
+	.end

Source/Apps/Tune/Build.cmd

@@ -0,0 +1,13 @@
+@echo off
+setlocal
+
+set TOOLS=../../../Tools
+set PATH=%TOOLS%\tasm32;%PATH%
+set TASMTABS=%TOOLS%\tasm32
+
+tasm -t180 -g3 -fFF Tune.asm Tune.com Tune.lst
+
+if errorlevel 1 goto :eof
+
+copy /Y Tune.com ..\..\..\Binary\Apps\
+copy /Y Tunes\*.* ..\..\..\Binary\Apps\Tunes\

Source/Apps/Tune/Clean.cmd

@@ -0,0 +1,5 @@
+@echo off
+setlocal
+
+if exist *.com del *.com
+if exist *.lst del *.lst

Source/Apps/Tune/MYMPlay.txt

@@ -0,0 +1,50 @@
+
+      MYMPLAY 0.4 by Lieves!Tuore
+
+This is just a quick project inspired
+by discussion in comp.sys.msx.
+
+STSound by Leonard/Oxygene is a player
+for YM files, which are basically just
+plain PSG register dumps. The format is
+unfortunately not well suited for a
+low-memory system like MSX1. Therefore,
+I introduced a brand new fileformat
+called MYM. It holds the same data but
+compressed differently.
+
+To convert between YM and MYM there's a
+utility, YM2MYM. It packs a _raw_ YM
+file to a MYM file. So before you start
+to convert shitload of YM tunes, unpack
+them with LHA first. Only YM2/YM3/YM3b
+files can be converted at the moment.
+Many new YM's are YM5, however.
+
+The other files are MYM2YM for reverse
+conversion and of course the player
+itself (including the source). The
+assembly source is for Table-driven
+assembler (TASM), not GEN80, sorry
+about that. I stripped the tailing 0's
+from the final .COM file to make it
+smaller (Now it IS small ;v)
+
+Thanks to Spectrum and CPC fanatics
+we now have version for both platforms
+too. MSX version is the most "mature"
+one at the moment, but let's see about
+that...
+
+Version 0.4 comes with an updated
+YM2MYM converter that now recognizes
+YM5 files. The actual MYMPlay is
+better too, it takes 1.7kB less memory
+so you can play bigger tunes (if any).
+
+You'll find a pile of MYM tunes here:
+ftp://ftp.kameli.net/pub/mym/
+And the latest version of MYMPLAY here:
+http://www.kameli.net/lt/
+
+        Marq/L!T, marq@iki.fi

Source/Apps/Tune/Makefile

@@ -0,0 +1,12 @@
+OBJECTS = Tune.com
+DEST = ../../../Binary/Apps
+TOOLS = ../../../Tools
+
+include $(TOOLS)/Makefile.inc
+
+Tune.com: Tune.asm
+	$(TASM) Tune.asm Tune.com
+
+all::
+	mkdir -p $(DEST)/Tunes
+	cp Tunes/* $(DEST)/Tunes

Source/Apps/Tune/PTxPlay.txt

@@ -0,0 +1,113 @@
+Universal PT2 and PT3 player for ZX Spectrum and MSX Release 1
+(c)2004-2007 S.V.Bulba <vorobey@mail.khstu.ru>
+http://bulba.untergrund.net/ (http://bulba.at.kz/)
+Release date: 30 of April 2007
+
+Common remarks
+--------------
+
+The project is a compact combination of two players: Vortex Tracker II v1.0 PT3
+player for ZX Spectrum and Universal PT2 player for ZX Spectrum and MSX
+computers. This player is a little slower than standalone players, but more
+compact: less than 2K instead of 2.6K (1.6+1).
+
+As bonus there are some additional functions (conditional assembly):
+
+1) ROUT procedure for ZX or MSX;
+2) positions counter at (START+11);
+3) ability to change channels allocation during playing;
+4) checking loop point;
+5) disabling official identificator.
+
+New for this release: added PT v3.7 features (commands 1.xx and 2.xx).
+
+Project was compiled in assembler for Win32:
+
+SjASM Z80 Assembler v0.39f
+Copyright 2005 Sjoerd Mastijn
+
+Files
+-----
+
+PTxPlay.asm - source Z80 assembler code.
+PTxPlay.h - same text is prepared for Alasm.
+PTxPlay.txt - same text is prepared for ZX Asm 3.10.
+PTxPlay - assembled binary code block in minimal configuration for ZX Spectrum
+with identificator to load at #C000 address, zeroes at end can be truncated.
+
+Entry points
+------------
+
+Before playing at (START+10) set bit 1 for PT2 and reset for PT3 and call START
+(loading) address. To detect module type you can use UniSearch by Spectre.
+
+Player is not reallocable, so you need to assemble with other ORG value, if you
+want to load code at other than #C000 address, also you can place VARS area to
+any other address too. After calling START AY is stop any sounding. At START+10
+is located SETUP byte, where bit 0 is used to control looping of melody. At any
+time you can set bit 0 to disable loop. Bit 7 can be checked at any moment, it
+is set after reaching end of module (finishing playing of last position). Bits
+2 and 3 is used for setting channels allocation. Only first three combinations
+of these bits are allowed: 0 - ABC, 1 - ACB, 2 - BAC. ABC is used to output
+channels "as is". ACB swaps B and C, and BAC swaps A and B. So, any stereo
+combinations can be heard: ABC-stereo for the most xUSSR ZX-clones, ACB - East
+Europe ones, and BAC - ZS Scorpion 256K.
+
+In current compilation module must be loaded after variables (by default). Of
+course, you can change it in source or in assembled code. Also you can specify
+module address in HL as follows:
+
+	LD HL,PT3ModuleAddress
+	XOR A ;PT3
+	LD (START+10),A
+	CALL START+3
+
+By calling START you are proceeding INIT procedure, which analyzes module type
+bit and prepares corresponding player branches, checks PT3 module version and
+prepares corresponding note and volume tables (it is need for correct playing of
+modules of different PT3 subversions). Also you can call START after stopping
+playing to mute AY sound. In last case you can call START+8 to simple mute AY
+sound, to continue playing simply continue calling START+5 as usually.
+
+To play, call START+5 address each 1/50 of second (interrupt). Playing selects
+right portamento algorithm for old (v3.5-) and new (v3.6+ or VT II) modules.
+During running PLAY subprogram no any interrupts are expected, it is your task
+to right call PLAY. For example, next example is totaly right:
+
+	CALL #C000 ;calling init
+	EI ;enable interrupts
+_LP	HALT ;wait for next interrupt
+	CALL #C005 ;call play, player uses 10500 tacts max,
+;so no interrupt can be before next HALT
+	XOR A ;test keyboard
+	IN A,(#FE)
+	CPL
+	AND 15
+	JR Z,_LP
+	CALL #C008 ;mute AY sound (you can resume playing from current place)
+	RET
+
+At START+11 current position byte can be placed (see conditional assembly keys).
+To get common number of position, see module header or use UniSearch by Spectre.
+
+Example of playing without loop:
+
+	LD A,1
+	LD (START+10),A
+	CALL START
+	EI
+LOOP	HALT
+	CALL START+5
+	LD A,(START+10)
+	RLA
+	JR NC,LOOP
+	RET
+
+Read also all comments in source file.
+
+Thanks to Andrey Bogdanovich aka Spectre for help and UniSearch; Ivan Roshin for
+tone and volume tables generators; Alfonso D.C. aka Dioniso for info about MSX.
+
+Sergey Bulba
+
+19 of September 2004 - 30 of April 2007

Source/Apps/XM/Build.cmd

@@ -9,11 +9,14 @@ set ZXBINDIR=%TOOLS%\cpm\bin\
 set ZXLIBDIR=%TOOLS%\cpm\lib\
 set ZXINCDIR=%TOOLS%\cpm\include\
 
-zx mac xmdm125
+zx mac xmdm125.asm $PO
 zx slr180 -xmhb/HF
+rem zx slr180 -xmuf/HF
 zx mload25 XM=xmdm125,xmhb
+rem zx mload25 XMUF=xmdm125,xmuf
 
 rem set PROMPT=[Build] %PROMPT%
 rem %comspec%
 
-move /Y XM.com ..
+copy /Y XM.com ..\..\..\Binary\Apps\
+rem copy /Y XMUF.com ..\..\..\Binary\Apps\

