Bump Version

Use a global flag to indicate if interrupts have been enabled during the boot process.  Drivers that operate in the pre-interrupt phase can use this to manage interrupt disable bracketing.

This allows restoring the location of interrupt enable in the boot process to it's proper location.

.github/pull_request_template.md

@@ -7,5 +7,7 @@ BEFORE YOU CREATE A PULL REQUEST:
 
 Thank you for contributing to RomWBW!  I will review your pull request as soon as possible.
 
+-Wayne
+
 DELETE EVERYTHING IN THIS COMMENT BLOCK AND REPLACE WITH YOUR COMMENTS
 -->

.github/workflows/release.yml

@@ -31,6 +31,8 @@ jobs:
           echo "Tag: ${{github.ref_name}}"
           if grep -q "dev" <<< "${{github.ref_name}}"; then
             TITLE="RomWBW Development Snapshot"
+          elif grep -q "beta" <<< "${{github.ref_name}}"; then
+            TITLE="RomWBW Beta Release"
           elif grep -q "pre" <<< "${{github.ref_name}}"; then
             TITLE="RomWBW Prerelease"
           elif grep -q "rc" <<< "${{github.ref_name}}"; then
@@ -50,6 +52,21 @@ jobs:
           title: "${{env.TITLE}} ${{github.ref_name}}"
           files: |
             RomWBW-${{github.ref_name}}-Package.zip
+
+      - name: Build Docs
+        run: |
+          export TZ='America/Los_Angeles'
+          sudo apt-get install gpp pandoc
+          pip install mkdocs
+          make -C Source/Doc deploy_mkdocs
+          mkdocs build -f Source/Doc/mkdocs.yml
+
+      - name: Deploy Docs
+        uses: peaceiris/actions-gh-pages@v4
+#       if: github.ref == 'refs/heads/master'
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: Source/Doc/site
       
 #      - name: Upload Package Archive
 #        uses: AButler/upload-release-assets@v2.0.2

.gitignore

@@ -20,7 +20,7 @@
 
 Binary/**/*.mym
 Binary/**/*.pt3
-!Binary/CPNET/NetBoot/cpnos-wbw.sys
+!Binary/CPNET/NetBoot/*/cpnos.sys
 
 Source/**/eeprom
 Source/Apps/Assign.com
@@ -77,7 +77,6 @@ Tools/unix/zx/zx
 
 !Source/ver.lib
 !Source/Apps/FAT/FAT.COM
-!Source/Apps/copysl/copysl.com
 !Source/Apps/ZMP/zmpx.com
 !Source/Apps/ZMD/zmdsubs.rel
 !Source/Apps/Test/vdctest/font.asm
@@ -98,6 +97,7 @@ Tools/unix/zx/zx
 !Source/ZSDOS/*.[Cc][Oo][Mm]
 !Source/ZRC/*.bin
 !Source/ZRC512/*.bin
+!Source/EZ512/*.bin
 !Source/Z1RCC/*.bin
 !Source/ZZRCC/*.bin
 !Source/FZ80/*.bin
@@ -120,11 +120,14 @@ Binary/Apps/Tunes/inchina.vgm
 Binary/Apps/Tunes/shirakaw.vgm
 Binary/Apps/Tunes/startdem.vgm
 Binary/Apps/Tunes/wonder01.vgm
+Binary/Apps/copysl.doc
 Binary/Apps/fdu.doc
 Binary/Apps/zmconfig.ovr
 Binary/Apps/zminit.ovr
 Binary/Apps/zmp.doc
 Binary/Apps/zmp.hlp
+Binary/Apps/zmp.cfg
+Binary/Apps/zmp.fon
 Binary/Apps/zmterm.ovr
 Binary/Apps/zmxfer.ovr
 Binary/CPM3/bdos3.spr
@@ -143,8 +146,7 @@ Binary/CPNET/cpn12ser.lbr
 Binary/CPNET/cpn3duo.lbr
 Binary/CPNET/cpn3mt.lbr
 Binary/CPNET/cpn3ser.lbr
-Binary/RCEZ80_std.upd
-Binary/RCZ80_std.upd
+Binary/*.upd
 Binary/ZPM3/bnkbdos3.spr
 Binary/ZPM3/bnkbios3.spr
 Binary/ZPM3/gencpm.dat
@@ -173,74 +175,17 @@ Source/Fonts/fontcgau.asm
 Source/Fonts/fontvgarcc.asm
 Source/Fonts/fontvgarcc.bin
 Source/Fonts/fontvgarcu.asm
-Source/HBIOS/RCEZ80_std.upd
-Source/HBIOS/RCZ80_std.upd
+Source/HBIOS/*.upd
 Source/HBIOS/build_env.cmd
 Source/HBIOS/hbios_env.sh
+Source/HBIOS/netboot.mod
+Source/Images/*.cat
+Source/Images/*.img
 Source/Images/blank144
 Source/Images/blankhd1k
 Source/Images/blankhd512
-Source/Images/fd144_aztecc.img
-Source/Images/fd144_bascomp.img
-Source/Images/fd144_cowgol.img
-Source/Images/fd144_cpm22.img
-Source/Images/fd144_cpm3.img
-Source/Images/fd144_fortran.img
-Source/Images/fd144_games.img
-Source/Images/fd144_hitechc.img
-Source/Images/fd144_nzcom.img
-Source/Images/fd144_qpm.img
-Source/Images/fd144_tpascal.img
-Source/Images/fd144_ws4.img
-Source/Images/fd144_z80asm.img
-Source/Images/fd144_zpm3.img
-Source/Images/fd144_zsdos.img
-Source/Images/hd1k_aztecc.img
-Source/Images/hd1k_bascomp.img
-Source/Images/hd1k_blank.img
-Source/Images/hd1k_bp.img
-Source/Images/hd1k_combo.img
-Source/Images/hd1k_cowgol.img
-Source/Images/hd1k_cpm22.img
-Source/Images/hd1k_cpm3.img
-Source/Images/hd1k_fortran.img
-Source/Images/hd1k_games.img
-Source/Images/hd1k_hitechc.img
-Source/Images/hd1k_nzcom.img
-Source/Images/hd1k_qpm.img
-Source/Images/hd1k_tpascal.img
-Source/Images/hd1k_ws4.img
-Source/Images/hd1k_z80asm.img
-Source/Images/hd1k_zpm3.img
-Source/Images/hd1k_zsdos.img
-Source/Images/hd512_aztecc.img
-Source/Images/hd512_bascomp.img
-Source/Images/hd512_blank.img
-Source/Images/hd512_combo.img
-Source/Images/hd512_cowgol.img
-Source/Images/hd512_cpm22.img
-Source/Images/hd512_cpm3.img
-Source/Images/hd512_dos65.img
-Source/Images/hd512_fortran.img
-Source/Images/hd512_games.img
-Source/Images/hd512_hitechc.img
-Source/Images/hd512_nzcom.img
-Source/Images/hd512_qpm.img
-Source/Images/hd512_tpascal.img
-Source/Images/hd512_ws4.img
-Source/Images/hd512_z80asm.img
-Source/Images/hd512_zpm3.img
-Source/Images/hd512_zsdos.img
-Source/RomDsk/rom0_una.dat
-Source/RomDsk/rom0_wbw.dat
-Source/RomDsk/rom128_una.dat
-Source/RomDsk/rom128_wbw.dat
-Source/RomDsk/rom256_una.dat
-Source/RomDsk/rom256_wbw.dat
-Source/RomDsk/rom384_una.dat
-Source/RomDsk/rom384_wbw.dat
-Source/RomDsk/rom896_una.dat
-Source/RomDsk/rom896_wbw.dat
+Source/RomDsk/*.cat
+Source/RomDsk/*.dat
 Source/ZCPR-DJ/zcprdemo.com
 Source/ZPM3/autotog.com
 Source/ZPM3/clrhist.com

Binary/Apps/Clean.cmd

@@ -9,5 +9,8 @@ if exist Tunes\*.pt? del Tunes\*.pt?
 if exist Tunes\*.mym del Tunes\*.mym
 if exist Tunes\*.vgm del Tunes\*.vgm
 if exist bbcbasic.txt del bbcbasic.txt
+if exist *.cfg del *.cfg
+if exist *.fon del *.fon
 
 pushd Test && call Clean || exit /b 1 & popd
+pushd ZDE && call Clean || exit /b 1 & popd

Binary/Apps/Makefile

@@ -1,6 +1,6 @@
 TOOLS = ../../Tools
 MOREDIFF := $(shell $(TOOLS)/unix/casefn.sh *.com)
-SUBDIRS = Test
+SUBDIRS = Test ZDE
 
 include $(TOOLS)/Makefile.inc
 
@@ -8,4 +8,4 @@ all::
 	mkdir -p Tunes
 
 clean::
-	@rm -f *.bin *.com *.img *.rom *.pdf *.log *.eeprom *.ovr *.hlp *.doc *.COM *.BIN Tunes/*.mym Tunes/*.pt? Tunes/*.vgm bbcbasic.txt
+	@rm -f *.bin *.com *.img *.rom *.pdf *.log *.eeprom *.ovr *.hlp *.doc *.COM *.BIN Tunes/*.mym Tunes/*.pt? Tunes/*.vgm bbcbasic.txt *.cfg *.fon

Binary/Apps/ZDE/Clean.cmd

@@ -0,0 +1,4 @@
+@echo off
+setlocal
+
+if exist *.com del *.com

Binary/Apps/ZDE/Makefile

@@ -0,0 +1,6 @@
+TOOLS = ../../../Tools
+
+include $(TOOLS)/Makefile.inc
+
+clean::
+	@rm -f *.com

Binary/Apps/ZDE/ReadMe.txt

@@ -0,0 +1,10 @@
+***********************************************************************
+***                                                                 ***
+***                          R o m W B W                            ***
+***                                                                 ***
+***                    Z80/Z180 System Software                     ***
+***                                                                 ***
+***********************************************************************
+
+This directory contains the ZDE executable binaries.  They are
+in their original, unconfigured state.

Doc/CPM/ReadMe.txt

@@ -68,3 +68,11 @@ ZSDOS is the DOS portion of Z-System.  This is the manual for ZSDOS
 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.
+
+ZPM3 ("ZPM3.txt")
+-----------------
+
+A Z80 coded CP/M 3.0 compatible BDOS replacement with ZCPR support.
+This minimal documentation is all that is provided with ZPM3.
+
+-- WBW 8:38 AM 6/6/2025

Doc/CPM/ZPM3.txt

@@ -0,0 +1,483 @@
+
+                    Z P M 3   by Simeon Cran
+                    ========================
+
+          A Z80 coded CP/M 3.0 compatible BDOS replacement.
+
+               The first public release: 27/3/92
+                    This document dated: 16/6/92
+
+          Distributed at: Z-Node 62 (Perth, Western Australia)
+                     V21,V22,V22bis 09 450 0200
+
+
+WELCOME TO ZPM3
+~~~~~~~~~~~~~~~
+Welcome to the best CP/M compatible operating system for Z80 
+based computers with banked memory. The best? Yes, we believe so. 
+CP/M 3.0 has had bad press, but the fact is that it is faster 
+than CP/M 2.2 ever was, and it offered more integrated 
+facilities. Perhaps it was all the Z80 replacement BDOSes for 
+CP/M 2.2 which stole the limelight from CP/M 3.0, or was it just 
+that few computers had the required banked memory?
+
+Whatever the reason for CP/M 3.0's lack of success in the 
+marketplace, there are still plenty of users who will stand by 
+its wonderful facilities and speed. For those users ZPM3 provides 
+the long awaited Z80 coded update.
+
+ZPM3 offers all the good things that CP/M 3.0 does, and then it 
+offers more. Because ZPM3 is written in Z80 code rather than the 
+8080 code of CP/M 3.0, it can do everything that CP/M 3.0 does, 
+but in much less space. With the extra space recovered, ZPM3 
+packs in a number of new facilities. Yet the whole package fits 
+in exactly the same space as CP/M 3.0 so you can directly replace 
+your old CP/M 3.0 BDOS with ZPM3 without a worry.
+
+ZPM3 is also fast. Faster, in fact, than CP/M 3.0. This is 
+possible because the rich Z80 instruction set allows many 
+algorithms to be implemented more efficiently. In addition, the 
+extra space available in ZPM3 has been put to use to further 
+optimise the code. Lots of small optimisations smooth the 
+execution flow, so ZPM3 becomes the fastest operating system on 
+most banked CP/M computers.
+
+
+THE FEATURES
+~~~~~~~~~~~~
+ZPM3, in addition to complete CP/M 3.0 compatibility, offers the 
+following features:
+
+
+Random Read Bug fixed.
+++++++++++++++++++++++
+Maybe you didn't know, but CP/M 3.0 has a bug. It affects random 
+reads under very specific circumstances, and can result in a 
+program thinking that you don't have some pieces of data in a 
+file when in fact you do. The bug would occur very, very rarely, 
+but it is real. ZPM3 finally squashes it.
+
+
+Protected SCB User code
++++++++++++++++++++++++
+The System Control Block of CP/M 3.0 was a revolution at the 
+time. ZCPR has a system environment and most other operating 
+systems have other similar structures, but the SCB of CP/M 3.0 
+was one of the very first.
+
+Unfortunately, Digital Research never properly documented it, and 
+some programmers found things out about it that weren't quite 
+true and started programming accordingly. As well, because it is 
+available in the TPA bank, runaway programs can overwrite it 
+causing problems.
+
+Mostly though, the SCB will survive, or at least any problems 
+will be so obvious that the user will realise that a crash has 
+occurred and will reboot. A real problem exists with the CP/M 3.0 
+code however when the user value is written over with a value 
+above 15. Many programs now directly write to this byte, and if 
+they put a value in that is above 15, all sorts of havoc can 
+happen with the disk system. Actually, CP/M 3.0 will handle user 
+areas above 15 with this method, and all seems ok until the 
+operating system mistakes one of these directory entries as an 
+XFCB. Simply put, user areas above 15 must not be used with CP/M 
+3.0.
+
+ZPM3 has code which prevents these problems, making the system 
+even more stable.
+
+
+Obsoleted Trap system.
+++++++++++++++++++++++
+One of the problems of the banked operating system was that it 
+was possible to redirect the BIOS to code below common memory, in 
+which case the banked BDOS could not access it. One solution is 
+to call all BIOS code from common memory, but this involves a 
+bank switch for every BIOS call, and this slows things down 
+considerably.
+
+CP/M 3.0 got around the problem by providing special code just 
+below the SCB. If you redirected the BIOS, you also had to change 
+this code which caused a bank switch when your new BIOS routine 
+was called. When you removed the redirection, you also had to 
+restore the special code.
+
+This system has major drawbacks. For a start, if you redirect the 
+BIOS, then another program redirects your redirection, then you 
+remove your first redirection (along with the special code), the 
+bank switch won't happen for the second redirection and the 
+system will crash.
+
+If a CP/M 2.2 program tried to do the redirection, it would know 
+nothing about CP/M 3.0 and would not adjust the special code, so 
+a crash would result in that case too.
+
+The special code was called the "Trap System" as it was meant to 
+trap redirection (as long as you set the trap). ZPM3 has 
+eliminated the need for the traps. They are still there, and 
+programs can still fiddle with them, but it doesn't matter how 
+they are set, they are ignored. There is simply no need for them 
+anymore. And this has been achieved without a performance 
+penalty. In fact, in the case of a program which sets the traps 
+but forgets to restore them, performance is now much better.
+
+
+Semi-Permanent Read Only status for drives.
++++++++++++++++++++++++++++++++++++++++++++
+In recent years, a trend in CP/M 2.2 is to make drives which have 
+been set read only to remain that way until explicitly changed by 
+function 37. ZPM3 now adopts this logic. Previously a control-C 
+would return a read only drive to read write. The advantage is 
+that a program can now make a drive read only for a session and 
+know that it will stay that way.
+
+
+ZCPR compatible function 152
+++++++++++++++++++++++++++++
+Function 152 is the CP/M 3.0 parser. It was a great innovation at 
+the time as parsing is one of the more tedious aspects of 
+programming for CP/M. Unfortunately, almost as soon as it 
+appeared, it was made obsolete by the fact that it didn't handle 
+references to user number (DU references). A line such as 
+A:FILE.TYP would be correctly parsed, but A3:FILE.TYP would not. 
+CP/M 3.0 programs would often parse the drive and user 
+separately, then give function 152 the line without the DU: 
+reference. All this extra work should not have been necessary if 
+CP/M 3.0 had included user number parsing.
+
+ZPM3 parses the user number, and goes even further by handling 
+named directories for ZCPR. This is possible as long as you set a 
+special word in the SCB which tells ZPM3 where to find the ZCPR 
+system environment descriptor. ZCCP, a companion CCP for ZPM3, 
+handles this automatically, but for Z3PLUS users, a special 
+utility is available which automatically sets this word.
+
+The result is that CP/M 3.0 programs will not balk at DU: 
+references and ZPM3 aware programs can use the full DU: and DIR: 
+facilities of function 152. It has also made the brilliant ZCCP 
+code possible.
+
+
+New Functions 54 and 55
++++++++++++++++++++++++
+Datestamps in CP/M 3.0 are wonderful, but difficult to 
+manipulate. Two new functions make them easier to handle and at 
+the same time give compatibility to Z80DOS aware programs.
+
+Function 54 (Get Stamp) returns a Z80DOS compatible datestamp. 
+Any program (such as many directory programs) which recognise the 
+Z80DOS standard can make use of function 54. There is only one 
+slight difference between Z80DOS datestamps and ZPM3's which you 
+should be aware of. Z80DOS will return a correct datestamp after 
+any successful open or search of any extent. ZPM3 can only return 
+a correct datestamp after a successful open or search of the 
+first extent of the file. This is because CP/M 3.0 datestamps are 
+only saved for the first extents of each file, in order to 
+provide the highest performance.
+
+Even more interesting is Function 55 (Use Stamp) which provides a 
+mechanism for changing datestamps on files. Trying to do this 
+with CP/M 3.0 was virtually impossible because it involved direct 
+sector writes. With Function 55 you can simply set the stamp and 
+then write.
+
+
+Wheel protected files
++++++++++++++++++++++
+If you are using a ZCPR system (ZCCP or Z3PLUS), ZPM3 has access 
+to the wheel byte and supports wheel protected files. Such files 
+act normally if the wheel is set (signifying a priveleged user), 
+but if the wheel is not set, the files can not be changed. This 
+is of most benefit to BBS systems. The implementation is 
+virtually the same as most current Z80 CP/M 2.2 compatible 
+BDOSes.
+
+
+Better error messages
++++++++++++++++++++++
+CP/M 3.0 introduced the best error messages that CP/M had ever 
+had. ZPM3 goes further. The main difference you will notice is 
+that the user number as well as the drive is shown in the error 
+message. This is invaluable in helping you identify which file 
+might have caused a problem.
+
+
+Function 10 history buffer and improved editing.
+++++++++++++++++++++++++++++++++++++++++++++++++
+Function 10 is used by the CCP to input command lines. Many other 
+programs use function 10 for input.
+
+CP/M 3.0 introduced a history buffer for function 10. You press 
+control-W and you were returned the last command. It is a great 
+facility, but because it only remembers one command it is rather 
+limited. There have been RSXes written which give a much larger 
+history buffer, but RSXes take up extra program memory so are 
+undesirable.
+
+ZPM3 gives a large (approximately 250 bytes) history buffer which 
+can store multiple commands. It also makes very intelligent use 
+of the buffer so that identical commands are not stored twice, 
+and commands of less than three characters are not stored. The 
+history buffer takes up no additional memory, and is always 
+available.
+
+For security, it is possible to clear the history buffer so that 
+other users can not see what commands you have used.
+
+The ZPM3 history buffer feature is so good, that for many users, 
+the ZPM3 upgrade is completely justified by it.
+
+As part of the history buffer system, ZPM3 also offers a facility 
+called Automatic Command Prompting. This can be disabled, or can 
+be made switchable from the keyboard. When it is on, ZPM3 tries 
+to fill in the rest of your command based on what commands you 
+used most recently. It is like magic, and can save you typing out 
+complicated commands many times. In effect, it looks through the 
+history buffer for you and finds the command it thinks you want. 
+As you keep typing, if it turns out that the command doesn't 
+match anymore, it will try to match another command, and if it 
+can't, it lets you make the command by yourself. This facility is 
+quite amazing to watch.
+
+And to integrate the history buffer and the automatic command 
+prompting, function 10 has the best command line editing you'll 
+find anywhere. Most of the control keys do something when you are 
+editing a function 10 line, and for the most part they mimic the 
+standard WordStar/NewWord/ZDE functions. You can jump to 
+different words in the command, delete individual words, delete 
+individual letters, insert letters, and a whole lot more.
+
+
+Here is a list of what the various control keys do for function 
+10:
+
+A    Move left one word
+B    Go to the beginning or end of the line
+C    Warm boot if at start of line, otherwise nothing
+D    Go right one character
+E    Go backwards one command in the history buffer
+F    Go right one word
+G    Delete current character
+H    Destructive backspace
+I
+J    Enter line
+K    Delete all to the right
+L
+M    Enter line
+N
+O
+P    Toggle printing
+Q    Toggle automatic command prompting (if enabled)
+R
+S    Go left one character
+T    Delete current word
+U    Add current line to history buffer
+V    Clear line and delete from history buffer
+W    Go forwards one command in the history buffer
+X    Delete all to the left
+Y    Clear the whole line
+Z
+
+
+CPMLDR.REL bug fixed.
++++++++++++++++++++++
+If you have ever tried to use the CPMLDR.REL code supplied with 
+CP/M 3.0 to load a CPM3.SYS file larger than 16k, you have 
+probably come across the CPMLDR.REL bug. The computer probably 
+crashed, and you were left wondering what you did wrong in your 
+bios.
+
+Well CPMLDR.REL has a bug. To solve this for you ZPM3 comes with 
+ZPM3LDR.REL which directly replaces CPMLDR.REL. It is also 
+somewhat better in that all the messages, and the fcb for loading 
+CPM3.SYS, are at the start of the file along with plenty of spare 
+room. As a result you can easily patch the signon and error 
+messages to say whatever you like and even change the FCB to load 
+a file called something other than CPM3.SYS.
+
+
+
+
+All About the Random Read Bug.
+==============================
+Never heard of it? Well it's there in CP/M 3.0. I spent a lot of 
+time trying to work out what it was and just why it was 
+happening, and if you are interested, here are the details.
+
+CP/M 3.0 uses the Record Count byte of an active FCB a little 
+differently from the way CP/M 2.2 does. It is mentioned in the 
+CP/M 3.0 manuals that the record count may contain numbers 
+greater than 128, but in such a case it implies that the record 
+count is really 128. CP/M 2.2 would not return record counts 
+greater than 128.
+
+The reason for the use of the record count in this way is to help 
+speed up some of the logic used to find records in a file. It 
+works very well for sequential access. When it comes to random 
+access, the system has some failings.
+
+The idea behind CP/M 3.0's unusual use of the record count is to 
+keep the record count of the last logical extent of the current 
+physical extent always in the Record Count byte. When accessing 
+extents before the last one, bit 7 of the byte is set. That way 
+it will always be at least 128 for logical extents before the 
+last (which CP/M 3.0 translates to mean equal to 128), and the 
+lower 7 bits are used as convenient storage for the record count 
+of the last logical extent. This is particularly convenient 
+because it means there is no need to go and read the directory 
+entry again when it comes time to read the last logical extent.
+
+I hope you have followed that! In sequential access, this scheme 
+is great. The problem occurs with random access. In this case it 
+is possible to access a logical extent which has no records in 
+it. This could be any logical extent past the last one. In such a 
+case the record count must be returned as 0 (which is correct). 
+If we then go back to a previous logical extent in the same 
+physical extent, CP/M 3.0 gets confused and assumes that there 
+must be 128 records in that extent because the one we just came 
+from had no records and we are now accessing an earlier extent. 
+You're probably well and truly lost by now!
+
+Anyhow, the assumption that CP/M 3.0 makes is quite wrong. The 
+record count ends up being set to 128, a read is allowed to go 
+ahead as if nothing was wrong, no error is returned, and the 
+record count remains incorrectly set until a different physical 
+extent is opened. The result could be chaos, but mostly it just 
+means that a program returns the wrong information.
+
+Remember, a logical extent is always 16k. A physical extent can 
+be a multiple of 16k and is all the data described by one 
+directory entry. If your system has physical extents which are 
+16k, you would never have the problem because a new physical 
+extent would be properly opened for every new logical extent that 
+was accessed.
+
+Typically though, a physical extent is 32k, so it holds 2 logical 
+extents. The problem won't arise until the file grows past the 
+32k mark in such a case. And when the file gets over 48k the 
+problem can't occur again until it gets over 64k... and so on. 
+Even then, it can only happen if reads are attempted to 
+particular extents in a particular order. So you shouldn't be too 
+surprised if the bug hasn't been too noticeable to you.
+
+ZPM3 squashes the bug once and for all by using the correct 
+logic. In the situation where the bug would normally occur, ZPM3 
+makes sure it gets the correct record count information, and the 
+reads return the correct record count every time.
+
+If you are interested in seeing a demonstration of the bug in 
+action (on CP/M 3.0) and comparing it with ZPM3, there is a file 
+floating around various bulletin boards which contains 
+demonstrations for the bug and an RSX to fix it. The RSX is a 
+less than perfect way of overcoming the bug, although it seems to 
+work. However, now that you have ZPM3, you don't need to worry.
+
+
+
+
+Other things you should know about ZPM3
+=======================================
+ZPM3 has worked on EVERY CP/M 3.0 system tried so far except one. 
+This is a Bondwell computer, and as yet it isn't clear why it 
+won't work. I will study the source code of its BIOS and come up 
+with a fix shortly.
+
+The MAKEDOS.COM utility is not perfect (as mentioned previously) 
+and it seems that nobody has managed to get it to work with the 
+Commodore C128 system. You must use the conventional method for 
+installing ZPM3 on such systems.
+
+If you have a computer that ZPM3 will not install on with MAKEDOS 
+and you do not have access to the files required to do a 
+conventional install, please contact me. I am interested in 
+making ZPM3 as universal as possible and will help you to install 
+it on your system.
+
+The ESCAPE key is ignored by function 10. There has been some 
+lively discussion about this but the decision is final: it stays 
+ignored. Remember what function 10 is for and you will understand 
+why I made it ignore the ESCAPE key. The argument against this 
+has been from people who control their terminals from the command 
+line. Apparently some people type in an escape sequence at the 
+command line (which CP/M 3.0 will not output correctly anyhow 
+(converting the escape character to ^[)) then press return to 
+have the CCP echo back the line including the escape character.
+
+Sorry folks, that is a KLUDGE in my books! Anybody using Z-System 
+would of course use an ALIAS and ECHO to do this properly, but 
+for those who will continue to complain that I have sacrificed 
+CP/M 3.0 compatibility I am now including ECHOTERM.COM to solve 
+your problems. Run it and whatever you type will be sent to the 
+terminal correctly after you press RETURN. Press RETURN twice to 
+exit the program.
+
+And a reminder that the ability to put control characters into 
+function 10 lines was always limited by the fact that some 
+control keys were used to edit the command line. CP/M 3.0 added 
+even more, and ZPM3 uses virtually all the control keys. The few 
+that aren't used are ignored, and this is in fact a FEATURE which 
+guarantees that unusable characters can't get into function 10 
+lines by accident.
+
+
+
+
+LEGALS and SUCH
+===============
+The ZPM3 package is supplied free of charge, on the condition 
+that you don't use it to make money. If you want to use it 
+commercially you must contact me to get the OK (and negotiate our 
+fee).
+
+If you find anyone (except myself) charging money for ZPM3, 
+please inform me!
+
+Nobody is making any guarantees about this software. None at all. 
+If it causes your house to burn down, or a divorce, or just a bad 
+day, this is unfortunate, regrettable, but there is nothing that 
+I can or will do about it. You have been warned.
+
+The ZPM3 package must only be distributed in the form that you 
+found it. Do not change or add anything. Don't even change it 
+into a different type of archive. Just leave it alone. However 
+you are free to distribute it to as many places and people that 
+you can. Just don't charge for it.
+
+
+
+If in using ZPM3 you find that it doesn't act as described, 
+please forward the details to me so that either the ZPM3 code or 
+the documentation can be changed. If you would like further 
+details, please forward your specific questions to me. SJC.
+
+
+
+
+As a service to all our ZPM3 fans, the latest version of the ZPM3 
+package can now be ordered. At this stage we can only supply IBM 
+formatted 3.5 inch 720k disks, however if you are keen enough 
+that shouldn't matter. ZPM3 remains free, however this service 
+will cost you $15 Australian (for the disk, copying, postage and 
+packing) to most places in the Western World (others by 
+arrangement).
+
+This is a good way to guarantee you have the latest version, and 
+to guarantee that your package has not been corrupted by some 
+unscrupulous person.
+
+When we fill your order, we will make sure to include the latest 
+demonstration copy of MYZ80 - the fastest and best Z80 emulator 
+for IBM AT (and better) compatibles. MYZ80 can run ZPM3 with 
+ease. It also handles ZCPR and CP/M 2.2. And yes, we do mean 
+FASTEST.
+
+Send your international money order to:
+
+          Software by Simeon
+          ZPM3 Package
+          2 Maytone Ave
+          Killara   NSW
+          Australia 2071
+
+Your order will be promptly filled.
+

Doc/ChangeLog.txt

@@ -1,3 +1,27 @@
+Version 3.6
+-----------
+- RDG: Added VDA driver for Xosera FPGA-based VDC
+- MGG: Added COBOL language disk image
+- WDC: Added config options to PCF driver
+- WBW: Enabled dynamic CPU speed update on LCD screen
+- WBW: Improve LPT driver boot messaging when not detected (per Robb Bates)
+- WBW: Correct DS1307 boot date/time display (per Tadeusz Pycio)
+- WBW: Add -DELAY option to TUNE app (per Robb Bates)
+- RDG: Add online documentation site
+- WBW: Added enhanced Hi-Tech C Compiler files from Ladislau Szilagyi
+- WBW: Added boundary check to ram/rom disk driver
+- WBW: Per Peter Onion, switch KERMIT default file xfer mode to binary
+
+Version 3.5.1
+-------------
+- WBW: Fix CPMLDR.SYS & ZPMLDR.SYS for SYSCOPY (reported by Guido Santer)
+- MAP: Enhanced SLR Tools Disk Image with Plus versions
+- WBW: Add missing BCLOAD file to MS BASIC Compiler Disk Image (reported by Marshall Gates)
+- WBW: Doc improvements (per Fraser and Rob Gowin)
+- WBW: Correct ZMP application crash
+- MAP: Contribution of the SLABEL.COM tool for displaying and changing slice labels.
+- MAP: Hardware documentation, Significant new content added with project links.
+
 Version 3.5
 -----------
 - M?F: Fix for hours display in HBRTC application
@@ -38,8 +62,8 @@ Version 3.5
 - WBW: Add CPU speed selection for HEATH platform to HBIOS
 - WBW: Add Warm/Cold reboot options to CPUSPD utility
 - D?N: Added support for eZ80 CPU
-- MAP: Contributed COPYSL utility
-- MAP: Added new HBIOS function EXT_SLICE (orginally SYSGET_DIOMED)
+- MAP: Contributed COPYSL utility that allows disk slices to be copied
+- MAP: Added new HBIOS function EXT_SLICE, extended disk slice info
 - MAP: ROMLDR now uses EXT_SLICE to get Slice Sector for boot
 - MAP: CBIOS now uses EXT_SLICE during drive selection
 - MAP: CPM3 Boot Loader, and BIOS (drive select) now use EXT_SLICE
@@ -47,7 +71,17 @@ Version 3.5
 - MAP: Significant improvement in Disk Catalog document
 - MAP: Added Disk Image for the Z3PLUS (Z-System for CP/M-Plus) os.
 - H?H: Fix XModem 12.3 WRERR to put CAN char in proper register to send.
-- MAP: Initial NVRAM configuration infrastructure, and boot device selection.
+- MAP: Added support for dynamic HBIOS config via (RTC) NVRAM
+- MAP: Added boot application to allow config of NVRAM options
+- MAP: Configuration of autoboot disk/app added to NVRAM config
+- WBW: Autoboot is now handled in separate prompt during RomWBW startup
+- MAP: Added additional tools (Linker/Disasembler) to the Z80ASM Disk Image
+- PMS: Support interrupt-driven PS2 Keyboard Interface
+- D?M: Added NetBoot support for Duodyne
+- WBW: Add options to TUNE/HBIOS to force detection of MSX and RC AY/YM standard PSG ports
+- MAP: Added /B=OPTIONS for automated drive assignment to ASSIGN.COM
+- WBW: Added TE Editor (Ladislau Szilagyi)
+- WBW: Refrech Cowgol disk image (Ladislau Szilagyi)
 
 Version 3.4
 -----------

Doc/ReadMe.txt

@@ -28,12 +28,13 @@ ChangeLog.txt
 Log of changes in RomWBW by version.
 
 
+RomWBW Introduction ("RomWBW Introduction.pdf")
 RomWBW User Guide ("RomWBW User Guide.pdf")
 RomWBW System Guide ("RomWBW System Guide.pdf")
 RomWBW Applications ("RomWBW Applications.pdf")
-RomWBW ROM Applications ("RomWBW ROM Applications.pdf")
 RomWBW Disk Catalog ("RomWBW Disk Catalog.pdf")
-RomWBW Errata ("RomWBW Errata.pdf")
+RomWBW Hardware ("RomWBW Hardware.pdf")
+
 -------------------------------------------------------
 
 Documentation set for RomWBW.  The primary document is the
@@ -84,4 +85,4 @@ UCSD p-System Users Manual ("UCSD p-System Users Manual.pdf")
 Official user manual for p-System operating system included with
 RomWBW.
 
---WBW 5:18 PM 6/14/2023
+--WBW 8:37 AM 6/6/2025

RELEASE_NOTES.md

@@ -0,0 +1,116 @@
+# RomWBW Release Notes
+
+This file contains information useful to those upgrading to a new
+release of RomWBW.
+
+## All Versions
+
+- **Please** review the "Upgrading" Section of the RomWBW User Guide.
+
+- The RomWBW ROM and the RomWBW disk images are intended to be a
+  matched set.  After upgrading your ROM, it is important to update
+  the OS boot tracks of your disks as well as the RomWBW-specific
+  applications.  This is discussed in the "Upgrading" section of the
+  RomWBW User Guide.
+
+## Version 3.5.1
+
+This is a patch release of v3.5.
+
+### Fixes
+
+- Corrects an issue with the `CPMLDR.SYS` and `ZPMLDR.SYS` files that
+  caused `SYSCOPY` to fail when used with them.
+
+- Added missing `BCLOAD` file to the MS BASIC Compiler disk image.
+  
+### New Features
+
+- Added `SLABEL` application (Mark Pruden).
+
+- Variety of documentation improvements, especially an overhaul of
+  the Hardware Document (Mark Pruden).
+
+## Version 3.5
+
+### Upgrade Notes
+
+- RomWBW is now more strict with respect to hard disk partition
+  tables.  If your hard disk media was created using any of the
+  pre-built disk image files, this will **not** affect you.  Otherwise,
+  you may find you are unable to access slices beyond the first
+  slice.  If so, use `FDISK80` to reset the partition table on the
+  disk.  This will restore normal access to all slices.  **Only** do
+  this if you are having an issue.
+
+- For those building custom ROMs that are overriding `DEFSERCFG`, note 
+  that this setting has been moved to a `#DEFINE` instead of an equate 
+  (`.SET` or `.EQU`).  You will find this `#DEFINE` at the top of all
+  standard config files.  You will need to change your setting to a
+  `#DEFINE` at the top of your config file and remove any `.SET` or
+  `.EQU` lines for `DEFSERCFG`.
+
+- Combining config settings `AUTOCON` and `VDAEMU_SERKBD` causes issues
+  at the boot loader prompt.  So, all config files have been changed to
+  consistently enable `AUTOCON` and disable `VDAEMU_SERKBD` (`$FF`).  If
+  are want to use `VDAEMU_SERKBD`, you need to set it in your config
+  file as well as disabling AUTOCON.
+  
+### New Features
+
+- RC2014 Front Panel and LCD Screen support.
+
+- Console "takeover" support at Boot Loader prompt by pressing the
+  <space> key twice on an alternate console device.
+
+- Cowgol disk image based on the work of Ladislau Szilagyi.
+
+- TMS video is automatically reset after an OS warm boot which
+  allows OS to recover from applications that reprogram the TMS
+  video display controller.
+
+- Implemented "application" RAM banks that can be discovered via
+  the HBIOS API.
+
+- Documentation improvements (Mark Pruden), including:
+
+  - Reorganization into multiple directories.
+  - Improved Disk Management section in User Guide.
+  - Overhaul of Disk Catalog.
+  
+- Disk image for Z3PLUS (Mark Pruden).
+
+- `REBOOT` application added (Martin R).  Also, reboot capability
+  added to `CPUSPD` utility.
+
+- `COPYSL` slice copy application (Mark Pruden).
+
+- `SLABEL` slice label display/edit tool (Mark Pruden).
+
+- Improved disk slice management and protection (Mark Pruden).
+
+- Initial NVRAM configuration support (Mark Pruden).
+
+- Enhancements to ASSIGN command to automatically assign drives
+  (Mark Pruden).
+
+
+### New Hardware Support
+
+- NABU w/ RomWBW Option Board.
+
+- EF9345 video display controller driver (Laszlo Szolnoki).
+
+- Duodyne Disk I/O (CP/NET) and Media boards.
+
+- PS/2 keyboard interface on RCBus systems.
+
+- S100 FPGA-based Z80 including console, SD Cards, and RTC.
+
+- Support for 16C550-family UART support on additional platforms.
+
+- Genesis STD Bus Z180 platform (Doug Jackson).
+
+- Support for Dinoboard eZ80 CPU board provided by Dean Netherton.
+
+- Added interrupt support to PS/2 keyboard driver by Phil Summers.

ReadMe.md

@@ -1,17 +1,22 @@
 
 
-**RomWBW ReadMe** \
-Version 3.5 \
+
+
+
+
+**RomWBW Introduction** \
+Version 3.6 \
 Wayne Warthen  ([wwarthen@gmail.com](mailto:wwarthen@gmail.com)) \
-01 Dec 2024
+07 Jun 2025
 
 # Overview
 
 RomWBW software provides a complete, commercial quality implementation
 of CP/M (and workalike) operating systems and applications for modern
-Z80/180/280 retro-computing hardware systems. A wide variety of
-platforms are supported including those produced by these developer
-communities:
+Z80/180/280 retro-computing hardware systems.
+
+A wide variety of platforms are supported including those produced by
+these developer communities:
 
 - [RetroBrew Computers](https://www.retrobrewcomputers.org)
   (<https://www.retrobrewcomputers.org>)
@@ -23,47 +28,43 @@ communities:
 - [Small Computer Central](https://smallcomputercentral.com/)
   (<https://smallcomputercentral.com/>)
 
-A complete list of the currently supported platforms is found in the
-\[Installation\] section.
+A complete list of the currently supported platforms is found in [RomWBW
+Hardware](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20Hardware.pdf)
+.
 
-General features include:
+# Description
+
+## Primary Features
+
+By design, RomWBW isolates all of the hardware specific functions in the
+ROM chip itself. The ROM provides a hardware abstraction layer such that
+all of the operating systems and applications on a disk will run on any
+RomWBW-based system. To put it simply, you can take a disk (or CF/SD/USB
+Card) and move it between systems transparently.
+
+Supported hardware features of RomWBW include:
 
 - Z80 Family CPUs including Z80, Z180, and Z280
 - Banked memory services for several banking designs
 - Disk drivers for RAM, ROM, Floppy, IDE ATA/ATAPI, CF, SD, USB, Zip,
   Iomega
 - Serial drivers including UART (16550-like), ASCI, ACIA, SIO
-- Video drivers including TMS9918, SY6545, MOS8563, HD6445
+- Video drivers including TMS9918, SY6545, MOS8563, HD6445, Xosera
 - Keyboard (PS/2) drivers via VT8242 or PPI interfaces
 - Real time clock drivers including DS1302, BQ4845
-- OSes: CP/M 2.2, ZSDOS, CP/M 3, NZ-COM, ZPM3, QPM, p-System, and
-  FreeRTOS
+- Support for CP/NET networking using Wiznet, MT011 or Serial
 - Built-in VT-100 terminal emulation support
 
-RomWBW is distributed as both source code and pre-built ROM and disk
-images. Some of the provided software can be launched directly from the
-ROM firmware itself:
-
-- System Monitor
-- Operating Systems (CP/M 2.2, ZSDOS)
-- ROM BASIC (Nascom BASIC and Tasty BASIC)
-- ROM Forth
-
 A dynamic disk drive letter assignment mechanism allows mapping
 operating system drive letters to any available disk media.
 Additionally, mass storage devices (IDE Disk, CF Card, SD Card, etc.)
 support the use of multiple slices (up to 256 per device). Each slice
 contains a complete CP/M filesystem and can be mapped independently to
 any drive letter. This overcomes the inherent size limitations in legacy
-OSes and allows up to 2GB of accessible storage on a single device.
+OSes and allows up to 2GB of addressable storage on a single device,
+with up to 128MB accessible at any one time.
 
-The pre-built ROM firmware images are generally suitable for most users.
-However, it is also very easy to modify and build custom ROM images that
-fully tailor the firmware to your specific preferences. All tools
-required to build custom ROM firmware under Windows are included – no
-need to install assemblers, etc. The firmware can also be built using
-Linux or MacOS after confirming a few standard tools have been
-installed.
+## Included Software
 
 Multiple disk images are provided in the distribution. Most disk images
 contain a complete, bootable, ready-to-run implementation of a specific
@@ -72,37 +73,79 @@ with a full operating system implementation. If you use this disk image,
 you can easily pick whichever operating system you want to boot without
 changing media.
 
-By design, RomWBW isolates all of the hardware specific functions in the
-ROM chip itself. The ROM provides a hardware abstraction layer such that
-all of the operating systems and applications on a disk will run on any
-RomWBW-based system. To put it simply, you can take a disk (or CF/SD/USB
-Card) and move it between systems transparently.
+Some of the included software:
+
+- Operating Systems (CP/M 2.2, ZSDOS, NZ-COM, CP/M 3, ZPM3, Z3PLUS, QPM
+  )
+- Support for other operating systems, p-System, FreeRTOS, and FUZIX.
+- Programming Tools (Z80ASM, Turbo Pascal, Forth, Cowgol)
+- C Compiler’s including Aztec-C, and HI-TECH C
+- Microsoft Basic Compiler, and Microsoft Fortran
+- Some games such as Colossal Cave, Zork, etc
+- Wordstar Word processing software
+
+Some of the provided software can be launched directly from the ROM
+firmware itself:
+
+- System Monitor
+- Operating Systems (CP/M 2.2, ZSDOS)
+- ROM BASIC (Nascom BASIC and Tasty BASIC)
+- ROM Forth
 
 A tool is provided that allows you to access a FAT-12/16/32 filesystem.
 The FAT filesystem may be coresident on the same disk media as RomWBW
 slices or on stand-alone media. This makes exchanging files with modern
 OSes such as Windows, MacOS, and Linux very easy.
 
-# Acquiring RomWBW
+## ROM Distribution
 
 The [RomWBW Repository](https://github.com/wwarthen/RomWBW)
 (<https://github.com/wwarthen/RomWBW>) on GitHub is the official
-distribution location for all project source and documentation. The
-fully-built distribution releases are available on the [RomWBW Releases
-Page](https://github.com/wwarthen/RomWBW/releases)
-(<https://github.com/wwarthen/RomWBW/releases>) of the repository. On
-this page, you will normally see a Development Snapshot as well as
+distribution location for all project source and documentation.
+
+RomWBW is distributed as both source code and pre-built ROM and disk
+images.
+
+The pre-built ROM images distributed with RomWBW are based on the
+default system configurations as determined by the hardware
+provider/designer. The pre-built ROM firmware images are generally
+suitable for most users.
+
+The fully-built distribution releases are available on the [RomWBW
+Releases Page](https://github.com/wwarthen/RomWBW/releases)
+(<https://github.com/wwarthen/RomWBW/releases>) of the repository.
+
+On this page, you will normally see a Development Snapshot as well as
 recent stable releases. Unless you have a specific reason, I suggest you
-stick to the most recent stable release. Expand the “Assets” drop-down
-for the release you want to download, then select the asset named
-RomWBW-vX.X.X-Package.zip. The Package asset includes all pre-built ROM
-and Disk images as well as full source code. The other assets contain
-only source code and do not have the pre-built ROM or disk images.
+stick to the most recent stable release.
 