Source/Apps/XM/Clean.cmd

@@ -4,4 +4,4 @@ setlocal
 if exist *.hex del *.hex
 if exist *.prn del *.prn
 if exist *.lst del *.lst
-if exist xm.com del xm.com
+if exist *.com del *.com

Source/Apps/XM/Makefile

@@ -0,0 +1,13 @@
+#OBJECTS = xm.com xmuf.com
+OBJECTS = xm.com
+DEST = ../../../Binary/Apps
+TOOLS = ../../../Tools
+OTHERS = *.hex
+
+include $(TOOLS)/Makefile.inc
+
+xm.com: xmdm125.hex xmhb.hex
+	$(ZXCC) $(CPM)/MLOAD25 XM=xmdm125,xmhb
+
+#xmuf.com: xmdm125.hex xmuf.hex
+#	$(ZXCC) $(CPM)/MLOAD25 XMUF=xmdm125,xmuf

Source/Apps/XM/xmdm125.asm

@@ -71,6 +71,7 @@ STX	EQU	02H	; 'Start of header' for 1024 byte blocks
 ; Conditional equates - change to suit your system, then assemble
 ;
 MHZ	EQU	10	; Clock speed, use integer (2,4,5,8, etc.)
+SCL	EQU	6600	; WBW: Receive loop timeout scalar
 CPM3	EQU	NO	; Yes, if operating in CP/M v3.0 environment
 STOPBIT	EQU	NO	; No, if using 1 stop bit, yes if using 2
 BYEBDOS	EQU	NO	; Yes, if using BYE338-up, BYE501-up, or NUBYE
@@ -328,7 +329,7 @@ MAXMIN	EQU	60	; Minutes for maximum file transfer time.
 ; Length of external patch program.  If over 128 bytes, get/set size
 ;
 LARGEIO	EQU	YES	; Yes, if modem patch area over 128 bytes
-LARSIZE	EQU	100H	; If 'LARGEIO' set patch area size (bytes) here
+LARSIZE	EQU	500H	; If 'LARGEIO' set patch area size (bytes) here
 ;
 ;=======================================================================
 ;
@@ -817,7 +818,8 @@ BADROP:	POP	PSW		; Restore stack
 ALLSET:	CALL	GETCHR
 	CALL	GETCHR
 	CALL	MINIT
-	STA	CPUMHZ		; WBW: Update CPU speed from MINIT in A
+	STA	CPUMHZ		; WBW: Save CPU speed from MINIT
+	SHLD	RCVSCL		; WBW: Save rcv loop scalar from MINIT
 ;
 ; Jump to appropriate function
 ;
@@ -3472,7 +3474,12 @@ MSLOOP:	ADD	B		; Number of seconds
 	MOV	B,A		; Put total value back into 'B'
 ;
 MSEC:	 IF	NOT BYEBDOS
-	LXI	D,6600		; 1 second DCR count
+;WBW BEGIN: Use scalar passed in by patch
+	;LXI	D,6600		; 1 second DCR count
+	XCHG
+	LHLD	RCVSCL		; Use scalar value from patch
+	XCHG
+;WBW END
 	 ENDIF
 ;
 	 IF	BYEBDOS
@@ -5639,7 +5646,8 @@ MSGFLG:	DB	0		; Message upload flag
 SAVEHL:	DW	0		; Saves TBUF command line address
 TOTERR:	DW	0		; Total errors for transmission attempt
 VRECNO:	DW	0		; Virtual record # in 128 byte records
-CPUMHZ:	DW	MHZ		; WBW: CPU speed in MHz, *word value*
+CPUMHZ:	DB	MHZ		; WBW: CPU speed in MHz
+RCVSCL: DW	SCL		; WBW: Recv loop scalar
 ;
 EOFLG:	DB	0		; 'EOF' flag (1=yes)
 EOFCTR:	DB	0		; EOF send counter