-All source code and distributions are maintained on GitHub. Code
-contributions are very welcome.
+The asset named RomWBW-vX.X.X-Package.zip includes all pre-built ROM and
+Disk images as well as full source code. The other assets contain only
+source code and do not have the pre-built ROM or disk images.
 
-# Installation & Operation
+#### Distribution Directory Layout
+
+The RomWBW distribution is a compressed zip archive file organized in a
+set of directories. Each of these directories has its own ReadMe.txt
+file describing the contents in detail. In summary, these directories
+are:
+
+| **Directory** | **Description** |
+|----|----|
+| **Binary** | The final output files of the build process are placed here. Most importantly, the ROM images with the file names ending in “.rom” and disk images ending in .img. |
+| **Doc** | Contains various detailed documentation, both RomWBW specifically as well as the operating systems and applications. |
+| **Source** | Contains the source code files used to build the software and ROM images. |
+| **Tools** | Contains the programs that are used by the build process or that may be useful in setting up your system. |
+
+#### Building from Source
+
+It is also very easy to modify and build custom ROM images that fully
+tailor the firmware to your specific preferences. All tools required to
+build custom ROM firmware under Windows are included – no need to
+install assemblers, etc. The firmware can also be built using Linux or
+MacOS after confirming a few standard tools have been installed.
+
+## Installation & Operation
 
 In general, installation of RomWBW on your platform is very simple. You
 just need to program your ROM with the correct ROM image from the RomWBW
@@ -113,21 +156,79 @@ functionality.
 Complete instructions for installation and operation of RomWBW are found
 in the [RomWBW User
 Guide](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20User%20Guide.pdf).
+It is also a good idea to review the [Release
+Notes](https://github.com/wwarthen/RomWBW/blob/master/RELEASE_NOTES.md)
+for helpful release-specific information.
 
 ## Documentation
 
-Documentation for RomWBW includes:
+There are several documents that form the core of the RomWBW
+documentation:
 
 - [RomWBW User
   Guide](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20User%20Guide.pdf)
-- [RomWBW System
-  Guide](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20System%20Guide.pdf)
+  is the main user guide for RomWBW, it covers the major topics of how
+  to install, manage and use RomWBW, and includes additional guidance to
+  the use of some of the operating systems supported by RomWBW
+
+- [RomWBW
+  Hardware](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20Hardware.pdf)
+  contains a description of all the hardware platforms, and devices
+  supported by RomWBW.
+
 - [RomWBW
   Applications](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20Applications.pdf)
-- [RomWBW
-  Errata](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20Errata.pdf)
+  is a reference for the ROM-hosted and OS-hosted applications created
+  or customized to enhance the operation of RomWBW.
 
-# Acknowledgments
+- [RomWBW Disk
+  Catalog](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20Disk%20Catalog.pdf)
+  is a reference for the contents of the disk images provided with
+  RomWBW, with a description of many of the files on each image
+
+- [RomWBW System
+  Guide](https://github.com/wwarthen/RomWBW/raw/master/Doc/RomWBW%20System%20Guide.pdf)
+  discusses much of the internal design and construction of RomWBW. It
+  includes a reference for the RomWBW HBIOS API functions.
+
+Each of the operating systems and ROM applications included with RomWBW
+are sophisticated tools in their own right. It is not reasonable to
+fully document their usage. However, you will find complete manuals in
+PDF format in the Doc directory of the distribution. The intention of
+this documentation is to describe the operation of RomWBW and the ways
+in which it enhances the operation of the included applications and
+operating systems.
+
+Since RomWBW is purely a software product for many different platforms,
+the documentation does **not** cover hardware construction,
+configuration, or troubleshooting – please see your hardware provider
+for this information.
+
+# Support
+
+## Getting Assistance
+
+The best way to get assistance with RomWBW or any aspect of the
+RetroBrew Computers projects is via one of the community forums:
+
+- [RetroBrew Computers Forum](https://www.retrobrewcomputers.org/forum/)
+- [RC2014 Google
+  Group](https://groups.google.com/forum/#!forum/rc2014-z80)
+- [retro-comp Google
+  Group](https://groups.google.com/forum/#!forum/retro-comp)
+
+Submission of issues and bugs are welcome at the [RomWBW GitHub
+Repository](https://github.com/wwarthen/RomWBW).
+
+Also feel free to email Wayne Warthen at <wwarthen@gmail.com>. I am
+happy to provide support adapting RomWBW to new or modified systems
+
+# Contributions
+
+All source code and distributions are maintained on GitHub.
+Contributions of all kinds to RomWBW are very welcome.
+
+## Acknowledgments
 
 I want to acknowledge that a great deal of the code and inspiration for
 RomWBW has been provided by or derived from the work of others in the
@@ -198,10 +299,15 @@ let me know if I missed you!
 - Martin R has provided substantial help reviewing and improving the
   User Guide and Applications documents.
 
-- Mark Pruden has also contributed a great deal of content to the Disk
-  Catalog, User Guide as well as contributing the disk image for the
-  Z3PLUS operating system, the COPYSL utility, and also implemented
-  feature for RomWBW configuration by NVRAM.
+- Mark Pruden has made a wide variety of contributions including:
+
+  - significant content in the Disk Catalog and User Guide
+  - creation of the Introduction and Hardware documents
+  - Z3PLUS operating system disk image
+  - COPYSL utility
+  - SLABEL utility
+  - a feature for RomWBW configuration by NVRAM
+  - the /B bulk mode of disk assignment to the ASSIGN utility
 
 - Jacques Pelletier has contributed the DS1501 RTC driver code.
 
@@ -234,10 +340,50 @@ let me know if I missed you!
 
 - Les Bird has contributed support for the NABU w/ Option Board
 
-Contributions of all kinds to RomWBW are very welcome.
+- Rob Gowin created an online documentation site via MkDocs, and
+  contributed a driver for the Xosera FPGA-based video controller.
+
+## Related Projects
+
+Outside of the hardware platforms adapted to RomWBW, there are a variety
+of projects that either target RomWBW specifically or provide a
+RomWBW-specific variation. These efforts are greatly appreciated and are
+listed below. Please contact the author if there are any other such
+projects that are not listed.
+
+#### Z88DK
+
+Z88DK is a software powerful development kit for Z80 computers
+supporting both C and assembly language. This kit now provides specific
+library support for RomWBW HBIOS. The Z88DK project is hosted at
+<https://github.com/z88dk/z88dk>.
+
+#### Paleo Editor
+
+Steve Garcia has created a Windows-hosted IDE that is tailored to
+development of RomWBW. The project can be found at
+<https://github.com/alloidian/PaleoEditor>.
+
+#### Z80 fig-FORTH
+
+Dimitri Theulings’ implementation of fig-FORTH for the Z80 has a
+RomWBW-specific variant. The project is hosted at
+<https://github.com/dimitrit/figforth>.
+
+#### Assembly Language Programming for the RC2014 Zed
+
+Bruce Hall has written a very nice document that describes how to
+develop assembly language applications on RomWBW. It begins with the
+setup and configuration of a new RC2014 Zed system running RomWBW. It
+describes not only generic CP/M application development, but also RomWBW
+HBIOS programming and bare metal programming. The latest copy of this
+document is hosted at [http://w8bh.net/Assembly for
+RC2014Z.pdf](http://w8bh.net/Assembly%20for%20RC2014Z.pdf).
 
 # Licensing
 
+## License Terms
+
 RomWBW 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
@@ -277,19 +423,3 @@ encouraged to submit their contributions via the RomWBW source code
 control system to ensure their contributions are clearly documented.
 
 All contributions to RomWBW are subject to this license.
-
-# Getting Assistance
-
-The best way to get assistance with RomWBW or any aspect of the
-RetroBrew Computers projects is via one of the community forums:
-
-- [RetroBrew Computers Forum](https://www.retrobrewcomputers.org/forum/)
-- [RC2014 Google
-  Group](https://groups.google.com/forum/#!forum/rc2014-z80)
-- [retro-comp Google
-  Group](https://groups.google.com/forum/#!forum/retro-comp)
-
-Submission of issues and bugs are welcome at the [RomWBW GitHub
-Repository](https://github.com/wwarthen/RomWBW).
-
-Also feel free to email Wayne Warthen at <wwarthen@gmail.com>.

ReadMe.txt

@@ -1,6 +1,9 @@
-RomWBW ReadMe
+RomWBW Introduction
 Wayne Warthen (wwarthen@gmail.com)
-01 Dec 2024
+07 Jun 2025
+
+
+
 
 
 
@@ -9,41 +12,45 @@ OVERVIEW
 
 RomWBW software provides a complete, commercial quality implementation
 of CP/M (and workalike) operating systems and applications for modern
-Z80/180/280 retro-computing hardware systems. A wide variety of
-platforms are supported including those produced by these developer
-communities:
+Z80/180/280 retro-computing hardware systems.
 
--   RetroBrew Computers (https://www.retrobrewcomputers.org)
--   RC2014 (https://rc2014.co.uk),
-    RC2014-Z80 (https://groups.google.com/g/rc2014-z80)
--   Retro Computing (https://groups.google.com/g/retro-comp)
--   Small Computer Central (https://smallcomputercentral.com/)
+A wide variety of platforms are supported including those produced by
+these developer communities:
 
-A complete list of the currently supported platforms is found in the
-[Installation] section.
+- RetroBrew Computers (https://www.retrobrewcomputers.org)
+- RC2014 (https://rc2014.co.uk),
+  RC2014-Z80 (https://groups.google.com/g/rc2014-z80)
+- Retro Computing (https://groups.google.com/g/retro-comp)
+- Small Computer Central (https://smallcomputercentral.com/)
 
-General features include:
+A complete list of the currently supported platforms is found in RomWBW
+Hardware .
 
--   Z80 Family CPUs including Z80, Z180, and Z280
--   Banked memory services for several banking designs
--   Disk drivers for RAM, ROM, Floppy, IDE ATA/ATAPI, CF, SD, USB, Zip,
-    Iomega
--   Serial drivers including UART (16550-like), ASCI, ACIA, SIO
--   Video drivers including TMS9918, SY6545, MOS8563, HD6445
--   Keyboard (PS/2) drivers via VT8242 or PPI interfaces
--   Real time clock drivers including DS1302, BQ4845
--   OSes: CP/M 2.2, ZSDOS, CP/M 3, NZ-COM, ZPM3, QPM, p-System, and
-    FreeRTOS
--   Built-in VT-100 terminal emulation support
 
-RomWBW is distributed as both source code and pre-built ROM and disk
-images. Some of the provided software can be launched directly from the
-ROM firmware itself:
 
--   System Monitor
--   Operating Systems (CP/M 2.2, ZSDOS)
--   ROM BASIC (Nascom BASIC and Tasty BASIC)
--   ROM Forth
+DESCRIPTION
+
+
+Primary Features
+
+By design, RomWBW isolates all of the hardware specific functions in the
+ROM chip itself. The ROM provides a hardware abstraction layer such that
+all of the operating systems and applications on a disk will run on any
+RomWBW-based system. To put it simply, you can take a disk (or CF/SD/USB
+Card) and move it between systems transparently.
+
+Supported hardware features of RomWBW include:
+
+- Z80 Family CPUs including Z80, Z180, and Z280
+- Banked memory services for several banking designs
+- Disk drivers for RAM, ROM, Floppy, IDE ATA/ATAPI, CF, SD, USB, Zip,
+  Iomega
+- Serial drivers including UART (16550-like), ASCI, ACIA, SIO
+- Video drivers including TMS9918, SY6545, MOS8563, HD6445, Xosera
+- Keyboard (PS/2) drivers via VT8242 or PPI interfaces
+- Real time clock drivers including DS1302, BQ4845
+- Support for CP/NET networking using Wiznet, MT011 or Serial
+- Built-in VT-100 terminal emulation support
 
 A dynamic disk drive letter assignment mechanism allows mapping
 operating system drive letters to any available disk media.
@@ -51,15 +58,11 @@ Additionally, mass storage devices (IDE Disk, CF Card, SD Card, etc.)
 support the use of multiple slices (up to 256 per device). Each slice
 contains a complete CP/M filesystem and can be mapped independently to
 any drive letter. This overcomes the inherent size limitations in legacy
-OSes and allows up to 2GB of accessible storage on a single device.
+OSes and allows up to 2GB of addressable storage on a single device,
+with up to 128MB accessible at any one time.
 
-The pre-built ROM firmware images are generally suitable for most users.
-However, it is also very easy to modify and build custom ROM images that
-fully tailor the firmware to your specific preferences. All tools
-required to build custom ROM firmware under Windows are included – no
-need to install assemblers, etc. The firmware can also be built using
-Linux or MacOS after confirming a few standard tools have been
-installed.
+
+Included Software
 
 Multiple disk images are provided in the distribution. Most disk images
 contain a complete, bootable, ready-to-run implementation of a specific
@@ -68,11 +71,24 @@ with a full operating system implementation. If you use this disk image,
 you can easily pick whichever operating system you want to boot without
 changing media.
 
-By design, RomWBW isolates all of the hardware specific functions in the
-ROM chip itself. The ROM provides a hardware abstraction layer such that
-all of the operating systems and applications on a disk will run on any
-RomWBW-based system. To put it simply, you can take a disk (or CF/SD/USB
-Card) and move it between systems transparently.
+Some of the included software:
+
+- Operating Systems (CP/M 2.2, ZSDOS, NZ-COM, CP/M 3, ZPM3, Z3PLUS, QPM
+  )
+- Support for other operating systems, p-System, FreeRTOS, and FUZIX.
+- Programming Tools (Z80ASM, Turbo Pascal, Forth, Cowgol)
+- C Compiler’s including Aztec-C, and HI-TECH C
+- Microsoft Basic Compiler, and Microsoft Fortran
+- Some games such as Colossal Cave, Zork, etc
+- Wordstar Word processing software
+
+Some of the provided software can be launched directly from the ROM
+firmware itself:
+
+- System Monitor
+- Operating Systems (CP/M 2.2, ZSDOS)
+- ROM BASIC (Nascom BASIC and Tasty BASIC)
+- ROM Forth
 
 A tool is provided that allows you to access a FAT-12/16/32 filesystem.
 The FAT filesystem may be coresident on the same disk media as RomWBW
@@ -80,30 +96,67 @@ slices or on stand-alone media. This makes exchanging files with modern
 OSes such as Windows, MacOS, and Linux very easy.
 
 
-
-ACQUIRING ROMWBW
-
+ROM Distribution
 
 The RomWBW Repository (https://github.com/wwarthen/RomWBW) on GitHub is
 the official distribution location for all project source and
-documentation. The fully-built distribution releases are available on
-the RomWBW Releases Page (https://github.com/wwarthen/RomWBW/releases)
-of the repository. On this page, you will normally see a Development
-Snapshot as well as recent stable releases. Unless you have a specific
-reason, I suggest you stick to the most recent stable release. Expand
-the “Assets” drop-down for the release you want to download, then select
-the asset named RomWBW-vX.X.X-Package.zip. The Package asset includes
-all pre-built ROM and Disk images as well as full source code. The other
-assets contain only source code and do not have the pre-built ROM or
-disk images.
+documentation.
 
-All source code and distributions are maintained on GitHub. Code
-contributions are very welcome.
+RomWBW is distributed as both source code and pre-built ROM and disk
+images.
+
+The pre-built ROM images distributed with RomWBW are based on the
+default system configurations as determined by the hardware
+provider/designer. The pre-built ROM firmware images are generally
+suitable for most users.
+
+The fully-built distribution releases are available on the RomWBW
+Releases Page (https://github.com/wwarthen/RomWBW/releases) of the
+repository.
+
+On this page, you will normally see a Development Snapshot as well as
+recent stable releases. Unless you have a specific reason, I suggest you
+stick to the most recent stable release.
+
+The asset named RomWBW-vX.X.X-Package.zip includes all pre-built ROM and
+Disk images as well as full source code. The other assets contain only
+source code and do not have the pre-built ROM or disk images.
+
+Distribution Directory Layout
+
+The RomWBW distribution is a compressed zip archive file organized in a
+set of directories. Each of these directories has its own ReadMe.txt
+file describing the contents in detail. In summary, these directories
+are:
+
+  -------------------------------------------------------------------------
+  DIRECTORY   DESCRIPTION
+  ----------- -------------------------------------------------------------
+  BINARY      The final output files of the build process are placed here.
+              Most importantly, the ROM images with the file names ending
+              in “.rom” and disk images ending in .img.
+
+  DOC         Contains various detailed documentation, both RomWBW
+              specifically as well as the operating systems and
+              applications.
+
+  SOURCE      Contains the source code files used to build the software and
+              ROM images.
+
+  TOOLS       Contains the programs that are used by the build process or
+              that may be useful in setting up your system.
+  -------------------------------------------------------------------------
+
+Building from Source
+
+It is also very easy to modify and build custom ROM images that fully
+tailor the firmware to your specific preferences. All tools required to
+build custom ROM firmware under Windows are included – no need to
+install assemblers, etc. The firmware can also be built using Linux or
+MacOS after confirming a few standard tools have been installed.
 
 
-
-INSTALLATION & OPERATION
-
+Installation & Operation
 
 In general, installation of RomWBW on your platform is very simple. You
 just need to program your ROM with the correct ROM image from the RomWBW
@@ -112,137 +165,235 @@ drives (IDE disk, CF Card, SD Card, etc.) which then provides even more
 functionality.
 
 Complete instructions for installation and operation of RomWBW are found
-in the RomWBW User Guide.
+in the RomWBW User Guide. It is also a good idea to review the Release
+Notes for helpful release-specific information.
 
 
 Documentation
 
-Documentation for RomWBW includes:
+There are several documents that form the core of the RomWBW
+documentation:
 
--   RomWBW User Guide
--   RomWBW System Guide
--   RomWBW Applications
--   RomWBW Errata
+- RomWBW User Guide is the main user guide for RomWBW, it covers the
+  major topics of how to install, manage and use RomWBW, and includes
+  additional guidance to the use of some of the operating systems
+  supported by RomWBW
+
+- RomWBW Hardware contains a description of all the hardware platforms,
+  and devices supported by RomWBW.
+
+- RomWBW Applications is a reference for the ROM-hosted and OS-hosted
+  applications created or customized to enhance the operation of RomWBW.
+
+- RomWBW Disk Catalog is a reference for the contents of the disk images
+  provided with RomWBW, with a description of many of the files on each
+  image
+
+- RomWBW System Guide discusses much of the internal design and
+  construction of RomWBW. It includes a reference for the RomWBW HBIOS
+  API functions.
+
+Each of the operating systems and ROM applications included with RomWBW
+are sophisticated tools in their own right. It is not reasonable to
+fully document their usage. However, you will find complete manuals in
+PDF format in the Doc directory of the distribution. The intention of
+this documentation is to describe the operation of RomWBW and the ways
+in which it enhances the operation of the included applications and
+operating systems.
+
+Since RomWBW is purely a software product for many different platforms,
+the documentation does NOT cover hardware construction, configuration,
+or troubleshooting – please see your hardware provider for this
+information.
 
 
 
-ACKNOWLEDGMENTS
+SUPPORT
 
 
+Getting Assistance
+
+The best way to get assistance with RomWBW or any aspect of the
+RetroBrew Computers projects is via one of the community forums:
+
+- RetroBrew Computers Forum
+- RC2014 Google Group
+- retro-comp Google Group
+
+Submission of issues and bugs are welcome at the RomWBW GitHub
+Repository.
+
+Also feel free to email Wayne Warthen at wwarthen@gmail.com. I am happy
+to provide support adapting RomWBW to new or modified systems
+
+
+
+CONTRIBUTIONS
+
+
+All source code and distributions are maintained on GitHub.
+Contributions of all kinds to RomWBW are very welcome.
+
+
+Acknowledgments
+
 I want to acknowledge that a great deal of the code and inspiration for
 RomWBW has been provided by or derived from the work of others in the
 RetroBrew Computers Community. I sincerely appreciate all of their
 contributions. The list below is probably missing many names – please
 let me know if I missed you!
 
--   Andrew Lynch started it all when he created the N8VEM Z80 SBC which
-    became the first platform RomWBW supported. Some of his original
-    code can still be found in RomWBW.
+- Andrew Lynch started it all when he created the N8VEM Z80 SBC which
+  became the first platform RomWBW supported. Some of his original code
+  can still be found in RomWBW.
 
--   Dan Werner wrote much of the code from which RomWBW was originally
-    derived and he has always been a great source of knowledge and
-    advice.
+- Dan Werner wrote much of the code from which RomWBW was originally
+  derived and he has always been a great source of knowledge and advice.
 
--   Douglas Goodall contributed code, time, testing, and advice in “the
-    early days”. He created an entire suite of application programs to
-    enhance the use of RomWBW. Unfortunately, they have become unusable
-    due to internal changes within RomWBW. As of RomWBW 2.6, these
-    applications are no longer provided.
+- Douglas Goodall contributed code, time, testing, and advice in “the
+  early days”. He created an entire suite of application programs to
+  enhance the use of RomWBW. Unfortunately, they have become unusable
+  due to internal changes within RomWBW. As of RomWBW 2.6, these
+  applications are no longer provided.
 
--   Sergey Kiselev created several hardware platforms for RomWBW
-    including the very popular Zeta.
+- Sergey Kiselev created several hardware platforms for RomWBW including
+  the very popular Zeta.
 
--   David Giles created support for the Z180 CSIO which is now included
-    SD Card driver.
+- David Giles created support for the Z180 CSIO which is now included SD
+  Card driver.
 
--   Phil Summers contributed the Forth and BASIC adaptations in ROM, the
-    AY-3-8910 sound driver, DMA support, and a long list of general code
-    and documentation enhancements.
+- Phil Summers contributed the Forth and BASIC adaptations in ROM, the
+  AY-3-8910 sound driver, DMA support, and a long list of general code
+  and documentation enhancements.
 
--   Ed Brindley contributed some of the code that supports the RCBus
-    platform.
+- Ed Brindley contributed some of the code that supports the RCBus
+  platform.
 
--   Spencer Owen created the RC2014 series of hobbyist kit computers
-    which has exponentially increased RomWBW usage. Some of his kits
-    include RomWBW.
+- Spencer Owen created the RC2014 series of hobbyist kit computers which
+  has exponentially increased RomWBW usage. Some of his kits include
+  RomWBW.
 
--   Stephen Cousins has likewise created a series of hobbyist kit
-    computers at Small Computer Central and is distributing RomWBW with
-    many of them.
+- Stephen Cousins has likewise created a series of hobbyist kit
+  computers at Small Computer Central and is distributing RomWBW with
+  many of them.
 
--   Alan Cox has contributed some driver code and has provided a great
-    deal of advice.
+- Alan Cox has contributed some driver code and has provided a great
+  deal of advice.
 
--   The CP/NET client files were developed by Douglas Miller.
+- The CP/NET client files were developed by Douglas Miller.
 
--   Phillip Stevens contributed support for FreeRTOS.
+- Phillip Stevens contributed support for FreeRTOS.
 
--   Curt Mayer contributed the original Linux / MacOS build process.
+- Curt Mayer contributed the original Linux / MacOS build process.
 
--   UNA BIOS and FDISK80 are the products of John Coffman.
+- UNA BIOS and FDISK80 are the products of John Coffman.
 
--   FLASH4 is a product of Will Sowerbutts.
+- FLASH4 is a product of Will Sowerbutts.
 
--   CLRDIR is a product of Max Scane.
+- CLRDIR is a product of Max Scane.
 
--   Tasty Basic is a product of Dimitri Theulings.
+- Tasty Basic is a product of Dimitri Theulings.
 
--   Dean Netherton contributed eZ80 CPU support, the sound driver
-    interface, and the SN76489 sound driver.
+- Dean Netherton contributed eZ80 CPU support, the sound driver
+  interface, and the SN76489 sound driver.
 
--   The RomWBW Disk Catalog document was produced by Mykl Orders.
+- The RomWBW Disk Catalog document was produced by Mykl Orders.
 
--   Rob Prouse has created many of the supplemental disk images
-    including Aztec C, HiTech C, SLR Z80ASM, Turbo Pascal, Microsoft
-    BASIC Compiler, Microsoft Fortran Compiler, and a Games compendium.
+- Rob Prouse has created many of the supplemental disk images including
+  Aztec C, HiTech C, SLR Z80ASM, Turbo Pascal, Microsoft BASIC Compiler,
+  Microsoft Fortran Compiler, and a Games compendium.
 
--   Martin R has provided substantial help reviewing and improving the
-    User Guide and Applications documents.
+- Martin R has provided substantial help reviewing and improving the
+  User Guide and Applications documents.
 
--   Mark Pruden has also contributed a great deal of content to the Disk
-    Catalog, User Guide as well as contributing the disk image for the
-    Z3PLUS operating system, the COPYSL utility, and also implemented
-    feature for RomWBW configuration by NVRAM.
+- Mark Pruden has made a wide variety of contributions including:
 
--   Jacques Pelletier has contributed the DS1501 RTC driver code.
+  - significant content in the Disk Catalog and User Guide
+  - creation of the Introduction and Hardware documents
+  - Z3PLUS operating system disk image
+  - COPYSL utility
+  - SLABEL utility
+  - a feature for RomWBW configuration by NVRAM
+  - the /B bulk mode of disk assignment to the ASSIGN utility
 
--   Jose Collado has contributed enhancements to the TMS driver
-    including compatibility with standard TMS register configuration.
+- Jacques Pelletier has contributed the DS1501 RTC driver code.
 
--   Kevin Boone has contributed a generic HBIOS date/time utility
-    (WDATE).
+- Jose Collado has contributed enhancements to the TMS driver including
+  compatibility with standard TMS register configuration.
 
--   Matt Carroll has contributed a fix to XM.COM that corrects the port
-    specification when doing a send.
+- Kevin Boone has contributed a generic HBIOS date/time utility (WDATE).
 
--   Dean Jenkins enhanced the build process to accommodate the Raspberry
-    Pi 4.
+- Matt Carroll has contributed a fix to XM.COM that corrects the port
+  specification when doing a send.
 
--   Tom Plano has contributed a new utility (HTALK) to allow talking
-    directly to HBIOS COM ports.
+- Dean Jenkins enhanced the build process to accommodate the Raspberry
+  Pi 4.
 
--   Lars Nelson has contributed several generic utilities such as a
-    universal (OS agnostic) UNARC application.
+- Tom Plano has contributed a new utility (HTALK) to allow talking
+  directly to HBIOS COM ports.
 
--   Dylan Hall added support for specifying a secondary console.
+- Lars Nelson has contributed several generic utilities such as a
+  universal (OS agnostic) UNARC application.
 
--   Bill Shen has contributed boot loaders for several of his systems.
+- Dylan Hall added support for specifying a secondary console.
 
--   Laszlo Szolnoki has contributed an EF9345 video display controller
-    driver.
+- Bill Shen has contributed boot loaders for several of his systems.
 
--   Ladislau Szilagyi has contributed an enhanced version of CP/M Cowgol
-    that leverages RomWBW memory banking.
+- Laszlo Szolnoki has contributed an EF9345 video display controller
+  driver.
 
--   Les Bird has contributed support for the NABU w/ Option Board
+- Ladislau Szilagyi has contributed an enhanced version of CP/M Cowgol
+  that leverages RomWBW memory banking.
 
-Contributions of all kinds to RomWBW are very welcome.
+- Les Bird has contributed support for the NABU w/ Option Board
+
+- Rob Gowin created an online documentation site via MkDocs, and
+  contributed a driver for the Xosera FPGA-based video controller.
+
+
+Related Projects
+
+Outside of the hardware platforms adapted to RomWBW, there are a variety
+of projects that either target RomWBW specifically or provide a
+RomWBW-specific variation. These efforts are greatly appreciated and are
+listed below. Please contact the author if there are any other such
+projects that are not listed.
+
+Z88DK
+
+Z88DK is a software powerful development kit for Z80 computers
+supporting both C and assembly language. This kit now provides specific
+library support for RomWBW HBIOS. The Z88DK project is hosted at
+https://github.com/z88dk/z88dk.
+
+Paleo Editor
+
+Steve Garcia has created a Windows-hosted IDE that is tailored to
+development of RomWBW. The project can be found at
+https://github.com/alloidian/PaleoEditor.
+
+Z80 fig-FORTH
+
+Dimitri Theulings’ implementation of fig-FORTH for the Z80 has a
+RomWBW-specific variant. The project is hosted at
+https://github.com/dimitrit/figforth.
+
+Assembly Language Programming for the RC2014 Zed
+
+Bruce Hall has written a very nice document that describes how to
+develop assembly language applications on RomWBW. It begins with the
+setup and configuration of a new RC2014 Zed system running RomWBW. It
+describes not only generic CP/M application development, but also RomWBW
+HBIOS programming and bare metal programming. The latest copy of this
+document is hosted at http://w8bh.net/Assembly for RC2014Z.pdf.
 
 
 
 LICENSING
 
 
+License Terms
+
 RomWBW 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
@@ -282,20 +433,3 @@ encouraged to submit their contributions via the RomWBW source code
 control system to ensure their contributions are clearly documented.
 
 All contributions to RomWBW are subject to this license.
-
-
-
-GETTING ASSISTANCE
-
-
-The best way to get assistance with RomWBW or any aspect of the
-RetroBrew Computers projects is via one of the community forums:
-
--   RetroBrew Computers Forum
--   RC2014 Google Group
--   retro-comp Google Group
-
-Submission of issues and bugs are welcome at the RomWBW GitHub
-Repository.
-
-Also feel free to email Wayne Warthen at wwarthen@gmail.com.

Source/Apps/BBCBASIC/bbcbasic.txt

@@ -1,16 +1,21 @@
-This is a RomWBW HBIOS adaptation of BBCBASIC v5.00.  The
-cursor and screen management assumes the use of an ANSI/VT-100 terminal
-which is generally correct for RomWBW.  Support for a hardware system
-timer is also implemented.  If your system does not have a hardware
-timer, the TIME function will always return 0 and the timeout
+This is a RomWBW HBIOS adaptation of BBCBASIC v5.00 by R.T.Russell.
+This implementation was adapted from the source code found at
+https://github.com/rtrussell/BBCZ80.
+
+The cursor and screen management assumes the use of an ANSI/VT-100
+terminal which is generally correct for RomWBW.  Support for a hardware
+system timer is also implemented.  If your system does not have a
+hardware timer, the TIME function will always return 0 and the timeout
 parameter of the INKEY(n) function will not be observed (will never
 timeout).
 
 What follows is some basic information on BBCBASIC from the
 distribution.  Note that it starts with the v3.00 information and
-later on provides information on the changes in v5.00.
+later on provides information on the changes in v5.00.  Complete
+documentation for the BBC BASIC (Z80) is found online at
+https://www.bbcbasic.co.uk/bbcbasic/mancpm/index.html.
 
--- WBW 1:15 PM 5/30/2024
+-- WBW 4:21 PM 2/17/2025
 
 
 
@@ -23,55 +28,55 @@ later on provides information on the changes in v5.00.
 
 1. INTRODUCTION
 
-   BBC  BASIC (Z80) has been designed to be as compatible as  possible  with 
-   Version 4 of the 6502 BBC BASIC resident in the BBC Micro Master  series.  
-   The language syntax is not always identical to that of the 6502  version, 
+   BBC  BASIC (Z80) has been designed to be as compatible as  possible  with
+   Version 4 of the 6502 BBC BASIC resident in the BBC Micro Master  series.
+   The language syntax is not always identical to that of the 6502  version,
    but in most cases the Z80 version is more tolerant.
 
-   BBC  BASIC (Z80) is as machine independent as possible and, as  supplied, 
-   it  will  run  on any CP/M 2.2 (or later) system using  a  Z80  processor 
-   (checks  are carried out to ensure that the processor is a Z80  and  that 
-   the version of CP/M is at least 2.2).  It is minimally configured for  an 
+   BBC  BASIC (Z80) is as machine independent as possible and, as  supplied,
+   it  will  run  on any CP/M 2.2 (or later) system using  a  Z80  processor
+   (checks  are carried out to ensure that the processor is a Z80  and  that
+   the version of CP/M is at least 2.2).  It is minimally configured for  an
    ADM3a-compatible VDU.
 
-   Few  CP/M  systems  offer  colour graphics of  the  quality  provided  as 
-   standard  on  the BBC Microcomputer, and no software can  provide  colour 
-   high-resolution graphics from a monochrome character-orientated computer.  
-   However,  many CP/M system users are interested in the  advanced  program 
-   structures  available from BBC BASIC and, within the limitations  of  the 
-   host  computer, BBC BASIC (Z80) provides the programming  structures  and 
+   Few  CP/M  systems  offer  colour graphics of  the  quality  provided  as
+   standard  on  the BBC Microcomputer, and no software can  provide  colour
+   high-resolution graphics from a monochrome character-orientated computer.
+   However,  many CP/M system users are interested in the  advanced  program
+   structures  available from BBC BASIC and, within the limitations  of  the
+   host  computer, BBC BASIC (Z80) provides the programming  structures  and
    the non-graphic commands and functions specified for BBC BASIC.
 
-   In order to make full use of the facilities available in BBC BASIC  (Z80) 
-   it is necessary to install a small patch to adapt it to the  capabilities 
-   of  the  host  computer.  The source code of the  patch  present  in  the 
+   In order to make full use of the facilities available in BBC BASIC  (Z80)
+   it is necessary to install a small patch to adapt it to the  capabilities
+   of  the  host  computer.  The source code of the  patch  present  in  the
    distribution version is supplied as BBCDIST.MAC.
 
-   This  documentation  should be read in conjunction with  a  standard  BBC 
-   BASIC  manual.  Only those features which differ from the standard  Acorn 
+   This  documentation  should be read in conjunction with  a  standard  BBC
+   BASIC  manual.  Only those features which differ from the standard  Acorn
    versions are documented here.
 
 
 2. MEMORY UTILISATION
 
-   BBC  BASIC (Z80) requires about 16 Kbytes of code space, resulting  in  a 
-   value  of  PAGE  of about &3E00.  The remainder of  the  user  memory  is 
-   available  for BASIC programs, variables (heap) and stack.  Depending  on 
+   BBC  BASIC (Z80) requires about 16 Kbytes of code space, resulting  in  a
+   value  of  PAGE  of about &3E00.  The remainder of  the  user  memory  is
+   available  for BASIC programs, variables (heap) and stack.  Depending  on
    the system configuration, HIMEM can have a value up to &FE00.
 
 
 3. COMMANDS, STATEMENTS AND FUNCTIONS
 
-   The syntax of BASIC commands,  statements and functions is in most  cases 
-   identical  to  that  of  the  BBC  Micro  version  (BASIC  4).   The  few 
+   The syntax of BASIC commands,  statements and functions is in most  cases
+   identical  to  that  of  the  BBC  Micro  version  (BASIC  4).   The  few
    differences are documented here:
 
    ADVAL
    This function is not implemented.
 
    CALL
-   CALL  sets  up a table in RAM containing details of the  parameters;  the 
-   processor's  IX register is set to the address of this  parameter  table.  
+   CALL  sets  up a table in RAM containing details of the  parameters;  the
+   processor's  IX register is set to the address of this  parameter  table.
    The other processor registers are initialised as follows:
 
                A is initialised to the least significant byte of A%
@@ -92,7 +97,7 @@ later on provides information on the changes in v5.00.
             128          Fixed string        $A%
             129          Movable string      A$
 
-   On  entry  to the subroutine the parameter table contains  the  following 
+   On  entry  to the subroutine the parameter table contains  the  following
    values:
 
           Number of parameters     1 byte (at IX)
@@ -103,29 +108,29 @@ later on provides information on the changes in v5.00.
           Parameter type           ) repeated as often as necessary
           Parameter address        )
 
-   Except  in  the case of a movable string (normal  string  variable),  the 
-   parameter  address  given is the absolute address at which  the  item  is 
-   stored.  In the case of movable strings (type 129) it is the address of a 
-   4-byte parameter block containing the current length, the maximum  length 
+   Except  in  the case of a movable string (normal  string  variable),  the
+   parameter  address  given is the absolute address at which  the  item  is
+   stored.  In the case of movable strings (type 129) it is the address of a
+   4-byte parameter block containing the current length, the maximum  length
    and the start address of the string (LSB first) in that order.
 
-   Integer  variables  are stored in twos complement form with  their  least 
+   Integer  variables  are stored in twos complement form with  their  least
    significant byte first.
 
-   Fixed  strings are stored as the characters of the string followed  by  a 
+   Fixed  strings are stored as the characters of the string followed  by  a
    carriage return (&0D).
 
-   Floating point variables are stored in binary floating point format  with 
-   their least significant byte first; the fifth byte is the exponent.   The 
-   mantissa  is  stored as a binary fraction in sign and  magnitude  format.  
-   Bit 7 of the most significant byte is the sign bit and, for the  purposes 
-   of calculating the magnitude of the number, this bit is assumed to be set 
-   to  one.  The exponent is stored as an integer in excess 127  format  (to 
+   Floating point variables are stored in binary floating point format  with
+   their least significant byte first; the fifth byte is the exponent.   The
+   mantissa  is  stored as a binary fraction in sign and  magnitude  format.
+   Bit 7 of the most significant byte is the sign bit and, for the  purposes
+   of calculating the magnitude of the number, this bit is assumed to be set
+   to  one.  The exponent is stored as an integer in excess 127  format  (to
    find the exponent subtract 127 from the value in the fifth byte).
 
-   If the exponent byte of a floating point number is zero, the number is an 
-   integer stored in integer format in the mantissa bytes.  Thus an  integer 
-   can be represented in two different ways in a real variable.  For example 
+   If the exponent byte of a floating point number is zero, the number is an
+   integer stored in integer format in the mantissa bytes.  Thus an  integer
+   can be represented in two different ways in a real variable.  For example
    the value +5 can be stored as:
 
             05 00 00 00 00         Integer 5
@@ -138,15 +143,15 @@ later on provides information on the changes in v5.00.
    This statement is not implemented.
 
    EDIT
-   A command to edit or concatenate and edit the specified program  line(s).  
-   The specified lines (including their line numbers) are listed as a single 
-   line.   By changing only the line number you can use EDIT to duplicate  a 
+   A command to edit or concatenate and edit the specified program  line(s).
+   The specified lines (including their line numbers) are listed as a single
+   line.   By changing only the line number you can use EDIT to duplicate  a
    line.
 
      EDIT 230
      EDIT 200,230
 
-   The  following control functions are active both in the EDIT mode and  in 
+   The  following control functions are active both in the EDIT mode and  in
    the immediate entry mode (i.e. at the BASIC prompt):
 
      Move the cursor one character position to the left
@@ -159,8 +164,8 @@ later on provides information on the changes in v5.00.
      Delete all characters to the left of the cursor
      Delete all characters from the cursor to the end of the line
 
-   The choice of which keys activate these functions is made when BBC  BASIC 
-   is configured for a particular system.  The distribution version uses ^H, 
+   The choice of which keys activate these functions is made when BBC  BASIC
+   is configured for a particular system.  The distribution version uses ^H,
    ^I, ^K, ^J, ^A, ^E, DEL (&7F), ^L and ^X.
 
    To exit EDIT mode and replace the edited line, type RETURN (ENTER).
@@ -171,28 +176,28 @@ later on provides information on the changes in v5.00.
    This statement is not implemented.
 
    GET
-   This  function  waits for a character to be typed at  the  keyboard,  and 
+   This  function  waits for a character to be typed at  the  keyboard,  and
    returns the ASCII code.
 
-   GET can also be used to read data from a processor I/O port; full  16-bit 
+   GET can also be used to read data from a processor I/O port; full  16-bit
    port addressing is available:
 
           N% = GET(X%) : REM input from port X%
 
    INKEY
-   This function waits for a specified maximum number of centiseconds for  a 
-   character to be typed at the keyboard.  If no character is typed in  that 
-   time, the value -1 is returned.  In the distribution version the delay is 
-   determined by a simple software timing loop, and may be very  inaccurate.  
-   The customisation patch allows this to be adjusted to suit the system  in 
+   This function waits for a specified maximum number of centiseconds for  a
+   character to be typed at the keyboard.  If no character is typed in  that
+   time, the value -1 is returned.  In the distribution version the delay is
+   determined by a simple software timing loop, and may be very  inaccurate.
+   The customisation patch allows this to be adjusted to suit the system  in
    use.
 
    INPUT#
-   The format of data files is different from that used by the BBC Micro, in 
-   part  to improve compatibility with standard CP/M files.  Numeric  values 
-   are  stored  as five bytes in the format documented under  CALL;  if  the 
-   fifth  byte is zero the value is an integer.  Strings are stored  as  the 
-   characters  of the string (in the correct order!) followed by a  carriage 
+   The format of data files is different from that used by the BBC Micro, in
+   part  to improve compatibility with standard CP/M files.  Numeric  values
+   are  stored  as five bytes in the format documented under  CALL;  if  the
+   fifth  byte is zero the value is an integer.  Strings are stored  as  the
+   characters  of the string (in the correct order!) followed by a  carriage
    return (&0D).
 
    MODE
@@ -208,15 +213,15 @@ later on provides information on the changes in v5.00.
    This function is not implemented.
 
    PRINT#
-   The format of data files is different from that used by the BBC Micro, in 
-   part  to improve compatibility with standard CP/M files.  Numeric  values 
-   are  stored  as five bytes in the format documented under  CALL;  if  the 
-   fifth  byte is zero the value is an integer.  Strings are stored  as  the 
-   characters  of the string (in the correct order!) followed by a  carriage 
+   The format of data files is different from that used by the BBC Micro, in
+   part  to improve compatibility with standard CP/M files.  Numeric  values
+   are  stored  as five bytes in the format documented under  CALL;  if  the
+   fifth  byte is zero the value is an integer.  Strings are stored  as  the
+   characters  of the string (in the correct order!) followed by a  carriage
    return (&0D).
 
    PUT
-   A  statement to output data to a processor port.  Full 16-bit  addressing 
+   A  statement to output data to a processor port.  Full 16-bit  addressing
    is available.
 
           PUT A%,N% : REM Output N% to port A%
@@ -225,7 +230,7 @@ later on provides information on the changes in v5.00.
    This statement is not implemented.
 
    TIME
-   This pseudo-variable is not implemented in the distribution version,  but 
+   This pseudo-variable is not implemented in the distribution version,  but
    can be supported by means of the customisation patch.  See BBCDIST.MAC.
 
    USR
@@ -240,34 +245,34 @@ later on provides information on the changes in v5.00.
                H is initialised to the least significant byte of H%
                L is initialised to the least significant byte of L%
 
-   USR returns a 32-bit integer result composed of the processor's H, L,  H' 
+   USR returns a 32-bit integer result composed of the processor's H, L,  H'
    and L' registers, with H being the most significant.
 
 
 4. RESIDENT Z80 ASSEMBLER
 
-   The  in-line  assembler is accessed in exactly the same way as  the  6502 
-   assembler  in  the BBC Micro version of BBC BASIC.  That is,  '['  enters 
+   The  in-line  assembler is accessed in exactly the same way as  the  6502
+   assembler  in  the BBC Micro version of BBC BASIC.  That is,  '['  enters
    assembler mode and ']' exits assembler mode.
 