Source/Apps/XM/xmhb.180

@@ -0,0 +1,908 @@
+;=======================================================================
+;
+; XMHB.Z80 - XMODEM12 PATCH FILE FOR ROMWBW HBIOS
+;
+;   Wayne Warthen - wwarthen@gmail.com
+;
+; 2018-06-06 WBW Added support for RC2014 w/ Z180
+; 2019-08-17 WBW Refactored and merged Phil's ECB-FIFO support
+; 2019-08-28 WBW Refactored ASCI support
+;
+;=======================================================================
+;
+	ASEG
+;
+NO	EQU	0
+YES	EQU	NOT NO
+;
+ERRDET	EQU	NO		; detect parity/framing/overrun errs
+;
+BASE	EQU	100H		; start of cp/m normal program area
+;
+BDOS	EQU	00005H		; BDOS function dispatch vector
+;
+;=======================================================================
+;
+; Jump table: The jump table must be in exactly the same sequence as the
+; one in XMODEM.  Note the ORG of 103H - This jump table has no jump to
+; 'BEGIN'.
+;
+	ORG	BASE + 3	; start after 'JMP BEGIN'
+;
+	JP	CONOUT		; must be 00000h if not used, see below
+	JP	MINIT		; initialization routine (if needed)
+	JP	UNINIT		; undo whatever 'MINIT' did (or return)
+JPTBL:
+	JP	SENDR		; send character (via pop psw)
+	JP	CAROK		; test for carrier
+	JP	MDIN		; receive data byte
+	JP	GETCHR		; get character from modem
+	JP	RCVRDY		; check receive ready
+	JP	SNDRDY		; check send ready
+	JP	SPEED		; get speed value for file transfer time
+	JP	EXTRA1		; extra for custom routine
+	JP	EXTRA2		; extra for custom routine
+	JP	EXTRA3		; extra for custom routine
+;
+;-----------------------------------------------------------------------
+;
+; Output character to console
+;
+CONOUT	EQU	0		; not used
+;
+;-----------------------------------------------------------------------
+;
+; Initialize modem
+;
+; This procedure has been usurped to dynamically detect the type
+; of system we are running on and install the *real* jump table
+; entries as appropriate.
+;
+MINIT:
+	; Announce
+	LD	DE,RBC		; RetroBrew Computers
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+;
+	; Identify BIOS (RomWBW HBIOS or UNA UBIOS)
+	CALL	IDBIO		; 1=HBIOS, 2=UBIOS
+	LD	(BIOID),A	; Save it
+	DEC	A		; Test for HBIOS
+	JR	Z,HINIT		; Do HBIOS setup
+	DEC	A		; Test for UBIOS
+	JR	Z,UINIT		; Do UBIOS setup
+;
+	; Neither UNA nor RomWBW
+	LD	DE,ERR_BIO	; BIOS error message
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+	JP	0		; Bail out!
+;
+MINIT_RET:
+	PUSH	HL		; Save HL (JP table adr)
+
+	; Display port notification string
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+;
+	; Newline
+	LD	C,9		; BDOS string display function
+	LD	DE,CRLF		; Newline
+	CALL	BDOS		; Do it
+;
+	; Copy real vectors into active jump table
+	POP	HL		; Recover HL
+	LD	DE,JPTBL	; Real jump table is destination
+	LD	BC,7 * 3	; Copy 7 3-byte entries
+	LDIR			; Do the copy
+;
+	; Return with CPU speed in A
+	LD	A,(CPUSPD)	; A := CPU speed in MHz
+	LD	HL,(RCVSCL)	; HL := receive scalar
+	RET			; and return
+;
+HINIT:
+	; Display RomWBW notification string
+	LD	DE,HBTAG	; BIOS notification string
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+;
+	; Get CPU speed from RomWBW HBIOS and save it
+	LD	B,0F8H		; HBIOS SYSGET function 0xF8
+	LD	C,0F0H		; CPUINFO subfunction 0xF0
+	RST	08		; Do it, L := CPU speed in MHz
+	LD	A,L		; Move it to A
+	LD	(CPUSPD),A	; Save it
+;
+	; Get HBIOS character 0 device type
+	LD	B,006H		; HBIOS DEVICE function 0x06
+	LD	C,000H		; HBIOS char 0 device
+	RST	08		; Do it, D=device type
+	LD	A,D		; Put result in A
+	CP	000H		; UART?
+	JP	Z,U_INIT	; If so, do UART init
+	CP	010H		; ASCI?
+	JP	Z,A_INIT	; If so, do ASCI init
+	CP	080H		; USB-FIFO?
+	JP	Z,UF_INIT	; If so, do USB-FIFO init
+	JP	H_INIT		; Otherwise, use HBIOS I/O
+;
+UINIT:
+	; Display UNA notification string
+	LD	DE,UBTAG	; BIOS notification string
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+;
+	; Get CPU speed from UNA and save it
+	LD	C,0F8H		; UNA BIOS Get PHI function
+	RST	08		; Returns speed in Hz in DE:HL
+	LD	B,4		; Divide MHz in DE:HL by 100000H
+UINIT1:
+	SRL	D		; ... to get approx CPU speed in
+	RR	E		; ...MHz.  Throw away HL, and
+	DJNZ	UINIT1		; ...right shift DE by 4.
+	INC	E		; Fix up for value truncation
+	LD	A,E		; Put in A
+	LD	(CPUSPD),A	; Save it
+;
+	; Check CPU, Z80=UART, Z180=ASCI
+	LD	DE,00202H	; D := 2, E := 2
+	MLT	DE		; DE := D * E == 4
+	BIT	2,E		; Bit 2 wil be set if mlt happend
+	JP	Z,U_INIT	; UART initialization
+	JP	A_INIT		; otherwise, ASCI
+;
+HWERR:
+	; Failed to identify target comm hardware
+	LD	DE,ERR_HW	; Hardware error message
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+	JP	0		; Bail out!
+;
+; Identify active BIOS.	 RomWBW HBIOS=1, UNA UBIOS=2, else 0
+;
+IDBIO:
+;
+	; Check for UNA (UBIOS)
+	LD	A,(0FFFDH)	; fixed location of UNA API vector
+	CP	0C3H		; jp instruction?
+	JR	NZ,IDBIO1	; if not, not UNA
+	LD	HL,(0FFFEH)	; get jp address
+	LD	A,(HL)		; get byte at target address
+	CP	0FDH		; first byte of UNA push ix instruction
+	JR	NZ,IDBIO1	; if not, not UNA
+	INC	HL		; point to next byte
+	LD	A,(HL)		; get next byte
+	CP	0E5H		; second byte of UNA push ix instruction
+	JR	NZ,IDBIO1	; if not, not UNA, check others
+	LD	A,2		; UNA BIOS id = 2
+	RET			; and done
+;
+IDBIO1:
+	; Check for RomWBW (HBIOS)
+	LD	HL,(0FFFEH)	; HL := HBIOS ident location
+	LD	A,'W'		; First byte of ident
+	CP	(HL)		; Compare
+	JR	NZ,IDBIO2	; Not HBIOS
+	INC	HL		; Next byte of ident
+	LD	A,~'W'		; Second byte of ident
+	CP	(HL)		; Compare
+	JR	NZ,IDBIO2	; Not HBIOS
+	LD	A,1		; HBIOS BIOS id = 1
+	RET			; and done
+;
+IDBIO2:
+	; No idea what this is
+	XOR	A		; Setup return value of 0
+	RET			; and done
+;
+;-----------------------------------------------------------------------
+;
+; Uninitialize modem
+;
+UNINIT:
+	LD	A,(BIOID)
+	CP	1		; Is HBIOS?
+	JR	Z,H_UNINIT	; Handle HBIOS
+	CP	2		; Is UBIOS?
+	JR	Z,U_UNINIT	; Handle UBIOS
+	RET			; Just return
+;
+H_UNINIT:
+	; HBIOS: Reset character device 0
+	LD	B,04H		; HBIOS CIOINIT function 0x04
+	LD	C,0		; Unit = 0
+	LD	DE,-1		; Reset w/ current settings
+	RST	08		; Do it
+	RET			; not initialized, so no 'UN-INITIALIZE'
+;
+U_UNINIT:
+	; UBIOS: Reset character device 0
+	LD	C,10H		; UNA INIT function 0x10
+	LD	B,0		; Unit = 0
+	LD	DE,-1		; Reset w/ current settings
+	RST	08		; Do it
+	RET			; not initialized, so no 'UN-INITIALIZE'
+;
+;-----------------------------------------------------------------------
+;
+; The following are all dummy routines that are unused because MINIT
+; dynamically installs the real jump table.
+;
+SENDR:
+CAROK:
+MDIN:
+GETCHR:
+RCVRDY:
+SNDRDY:
+SPEED:
+EXTRA1:
+EXTRA2:
+EXTRA3:
+	RET
+;
+BIOID	DB	0		; BIOS ID, 1=HBIOS, 2=UBIOS
+CPUSPD	DB	10		; CPU speed in MHz
+RCVSCL	DW	2800		; RECV loop timeout scalar
+;
+RBC	DB	"RBC, 28-Aug-2019$"
+;
+U_LBL	DB	", UART$"
+A_LBL	DB	", ASCI$"
+S_LBL	DB	", SIO$"
+H_LBL	DB	", COM$"
+UF_LBL	DB	", USB-FIFO$"
+;
+UBTAG	DB	" [UNA]$"
+HBTAG	DB	" [WBW]$"
+;
+CRLF	DB	13, 10, "$"
+;
+ERR_BIO	DB	13, 10, 13, 10, "++ Unknown BIOS ++", 13, 10, "$"
+ERR_HW	DB	13, 10, 13, 10, "++ Unknown Hardware ++", 13, 10, "$"
+;
+;=======================================================================
+;=======================================================================
+;
+; 8250-like UART @ Port 68H
+;
+;=======================================================================
+;=======================================================================
+;
+; UART port constants
+;
+U_BASE	EQU	68H		; UART base port
+U_DATP	EQU	U_BASE + 0	; data in port
+U_DATO	EQU	U_BASE + 0	; data out port
+U_CTLP	EQU	U_BASE + 5	; control/status port
+U_SNDB	EQU	20H		; bit to test for send ready
+U_SNDR	EQU	20H		; value when ready to send
+U_RCVB	EQU	01H		; bit to test for receive ready
+U_RCVR	EQU	01H		; value when ready to receive
+U_PARE	EQU	04H		; bit for parity error
+U_OVRE	EQU	02H		; bit for overrun error
+U_FRME	EQU	08H		; bit for framing error
+U_ERRS	EQU	U_FRME | U_OVRE | U_PARE
+;
+; Following jump table is dynamically patched into real jump
+; table at program startup.  See MINIT above.  Note that only a
+; subset of the jump table is overlaid (SENDR to SPEED).
+;
+U_JPTBL:
+	JP	U_SENDR		; send character (via pop psw)
+	JP	U_CAROK		; test for carrier
+	JP	U_MDIN		; receive data byte
+	JP	U_GETCHR	; get character from modem
+	JP	U_RCVRDY	; check receive ready
+	JP	U_SNDRDY	; check send ready
+	JP	U_SPEED		; get speed value for file transfer time
+;
+;-----------------------------------------------------------------------
+;
+; UART initialization
+;
+U_INIT:
+	LD	HL,U_JPTBL
+	LD	DE,U_LBL
+	JP	MINIT_RET
+;
+;-----------------------------------------------------------------------
+;
+; Send character on top of stack
+;
+U_SENDR:
+	POP	AF		; get character to send from stack
+	OUT	(U_DATO),A	; send to port
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test and report carrier status, Z set if carrier present
+;
+U_CAROK:
+	XOR	A		; not used, always indicate present
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Get a character (assume character ready has already been tested)
+;
+U_MDIN:
+U_GETCHR:
+	IN	A,(U_DATP)	; read character from port
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for character ready to receive, Z = ready
+; Error code returned in A register
+; *** Error code does not seem to be used ***
+;
+U_RCVRDY:
+	IN	A,(U_CTLP)	; get modem status
+;
+	 IF ERRDET
+;
+	; With error detection (slower)
+	PUSH	BC		; save scratch register
+	PUSH	AF		; save full status on stack
+	AND	U_ERRS		; isolate line err bits
+	LD	B,A		; save err status in B
+	POP	AF		; get full status back
+	AND	U_RCVB		; isolate ready bit
+	CP	U_RCVR		; test it (set flags)
+	LD	A,B		; get the error code back
+	POP	BC		; restore scratch register
+;
+	 ELSE
+;
+	; No error detection (faster)
+	AND	U_RCVB		; isolate ready bit
+	CP	U_RCVR		; test it (set flags)
+	LD	A,0		; report no line errors
+;
+	 ENDIF
+;
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for ready to send a character, Z = ready
+;
+U_SNDRDY:
+	IN	A,(U_CTLP)	; get status
+	AND	U_SNDB		; isolate transmit ready bit
+	CP	U_SNDR		; test for ready value
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Report baud rate (index into SPTBL returned in register A)
+;
+U_SPEED:
+	LD	A,8		; arbitrarily return 9600 baud
+	RET
+;
+;=======================================================================
+;=======================================================================
+;
+; Z180 Primary ASCI
+;
+; - Port is determined dynamically in A_INIT
+;
+;=======================================================================
+;=======================================================================
+;
+; ASCI port constants
+;
+A_DATP	EQU	08H		; Z180 TSR - ASCI receive data port
+A_DATO	EQU	06H		; Z180 TDR - ASCI transmit data port
+A_CTLP	EQU	04H		; Z180 STAT - ASCI status port
+A_CTL2	EQU	00H		; Z180 CNTLA - ASCI control port
+;                                 
+A_SNDB	EQU	02H		; Z180 STAT:TDRE - xmit data reg empty bit
+A_SNDR	EQU	02H		; Z180 STAT:TDRE - xmit data reg empty value
+A_RCVB	EQU	80H		; Z180 STAT:RDRF - rcv data reg full bit
+A_RCVR	EQU	80H		; Z180 STAT:RDRF - rcv data reg full value
+A_PARE	EQU	20H		; Z180 STAT:PE - parity error bit
+A_OVRE	EQU	40H		; Z180 STAT:OVRN - overrun error bit
+A_FRME	EQU	10H		; Z180 STAT:FE - framing error bit
+A_ERRS	EQU	A_FRME | A_OVRE | A_PARE
+;
+A_BASE	DB	00H		; internal IO base address for Z180
+;
+; Following jump table is dynamically patched over initial jump
+; table at program startup.  See MINIT above.  Note that only a
+; subset of the jump table is overlaid (SENDR to SPEED).
+;
+A_JPTBL:
+	JP	A_SENDR		; send character (via pop psw)
+	JP	A_CAROK		; test for carrier
+	JP	A_MDIN		; receive data byte
+	JP	A_GETCHR	; get character from modem
+	JP	A_RCVRDY	; check receive ready
+	JP	A_SNDRDY	; check send ready
+	JP	A_SPEED		; get speed value for file transfer time
+;
+;-----------------------------------------------------------------------
+;
+; ASCI initialization
+;
+A_INIT:
+	; Test for location of Z180 internal registers
+	; and use appropriate I/O address.
+	LD	B,0		; set MSB for 16 bit I/O
+	LD	C,040H|3FH	; internal registers @ 40H?
+	IN	A,(C)		; read
+	CP	040H|01FH	; same value except for bit 5?
+	JR	Z,A_INIT1	; do ASCI init (port in C)
+	LD	C,0C0H|3FH	; internal registers @ C0H?
+	IN	A,(C)		; read
+	CP	0C0H|1FH	; same value except for bit 5?
+	JR	Z,A_INIT1	; do ASCI init (port in C)
+	JP	HWERR		; unknown hardware error
+;
+A_INIT1:
+	LD	A,C		; test port value to A
+	AND	0C0H		; only top two bits relevant
+	LD	(A_BASE),A	; save it
+	ADD	A,A_CTLP	; status port offset
+	LD	C,A		; put in C for I/O
+	LD	B,0		; MSB for 16 bit I/O
+	XOR	A		; clear interrupt enable flags
+	OUT	(C),A		; do it
+;
+	LD	HL,A_JPTBL
+	LD	DE,A_LBL
+	JP	MINIT_RET
+;
+;-----------------------------------------------------------------------
+;
+; Send character on top of stack
+;
+A_SENDR:
+	EX	(SP),HL		; save HL, HL := char to send
+	PUSH	BC		; save scratch register
+	LD	A,(A_BASE)	; IO base address
+	ADD	A,A_DATO	; data out port offset
+	LD	C,A		; put in C for I/O
+	LD	B,0		; MSB for 16 bit I/O
+	OUT	(C),H		; send to port
+	POP	BC		; restore scratch reg
+	POP	HL		; restore HL
+	RET			; done
+;
+;-----------------------------------------------------------------------
+;
+; Test and report carrier status, Z set if carrier present
+;
+A_CAROK:
+	XOR	A		; not used, always indicate present
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Get a character (assume character ready has already been tested)
+;
+A_MDIN:
+A_GETCHR:
+	PUSH	BC		; save scratch register
+	LD	A,(A_BASE)	; IO base address
+	ADD	A,A_DATP	; data in port offset
+	LD	C,A		; put in C for I/O
+	LD	B,0		; MSB for 16 bit I/O
+	IN	A,(C)		; read character from port
+	POP	BC		; restore scratch reg
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for character ready to receive, Z = ready
+; Error code returned in A register
+; *** Error code does not seem to be used ***
+;
+A_RCVRDY:
+	PUSH	BC		; save scratch register
+	LD	A,(A_BASE)	; IO base address
+	ADD	A,A_CTLP	; status port offset
+	LD	C,A		; put in C for I/O
+	LD	B,0		; MSB for 16 bit I/O
+	IN	A,(C)		; get modem status
+	PUSH	AF		; save full status on stack
+	AND	A_ERRS		; isolate line err bits
+	LD	B,A		; save err status in B
+
+	; Z180 ASCI ports will stall if there are errors.
+	; Error bits are NOT cleared by merely reading
+	; the status register.	Below, bit 3 of ASCI
+	; control register is written with a zero to
+	; clear error(s) if needed.
+	JR	Z,A_RCVRDY2	; if no errs, continue
+	PUSH	BC		; save scratch reg
+	LD	A,(A_BASE)	; IO base address
+	ADD	A,A_CTL2	; status port offset
+	LD	C,A		; put in C for I/O
+	LD	B,0		; MSB for 16 bit I/O
+	IN	A,(C)		; get current control reg value
+	AND	0F7H		; force err reset bit to zero
+	OUT	(C),A		; write control register
+	POP	BC		; restore scratch reg
+;
+A_RCVRDY2:
+	POP	AF		; get full status back
+	AND	A_RCVB		; isolate ready bit
+	CP	A_RCVR		; test it (set flags)
+	LD	A,B		; get the error code back
+	POP	BC		; restore scratch register
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for ready to send a character, Z = ready
+;
+A_SNDRDY:
+	PUSH	BC		; save scratch register
+	LD	A,(A_BASE)	; IO base address
+	ADD	A,A_CTLP	; status port offset
+	LD	C,A		; put in C for I/O
+	LD	B,0		; MSB for 16 bit I/O
+	IN	A,(C)		; get modem status
+	AND	A_SNDB		; isolate transmit ready bit
+	CP	A_SNDR		; test for ready value
+	POP	BC		; restore scratch register
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Report baud rate (index into SPTBL returned in register A)
+;
+A_SPEED:
+	LD	A,8		; arbitrarily return 9600 baud
+	RET
+;
+;=======================================================================
+;=======================================================================
+;
+; Zilog SIO @ Port 80H
+;
+;=======================================================================
+;=======================================================================
+;
+; Currently assumes the port address and ordering conventions of the
+; official RC2014 SIO module.  Will not work with others such as EZZ80
+; or ZP.
+;
+; SIO port constants
+;
+S_BASE	EQU	80H		; SIO base port
+S_DATP	EQU	S_BASE + 1	; data in port
+S_DATO	EQU	S_BASE + 1	; data out port
+S_CTLP	EQU	S_BASE + 0	; control/status port
+S_SNDB	EQU	04H		; bit to test for send ready
+S_SNDR	EQU	04H		; value when ready to send
+S_RCVB	EQU	01H		; bit to test for receive ready
+S_RCVR	EQU	01H		; value when ready to receive
+;
+; Following jump table is dynamically patched into real jump
+; table at program startup.  See MINIT above.  Note that only a
+; subset of the jump table is overlaid (SENDR to SPEED).
+;
+S_JPTBL:
+	JP	S_SENDR		; send character (via pop psw)
+	JP	S_CAROK		; test for carrier
+	JP	S_MDIN		; receive data byte
+	JP	S_GETCHR	; get character from modem
+	JP	S_RCVRDY	; check receive ready
+	JP	S_SNDRDY	; check send ready
+	JP	S_SPEED		; get speed value for file transfer time
+;
+;-----------------------------------------------------------------------
+;
+; SIO initialization
+;
+S_INIT:
+	; Suppress interrupts
+	LD	A,01H		; WR1
+	OUT	(S_CTLP),A	; Select WR1
+	XOR	A		; No interrupts
+	OUT	(S_CTLP),A	; Do it
+;
+	LD	HL,S_JPTBL
+	LD	DE,S_LBL
+	JP	MINIT_RET
+;
+;-----------------------------------------------------------------------
+;
+; Send character on top of stack
+;
+S_SENDR:
+	POP	AF		; get character to send from stack
+	OUT	(S_DATO),A	; send to port
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test and report carrier status, Z set if carrier present
+;
+S_CAROK:
+	XOR	A		; not used, always indicate present
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Get a character (assume character ready has already been tested)
+;
+S_MDIN:
+S_GETCHR:
+	IN	A,(S_DATP)	; read character from port
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for character ready to receive, Z = ready
+; Error code returned in A register
+; *** Error code does not seem to be used ***
+;
+S_RCVRDY:
+	;XOR	A
+	;OUT	(S_CTLP),A	; select WR0
+	IN	A,(S_CTLP)	; get status
+	AND	S_RCVB		; isolate ready bit
+	CP	S_RCVR		; test it (set flags)
+	LD	A,0		; report no line errors
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for ready to send a character, Z = ready
+;
+S_SNDRDY:
+	;XOR	A
+	;OUT	(S_CTLP),A	; select WR0
+	IN	A,(S_CTLP)	; get status
+	AND	S_SNDB		; isolate ready bit
+	CP	S_SNDR		; test it (set flags)
+	LD	A,0		; report no line errors
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Report baud rate (index into SPTBL returned in register A)
+;
+S_SPEED:
+	LD	A,8		; arbitrarily return 9600 baud
+	RET
+;
+;=======================================================================
+;=======================================================================
+;
+; HBIOS Console (COM0:)
+;
+;=======================================================================
+;=======================================================================
+;
+; Following jump table is dynamically patched over initial jump
+; table at program startup.  See MINIT above.  Note that only a
+; subset of the jump table is overlaid (SENDR to SPEED).
+;
+H_JPTBL:
+	JP	H_SENDR		; send character (via pop psw)
+	JP	H_CAROK		; test for carrier
+	JP	H_MDIN		; receive data byte
+	JP	H_GETCHR	; get character from modem
+	JP	H_RCVRDY	; check receive ready
+	JP	H_SNDRDY	; check send ready
+	JP	H_SPEED		; get speed value for file transfer time
+;
+;-----------------------------------------------------------------------
+;
+; HBIOS initialization
+;
+H_INIT:
+	LD	HL,1250		; Smaller receive loop timeout scalar
+	LD	(RCVSCL),HL	; ... to compensate for BIOS overhead
+;
+	LD	HL,H_JPTBL
+	LD	DE,H_LBL
+	JP	MINIT_RET
+;
+;-----------------------------------------------------------------------
+;
+; Send character on top of stack
+;
+H_SENDR:
+	POP	AF		; get character to send from stack
+	PUSH	BC
+	PUSH	DE
+	PUSH	HL
+	LD	B,01H		; HBIOS OUT function
+	LD	C,0		; console is unit 0 by fiat
+	LD	E,A		; character to E
+	RST	08		; HBIOS call
+	POP	HL
+	POP	DE
+	POP	BC
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test and report carrier status, Z set if carrier present
+;
+H_CAROK:
+	XOR	A		; not used, always indicate present
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Get a character (assume character ready has already been tested)
+;
+; This routine must NOT block.
+;
+H_MDIN:
+H_GETCHR:
+	PUSH	BC
+	PUSH	DE
+	PUSH	HL
+	LD	B,02H		; HBIOS IST function
+	LD	C,0		; console is unit 0 by fiat
+	RST	08		; HBIOS call, A := bytes pending
+	JR	NZ,H_MDIN1	; If char(s) waiting, go get it
+	XOR	A		; otherwise, return null
+	JR	H_MDIN2	; and done
+H_MDIN1:
+	LD	B,00H		; HBIOS IN function
+	LD	C,0		; console is unit 0 by fiat
+	RST	08		; HBIOS call
+	LD	A,E		; byte received to A
+H_MDIN2:
+	POP	HL
+	POP	DE
+	POP	BC
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for character ready to receive, Z = ready
+; Error code returned in A register
+; *** Error code does not seem to be used ***
+;
+H_RCVRDY:
+	PUSH	BC
+	PUSH	DE
+	PUSH	HL
+	LD	B,02H		; HBIOS IST function
+	LD	C,0		; console is unit 0 by fiat
+	RST	08		; HBIOS call, A := bytes pending
+	SUB	1		; CF set IFF zero
+	RL	A		; CF to bit 0 of A
+	AND	01H		; set Z flag as needed
+	LD	A,0		; report no line errors
+	POP	HL
+	POP	DE
+	POP	BC
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for ready to send a character, Z = ready
+;
+H_SNDRDY:
+	PUSH	BC
+	PUSH	DE
+	PUSH	HL
+	LD	B,03H		; HBIOS OST function
+	LD	C,0		; console is unit 0 by fiat
+	RST	08		; HBIOS call, A := xmit buf bytes avail
+	SUB	1		; CF set IFF zero
+	RL	A		; CF to bit 0 of A
+	AND	01H		; set Z flag as needed
+	POP	HL
+	POP	DE
+	POP	BC
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Report baud rate (index into SPTBL returned in register A)
+;
+H_SPEED:
+	LD	A,8		; arbitrarily return 9600 baud
+	RET
+;
+;
+;=======================================================================
+;=======================================================================
+;
+; WILL SOWERBUTTS ECB USB-FIFO
+;
+;=======================================================================
+;=======================================================================
+;
+UF_BASE		EQU	0CH
+UF_DATA		EQU	(UF_BASE+0)
+UF_STATUS	EQU	(UF_BASE+1)
+UF_SEND_IMM	EQU	(UF_BASE+2)
+;
+; Following jump table is dynamically patched over initial jump
+; table at program startup.  See MINIT above.  Note that only a
+; subset of the jump table is overlaid (SENDR to SPEED).
+;
+UF_JPTBL:
+	JP	UF_SENDR		; send character (via pop psw)
+	JP	UF_CAROK		; test for carrier
+	JP	UF_MDIN			; receive data byte
+	JP	UF_GETCHR		; get character from modem
+	JP	UF_RCVRDY		; check receive ready
+	JP	UF_SNDRDY		; check send ready
+	JP	UF_SPEED		; get speed value for file transfer time
+;
+;-----------------------------------------------------------------------
+;
+; USB-FIFO initialization
+;
+UF_INIT:
+	LD	HL,UF_JPTBL
+	LD	DE,UF_LBL
+	JP	MINIT_RET
+;
+;-----------------------------------------------------------------------
+;
+; Send character on top of stack
+;
+UF_SENDR:
+
+	POP	AF			; get character to send from stack
+	OUT	(UF_DATA),A		; WRITE TO FIFO
+	OUT	(UF_SEND_IMM),A	; SEND IMMEDIATE
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test and report carrier status, Z set if carrier present
+;
+UF_CAROK:
+	XOR	A			; not used, always indicate present
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Get a character (assume character ready has already been tested)
+;
+; This routine must NOT block.
+;
+UF_MDIN:
+UF_GETCHR:
+	IN	A,(UF_DATA)		; GET CHAR
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for character ready to receive, Z = ready
+; Error code returned in A register
+; *** Error code does not seem to be used ***
+;
+UF_RCVRDY:
+	IN	A,(UF_STATUS)		; B7=0 IF CHAR AVAIL, =1 IF NO CHAR.
+	RLCA				; B0=0 IF CHAR AVAIL, =1 IF NO CHAR.
+	AND	00000001B		; A=0, ZF=1 IF NO CHAR, A=1, ZF=0 IF CHAR AVAIL,
+	LD	A,0
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for ready to send a character, Z = ready
+;
+UF_SNDRDY:
+	IN	A,(UF_STATUS)		; Bit 0=0 IF SPACE AVAIL, =1 IF FULL
+	AND	00000001B		; A=0, ZF=1 IF SPACE AVAIL, A=1, ZF=0 IF FULL.
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Report baud rate (index into SPTBL returned in register A)
+;
+UF_SPEED:
+	LD	A,8			; arbitrarily return 9600 baud
+	RET
+;
+	END