-   All  standard  Zilog  mnemonics are accepted: ADD, ADC and  SBC  must  be 
-   followed by A or HL.  For example, ADD A,C is accepted but ADD C is  not.  
-   However, the brackets around the port number in IN and OUT are  optional.  
-   Thus  both OUT (5),A and OUT 5,A are accepted.  The instruction IN  F,(C) 
+   All  standard  Zilog  mnemonics are accepted: ADD, ADC and  SBC  must  be
+   followed by A or HL.  For example, ADD A,C is accepted but ADD C is  not.
+   However, the brackets around the port number in IN and OUT are  optional.
+   Thus  both OUT (5),A and OUT 5,A are accepted.  The instruction IN  F,(C)
    is not accepted, but the equivalent code is produced from IN (HL),C
 
-   The pseudo-ops DEFB, DEFW and DEFM are included.  DEFM works like EQUS in 
+   The pseudo-ops DEFB, DEFW and DEFM are included.  DEFM works like EQUS in
    the 6502 version.
 
 
 5. OPERATING SYSTEM INTERFACE
 
-   The   following   resident  Operating  System   ("star")   commands   are 
-   implemented.  They may be accessed directly (e.g. *BYE) or via the  OSCLI 
+   The   following   resident  Operating  System   ("star")   commands   are
+   implemented.  They may be accessed directly (e.g. *BYE) or via the  OSCLI
    statement (OSCLI "BYE").
 
-   Control characters, lower-case characters, DEL and quotation marks may be 
-   incorporated in filenames by using the 'escape' character '|'.   However, 
+   Control characters, lower-case characters, DEL and quotation marks may be
+   incorporated in filenames by using the 'escape' character '|'.   However,
    there is no equivalent to the BBC Microcomputer's '|!' to set bit 7.
 
    *BYE
@@ -278,7 +283,7 @@ later on provides information on the changes in v5.00.
 
    *. [filespec]
    *DIR [filespec]
-   List  the  files which match the (optional) ambiguous  filespec.  If  the 
+   List  the  files which match the (optional) ambiguous  filespec.  If  the
    filespec is omitted, all .BBC files are listed:
                *DIR           List all .BBC files on the disk
                *DIR B:*.*     List all files on disk B:
@@ -288,53 +293,53 @@ later on provides information on the changes in v5.00.
    Select drive d as the default drive for subsequent disk operations.
 
    *ERA filespec
-   Erase (delete) the specified disk file or files.  The extension  defaults 
+   Erase (delete) the specified disk file or files.  The extension  defaults
    to .BBC if omitted.
 
    *ESC [ON|OFF]
-   *ESC OFF disables the abort action of the ESCape key; after *ESC OFF  the 
-   ESCape  key  simply returns the ASCII code ESC (27).  *ESC ON,  or  *ESC, 
+   *ESC OFF disables the abort action of the ESCape key; after *ESC OFF  the
+   ESCape  key  simply returns the ASCII code ESC (27).  *ESC ON,  or  *ESC,
    restores the normal action of the ESCape key.
 
    *EXEC filespec
-   Accept  console  input  from  the  specified file  instead  of  from  the 
+   Accept  console  input  from  the  specified file  instead  of  from  the
    keyboard. If the extension is omitted, .BBC is assumed.
 
    *LOAD filespec aaaa
-   Loads  the specified file into memory at address aaaa. The  load  address 
+   Loads  the specified file into memory at address aaaa. The  load  address
    must be specified. If the extension is omitted, .BBC is assumed.
 
    *OPT [n]
-   Select  the destination for console output characters.  The value n is in 
+   Select  the destination for console output characters.  The value n is in
    the range 0 to 2, as follows:
-               
+
           0    Send characters to the console output
           1    Send characters to the auxiliary output
           2    Send characters to the printer (list) output
 
    *REN newfile=oldfile
    *RENAME newfile=oldfile
-   Renames  'oldfile'  as 'newfile'.  If the extension is omitted,  .BBC  is 
+   Renames  'oldfile'  as 'newfile'.  If the extension is omitted,  .BBC  is
    assumed.
 
    *RESET
-   Rest the disk system (CP/M function 13).  This command does not close any 
-   files  nor does it perform any other housekeeping function.   You  should 
+   Rest the disk system (CP/M function 13).  This command does not close any
+   files  nor does it perform any other housekeeping function.   You  should
    use *RESET after you have changed a disk.
 
    *SAVE filespec aaaa bbbb
    *SAVE filespec aaaa +llll
-   This command saves a specified range of memory to disk. The address range 
-   is  specified either as start (aaaa) and end+1 (bbbb) or as start  (aaaa) 
+   This command saves a specified range of memory to disk. The address range
+   is  specified either as start (aaaa) and end+1 (bbbb) or as start  (aaaa)
    and length (llll). If the extension is omitted, .BBC is assumed.
 
    *SPOOL [filespec]
-   Copy all subsequent console output to the specified file. If the filename 
-   is omitted,  any current spool file is closed and spooling is terminated. 
+   Copy all subsequent console output to the specified file. If the filename
+   is omitted,  any current spool file is closed and spooling is terminated.
    If the extension is omitted, .BBC is assumed.
 
    *TYPE filespec
-   Type the specified file to the screen. If the extension is omitted,  .BBC 
+   Type the specified file to the screen. If the extension is omitted,  .BBC
    is assumed.
 
    *| comment
@@ -352,7 +357,7 @@ later on provides information on the changes in v5.00.
    Trappable - BASIC:
 
       1   Out of range             24   Exp range
-      2                            25   
+      2                            25
       3                            26   No such variable
       4   Mistake                  27   Missing )
       5   Missing ,                28   Bad HEX
@@ -383,9 +388,9 @@ later on provides information on the changes in v5.00.
      198  Disk full                254  Bad command
      200  Close error              255  CP/M error
      204  Bad name
-
 
-New features in BBC BASIC (Z80) version 5.00, May 2024:
+
+New features in BBC BASIC (Z80) version 5.00, January 2025:
 
 1. BASIC V statements
 
@@ -394,7 +399,7 @@ New features in BBC BASIC (Z80) version 5.00, May 2024:
 1.3  CASE...WHEN...OTHERWISE...ENDCASE
 1.4  LOCAL DATA / RESTORE DATA
 1.5  ON ERROR LOCAL / RESTORE ERROR
-1.6  DIM var LOCAL size 
+1.6  DIM var LOCAL size
 1.7  ERROR err, message$
 1.8  RESTORE +n
 1.9  SWAP var1,var2
@@ -408,10 +413,10 @@ New features in BBC BASIC (Z80) version 5.00, May 2024:
 2.3  REPORT$
 2.4  Binary constants
 2.5  LEFT$ & RIGHT$ with last parameter omitted
-2.6  MOD(array)
-2.7  SUM(array)
-2.8  SUMLEN(array)
-2.9  GET$#file 
+2.6  MOD(array())
+2.7  SUM(array())
+2.8  SUMLEN(array())
+2.9  GET$#file
 
 3. BASIC V whole array operations
 
@@ -423,9 +428,12 @@ New features in BBC BASIC (Z80) version 5.00, May 2024:
 3.6  Array initialisation lists
 3.7  Array compound assignment (+= etc.)
 3.8  Make a whole array LOCAL
-3.9  DIM a LOCAL array (on the stack) + 
+3.9  DIM a LOCAL array (on the stack) +
+
+* String array expressions are not currently supported, instead of using
+     a$() = b$() + c$()  use  a$() = b$() : a$() += c$()
+  The use of EVAL with whole-array expressions is not currently supported.
 
-* String array expressions A$() = B$() + C$() are not currently supported.
 + LOCAL string arrays should be initialised to their maximum needed length
   to eliminate the risk of a memory leak each time the PROC/FN is called:
      LOCAL a$() : DIM a$(size%) : a$() = STRING$(max%, "a") : a$() = ""
@@ -434,22 +442,27 @@ New features in BBC BASIC (Z80) version 5.00, May 2024:
 
 4.1  Bit-shifts <<, >>, >>>
 4.2  Floating-point indirection (|)
-4.3  RETURNed parameters from FN/PROC
-4.4  Compound assignment (+=, -=, *=, /= etc.)
-4.5  Assigning to a sub-string: LEFT$()=, MID$()= , RIGHT$()=
-4.6  Hooks for CIRCLE,ELLIPSE,FILL,LINE,MOUSE,ORIGIN,RECTANGLE,TINT,SYS,WAIT
-4.7  Hooks for WIDTH function, TINT function, MODE function
+4.3  Additional VDU delimiter '|'
+4.4  RETURNed parameters from FN/PROC
+4.5  Compound assignment (+=, -=, *=, /= etc.)
+4.6  Assigning to a sub-string: LEFT$()=, MID$()= , RIGHT$()=
+4.7  Hooks for CIRCLE, ELLIPSE, FILL, LINE, ORIGIN, RECTANGLE (graphics)
+4.8  Hooks for MOUSE, OFF, ON, SYS, TINT, WAIT (statements)
+4.9  Hooks for MODE function, TINT function, WIDTH function
 
 5. Extensions to Acorn's BASIC V, compatible with BB4W, BBCSDL and BBCTTY
 
 5.1  EXIT REPEAT / WHILE / FOR [var]
-5.2  Address-of operator ^
-5.3  Byte variables and arrays (& suffix)
+5.2  Address-of operator (^)
+5.3  Byte (unsigned 8-bit) variables and arrays (& suffix)
 5.4  'BY len' and 'TO term' qualifiers to GET$#file
 5.5  ELSE IF <condition> THEN; (trailing semicolon)
 5.6  == synonymous with = in comparisons
 5.7  DIM a global array inside a FN/PROC (use RETURN)
+5.8  DIM var LOCAL -1 returns the stack pointer, even outside a FN/PROC
+5.9  RESTORE LOCAL restores local variables without exiting the FN/PROC
 
 Note: The token for PUT has changed from &CE in version 3 to &0E in version 5.
 If this token is present in existing programs it will list as ENDWHILE rather
-than PUT, and the programs will need to be modified to restore functionality.
+than PUT, and the programs will need to be modified to restore functionality.
+

Source/Apps/BBCBASIC/hook.z80

@@ -1,64 +1,68 @@
-	NAME	('HOOK')
-;
-	GLOBAL	CLG
-	GLOBAL	COLOUR
-	GLOBAL	DRAW
-	GLOBAL	ENVEL
-	GLOBAL	GCOL
-	GLOBAL	MODE
-	GLOBAL	MOVE
-	GLOBAL	PLOT
-	GLOBAL	SOUND
-	GLOBAL	PUTIMS
-	GLOBAL	CIRCLE
-	GLOBAL	ELLIPSE
-	GLOBAL	FILL
-	GLOBAL	MOUSE
-	GLOBAL	ORIGIN
-	GLOBAL	RECTAN
-	GLOBAL	LINE
-	GLOBAL	TINT
-	GLOBAL	WAIT
-	GLOBAL	SYS
-;
-	GLOBAL	ADVAL
-	GLOBAL	POINT
-	GLOBAL	GETIMS
-	GLOBAL	TINTFN
-	GLOBAL	MODEFN
-	GLOBAL	WIDFN
-;
-	EXTRN	EXTERR
-;
-CLG:
-COLOUR:
-DRAW:
-ENVEL:
-GCOL:
-MODE:
-MOVE:
-PLOT:
-SOUND:
-ADVAL:
-POINT:
-GETIMS:
-PUTIMS:
-CIRCLE:
-ELLIPSE:
-FILL:
-MOUSE:
-ORIGIN:
-RECTAN:
-LINE:
-TINT:
-TINTFN:
-MODEFN:
-WIDFN:
-WAIT:
-SYS:
-	XOR	A
-	CALL	EXTERR
-	DEFM	'Sorry'
-	DEFB	0
-;
-	END
+	NAME	('HOOK')
+;
+	GLOBAL	CLG
+	GLOBAL	COLOUR
+	GLOBAL	DRAW
+	GLOBAL	ENVEL
+	GLOBAL	GCOL
+	GLOBAL	MODE
+	GLOBAL	MOVE
+	GLOBAL	PLOT
+	GLOBAL	SOUND
+	GLOBAL	PUTIMS
+	GLOBAL	CIRCLE
+	GLOBAL	ELLIPS
+	GLOBAL	FILL
+	GLOBAL	MOUSE
+	GLOBAL	ORIGIN
+	GLOBAL	RECTAN
+	GLOBAL	LINE
+	GLOBAL	TINT
+	GLOBAL	WAIT
+	GLOBAL	SYS
+	GLOBAL	CSRON
+	GLOBAL	CSROFF
+;
+	GLOBAL	ADVAL
+	GLOBAL	POINT
+	GLOBAL	GETIMS
+	GLOBAL	TINTFN
+	GLOBAL	MODEFN
+	GLOBAL	WIDFN
+;
+	EXTRN	EXTERR
+;
+CLG:
+COLOUR:
+DRAW:
+ENVEL:
+GCOL:
+MODE:
+MOVE:
+PLOT:
+SOUND:
+ADVAL:
+POINT:
+GETIMS:
+PUTIMS:
+CIRCLE:
+ELLIPS:
+FILL:
+MOUSE:
+ORIGIN:
+RECTAN:
+LINE:
+TINT:
+TINTFN:
+MODEFN:
+WIDFN:
+WAIT:
+SYS:
+CSRON:
+CSROFF:
+	XOR	A
+	CALL	EXTERR
+	DEFM	'Sorry'
+	DEFB	0
+;
+	END

Source/Apps/BBCBASIC/licence.txt

@@ -0,0 +1,19 @@
+Copyright (c) 2024, Richard T. Russell, http://www.rtrussell.co.uk/
+
+This software is provided 'as-is', without any express or implied
+warranty.  In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software.  If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source distribution.

Source/Apps/Build.cmd

@@ -29,6 +29,8 @@ call :build Survey || exit /b
 call :build HTalk || exit /b
 call :build BBCBASIC || exit /b
 call :build copysl || exit /b
+call :build slabel || exit /b
+call :build ZDE || exit /b
 
 goto :eof
 

Source/Apps/Clean.cmd

@@ -24,6 +24,8 @@ call :clean Survey || exit /b
 call :clean HTalk || exit /b
 call :clean BBCBASIC || exit /b
 call :clean copysl || exit /b
+call :clean slabel || exit /b
+call :clean ZDE || exit /b
 
 goto :eof
 

Source/Apps/Makefile

@@ -1,5 +1,5 @@
 SUBDIRS = HTalk XM FDU FAT Tune Test ZMP ZMD Dev VGM cpuspd reboot Survey BBCBASIC copysl \
-	sysgen syscopy assign format talk mode rtc timer
+	slabel sysgen syscopy assign format talk mode rtc timer ZDE
 TOOLS =../../Tools
 
 include $(TOOLS)/Makefile.inc

Source/Apps/Tune/cli.inc

@@ -23,6 +23,39 @@ CLI_HAVE_HBIOS_SWITCH1			; NOT MATCHED --HBIOS
 	LD	(HBIOSMD), A
 	RET
 
+CLI_HAVE_DELAY_SWITCH:
+ 	LD	HL, CLIARGS		; TEST FOR --DELAY ON COMMAND LINE
+	LD	DE, DELAYOPT
+	CALL	STRINDEX
+	JR	NZ, CLI_HAVE_DELAY_SWITCH1
+	OR	$FF			; MATCHED --DELAY
+	LD	(DELAYMD), A
+	RET
+CLI_HAVE_DELAY_SWITCH1			; NOT MATCHED --HBIOS
+	XOR	A
+	LD	(DELAYMD), A
+	RET
+
+CLI_PORTS:
+ 	LD	HL, CLIARGS		; TEST FOR -MSX ON COMMAND LINE
+	LD	DE, OPT_MSX
+	CALL	STRINDEX
+	JR	NZ, CLI_PORTS1
+	LD	A,PORTS_MSX
+	JR	CLI_PORTS_Z
+CLI_PORTS1:
+ 	LD	HL, CLIARGS		; TEST FOR -RC ON COMMAND LINE
+	LD	DE, OPT_RC
+	CALL	STRINDEX
+	JR	NZ, CLI_PORTS2
+	LD	A,PORTS_RC
+	JR	CLI_PORTS_Z
+CLI_PORTS2:
+	LD	A,PORTS_AUTO		; USE AUTO PORT SELECTION
+CLI_PORTS_Z:
+	LD	(USEPORTS),A		; SAVE PORTS SELECTION
+	RET
+
 CLI_ABRT_UNSUPPFILTYP:
 	PUSH	AF
 	ISHBIOS
@@ -79,7 +112,10 @@ CLI_OCTAVE_ADJST5:
 	LD	(OCTAVEADJ), A
 	RET
 
-HBIOSOPT:	.DB	"--HBIOS", 0
+OPT_MSX		.DB	"-MSX", 0			; USE MSX PORTS
+OPT_RC		.DB	"-RC", 0			; USE RC PORTS
+HBIOSOPT:	.DB	"--HBIOS", 0			; USE HBIOS API FOR PLAYBACK
+DELAYOPT:	.DB	"-DELAY",0			; FORCE DELAY MODE
 DOWN1		.DB	"-t1", 0			; DOWN AN OCTAVE
 DOWN2		.DB	"-t2", 0			; DOWN TWO OCTAVE
 UP1		.DB	"+t1", 0			; UP AN OCTAVE

Source/Apps/Tune/timing.inc

@@ -41,8 +41,14 @@ DLY1	DEC	BC              	; [6]
 ; Test for timer running to determine if it can be used for delay
 ; Return string message in DE
 ; Assigned (WMOD) with 0 if no hardware time, 1 if hardware timer found
+; If -DELAY on command line, force delay mode
 ;
 PROBETIMER:
+	LD	A,(DELAYMD)		; GET COMMAND LINE DELAY FLAG
+	OR	A			; TEST IT
+	LD	A,0			; ASSUME NO TIMER
+	LD	DE,MSGDLY		; DELAY MODE MESSAGE
+	JR	NZ,SETDLY		; IF TRUE, DONE
 	LD	B,BF_SYSGET		; HBIOS: GET function
 	LD	C,$D0			; TIMER subfunction
 	RST	08			; DE:HL := current tick count

Source/Apps/Tune/tune.asm

@@ -52,6 +52,8 @@
 ;   2024-07-08 [WBW] Add support for Les Bird's Graphics, Sound, Joystick
 ;   2024-07-11 [WBW] Updated, Les Bird's module now uses same settings as EB6
 ;   2024-09-17 [WBW] Add support for HEATH H8 with Les Bird's MSX Card
+;   2024-12-12 [WBW] Add options to force standard MSX or RC ports
+;   2025-05-28 [WBW] Add option to force delay mode
 ;_______________________________________________________________________________
 ;
 ; ToDo:
@@ -73,6 +75,10 @@ TYPPT2		.EQU	1		; FILTYP value for PT2 sound file
 TYPPT3		.EQU	2		; FILTYP value for PT3 sound file
 TYPMYM		.EQU	3		; FILTYP value for MYM sound file
 ;
+PORTS_AUTO	.EQU	0		; AUTO select audio chip ports
+PORTS_MSX	.EQU	1		; force MSX audio chip ports
+PORTS_RC	.EQU	2		; force RCBUS audio chip ports
+;
 ; HIGH SPEED CPU CONTROL
 ;
 SBCV2004	.EQU	0		; ENABLE SBC-V2-004 HALF CLOCK DIVIDER
@@ -106,7 +112,9 @@ Id		.EQU	1	; 5) Insert official identificator
 	PRTSTRDE(MSGBAN)		; Print to banner message
 
 	CALL	CLI_ABRT_IF_OPT_FIRST
+	CALL	CLI_PORTS
 	CALL	CLI_HAVE_HBIOS_SWITCH
+	CALL	CLI_HAVE_DELAY_SWITCH
 	CALL	CLI_OCTAVE_ADJST
 	JP	CONTINUE
 
@@ -125,6 +133,22 @@ CONTINUE:
 	OR	A
 	JR	NZ, TSTTIMER		; skip hardware check if using hbios
 
+	LD	A, (USEPORTS)		; get ports option
+	LD	HL,MSXPORTS		; assume MSX
+	CP	PORTS_MSX		; use MSX?
+	JR	Z,FORCE
+	LD	HL,RCPORTS		; asssume RC
+	CP	PORTS_RC		; use RC?
+	JR	Z,FORCE
+	JR	AUTOSEL			; otherwise do auto select
+
+FORCE:
+	LD	BC,CFGSIZ		; Size of one entry
+	LD	DE,CFG			; Active config structure
+	LDIR				; Update active config structure
+	JR	MAT			; Continue
+
+AUTOSEL:
 	LD	HL,CFGTBL		; Point to start of config table
 CFGSEL:
 	LD	A,$FF			; End of table marker
@@ -646,6 +670,17 @@ CFGSIZ	.EQU	$ - CFGTBL
 ;
 	.DB	$FF					; END OF TABLE MARKER
 ;
+; The following are table entries (like above), but not part of auto
+; detection searching.  They are selected byh command line options.
+;
+MSXPORTS:
+	.DB	$FF,	$A0,	$A1,	$FF,	$FF,	$FF,	$FF	; GENERIC MSX
+	.DW	HWSTR_MSX
+;
+RCPORTS:
+	.DB	$FF,	$D8,	$D0,	$FF,	$FF,	$FF,	$FF	; GENERIC RC
+	.DW	HWSTR_RC
+;
 CFG:		; ACTIVE CONFIG VALUES (FROM SELECTED CFGTBL ENTRY)
 PLT		.DB	0	; RomWBW HBIOS platform id
 PORTS:
@@ -670,13 +705,16 @@ FILTYP		.DB	0	; Sound file type (TYPPT2, TYPPT3, TYPMYM)
 TMP		.DB	0	; work around use of undocumented Z80
 
 HBIOSMD		.DB	0	; NON-ZERO IF USING HBIOS SOUND DRIVER, ZERO OTHERWISE
+DELAYMD		.DB	0	; FORCE DELAY MODE IF TRUE (NON-ZERO)
 OCTAVEADJ	.DB	0	; AMOUNT TO ADJUST OCTAVE UP OR DOWN
 