Source/Apps/XM/xmuf.180

@@ -0,0 +1,331 @@
+;=======================================================================
+;
+; XMUF.Z80 - XMODEMXX PATCH FILE FOR ECB USB-FIFO
+;
+;   Phil Summers - difficultylevelhigh@gmail.com
+;   Updated: 2019-08-16
+;
+;=======================================================================
+;
+; Overlay file is Z80, build with M80:
+;   M80 =XMHB
+;   L80 XMHB,XMHB/N/X/E
+;
+	.Z80
+	ASEG
+;
+NO	EQU	0
+YES	EQU	NOT NO
+;
+ERRDET	EQU	NO		; detect parity/framing/overrun errs
+;
+BASE	EQU	100H		; start of cp/m normal program area
+;
+BDOS	EQU	00005H		; BDOS function dispatch vector
+;
+;=======================================================================
+;
+; Jump table: The jump table must be in exactly the same sequence as the
+; one in XMODEM.  Note the ORG of 103H - This jump table has no jump to
+; 'BEGIN'.
+;
+	ORG	BASE + 3	;start after 'JMP BEGIN'
+;
+	JP	CONOUT		;must be 00000h if not used, see below
+	JP	MINIT		;initialization routine (if needed)
+	JP	UNINIT		;undo whatever 'MINIT' did (or return)
+JPTBL:
+	JP	SENDR		;send character (via pop psw)
+	JP	CAROK		;test for carrier
+	JP	MDIN		;receive data byte
+	JP	GETCHR		;get character from modem
+	JP	RCVRDY		;check receive ready
+	JP	SNDRDY		;check send ready
+	JP	SPEED		;get speed value for file transfer time
+	JP	EXTRA1		;extra for custom routine
+	JP	EXTRA2		;extra for custom routine
+	JP	EXTRA3		;extra for custom routine
+;
+;-----------------------------------------------------------------------
+;
+; Output character to console
+;
+CONOUT	EQU	0		; not used
+;
+;-----------------------------------------------------------------------
+;
+; Initialize modem
+;
+; This procedure has been usurped to dynamically detect the type
+; of system we are running on and install the *real* jump table
+; entries as appropriate.
+;
+MINIT:
+;
+	; Announce
+	LD	DE,RBC		; RetroBrew Computers
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+;
+	; Identify BIOS (RomWBW HBIOS or UNA UBIOS)
+	CALL	IDBIO		; 1=HBIOS, 2=UBIOS
+	LD	(BIOID),A	; Save it
+	DEC	A		; Test for HBIOS
+	JR	Z,HINIT		; Do HBIOS setup
+	DEC	A		; Test for UBIOS
+	JR	Z,UINIT		; Do UBIOS setup
+;
+	; Neither UNA nor RomWBW
+	LD	DE,BIOERR	; BIOS error message
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+	JP	0		; Bail out!
+;
+HINIT:
+;
+	; Display RomWBW notification string
+	LD	DE,HBTAG	; BIOS notification string
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+;
+	; Get platform id from RomWBW HBIOS and save it
+	LD	B,0F1H		; HBIOS VER function 0xF1
+	LD	C,0		; Required reserved value
+	RST	08		; Do it, L := Platform ID
+	LD	A,L		; Move to A
+	LD	(PLTID),A	; Save it
+;
+	; Get CPU speed from RomWBW HBIOS and save it
+	LD	B,0F8H		; HBIOS SYSGET function 0xF8
+	LD	C,0F0H		; CPUINFO subfunction 0xF0
+	RST	08		; Do it, L := CPU speed in MHz
+	LD	A,L		; Move it to A
+	LD	(CPUSPD),A	; Save it
+	JR	MINIT1		; Continue general initialization
+;
+UINIT:
+;
+	; Display UNA notification string
+	LD	DE,UBTAG	; BIOS notification string
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+;
+	; Get CPU speed from UNA and save it
+	LD	C,0F8H		; UNA BIOS Get PHI function
+	RST	08		; Returns speed in Hz in DE:HL
+	LD	B,4		; Divide MHz in DE:HL by 100000H 
+UINIT1:
+	SRL	D		; ... to get approx CPU speed in
+	RR	E		; ...MHz.  Throw away HL, and
+	DJNZ	UINIT1		; ...right shift DE by 4.
+	INC	E		; Fix up for value truncation
+	LD	A,E		; Put in A
+	LD	(CPUSPD),A	; Save it
+	JR	MINIT1		; Continue general initialization
+;
+MINIT1:
+	LD	HL,1250		; Smaller receive loop timeout scalar
+	LD	(RCVSCL),HL	; ... to compensate for BIOS overhead
+	LD	HL,UF_JPTBL	; HBIOS jump table address
+	LD	DE,USB_FIFO	; HBIOS console notification string
+	JR	MINIT3		; Complete the initialization
+;
+MINIT3:
+	PUSH	HL		; Save HL
+
+	; Display port notification string
+	LD	C,9		; BDOS string display function
+	CALL	BDOS		; Do it
+;
+	; Newline
+	LD	C,9		; BDOS string display function
+	LD	DE,CRLF		; Newline
+	CALL	BDOS		; Do it
+;
+	; Copy real vectors into active jump table
+	POP	HL		; Recover HL
+	LD	DE,JPTBL	; Real jump table is destination
+	LD	BC,7 * 3	; Copy 7 3-byte entries
+	LDIR			; Do the copy
+;
+	; Return with CPU speed in A
+	LD	A,(CPUSPD)	; A := CPU speed in MHz
+	LD	HL,(RCVSCL)	; HL := receive scalar
+
+	RET			; and return
+;
+; Identify active BIOS.  RomWBW HBIOS=1, UNA UBIOS=2, else 0
+;
+IDBIO:
+;
+	; Check for UNA (UBIOS)
+	LD	A,(0FFFDH)	; fixed location of UNA API vector
+	CP	0C3H		; jp instruction?
+	JR	NZ,IDBIO1	; if not, not UNA
+	LD	HL,(0FFFEH)	; get jp address
+	LD	A,(HL)		; get byte at target address
+	CP	0FDH		; first byte of UNA push ix instruction
+	JR	NZ,IDBIO1	; if not, not UNA
+	INC	HL		; point to next byte
+	LD	A,(HL)		; get next byte
+	CP	0E5H		; second byte of UNA push ix instruction
+	JR	NZ,IDBIO1	; if not, not UNA, check others
+	LD	A,2		; UNA BIOS id = 2
+	RET			; and done
+;
+IDBIO1:
+	; Check for RomWBW (HBIOS)
+	LD	HL,(0FFFEH)	; HL := HBIOS ident location
+	LD	A,'W'		; First byte of ident
+	CP	(HL)		; Compare
+	JR	NZ,IDBIO2	; Not HBIOS
+	INC	HL		; Next byte of ident
+	LD	A,~'W'		; Second byte of ident
+	CP	(HL)		; Compare
+	JR	NZ,IDBIO2	; Not HBIOS
+	LD	A,1		; HBIOS BIOS id = 1
+	RET			; and done
+;
+IDBIO2:
+	; No idea what this is
+	XOR	A		; Setup return value of 0
+	RET			; and done
+;
+;
+;
+BIOID	DB	0		; BIOS ID, 1=HBIOS, 2=UBIOS
+PLTID	DB	0		; Platform ID
+CPUSPD	DB	10		; CPU speed in MHz
+RCVSCL	DW	2800		; RECV loop timeout scalar
+;
+RBC	DB	"RBC, 16-Aug-2018$"
+;
+USB_FIFO	DB	", USB-FIFO$"
+;
+UBTAG	DB	" [UNA]$"
+HBTAG	DB	" [WBW]$"
+;
+CRLF	DB	13, 10, "$"
+;
+BIOERR	DB	13, 10, 13, 10, "++ Unknown BIOS ++", 13, 10, "$"
+;
+;-----------------------------------------------------------------------
+;
+; Uninitialize modem
+;
+UNINIT:
+	LD	A,(BIOID)
+	CP	1		; Is HBIOS?
+	RET	NZ		; If not, just return
+	
+	; Reset character device 0
+	LD	B,04H		; HBIOS CIOINIT function 0x04
+	LD	C,0		; Unit = 0
+	LD	DE,-1		; Reset w/ current settings
+	RST	08		; Do it
+	RET			; not initialized, so no 'UN-INITIALIZE'
+;
+;-----------------------------------------------------------------------
+;
+; The following are all dummy routines that are unused because MINIT
+; dynamically installs the real jump table.
+;
+SENDR:
+CAROK:
+MDIN:
+GETCHR:
+RCVRDY:
+SNDRDY:
+SPEED:
+EXTRA1:
+EXTRA2:
+EXTRA3:
+	RET
+;
+;=======================================================================
+;=======================================================================
+;
+; WILL SOWERBUTTS ECB USB-FIFO 
+;
+;=======================================================================
+;=======================================================================
+;
+FIFO_BASE	EQU	0CH
+FIFO_DATA       EQU	(FIFO_BASE+0)
+FIFO_STATUS     EQU	(FIFO_BASE+1)
+FIFO_SEND_IMM   EQU	(FIFO_BASE+2)
+;
+; Following jump table is dynamically patched over initial jump
+; table at program startup.  See MINIT above.  Note that only a
+; subset of the jump table is overlaid (SENDR to SPEED).
+;
+UF_JPTBL:
+	JP	UF_SENDR		;send character (via pop psw)
+	JP	UF_CAROK		;test for carrier
+	JP	UF_MDIN			;receive data byte
+	JP	UF_GETCHR		;get character from modem
+	JP	UF_RCVRDY		;check receive ready
+	JP	UF_SNDRDY		;check send ready
+	JP	UF_SPEED		;get speed value for file transfer time
+;
+;-----------------------------------------------------------------------
+;
+; Send character on top of stack
+;
+UF_SENDR:
+
+	POP	AF			; get character to send from stack
+	OUT	(FIFO_DATA),A		; WRITE TO FIFO
+	OUT	(FIFO_SEND_IMM),A	; SEND IMMEDIATE
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test and report carrier status, Z set if carrier present
+;
+UF_CAROK:
+	XOR	A			; not used, always indicate present
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Get a character (assume character ready has already been tested)
+;
+; This routine must NOT block.
+;
+UF_MDIN:
+UF_GETCHR:
+	IN	A,(FIFO_DATA)		; GET CHAR
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for character ready to receive, Z = ready
+; Error code returned in A register
+; *** Error code does not seem to be used ***
+;
+UF_RCVRDY:
+	IN	A,(FIFO_STATUS)		; B7=0 IF CHAR AVAIL, =1 IF NO CHAR.
+	RLCA				; B0=0 IF CHAR AVAIL, =1 IF NO CHAR.
+	AND	00000001B		; A=0, ZF=1 IF NO CHAR, A=1, ZF=0 IF CHAR AVAIL, 
+	LD	A,0
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Test for ready to send a character, Z = ready
+;
+UF_SNDRDY:
+	IN	A,(FIFO_STATUS)		; Bit 0=0 IF SPACE AVAIL, =1 IF FULL
+	AND	00000001B		; A=0, ZF=1 IF SPACE AVAIL, A=1, ZF=0 IF FULL.
+	RET
+;
+;-----------------------------------------------------------------------
+;
+; Report baud rate (index into SPTBL returned in register A)
+;
+UF_SPEED:
+	LD	A,8			; arbitrarily return 9600 baud
+	RET
+;
+	END