-MSGBAN		.DB	"Tune Player for RomWBW v3.11, 17-Sep-2024",0
-MSGUSE		.DB	"Copyright (C) 2024, Wayne Warthen, GNU GPL v3",13,10
+USEPORTS	.DB	0	; AUDIO CHIP PORT SELECTION MODE
+
+MSGBAN		.DB	"Tune Player for RomWBW v3.13, 28-May-2025",0
+MSGUSE		.DB	"Copyright (C) 2025, Wayne Warthen, GNU GPL v3",13,10
 		.DB	"PTxPlayer Copyright (C) 2004-2007 S.V.Bulba",13,10
 		.DB	"MYMPlay by Marq/Lieves!Tuore",13,10,13,10
-		.DB	"Usage: TUNE <filename>.[PT2|PT3|MYM] [--hbios] [+tn|-tn]",0
+		.DB	"Usage: TUNE <filename>.[PT2|PT3|MYM] [-msx|-rc] [-delay] [--hbios] [+tn|-tn]",0
 MSGBIO		.DB	"Incompatible BIOS or version, "
 		.DB	"HBIOS v", '0' + RMJ, ".", '0' + RMN, " required",0
 MSGPLT		.DB	"Hardware error, system not supported!",0
@@ -700,6 +738,8 @@ HWSTR_MBC	.DB	"NHYODYNE Sound Module",0
 HWSTR_DUO	.DB	"DUODYNE Sound Module",0
 HWSTR_NABU	.DB	"NABU Onboard Sound",0
 HWSTR_HEATH	.DB	"HEATH H8 MSX Module",0
+HWSTR_MSX	.DB	"MSX Standard Ports (A0H/A1H)",0
+HWSTR_RC	.DB	"RCBus Standard Ports (D8H/D0H)",0
 
 MSGUNSUP	.db	"MYM files not supported with HBIOS yet!\r\n", 0
 

Source/Apps/XM/xmhb.z80

@@ -146,6 +146,13 @@ MINIT_UB1:
 	LD	A,E		; Put in A
 	LD	(CPUSPD),A	; Save it
 ;
+	LD	A,(UNIT)	; get current unit specified
+	CP	0FFH		; check for undefined
+	JR	NZ,MINIT_UB2	; if already specified, go ahead
+	XOR	A		; default is unit 0
+	LD	(UNIT),A	; and save it
+;
+MINIT_UB2:
 	JP	UB_INIT		; UNA BIOS init
 ;
 MINIT_RET:
@@ -284,7 +291,7 @@ EXTRA3:
 BIOID	DB	0		; BIOS ID, 1=HBIOS, 2=UBIOS
 CPUSPD	DB	10		; CPU speed in MHz
 RCVSCL	DW	6600		; RECV loop timeout scalar
-UNIT	DB	0		; BIOS serial device unit number
+UNIT	DB	0FFH		; BIOS serial device unit number
 BIOSBID	DB	00H		; BIOS bank id
 ;
 TAG	DB	"RomWBW, 30-May-2020$"
@@ -323,7 +330,7 @@ HB_JPTBL:
 	JP	HB_GETCHR	; get character from modem
 	JP	HB_RCVRDY	; check receive ready
 	JP	HB_SNDRDY	; check send ready
-	JP	HB_SPEED		; get speed value for file transfer time
+	JP	HB_SPEED	; get speed value for file transfer time
 ;
 ;-----------------------------------------------------------------------
 ;
@@ -535,8 +542,10 @@ UB_SENDR:
 	PUSH	BC
 	PUSH	DE
 	PUSH	HL
-	LD	BC,0012H	; unit 0, func 12h (write char)
 	LD	E,A		; character to E
+	LD	A,(UNIT)	; unit
+	LD	B,A		; to B
+	LD	C,12H		; func 12h (write char)
 	RST	08
 	POP	HL
 	POP	DE
@@ -568,7 +577,9 @@ UB_MDIN:
 	PUSH	BC
 	PUSH	DE
 	PUSH	HL
-	LD	BC,0011H	; unit 0, func 12h (write char)
+	LD	A,(UNIT)	; unit
+	LD	B,A		; to B
+	LD	C,11H		; func 11h (read char)
 	RST	08
 	LD	A,E		; byte received to A
 	POP	HL
@@ -586,12 +597,14 @@ UB_RCVRDY:
 	PUSH	BC
 	PUSH	DE
 	PUSH	HL
-	LD	BC,0013H	; unit 0, func 13h (input stat)
+	LD	A,(UNIT)	; unit
+	LD	B,A		; to B
+	LD	C,13H		; func 13h (input stat)
 	RST	08
-	XOR	A		; zero accum		; 4
-	CP	E		; CF means not zero	; 4
-	CCF			; CF means zero		; 4
-	RLA			; ZF means not zero	; 4
+	LD	A,E		; move char count to accum
+	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
@@ -606,12 +619,14 @@ UB_SNDRDY:
 	PUSH	BC
 	PUSH	DE
 	PUSH	HL
-	LD	BC,0014H	; unit 0, func 14h (output stat)
+	LD	A,(UNIT)	; unit
+	LD	B,A		; to B
+	LD	C,14H		; func 14h (output stat)
 	RST	08
-	XOR	A		; zero accum		; 4
-	CP	E		; CF means not zero	; 4
-	CCF			; CF means zero		; 4
-	RLA			; ZF means not zero	; 4
+	LD	A,E		; char avail to send to accum
+	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
@@ -804,7 +819,6 @@ UF_INIT:
 ; Send character on top of stack
 ;
 UF_SENDR:
-
 	POP	AF		; get character to send from stack
 	OUT	(0FFH),A	; write to fifo
 UF_SCDP	EQU	$-1		; data port

Source/Apps/ZDE/Build.cmd

@@ -0,0 +1,35 @@
+@echo off
+setlocal
+
+set TOOLS=../../../Tools
+
+set PATH=%TOOLS%\tasm32;%TOOLS%\zxcc;%PATH%
+
+set TASMTABS=%TOOLS%\tasm32
+
+set CPMDIR80=%TOOLS%/cpm/
+
+:: These variations of ZDE are built here as reference copies.  They
+:: are not copied anywhere else during the build.
+:: The resulting .COM files are manually
+:: copied to /Source/Images/d_ws/u1 as needed.
+
+zxcc ZMAC -ZDE16 -/P -/H || exit /b
+zxcc MLOAD25 ZDE16 || exit /b
+copy /Y zde16.com ..\..\..\Binary\Apps\ZDE\ || exit /b
+
+zxcc ZMAC ZDE16A.PAT -/H || exit /b
+zxcc MLOAD25 ZDE16A=ZDE16.COM,ZDE16A.HEX || exit /b
+copy /Y zde16a.com ..\..\..\Binary\Apps\ZDE\ || exit /b
+
+zxcc ZMAC -ZDE17 -/P -/H || exit /b
+zxcc MLOAD25 ZDE17 || exit /b
+copy /Y zde17.com ..\..\..\Binary\Apps\ZDE\ || exit /b
+
+zxcc ZMAC -ZDE18 -/P -/H || exit /b
+zxcc MLOAD25 ZDE18 || exit /b
+copy /Y zde18.com ..\..\..\Binary\Apps\ZDE\ || exit /b
+
+zxcc ZMAC -ZDE19 -/P -/H || exit /b
+zxcc MLOAD25 ZDE19 || exit /b
+copy /Y zde19.com ..\..\..\Binary\Apps\ZDE\ || exit /b

Source/Apps/ZDE/Clean.cmd

@@ -0,0 +1,9 @@
+@echo off
+setlocal
+
+if exist *.prn del *.prn
+if exist *.err del *.err
+if exist *.rel del *.rel
+if exist *.com del *.com
+if exist *.hex del *.hex
+if exist *.sym del *.sym

Source/Apps/ZDE/Makefile

@@ -0,0 +1,15 @@
+# These variations of ZDE are built here as reference copies.  They
+# are not copied anywhere else during the build.
+# The resulting .COM files are manually
+# copied to /Source/Images/d_ws/u1 as needed.
+
+OBJECTS = zde16.com zde16a.com zde17.com zde18.com zde19.com
+DEST = ../../../Binary/Apps/ZDE
+TOOLS = ../../../Tools
+OTHERS = *.hex
+
+include $(TOOLS)/Makefile.inc
+
+zde16a.com: zde16.com zde16a.pat
+	$(ZXCC) ZMAC zde16a.pat -/H
+	$(ZXCC) MLOAD25 zde16a=zde16.com,zde16a.hex || exit /b

Source/Apps/ZDE/ReadMe.md

@@ -0,0 +1,38 @@
+# ZDE 1.6 (Z-System Display Editor) reconstituted source - MECPARTS 
+11/19/2020
+
+Using the source code of [VDE 2.67]
+(http://www.classiccmp.org/cpmarchives/cpm/Software/WalnutCD/enterprs/cpm/utils/s/vde267sc.lbr)
+as a guide, I've reconstituted the source code for [ZDE 1.6](http://www.classiccmp.org/cpmarchives/cpm/Software/WalnutCD/cpm/editor/zde16.lbr).
+The resulting source code is available from the GitHub repository
+https://github.com/mecparts/zde.
+
+The source has been assembled with:
+
+* Al Hawley's ZMAC: assemble as is.
+* MicroSoft's M80: rename to ZDE16.MAC, un-comment the first two lines
+  and assemble. Use RELHEX to create ZDE16.HEX.
+* ZASM (Cromemco's ASMB): Rename to ZDE16.Z80 and assemble. Use RELHEX
+to create ZDE16.HEX.
+
+Use MLOAD to create ZDE16.COM.
+
+There are still a couple of routines new to ZDE that I haven't figured
+out (yet). But most of them have been sussed out.
+
+## ZDE 1.7 - MECPARTS 11/24/2020
+
+I've fixed the "doesn't preserve timestamps for files larger than a
+single extent under ZSDOS" bug that was present in v1.6. The existing
+ZDENST16.COM program will work with the 1.7 to set the program up for
+your terminal and printer.
+
+## ZDE 1.8 - Lars Nelson 12/3/2022
+
+Added routine to save create time stamp under CP/M Plus since 
+CP/M Plus, unlike ZSDOS, has no native ability to set time stamps.
+
+## ZDE 1.9 - Peter Onion 03/27/2025
+
+- Added support for ANSI PgUp, PgDn, Home, & End.
+- Support ANSI F1 key for menu/error escape.

Source/Apps/ZDE/zde16a.pat

@@ -0,0 +1,102 @@
+; This patch file modifies the officially-distributed .COM file
+; for ZDE Ver 1.6 (copyright by Carson Wilson) to:
+;   - Correct a bug which did not preserve create times when
+;	editing files > 1 extent.
+;   - Use an apparently 'dead' byte in the configuration area as
+;	a configuration flag to allow disabling the 'Auto-Indent'
+;	feature which was always 'on' in ZDE1.6.
+;
+; With the second change, you may configure the 'Auto-Indent'
+; feature to be active (as distributed) or disabled (as this patch
+; is configured) by altering the DB at label 'AIDflt' in the
+; second part of this patch file below.
+;
+; Assemble this file to a .HEX file (example uses ZMAC) as:
+;
+;	ZMAC ZDE16A.PAT /H
+;	
+; then overlay the resulting ZDE16.HEX onto ZDE16.COM with MYLOAD
+; (or equivalent) as:
+;
+;	MYLOAD ZDE.COM=ZDE.COM,ZDE16.HEX
+;
+; The resulting ZDE.COM will be identified as 'ZDE 1.6a' in the
+; text identification string near the beginning of the .COM file.
+;
+; Harold F. Bower, 18 July 2001.
+;
+; CP/M Standard Equates
+;
+BDOS	EQU	0005H
+FCB	EQU	005CH
+DMA	EQU	0080H
+TPA	EQU	0100H
+;
+SDMA	EQU	26		; CP/M Function to set DMA Address
+;
+; Needed locations within ZDE 1.6
+;
+Fill	EQU	TPA+0F8BH	; For Date Patch
+TimBuf	EQU	TPA+3B3FH	;  "    "    "
+;
+VTFlg	EQU	TPA+3ADAH	; For Auto-Ins Patch
+HCRFlg	EQU	TPA+3AE3H	;  "   "    "    "
+LfMarg	EQU	TPA+3AFDH	;  "   "    "    "
+;
+; ----------- Begin Patch File -----------
+;
+; --- Fix Create Time Stamp Preservation Error ---
+
+	  ORG  TPA+0029H
+				; was:
+	DB	'a,  (C)'	;  DB    ', Copr.'
+	  ORG  TPA+2461H
+				; was:
+	LD	(FCB+13),A	;  CALL  ClUsrF
+;
+	  ORG  TPA+2F10H
+				; was:
+	LD	B,4		;  CALL  ClUsrF
+	CALL	ClUsrF		;  LD    DE,TimBuf
+	LD	DE,TimBuf	;  LD    C,SDMA
+	CALL	SetDMA		;  CALL  BDOS
+;
+	  ORG  TPA+30AAH
+				; was:
+	LD	DE,DMA		;  LD    C,SDMA
+SetDMA:	LD	C,SDMA		;  LD    DE,DMA
+;
+	  ORG  TPA+30B4H
+				; was:
+ClUsrF:	XOR	A		;  XOR   A
+	EX	DE,HL		;  LD    (FCB+13),A
+	JP	Fill		;  RET
+;
+; --- Usurp Config Flag for Auto-Insert use, sense on startup ---
+;
+	  ORG  TPA+0057H
+				; was: 0FFH
+AIDflt:	DB	00H		; Set Desired default (0=Off, FF=On)
+;
+	  ORG  TPA+262AH
+				; was:
+	LD	(LfMarg),HL	;  LD    HL,0101H
+	XOR	A		;  LD    (LfMarg),HL
+	LD	(VTFlg),A	;  XOR   A
+	LD	(HCRFlg),A	;  LD    (VTFlg),A
+	NOP			;  LD    (HCRFlg),A
+	LD	A,(AIDflt)	;  DEC   A
+;
+	  ORG  TPA+2711H
+				; was:
+	NOP			;  LD    A,(0157H) {Unknown Use}
+	NOP			;  OR    A
+	NOP			;  JP    Z,Error2
+	NOP
+	NOP
+	NOP
+	NOP
+;
+;------------ End of Patch File ------------
+	END
+

Source/Apps/ZMD/zmdhb.z80

@@ -81,7 +81,7 @@ MINIT1:
 	SUB	'0'		; Got it, convert to binary
 	LD	(UNIT),A	; Save it
 	LD	A,' '		; Space character to accum
-	LD	(HL),A		; Remove numberic from FCB
+	LD	(HL),A		; Remove numeric from FCB
 	JR	MINIT3		; Proceed with initialization
 
 MINIT2:
@@ -181,6 +181,13 @@ MINIT_UB1:
 	LD	A,E		; Put in A
 	LD	(CPUSPD),A	; Save it
 ;
+	LD	A,(UNIT)	; get current unit specified
+	CP	0FFH		; check for undefined
+	JR	NZ,MINIT_UB2	; if already specified, go ahead
+	XOR	A		; default is unit 0
+	LD	(UNIT),A	; and save it
+;
+MINIT_UB2:
 	JP	UB_INIT		; UNA BIOS init
 ;
 MINIT_RET:
@@ -213,7 +220,6 @@ MINIT_RET:
 ;
 	; Return with CPU speed in A
 	LD	A,(CPUSPD)	; A := CPU speed in MHz
-	LD	HL,(RCVSCL)	; HL := receive scalar
 	RET			; and return
 ;
 ;-----------------------------------------------------------------------
@@ -299,6 +305,22 @@ FAIL:
 	CALL	BDOS		; Do it
 	JP	0		; Bail out!
 ;
+; Adjust CPUSPD to account for overhead of HBIOS or UBIOS.  It appears
+; that dividing CPU speed in MHz by 8 results in timeouts that are
+; roughly correct.
+;
+SLOW:
+	LD	A,(CPUSPD)	; Get true CPU speed
+	ADD	A,4		; Add for rounding
+	SRL	A		; Divide by 8
+	SRL	A
+	SRL	A
+	JR	NZ,SLOW1	; If not zero, we are good
+	LD	A,1		; else, make it 1
+SLOW1:
+	LD	(CPUSPD),A	; Save it
+	RET
+;
 ;-----------------------------------------------------------------------
 ;
 ; The following are all dummy routines that are unused because MINIT
@@ -318,7 +340,6 @@ EXTRA3:
 ;
 BIOID	DB	0		; BIOS ID, 1=HBIOS, 2=UBIOS
 CPUSPD	DB	10		; CPU speed in MHz
-RCVSCL	DW	6600		; RECV loop timeout scalar
 UNIT	DB	0FFH		; BIOS serial device unit number
 BIOSBID	DB	00H		; BIOS bank id
 ;
@@ -365,8 +386,7 @@ HB_JPTBL:
 ; HBIOS initialization
 ;
 HB_INIT:
-	LD	HL,2150		; Smaller receive loop timeout scalar
-	LD	(RCVSCL),HL	; ... to compensate for BIOS overhead
+	CALL	SLOW		; Adjust CPUSPD for HBIOS overhead
 ;
 	; Patch SENDR w/ FastPath addresses
 	LD	BC,0F801H	; Get CIO func/data adr
@@ -404,10 +424,6 @@ HB_INIT:
 	RST	08
 	JP	NZ,APIERR	; handle API error
 	LD	(HB_SRFN),HL	; Plug in func adr
-;
-	; Claim 1 MHz CPU to offset overhead of HBIOS
-	LD	A,1
-	LD	(CPUSPD),A	; Save it
 ;
 	LD	HL,HB_JPTBL
 	LD	DE,HB_LBL
@@ -556,14 +572,8 @@ UB_INIT:
 ;
 ; TODO:
 ;   - TEST!!!
-;   - ADJUST RCVSCL?
 ;
-	LD	HL,3000		; Smaller receive loop timeout scalar
-	LD	(RCVSCL),HL	; ... to compensate for BIOS overhead
-;
-	; Claim 1 MHz CPU to offset overhead of HBIOS
-	LD	A,1
-	LD	(CPUSPD),A	; Save it
+	CALL	SLOW		; Adjust CPUSPD for UBIOS overhead
 ;
 	LD	HL,UB_JPTBL
 	LD	DE,UB_LBL
@@ -578,8 +588,10 @@ UB_SENDR:
 	PUSH	BC
 	PUSH	DE
 	PUSH	HL
-	LD	BC,0012H	; unit 0, func 12h (write char)
 	LD	E,A		; character to E
+	LD	A,(UNIT)	; unit
+	LD	B,A		; to B
+	LD	C,12H		; func 12h (write char)
 	RST	08
 	POP	HL
 	POP	DE
@@ -611,7 +623,9 @@ UB_MDIN:
 	PUSH	BC
 	PUSH	DE
 	PUSH	HL
-	LD	BC,0011H	; unit 0, func 12h (write char)
+	LD	A,(UNIT)	; unit
+	LD	B,A		; to B
+	LD	C,11H		; func 11h (read char)
 	RST	08
 	LD	A,E		; byte received to A
 	POP	HL
@@ -629,12 +643,14 @@ UB_RCVRDY:
 	PUSH	BC
 	PUSH	DE
 	PUSH	HL
-	LD	BC,0013H	; unit 0, func 13h (input stat)
+	LD	A,(UNIT)	; unit
+	LD	B,A		; to B
+	LD	C,13H		; func 13h (input stat)
 	RST	08
-	XOR	A		; zero accum		; 4
-	CP	E		; CF means not zero	; 4
-	CCF			; CF means zero		; 4
-	RLA			; ZF means not zero	; 4
+	LD	A,E		; move char count to accum
+	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
@@ -649,12 +665,14 @@ UB_SNDRDY:
 	PUSH	BC
 	PUSH	DE
 	PUSH	HL
-	LD	BC,0014H	; unit 0, func 14h (output stat)
+	LD	A,(UNIT)	; unit
+	LD	B,A		; to B
+	LD	C,14H		; func 14h (output stat)
 	RST	08
-	XOR	A		; zero accum		; 4
-	CP	E		; CF means not zero	; 4
-	CCF			; CF means zero		; 4
-	RLA			; ZF means not zero	; 4
+	LD	A,E		; char avail to send to accum
+	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
@@ -705,9 +723,6 @@ UA_JPTBL:
 ; UART initialization
 ;
 UA_INIT:
-	LD	DE,13000	; receive loop timeout scalar
-	LD	(RCVSCL),DE	; ... for UART RCVRDY timing
-;
 	LD	A,L		; get base I/O port address
 	LD	(UA_SCP),A	; set port value in SENDR
 	LD	(UA_GCP),A	; set port value in GETCHR
@@ -826,9 +841,6 @@ UF_JPTBL:
 ; USB-FIFO initialization
 ;
 UF_INIT:
-	LD	DE,12000	; receive loop timeout scalar
-	LD	(RCVSCL),DE	; ... for UART RCVRDY timing
-;
 	LD	A,L		; get base I/O port address (data port)
 	LD	(UF_SCDP),A	; set data port in SENDR
 	LD	(UF_GCDP),A	; set data port in GETCHR/MDIN
@@ -847,7 +859,6 @@ UF_INIT:
 ; Send character on top of stack
 ;
 UF_SENDR:
-
 	POP	AF		; get character to send from stack
 	OUT	(0FFH),A	; write to fifo
 UF_SCDP	EQU	$-1		; data port

Source/Apps/ZMP/Build.cmd

@@ -7,10 +7,13 @@ set PATH=%TOOLS%\zxcc;%PATH%
 
 set CPMDIR80=%TOOLS%/cpm/
 
-zxcc Z80ASM -ZMO-RW01/H || exit /b
-zxcc MLOAD25 -ZMP.COM=ZMPX.COM,ZMO-RW01 || exit /b
+:: zxcc Z80ASM -ZMO-RW01/LH || exit /b
+zxcc Z80ASM -ZMO-WBW/LH || exit /b
+zxcc MLOAD25 -ZMP.COM=ZMPX.COM,ZMO-WBW || exit /b
 
 copy /Y zmp.com ..\..\..\Binary\Apps\ || exit /b
 copy /Y *.ovr ..\..\..\Binary\Apps\ || exit /b
+copy /Y zmp.cfg ..\..\..\Binary\Apps\ || exit /b
+copy /Y zmp.fon ..\..\..\Binary\Apps\ || exit /b
 copy /Y *.hlp ..\..\..\Binary\Apps\ || exit /b
 copy /Y zmp.doc ..\..\..\Binary\Apps\ || exit /b

Source/Apps/ZMP/Makefile

@@ -1,10 +1,10 @@
-OBJECTS = zmp.com *.ovr *.hlp zmp.doc
+OBJECTS = zmp.com *.ovr zmp.cfg zmp.fon *.hlp zmp.doc
 DEST = ../../../Binary/Apps
 TOOLS = ../../../Tools
 OTHERS = *.hex
-NODELETE = *.ovr zmp.doc *.hlp
+NODELETE = *.ovr zmp.doc zmp.cfg zmp.fon *.hlp
 
 include $(TOOLS)/Makefile.inc
 
-zmp.com: zmo-rw01.hex
-	$(ZXCC) MLOAD25 -ZMP.COM=ZMPX.COM,ZMO-RW01
+zmp.com: zmo-wbw.hex
+	$(ZXCC) MLOAD25 -ZMP.COM=ZMPX.COM,ZMO-WBW

Source/Apps/ZMP/Notes.txt

@@ -27,4 +27,15 @@ as at Aug 23rd, 2021.
   Untested on Ron Murrays ZMP15
 - Space getting short so messages shortened. 
 
---PMS 8/24/2021
+--PMS 8/24/2021
+
+- Refactored overlay to resolve some stack issues.
+- Removed support for setport because it didn't make much sense
+  with ability to specify port on command line.
+- Added an equate (pcfg) which controls whether port configuration
+  is implemented.  It is set to false (no port configuration).
+  because ZMP it is unable to handle   many RomWBW serial port settings 
+  (notably the hard-wired 115200 baud of many RCBus systems).  You 
+  must now used MODE to configure port before starting ZMP.
+
+--WBW 1:55 PM 4/16/2025

Source/Apps/ZMP/zmo-wbw.z80

@@ -0,0 +1,844 @@
+;-----------------------------------------------------------------------------
+;
+;	Overlay for ZMP (Z-Modem Program)
+;
+;	Name	ZMO-WBW.Z80
+;
+;	Dated April 14, 2025
+;
+;	Written by -
+;	  Phil Summers, Wayne Warthen
+;
+;	ROMWBW version using HBIOS and https://github.com/mecparts/zmp
+;       version of zmodem
+;
+;	  - All modem/serial i/o is through RomWBW HBIOS.
+;
+;	  - Data bits, stop bits, and parity are determined by HBIOS.
+;           The ZMP settings will have no effect.  Use RomWBW MODE
+;	    command to set serial port config before starting ZMP.
+;
+;	  - Timing delay calculations based on HBIOS reported CPU speed.
+;
+;	  - The pcfg equate determines whether the overlay will
+;           implement port initialization.  Normally, pcfg will be
+;           set to false because ZMP does not allow configuring
+;           many HBIOS speeds (notably the 115200 baud hardwired
+;           into many RCBus systems).  In this case, you must
+;	    configure the modem port using the RomWBW
+;	    MODE command as desired before starting ZMP.
+;
+;	  - The modem port is assigned to an HBIOS character unit.  By
+;	    default, the modem is assigned to HBIOS character unit 1.
+;           An alternate HBIOS character unit may be specified as a
+;	    parameter on the command line as a single number.  For
+;	    example, the following will assign HBIOS port 3 as the
+;	    ZMP modem port:
+;
+;	    ZMP 3
+;
+;         - The original version of ZMP from Ron Murray allows you to
+;           select from 2 logical modem ports.  This overlay ignores
+;	    any attempt to select ports from within ZMP.  The desired
+;	    modem port should be assigned using the command line
+;	    parameter as described above.
+;
+;         - Teraterm users may need to change the ZmodemWinSize value
+;           to 1024 in the teraterm.ini configuration file.
+;
+;-----------------------------------------------------------------------------
+;
+;
+;	System-dependent code overlay for ZMODEM
+;
+;
+;
+;    Insert your own code as necessary in this file. Code contained herein
+; has been written in Z80 code for use with M80 or SLR. Assemble as follows:
+;
+;	SLR ZMO-xx01/h
+;	MLOAD ZMP.COM=ZMODEM.COM,ZMO-xx01.HEX
+; or
+;	M80 =ZMO-xx01.Z80
+;	RELHEX ZMO-xx01
+;	MLOAD ZMP.COM=ZMODEM.COM,ZMO-xx01.HEX
+;
+;
+;       (Don't use L80 without changing the source for assembly as a
+;         cseg file.)
+;
+;-----------------------------------------------------------------------------
+;
+;
+; Notes on modifying this file:
+;
+;    C requires that functions do not change either index register (IX or IY).
+; If your overlay requires either of these to be changed, ensure they are
+; restored to the original values on return.
+;    Since collecting parameters from C functions can be tricky, only change
+; the parts marked 'Insert your own code here'. Do NOT modify the jump
+; table at the start. Do NOT modify the entry/exit sections of each
+; function. Do NOT pass 'GO'. Do NOT collect $200.
+;    Apart from defining modem functions, this file also defines terminal
+; characteristics. Examples provided are for ADM-3A (with a few of my own
+; additions). Modify to suit your own terminal. An inline print routine
+; is provided for printing strings in the usual way: usage is
+;
+;	call	print
+;	db	'required string',0
+;
+;-----------------------------------------------------------------------------
+;
+;
+;    Don't forget to set your clock speed at the clkspd variable.
+;
+;
+;    If you find your overlay exceeds the maximum size (currently 0400h),
+; you will have to contact me for another version. If too many people need 
+; to do it, we haven't allowed enough room.
+;
+; Ron Murray 15/8/88
+;
+;
+;
+;---------------------------------------------------------------------------
+
+false	equ	0
+true	equ	not false
+
+;------------------------------------------------------------------------------
+
+; User-set variables: 
+
+debug	equ	false		; to allow debugging of overlay with Z8E etc.
+clkspd	equ	8		; Processor clock speed in MHz
+pcfg	equ	false		; Allow ZMP to configure port
+
+;
+;Set the following two equates to the drive and user area which will contain
+;   ZMP's .OVR files, .CFG file, .FON file and .HLP file. Set both to zero
+;   (null) to locate them on the drive from which ZMP was invoked.
+
+overdrive	equ	0	; Drive to find overlay files on ('A'-'P')
+overuser	equ	0	; User area to find files
+
+;------------------------------------------------------------------------------
+
+
+; NOT user-set variables
+
+userdef	equ	0145h		; origin of this overlay
+				; This address should not change with
+				; subsequent revisions.
+mspeed	equ	03ch		; location of current baud rate. 
+ovsize	equ	0400h		; max size of this overlay
+
+fcb	equ	05ch		; primary command line CP/M fcb
+
+	.z80			; use z80 code
+	aseg			; absolute
+
+	 if	debug
+	org	100h		; so you can debug it with cebug, zsid, etc
+	 else
+	org	userdef
+	 endif
+
+
+esc	equ	1bh
+ctrlq	equ	11h
+cr	equ	0dh
+lf	equ	0ah
+bdos	equ	5
+
+
+codebgn	equ	$
+
+;Jump table for the overlay: do NOT change this
+jump_tab:
+	jp	scrnpr		; screen print
+	jp	mrd		; modem read with timeout
+	jp	mchin		; get a character from modem
+	jp	mchout		; send a character to the modem
+	jp	mordy		; test for tx buffer empty
+	jp	mirdy		; test for character received
+	jp	sndbrk		; send break
+	jp	cursadd		; cursor addressing
+	jp	cls		; clear screen
+	jp	invon		; inverse video on
+	jp	invoff		; inverse video off
+	jp	hide		; hide cursor
+	jp	show		; show cursor
+	jp	savecu		; save cursor position
+	jp	rescu		; restore cursor position
+	jp	mint		; service modem interrupt
+	jp	invec		; initialise interrupt vectors
+	jp	dinvec		; de-initialise interrupt vectors
+	jp	mdmerr		; test uart flags for error
+	jp	dtron		; turn DTR on
+	jp	dtroff		; turn DTR OFF
+	jp	init		; initialise uart
+	jp	wait		; wait seconds
+	jp	mswait		; wait milliseconds
+	jp	userin		; user-defined entry routine
+	jp	userout		; user-defined exit routine
+	jp	getvars		; get system variables
+	jp	setport		; set port (0 or 1)
+
+; Spare jumps for compatibility with future versions
+	jp	spare		; spare for later use
+	jp	spare		; spare for later use
+	jp	spare		; spare for later use
+	jp	spare		; spare for later use
+	jp	spare		; spare for later use
+	jp	spare		; spare for later use
+
+; Local storage
+
+hbunit	db	1		; Active HBIOS unit for modem I/O
+cpumhz	db	clkspd		; CPU clock speed in MHz
+
+;
+; Main code starts here
+;
+;Screen print function
+scrnpr:
+				; <== Insert your own code here
+	call	print
+	db	'Screen print not supported.',cr,lf,0
+				; <== End of your own code
+spare:
+	ret
+
+
+; User-defined entry routine: leave empty if not needed
+userin:
+	push	bc
+	push	de
+	push	hl
+	
+	call	print
+	db	cr,lf,'ZMP Overlay for RomWBW HBIOS v1.0',cr,lf,0
+	
+	; Scan and parse default FCB to initialize HBIOS unit if
+	; specified.
+	ld	a,(fcb + 1)	; get parm from fcb
+	cp	' '		; anything there?
+	jr	z,userin1	; if empty, done
+	sub	'0'		; ASCII to binary
+	jr	c,parmerr	; less than 0, parm error
+	cp	10		; >= 10?
+	jr	nc,parmerr	; greater than 9, parm error
+	ld	(hbunit),a	; save it
+
+userin1:
+	call	showcom		; show com port info
+
+	; check that unit is actually available in HBIOS
+	ld	bc,0f800h	; get HBIOS char unit count
+	rst	8		; do it
+	ld	a,(hbunit)	; get active modem unit
+	cp	e		; compare to units available
+	jr	nc,porterr	; unit too high, port error
+
+	if pcfg
+
+	; Force port initialization by setting an invalid
+	; baud rate (mspeed).
+	; speed to an arbitrary value of 8 (9600 baud).
+	ld	a,-1
+	ld	(mspeed),a
+
+	else
+
+	; We don't support port configuration.  Here we set the modem
+	; speed to an arbitrary value of 8 (9600 baud).
+	ld	a,8
+	ld	(mspeed),a
+
+	endif
+
+	
+	ld	bc,0f8f0h	; HBIOS func get CPU info
+	rst	08		; do it, l = CPU speed in MHz
+	ld	a,l		; to accum
+	ld	(cpumhz),a	; and save it for wait loop
+	
+	ld	hl,2
+	call	waithls
+
+	pop	hl
+	pop	de
+	pop	bc
+	ret
+
+parmerr:
+	; Handle a bad parameter
+	call	print		; print error message
+	db	cr,lf,'ZMP parameter error!',cr,lf,0
+	rst	0		; bail out to OS
+
+porterr:
+	; Handle a bad port
+	call	print		; print error message
+	db	cr,lf,'Invalid HBIOS unit for ZMP Modem port!',cr,lf,0
+	rst	0		; bail out to OS
+
+showcom:
+	; Display the HBIOS unit to be used for the ZMP Modem
+	call	print
+	db	cr,lf,'ZMP Modem on HBIOS Unit #',0
+	ld	a,(hbunit)
+	add	a,'0'
+	call	cout
+	call	print
+	db	cr,lf,0
+
+; User-defined exit routine: leave empty if not needed
+userout:
+	ret
+
+;Get a character from the modem: return in HL
+mchin:
+	push	bc
+
+	; <== Insert your own code here
+	ld	a,(hbunit)
+	ld	c,a
+	ld	b,00h
+	rst	08
+	ld	a,e
+	; <== End of your own code
+
+	ld	l,a		; put in HL
+	ld	h,0
+	or	a		; set/clear Z
+	pop	bc
+	ret
+
+;Send a character to the modem
+mchout:
+	ld	hl,2		; get the character
+	add	hl,sp
+	ld	a,(hl)
+	
+	; <== Insert your own code here
+	push	bc
+	ld	e,a
+	ld	a,(hbunit)
+	ld	c,a
+	ld	b,01h
+	rst	08
+	pop	bc
+	; <== End of your own code
+
+	ret			; done
+
+;Test for output ready: return TRUE (1) in HL if ok
+mordy:
+	; <== Insert your own code here
+	push	bc
+	ld	a,(hbunit)
+	ld	c,a
+	ld	b,03h
+	rst	08
+	ld	h,0
+	ld	l,a
+	pop	bc
+	; <== End of your own code
+
+	ld	a,l		; set/clear Z
+	or	a
+	ret
+
+;Test for character at modem: return TRUE (1) in HL if so
+mirdy:
+	; <== Insert your own code here
+	push	bc
+	ld	a,(hbunit)
+	ld	c,a
+	ld	b,02h
+	rst	08
+	ld	h,0
+	ld	l,a
+	pop	bc
+	; <== End of your own code
+
+	ld	a,l		; set/clear Z
+	or	a
+	ret
+
+;Send a break to the modem: leave empty if your system can't do it
+sndbrk:
+	; <== Insert your own code here
+	ld	hl,300		; wait 300 mS
+	call	waithlms
+	; <== End of your own code
+
+	ret
+;
+;Test UART flags for error: return TRUE (1) in HL if error.
+mdmerr:
+	; <== Insert your own code here
+	xor	a		; not implemented
+	; <== End of your own code
+
+	ld	a,l		; set/clear Z
+	or	a
+	ret
+
+
+
+;Turn DTR ON
+dtron:
+				; <== Insert your own code here
+
+				; <== End of your own code
+	ret
+
+
+
+;Turn DTR OFF
+dtroff:
+				; <== Insert your own code here
+
+
+				; <== End of your own code
+	ret
+
+
+
+;Initialise the uart
+init:
+	ld	hl,2		; get parameters
+	add	hl,sp
+	ex	de,hl
+	call	getparm		; in HL
+	ld	(brate),hl	; baud rate
+	call	getparm
+	ld	(parity),hl	; parity
+	call	getparm
+	ld	(data),hl	; data bits (BINARY 7 or 8)
+	call	getparm
+	ld	(stop),hl	; stop bits (BINARY 1 or 2)
+
+	; <== Insert your own code here
+	; using values below
+	; don't forget to load mspeed with the
+	; current brate value if the new rate is
+	; valid. See table of values below.
+
+	push	bc
+
+	; If pcfg is true, attempt to initialize the active
+	; HBIOS unit.  If false, initialization if bypassed with
+	; the assumption that the RomWBW MODE command was used
+	; to initialize the port priot to running ZMP.
+	
+	if pcfg
+
+	call	print
+	db	'Initializing device: ',0
+	call	diport
+
+	ld	a,(hbunit)	; get device type
+	ld	c,a
+	ld	b,06h
+	rst	08
+	or	a		; check if valid
+	jr	nz,initerr
+
+	ld	a,(brate)	; get baud rate to set
+	ld	c,a
+	ld	b,0
+	ld	hl,baudtbl
+	add	hl,bc
+	ld	a,(hl)		; convert to encoded hbios
+	cp	a,-1
+	jr	z,initerr
+
+	push	af
+	ld	a,(hbunit)	; get line characteristics
+	ld	c,a
+	ld	b,05h
+	rst	08
+	ld	a,d		; mask out exisitng
+	and	11100000b	; replace with rate
+	ld	d,a
+	pop	af
+	or	d
+	ld	d,a
+
+	ld	b,04h		; set new
+	ld	a,(hbunit)	; speed
+	ld	c,a
+	rst	08
+	or	a
+	jr	nz,initerr
+
+	ld	a,(brate)	; load mspeed with the current brate value if
+	ld	(mspeed),a	; the new rate is valid. See table of values below.
+
+	call	print
+	db	lf,lf,'Initization completed, device: ',0
+	call	diport
+
+	jr	init_z
+
+initerr:call	print
+	db	lf,lf,'Initization failed, device: ',0
+	call	diport
+
+	jr	init_z
+
+diport:	ld	a,(hbunit)	; Display port
+diport1:add	a,'0'
+	call	cout
+	call	print
+	db	cr,lf,0
+	ld	hl,2
+	call	waithls
+	ret
+	
+	else
+	
+	;call	print
+	;db	cr,lf,'Modem port initialization...',0
+	;ld	hl,2
+	;call	waithls
+
+	ld	b,05h		; HBIOS port reset function
+	ld	a,(hbunit)	; get active modem port
+	ld	c,a		; and put in accum
+	rst	8		; reset port
+	or	a		; check result
+	jr	nz,init1	; if error, handle it
+	ld	a,8		; dummy value for speed
+	ld	(mspeed),a	; save it
+	jr	init_z		; done
+
+init1:
+	; Handle error return from initialization
+	call	print
+	db	cr,lf,'Modem port initialization failed!',cr,lf,0
+	ld	hl,2
+	call	waithls
+
+	jr	init_z
+
+	endif
+
+init_z:
+	pop	bc
+
+	; <== End of your own code
+
+	ret
+;--------------------------------------------------------------------------
+
+stop:	dw	1		; stop bits
+parity:	dw	'N'		; parity
+data:	dw	8		; data bits
+brate:	dw	7		; baud rate:
+
+;--------------------------------------------------------------------------
+;
+;Values of brate for each baud rate
+;
+; 		hb encode	baud rate    brate
+;
+baudtbl:
+	db	-1		; 110		 0	not supported
+	db	2		; 300		 1
+	db	17		; 450		 2
+	db	3		; 600		 3
+	db	-1		; 710		 4	not supported
+	db	4		; 1200		 5
+	db	5		; 2400		 6
+	db	6		; 4800		 7
+	db	7		; 9600		 8
+	db	8		; 19200		 9
+	db	9		; 38400		10
+	db	24		; 57600         11
+	db	10		; 76800         12
+;
+; Set the port. ZMP supplies either 0 or 1 as a parameter. You're on your
+; own here -- your system is bound to be different from any other! You may
+; implement a software switch on all the modem-dependent routines, or perhaps
+; you can have one or two centralised routines for accessing the UARTs and
+; modify the code from this routine to select one or the other. (Who said
+; there was anything wrong with self-modifying code?). If you have only one
+; UART port, or if you don't want to go through all the hassles, just have
+; this routine returning with no changes made. Note that ZMP calls this
+; routine with both values for the port on initialisation.
+;
+; Only originl ZMP calls setport. MECPARTS variant does not.
+;
+; We ignore this call.  Since we are using a command line parameter
+; to specify the desired modem port, it makes no sense.
+;
+setport:
+	ld	hl,2		; get port number
+	add	hl,sp
+	ex	de,hl
+	call	getparm		; in HL (values are 0 and 1)
+
+	; <== Insert your own code here
+
+	; <== End of your own code
+
+	ret
+
+
+;
+;****************************************************************************
+;Video terminal sequences: these are for VT-100: Modify as you wish
+;Cursor addressing: 
+cursadd:
+	ld	hl,2		; get parameters
+	add	hl,sp
+	ex	de,hl
+	call	getparm		; in HL
+	inc	hl
+	ld	(row),hl	; row
+	call	getparm
+	inc	hl
+	ld	(col),hl	; column
+;
+	push	bc
+
+	call	print
+	db	esc,'[',0
+	ld	a,(row)		; row first
+	call	cursconv
+	ld	a,';'
+	call	cout
+	ld	a,(col)		; same for column
+	call	cursconv
+	ld	a,'H'
+	call	cout
+
+	pop	bc
+
+	ret
+;
+cursconv:
+	ld	b,a
+	xor	a
+ca1:	add	a,1
+	daa
+	djnz	ca1
+	ld	(num),a
+	and	0f0h
+	jr	z,ca2
+	srl	a
+	srl	a
+	srl	a
+	srl	a
+	or	'0'
+	call	cout
+ca2:	ld	a,(num)
+	and	0fh
+	or	'0'
+	call	cout
+	ret
+;
+row:	ds	2		; row
+col:	ds	2		; column
+num:	ds	1
+;
+;Clear screen:
+cls:
+	call	print
+	db	esc,"[H",esc,"[2J",0
+	ret
+;
+;Inverse video on:
+invon:
+	call	print
+	db	esc,"[7m",0
+	ret
+;
+;Inverse video off:
+invoff:
+	call	print
+	db	esc,"[m",0
+	ret
+;
+;Turn off cursor:
+hide:
+	call	print
+	db	esc,'[?25l',0
+	ret
+;
+;Turn on cursor:
+show:
+	call	print
+	db	esc,'[?25h',0
+	ret
+;
+;Save cursor position:
+savecu:
+	call	print
+	db	esc,'[7',0
+	ret
+;
+;Restore cursor position:
+rescu:
+	call	print
+	db	esc,'[8',0
+	ret
+
+;****************************************************************************
+
+;Service modem interrupt:
+mint:
+	ret			; handled in HBIOS
+
+;Initialise interrupt vectors:
+invec:
+	ret			; ditto
+
+;De-initialise interrupt vectors:
+dinvec:
+	ret			; ditto
+
+;****************** End of user-defined code ********************************
+;		Do not change anything below here.
+
+;Modem character test for 100 ms
+mrd:
+	push	bc		; save bc
+	ld	bc,100		; set limit
+mrd1:
+	call	mirdy		; char at modem?
+	jr	nz,mrd2		; yes, exit
+	ld	hl,1		; else wait 1ms
+	call	waithlms
+	dec	bc		; loop till done
+	ld	a,b
+	or	c
+	jr	nz,mrd1
+	ld	hl,0		; none there, result=0
+	xor	a
+mrd2:
+	pop	bc
+	ret
+
+; Inline print routine: destroys A and HL
+
+print:
+	ex	(sp),hl		; get address of string
+ploop:
+	ld	a,(hl)		; get next
+	inc	hl		; bump pointer
+	or	a		; done if zero
+	jr	z,pdone
+	call	cout		; else print
+	jr	ploop		; and loop
+pdone:
+	ex	(sp),hl		; restore return address
+	ret			; and quit
+
+;
+;Output a character in A to the console
+;
+cout:
+	push	bc		; save regs
+	push	de
+	push	hl
+	ld	e,a		; character to E
+	ld	c,2
+	call	bdos		; print it
+	pop	hl
+	pop	de
+	pop	bc
+	ret
+
+
+;Wait seconds
+wait:
+	ld	hl,2
+	add	hl,sp
+	ex	de,hl		; get delay size
+	call	getparm
+				; fall thru to..
+;Wait seconds in HL
+waithls:
+	push	hl		; save loop control
+	ld	hl,1000		; 1000ms = 1 second
+	call	waithlms
+	pop	hl		; restore loop control
+	dec	hl
+	ld	a,h
+	or	l
+	jr	nz,waithls
+	ret
+
+
+
+;Wait milliseconds
+mswait:
+	ld	hl,2
+	add	hl,sp
+	ex	de,hl		; get delay size
+	call	getparm
+				; fall thru to..
+;Wait milliseconds in HL
+waithlms:
+	; burn 1000us (1ms)
+	ld	a,(cpumhz)	
+	ld	e,a
+hlms1:
+	; burn 1000 t-states
+	; 50 * 20 = 1000 t-states
+	ld	d,50
+hlms2:
+	nop			; 4
+	dec	d		; 4
+	jr	nz,hlms2	; 12	20
+
+	dec	e
+	jr	nz,hlms1
+
+	dec	hl
+	ld	a,h
+	or	l
+	jr	nz,waithlms
+
+	ret
+
+
+
+
+
+
+
+
+;Get next parameter from (de) into hl
+getparm:
+	ex	de,hl		; get address into hl
+	ld	e,(hl)		; get lo
+	inc	hl
+	ld	d,(hl)		; then hi
+	inc	hl		; bump for next
+	ex	de,hl		; result in hl, address still in de
+	ret
+
+;Get address of user-defined variables
+
+getvars:
+	ld	hl,uservars
+	ret
+
+uservars:
+	dw	overdrive	; .OVR etc. drive/user
+	dw	overuser
+
+
+	 if	($ - codebgn) gt ovsize
+toobig:	jp	errval		; Overlay too large!
+	 endif
+
+	end
+