Source/Apps/XM125/xmhb.180

@@ -1,361 +0,0 @@
-;=======================================================================
-;
-; XMHB.Z80 - XMODEMXX PATCH FILE FOR ROMWBW HBIOS
-;
-;   Wayne Warthen - wwarthen@gmail.com
-;   Updated: 2017-08-09
-;
-;=======================================================================
-;
-; Overlay file is Z80, build with M80:
-;   M80 =XMHB
-;   L80 XMHB,XMHB/N/X/E
-;
-	.Z80
-	ASEG
-;
-NO	EQU	0
-YES	EQU	NOT NO
-;
-ERRDET	EQU	NO		; detect parity/framing/overrun errs
-;
-BASE	EQU	100H		; start of cp/m normal program area
-;
-;=======================================================================
-;
-; Jump table: The jump table must be in exactly the same sequence as the
-; one in XMODEM.  Note the ORG of 103H - This jump table has no jump to
-; 'BEGIN'.
-;
-	ORG	BASE + 3	;start after 'JMP BEGIN'
-;
-	JP	CONOUT		;must be 00000h if not used, see below
-	JP	MINIT		;initialization routine (if needed)
-	JP	UNINIT		;undo whatever 'MINIT' did (or return)
-JPTBL:
-	JP	SENDR		;send character (via pop psw)
-	JP	CAROK		;test for carrier
-	JP	MDIN		;receive data byte
-	JP	GETCHR		;get character from modem
-	JP	RCVRDY		;check receive ready
-	JP	SNDRDY		;check send ready
-	JP	SPEED		;get speed value for file transfer time
-	JP	EXTRA1		;extra for custom routine
-	JP	EXTRA2		;extra for custom routine
-	JP	EXTRA3		;extra for custom routine
-;
-;-----------------------------------------------------------------------
-;
-; Output character to console
-;
-CONOUT	EQU	0		; not used
-;
-;-----------------------------------------------------------------------
-;
-; Initialize modem
-;
-; This procedure has been usurped to dynamically detect the type
-; of system we are running on and install the *real* jump table
-; entries as appropriate.
-;
-MINIT:
-	; Get system type
-	LD	D,2
-	LD	E,2
-	MLT	DE
-	BIT	2,E		; bit 2 wil be set if mlt happend
-	LD	HL,U_JPTBL	; assume Z80 (UART)
-	LD	A,10		; assume 10MHz CPU in case of Z80
-	JR	Z,MINIT2	; yes, Z80, do vector copy
-	LD	HL,A_JPTBL	; otherwise Z180 (ASCI)
-	LD	A,20		; assume 20MHz CPU in case of Z180
-;
-MINIT2:
-	; Copy real vectors into active jump table
-	LD	DE,JPTBL
-	LD	BC,7 * 3	; copy 7 3-byte entries
-	LDIR
-;
-	; Check for UNA (UBIOS)
-	LD	A,(0FFFDH)	; fixed location of UNA API vector
-	CP	0C3H		; jp instruction?
-	JR	NZ,MINIT3	; if not, not UNA
-	LD	HL,(0FFFEH)	; get jp address
-	LD	A,(HL)		; get byte at target address
-	CP	0FDH		; first byte of UNA push ix instruction
-	JR	NZ,MINIT3	; if not, not UNA
-	INC	HL		; point to next byte
-	LD	A,(HL)		; get next byte
-	CP	0E5H		; second byte of UNA push ix instruction
-	JR	NZ,MINIT3	; if not, not UNA
-;
-	; Get CPU speed from UNA
-	LD	C,0F8H		; UNA BIOS Get PHI function
-	RST	08		; Returns speed in Hz in DE:HL
-	LD	A,E		; Hack to get approx speed in MHz
-	SRL	A		; ... by dividing by 1,048,576
-	SRL	A		; ...
-	SRL	A		; ...
-	SRL	A		; ...
-	INC	A		; Fix up for value truncation
-	RET			; done
-;
-MINIT3:
-	; Not UNA, use HBIOS for CPU speed lookup
-	LD	B,0F8H		; HBIOS SYSGET function 0xF8
-	LD	C,0F0H		; CPUINFO subfunction 0xF0
-	RST	08		; do it, L := CPU speed in MHz
-	LD	A,L		; move it to A
-	RET			; done
-;
-;-----------------------------------------------------------------------
-;
-; Uninitialize modem
-;
-UNINIT:
-	RET			; not initialized, so no 'UN-INITIALIZE'
-;
-;-----------------------------------------------------------------------
-;
-; The following are all dummy routines that are unused because MINIT
-; dynamically installs the real jump table.
-;
-SENDR:
-CAROK:
-MDIN:
-GETCHR:
-RCVRDY:
-SNDRDY:
-SPEED:
-EXTRA1:
-EXTRA2:
-EXTRA3:
-	RET
-;
-;=======================================================================
-;=======================================================================
-;
-; Standard RBC Projects 8250-like UART port @ 68H
-;
-; Will be used for all RBC Z80 systems.
-;
-;=======================================================================
-;=======================================================================
-;
-; UART port constants
-;
-U_BASE	EQU	68H		; UART base port
-U_DATP	EQU	U_BASE + 0	; data in port
-U_DATO	EQU	U_BASE + 0	; data out port
-U_CTLP	EQU	U_BASE + 5	; control/status port
-U_SNDB	EQU	20H		; bit to test for send ready
-U_SNDR	EQU	20H		; value when ready to send
-U_RCVB	EQU	01H		; bit to test for receive ready
-U_RCVR	EQU	01H		; value when ready to receive
-U_PARE	EQU	04H		; bit for parity error
-U_OVRE	EQU	02H		; bit for overrun error
-U_FRME	EQU	08H		; bit for framing error
-;
-; Following jump table is dynamically patched into real jump
-; table at program startup.  See MINIT above.  Note that only a
-; subset of the jump table is overlaid (SENDR to SPEED).
-;
-U_JPTBL:
-	JP	U_SENDR		; send character (via pop psw)
-	JP	U_CAROK		; test for carrier
-	JP	U_MDIN		; receive data byte
-	JP	U_GETCHR	; get character from modem
-	JP	U_RCVRDY	; check receive ready
-	JP	U_SNDRDY	; check send ready
-	JP	U_SPEED		; get speed value for file transfer time
-;
-;-----------------------------------------------------------------------
-;
-; Send character on top of stack
-;
-U_SENDR:
-	POP	AF		; get character to send from stack
-	OUT	(U_DATO),A	; send to port
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Test and rep;ort carrier status, Z set if carrier present
-;
-U_CAROK:
-	XOR	A		; not used, always indicate present
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Get a character (assume character ready has already been tested)
-;
-U_MDIN:
-U_GETCHR:
-	IN	A,(U_DATP)	; read character from port
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Test for character ready to receive, Z = ready
-; Error code returned in A register
-; *** Error code does not seem to be used ***
-;
-U_RCVRDY:
-	IN	A,(U_CTLP)	; get modem status
-;
-	 IF ERRDET
-;
-	; With error detection (slower)
-	PUSH	BC		; save scratch register
-	PUSH	AF		; save full status on stack
-	AND	U_FRME | U_OVRE | U_PARE ; isolate line err bits
-	LD	B,A		; save err status in B
-	POP	AF		; get full status back
-	AND	U_RCVB		; isolate ready bit
-	CP	U_RCVR		; test it (set flags)
-	LD	A,B		; get the error code back
-	POP	BC		; restore scratch register
-;
-	 ELSE
-;
-	; No error detection (faster)
-	AND	U_RCVB		; isolate ready bit
-	CP	U_RCVR		; test it (set flags)
-	LD	A,0		; report no line errors
-;
-	 ENDIF
-;
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Test for ready to send a character, Z = ready
-;
-U_SNDRDY:
-	IN	A,(U_CTLP)	; get status
-	AND	U_SNDB		; isolate transmit ready bit
-	CP	U_SNDR		; test for ready value
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Report baud rate (index into SPTBL returned in regsiter A)
-;
-U_SPEED:
-	LD	A,8		; arbitrarily return 9600 baud
-	RET
-;
-;=======================================================================
-;=======================================================================
-;
-; Standard RBC Projects Z180 primary ASCI port
-;
-; Will be used for all RBC Z180 systems.
-;
-;=======================================================================
-;=======================================================================
-;
-; ASCI port constants
-;
-A_DATP	EQU	48H		;Z180 TSR - ASCI receive data port
-A_DATO	EQU	46H		;Z180 TDR - ASCI transmit data port
-A_CTLP	EQU	44H		;Z180 STAT - ASCI status port
-A_CTL2	EQU	40H		;Z180 CNTLA - ASCI control port
-A_SNDB	EQU	02H		;Z180 STAT:TDRE - xmit data reg empty bit
-A_SNDR	EQU	02H		;Z180 STAT:TDRE - xmit data reg empty value
-A_RCVB	EQU	80H		;Z180 STAT:RDRF - rcv data reg full bit
-A_RCVR	EQU	80H		;Z180 STAT:RDRF - rcv data reg full value
-A_PARE	EQU	20H		;Z180 STAT:PE - parity error bit
-A_OVRE	EQU	40H		;Z180 STAT:OVRN - overrun error bit
-A_FRME	EQU	10H		;Z180 STAT:FE - framing error bit
-;
-; Following jump table is dynamically patched over initial jump
-; table at program startup.  See MINIT above.  Note that only a
-; subset of the jump table is overlaid (SENDR to SPEED).
-;
-A_JPTBL:
-	JP	A_SENDR		;send character (via pop psw)
-	JP	A_CAROK		;test for carrier
-	JP	A_MDIN		;receive data byte
-	JP	A_GETCHR	;get character from modem
-	JP	A_RCVRDY	;check receive ready
-	JP	A_SNDRDY	;check send ready
-	JP	A_SPEED		;get speed value for file transfer time
-;
-;-----------------------------------------------------------------------
-;
-; Send character on top of stack
-;
-A_SENDR:
-	POP	AF		; get character to send from stack
-	OUT0	(A_DATO),A	; send to port
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Test and rep;ort carrier status, Z set if carrier present
-;
-A_CAROK:
-	XOR	A		; not used, always indicate present
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Get a character (assume character ready has already been tested)
-;
-A_MDIN:
-A_GETCHR:
-	IN0	A,(A_DATP)	; read character from port
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Test for character ready to receive, Z = ready
-; Error code returned in A register
-; *** Error code does not seem to be used ***
-;
-A_RCVRDY:
-	IN0	A,(A_CTLP)	; get modem status
-	PUSH	BC		; save scratch register
-	PUSH	AF		; save full status on stack
-	AND	A_FRME | A_OVRE | A_PARE ; isolate line err bits
-	LD	B,A		; save err status in B
-	
-	; Z180 ASCI ports will stall if there are errors.
-	; Error bits are NOT cleared by merely reading
-	; the status register.  Below, bit 3 of ASCI
-	; control register is written with a zero to 
-	; clear error(s) if needed.
-	JP	Z,A_RCVRDY2	; if no errs, continue
-	IN0	A,(A_CTL2)	; get current control register
-	AND	0F7H		; force err reset bit to zero
-	OUT0	(A_CTL2),A	; write control register
-
-A_RCVRDY2:
-	POP	AF		; get full status back
-	AND	A_RCVB		; isolate ready bit
-	CP	A_RCVR		; test it (set flags)
-	LD	A,B		; get the error code back
-	POP	BC		; restore scratch register
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Test for ready to send a character, Z = ready
-;
-A_SNDRDY:
-	IN	A,(A_CTLP)	; get status
-	AND	A_SNDB		; isolate transmit ready bit
-	CP	A_SNDR		; test for ready value
-	RET
-;
-;-----------------------------------------------------------------------
-;
-; Report baud rate (index into SPTBL returned in regsiter A)
-;
-A_SPEED:
-	LD	A,8		; arbitrarily return 9600 baud
-	RET
-;
-	END