Source/Apps/ZMP/zmp-blnk.z80

@@ -26,11 +26,11 @@
 ; has been written in Z80 code for use with M80 or SLR. Assemble as follows:
 ;
 ;	SLR ZMO-xx01/h
-;	MLOAD ZMP.COM=ZMODEM.COM,ZMO-xx01.HEX
+;	MLOAD ZMP.COM=ZMPX.COM,ZMO-xx01.HEX
 ; or
 ;	M80 =ZMO-xx01.Z80
 ;	RELHEX ZMO-xx01
-;	MLOAD ZMP.COM=ZMODEM.COM,ZMO-xx01.HEX
+;	MLOAD ZMP.COM=ZMPX.COM,ZMO-xx01.HEX
 ;
 ;
 ;       (Don't use L80 without changing the source for assembly as a
@@ -570,4 +570,3 @@ toobig:	jp	errval		; Overlay too large!
 	 endif
 
 	end
-

Source/Apps/ZMP/zmp15+-.new

@@ -12,6 +12,10 @@ awhile (some, a few decades):
 * In keyboard macros, ! translates to a CR now, not CR/LF.
 * \ escapes ! and ~ so those literal characters can be used in
   keyboard macros.
+* Waits in keyboard macros now allow characters from the modem to
+  be handled.
+* Keys in keyboard macros now have 25ms waits between them as to
+  not overrun the remove system.
 * Long distance access code has been removed.
 * Quick dialing letters limited to A-T.
 
@@ -23,5 +27,5 @@ version in ZMP15.LBR. So, to quote the original author,
 new one with the config option.  There have again been changes to 
 the format of this file."
 
-June 7, 2021
-
+August 15, 2023
+

Source/Apps/assign/assign.asm

@@ -11,6 +11,8 @@
 ;     ex: ASSIGN		(display all active drive assignments)
 ;         ASSIGN /?		(display version and usage)
 ;         ASSIGN /L		(display all possible devices)
+;         ASSIGN /B=OPTS	(perform assignment based on options)
+;         ASSIGN C:		(display assignment for C:)
 ;         ASSIGN C:=D:		(swaps C: and D:)
 ;         ASSIGN C:=FD0:	(assign C: to floppy unit 0)
 ;         ASSIGN C:=IDE0:1	(assign C: to IDE unit0, slice 1)
@@ -33,6 +35,9 @@
 ;   2023-06-19 [WBW] Update for revised DIODEVICE API
 ;   2023-09-19 [WBW] Added CHUSB & CHSD device support
 ;   2023-10-13 [WBW] Fixed DPH creation to select correct DPB
+;   2024-12-17 [MAP] Added new /B=opt feaure to assign drives
+;   2024-12-21 [MAP] Added CBIOS heap estimation to /B to prevent
+;                    overflow when the drives are finally added
 ;_______________________________________________________________________________
 ;
 ; ToDo:
@@ -52,6 +57,7 @@ bnksel	.equ	$FFF3		; HBIOS bank select vector
 stamp	.equ	$40		; loc of RomWBW CBIOS zero page stamp
 ;
 #include "../../ver.inc"
+#include "../../HBIOS/hbios.inc"
 ;
 ;===============================================================================
 ; Code Section
@@ -80,7 +86,7 @@ start:
 	call	init		; initialize
 	jr	nz,exit		; abort if init fails
 ;
-	; do the real work 
+	; do the real work
 	call	process		; parse and process command line
 	jr	nz,exit		; done if error or no action
 ;
@@ -160,12 +166,14 @@ init:
 	ld	e,(hl)		; dereference HL
 	inc	hl		; ... into DE to get
 	ld	d,(hl)		; ... DPB map pointer
-	ld	(dpbloc),de	; and save it	
+	ld	(dpbloc),de	; and save it
 ;
 	; test for CP/M 3 and branch if so
 	ld	a,(cpmver)	; low byte of cpm version
 	cp	$30		; CP/M 3.0?
 	jp	nc,initcpm3	; handle CP/M 3.0 or greater
+;
+; CP/M 2.2 (CBIOS) initialization
 ;
 	; make a local working copy of the drive map
 	ld	hl,(maploc)	; copy from CBIOS drive map
@@ -215,6 +223,13 @@ initx:
 	add	hl,de		; adjust
 	ld	(heaplim),hl	; save it
 ;
+	; establish remaining heap, used for estimation during /b
+	ld	de,(maploc)	; start of free heap space
+	or	a		; clear carry
+	sbc	hl,de		; upper heap - start of heap = size
+	ld	de,SIZ_DBUF	; 128 bytes for directory buffer
+	sbc	hl,de		; less directory buffer overhead
+	ld	(heaprem),hl	; save heap size that can be allocated
 #if 0
 	ld	a,' '
 	call	crlf
@@ -229,7 +244,9 @@ initx:
 	call	prtchr
 	ld	bc,(heaplim)
 	call	prthexword
-	
+	call	prtchr
+	ld	bc,(heaprem)
+	call	prthexword
 #endif
 ;
  	; return success
@@ -253,7 +270,7 @@ initcpm3:
 	; switch to sysbnk
 	ld	a,($FFE0)	; get current bank
 	push	af		; save it
-	ld	bc,$F8F2	; HBIOS Get Bank Info
+	ld	bc,BC_SYSGET_BNKINFO ; HBIOS Get Bank Info
 	rst	08		; call HBIOS, E=User Bank
 	ld	a,e		; HBIOS User Bank
 	call	bnksel		; HBIOS BNKSEL
@@ -282,7 +299,7 @@ initc3:
 	inc	de		; bump to slice
 	ld	a,(hl)		; get slice from drvtbl
 	ld	(de),a		; save slice to drvmap
-initc4:	
+initc4:
 	inc	de		; bump past slice
 	inc	de		; skip
 	inc	de		; ... dph
@@ -399,6 +416,8 @@ option:
 	ld	a,(hl)		; get it
 	cp	'?'		; is it a '?' as expected?
 	jp	z,usage		; yes, display usage
+	cp	'B'		; assign Boot Hard Drive Slices
+	jp	z,bootdr	; yes, assign boot drive slices
 	cp	'L'		; is it a 'L', display device list?
 	jp	z,devlist	; yes, display device list
 	jp	errprm		; anything else is an error
@@ -438,9 +457,8 @@ devlist:
 	or	a		; set flags
 	jr	nz,devlstu	; do UNA mode dev list
 ;
-	ld	b,$F8		; hbios func: sysget
-	ld	c,$10		; sysget subfunc: diocnt
-	rst	08		; call hbios, E := device count 
+	ld	bc,BC_SYSGET_DIOCNT ; hbios func: sysget subfunc: diocnt
+	rst	08		; call hbios, E := device count
 	ld	b,e		; use device count for loop count
 	ld	c,0		; use C for device index
 devlist1:
@@ -486,6 +504,496 @@ devlstu1:
 	djnz	devlstu1	; loop as needed
 	ret			; return
 ;
+; -------------------------------------------------
+; /B=XXX - Bootup drive Assignment
+;
+; Variable used across the entire bootdr: function
+; - (mapwrk) working table of assignments
+; - (mapadr) pointer to next drive assignment in mapwrk
+; - (dstdrv) Drive letter of next assigment 0-15
+; - (tmpstr) List of Option letters being processed
+;
+bootdr:
+	; command line processing mapping options into (tmpstr)
+	inc	hl		; next char after the /B expect a delimeter
+	call	nonblank	; skip ws
+	cp	'='
+	inc	hl
+	call	nonblank	; skip ws
+	call	getalpha	; options string into (tmpstr)
+;
+	; defaulting loop for normal disk boot starting at A:
+	ld	hl,mapwrk	; DE := working drive map
+	ld	(mapadr),hl	; save pointer o next drive maping
+	xor	a		; next dest drive letter start at A:
+	ld	(dstdrv),a
+bootdr1:
+	; process next letter in the cmd line options
+	ld	a,(tmpstr)	; next letter
+	res	5,a		; FORCE UPPERCASE (IMPERFECTLY)
+	; Case Statement
+	ld	hl,bootdr2	; return address for below JP
+	push	hl		; when RET from below JP, return
+	cp	'A'
+	jp	z,bootdra	; RAM
+	cp	'B'
+	jp	z,bootdrb	; BOOT
+	cp	'F'
+	jp	z,bootdrf	; FLOPPY
+	cp	'H'
+	jp	z,bootdrh	; HARD DRIVES (improved)
+	cp	'L'
+	jp	z,bootdrl	; HARD DRIVES (legacy)
+	cp	'O'
+	jp	z,bootdro	; ROM
+	cp	'P'
+	jp	z,bootdrp	; PRESERVE/KEEP (SKIP)
+	cp	'S'
+	jp	z,bootdrs	; SLICES (OFF BOOT DRIVE)
+	cp	'X'
+	jp	z,bootdrx	; UNASSIGN
+	cp	'Z'
+	jp	z,bootdrz	; UNASSIGN ALL REMAINING
+	; no valid option was found just ignore and continue
+	; potentially signal an error
+	pop	hl		; remove the return address, since no match
+bootdr2:
+	jr	c,bootdr4	; if overflowed, exhaused drives then error
+	; bump to next letter in tmp str, by shifing string left in buffer
+	ld	hl,tmpstr+1	; copy from +1 in buffer
+	ld	a,(hl)		; copy next char for Z check
+	ld	de,tmpstr	; copy down to +0 in buffer
+	ld	bc,16		; buffer is 16 bytes
+	ldir
+	or	a		; set flags based on next char
+	jr	nz,bootdr1	; loop if character found
+bootdr3:
+	xor	a		; success
+	ret			; finished
+bootdr4:
+	or	$ff		; failure
+	ret			; finished
+;
+; -------------------------------------------------
+; /B=XXX AGORITHMS START HERE
+;
+; PRESERVE, SKIP 1, JUST LOOP
+bootdrp:
+	; determine the drive being preserved, calc estimate
+	ld	hl,(mapadr)	; address of next map entry in table. Indirect
+	ld	a,(hl)		; the unit number of drive being skipped
+	call	bootdest	; for unit in A, calc the heap estimate -> DE
+	; subtract bytes from estimate, not not checking for overflow
+	ld	hl,(heaprem)	; remaing heap estimate
+	or	a		; clear carry
+	sbc	hl,de		; subtract slice from heap estimate
+	ld	(heaprem),hl	; update estimate based on adding slice
+	; and skip to next drive
+	call	bootinc		; Skip to next drive letter
+	ret			; Finished
+;
+; EXCLUDE / UNASSIGNED / GAP
+bootdrx:
+	ld	a,$FF		; $FF (unit) signal a drive not assigned
+	ld	(unit),a	; set unit
+	xor	a		; slice 0
+	ld	(slice),a	; save as slice to assign.
+	ld	hl,SIZ_DMAP	; heap used is 4 bytes for drvmap entry only
+	ld	(slicmem),hl	; save estmate so heap space can be counted
+	call	bootadd 	; assign the slice
+	ret			; Finished, returning error
+;
+; EXCLUDE / UNASSIGNED - ALL REMAINING
+bootdrz:
+	ld	a,$FF		; $FF (unit) signal a drive not assigned
+	ld	(unit),a	; set unit
+	xor	a		; slice 0
+	ld	(slice),a	; save as slice to assign.
+	ld	hl,0		; all remainging drives consume 0 bytes
+	ld	(slicmem),hl	; save estmate so heap space can be counted
+bootdrz1:
+	call	bootadd 	; assign the slice
+	jr	nc,bootdrz1	; NC still can continue to allocate
+	xor	a		; success
+	ret			; Finished
+;
+; BOOT DRIVE
+bootdrb:
+	ld	bc,BC_SYSGET_BOOTINFO	; HBIOS SysGet; BootInfo
+	rst	08		; Get boot disk unit/slice in DE
+	ld	a,e		; boot slice returned in E
+	ld	(slice),a	; save as slice to assign.
+	ld	a,d		; boot unit id returned in D
+	ld	(unit),a	; save as unit number
+	call	bootdest	; calc estimat of unit A store in (sliceem)
+	call	bootadd 	; add the boot drive slice
+	ret			; Finished, returning error
+;
+; RAM DRIVE
+bootdra:
+	ld	a,$FF		; specific mask to include all BITS
+	ld	(atrmask),a	; mask for device attributes
+	ld	a,%00010101	; specific mask for RAM DRIVE.
+	ld	(atrcomp),a	; compare to after mask
+	ld	hl,EST_MD	; estimate of heap used. for RAM ROM
+	ld	(slicmem),hl	; save estmate so heap space can be counted
+	call	bootadds	; do single slice assignment
+	ret			; Finished, returning error
+;
+; ROM DRIVE
+; Note: if MDFFENABLE is enabled, this wont select the ROM since the
+; driver returns MD_AFSH (%00010111), and we cannot generalise this mask
+bootdro:
+	ld	a,%11111101	; ROM mask, excluding Bit 1, which varies
+	ld	(atrmask),a	; mask for device attributes
+	ld	a,%00010100	; for values "MD_AROM", "MD_AFSH"; Att="000101x0"
+	ld	(atrcomp),a	; compare to after mask
+	ld	hl,EST_MD	; estimate of heap used. for RAM ROM
+	ld	(slicmem),hl	; save estmate so heap space can be counted
+	call	bootadds	; do single slice assignment
+	ret			; Finished, returning error
+;
+; FLOPPY DRIVE(S)
+bootdrf:
+	ld	a,%11000000	; device parameters (Removable Floppy)
+	ld	(atrmask),a	; mask for device attributes
+	ld	(atrcomp),a	; compare to after mask
+	ld	hl,EST_FD	; estimate of heap used. for Floppy
+	ld	(slicmem),hl	; save estmate so heap space can be counted
+	call	bootadds	; do single slice assignment
+	ret			; Finished, returning error
+;
+; SLICES (From Boot Drive Only)
+bootdrs:
+	; find the boot drive, save unit /slice number
+	ld	a,(mapwrk)	; boot drive unit number
+	ld	(unit),a	; save as unit number to assign
+	ld	hl,EST_HD	; estimate of heap used, for HDD
+	ld	(slicmem),hl	; save estmate so heap space can be counted
+	ld	a,0		; starting slice number
+bootdrs1:
+	; A is next slice to assign when entering here
+	ld	(slice),a	; save as slice to assign.
+	call	bootadd 	; add the slice, return Z - past the last drive
+	jr	c,bootdrs2	; drives exhaused, finish up
+	ld	a,(slice)	; get the slice just consumed
+	inc	a		; next slice
+	JR	bootdrs1	; loop round
+bootdrs2:
+	xor	a		; success
+	ret
+;
+; HARD DRIVE(S) - Improved from CBIOS - More Drives
+bootdrh:
+	ld	a,%00100000	; device parameters (High Capacity)
+	ld	(atrmask),a	; mask for device attributes
+	ld	(atrcomp),a	; compare to after mask
+	ld	hl,EST_HD	; estimate of heap used, for HDD
+	ld	(slicmem),hl	; save estmate so heap space can be counted
+	; count the number of drives matching criteria
+	call	bootcnt		; return Drive count in A
+	; compute Slices per volume from drv count in A
+	call	bootdrh1	; return SPV in A
+	ld	(slicec),a	; slice per volume count
+	; do the drive assignment
+	call	bootaddn	; do the drive assignment
+	ret			; Finished returning error
+;
+; Input A contains device count return SPV (slices per volume) in A
+bootdrh1:
+	ld	e,a		; divide by by e, the number of devices
+	ld	a,(dstdrv)	; next destination drive to map, 0-15
+	ld	d,a		; put it in d
+	ld	a,16 		; total number of drives
+	sub	d		; less assigned = remaining
+	; above assumes we have space remaining on heap for all drives
+	; ideally should take A=Min( A, (heaprem)/EST_HD ) before division
+	ld	d,a		; divides d - remaing drives
+; The following routine divides d by e and places the quotient in d and the remainder in a
+; https://wikiti.brandonw.net/index.php?title=Z80_Routines:Math:Division
+	xor	a
+	ld	b, 8
+bootdrh2:
+	sla	d
+	rla
+	cp	e
+	jr	c, $+4
+	sub	e
+	inc	d
+	djnz	bootdrh2
+	ld	a,d		; end of the division the quotiant in A
+	ret			; return it
+;
+; HARD DRIVE(S) - Legacy (from CBIOS)
+bootdrl:
+	ld	a,%00100000	; device parameters (High Capacity)
+	ld	(atrmask),a	; mask for device attributes
+	ld	(atrcomp),a	; compare to after mask
+	ld	hl,EST_HD	; estimate of heap used, for HDD
+	ld	(slicmem),hl	; save estmate so heap space can be counted
+	;
+	; count the number of drives matching criteria
+	call	bootcnt		; return Drive count in A
+	;
+	; compute Slices per volume from drv count in A
+	call	bootdrl1	; return SPV in A
+	ld	(slicec),a	; slice per volume count
+	;
+	; do the drive assignment
+	call	bootaddn	; do the drive assignment
+	xor	a		; Success
+	ret			; Finished
+;
+; Input A contains device count return SPV (slices per volume) in A
+bootdrl1:
+	ld	e,8		; ASSUME 8 SLICES PER VOLUME
+	dec	a		; DEC ACCUM TO CHECK FOR COUNT = 1
+	jr	z,bootdrl2	; YES, SKIP AHEAD TO IMPLEMENT 8 HDSPV
+	ld	e,4		; NOW ASSUME 4 SLICES PER VOLUME
+	dec	a		; DEC ACCUM TO CHECK FOR COUNT = 2
+	jr	z,bootdrl2	; YES, SKIP AHEAD TO IMPLEMENT 4 HDSPV
+	ld	e,2		; IN ALL OTHER CASES, WE USE 2 HDSPV
+bootdrl2:
+	ld	a,e
+	ret
+;
+; -------------------------------------------------
+; Memory allocation estimates for each device type
+;
+SIZ_DBUF	.EQU 	128		; actual size of directory buffer
+SIZ_DPH		.EQU	20		; actual size of a DPH structure
+SIZ_DMAP	.EQU	4		; actual bytes per drvmap entry
+;
+EST_FIXED	.EQU	SIZ_DPH+SIZ_DMAP ; overhead for all assignments
+;
+EST_MD		.EQU	EST_FIXED + 24	; estimated size for ram/rom
+EST_FD		.EQU	EST_FIXED + 192 ; estimated size for floppy
+EST_HD		.EQU	EST_FIXED + 256 ; estimated size hdd (CKS/ALS)
+;
+; -------------------------------------------------
+; /B=XXX - General Purpose Functions
+;
+; Determine Slice Estimate for Unit in A reg
+; storing estimate in (slicmem), and DE
+;
+bootdest:
+	; is it assigned
+	ld	c,a		; store unit (passed in A) for hbios call
+	ld	de,SIZ_DMAP	; assume unassigned, 4 bytes for drvmap
+	cp	$FF		; unassigned?
+	jr	z,bootdest2	; finished at this point.
+	; check for UNA mode, before calling HBIOS
+	ld	a,(unamod)	; get UNA mode flag, and set Flags
+	or	a		; if UNA Mode then dont do hbios lookup
+	jr	nz,bootdest1	; use worst case scenario (future una call)
+	; determine device type by hbios lookup
+	ld	b,BF_DIODEVICE  ; get device info
+	rst	08		; Note C was set above
+	; now work out the bytes to allocate
+	ld	a,d		; device type to A
+	ld	de,EST_MD	; assume md size
+	cp	DIODEV_MD	; ram/rom MD device
+	jr	z,bootdest2	; finished at this point
+	ld	de,EST_FD	; assume floppy
+	cp	DIODEV_FD	; floppy device
+	jr	z,bootdest2	; finished at this point
+bootdest1:
+	ld	de,EST_HD	; otherwise assume HD
+bootdest2:
+	ld	(slicmem),de
+	ret
+;
+; Count Number of Devices
+; (atrmask) mask the device attribtes
+; (atrcomp) compare to set zero flag
+; return A number of drives mathing the attributes
+bootcnt:
+	; loop thru hbios units looking for device type/unit match
+	ld	bc,BC_SYSGET_DIOCNT ; hbios func: sysget subfunc: diocnt
+	rst	08		; call hbios, E := device count
+	ld	b,e		; use device count for loop count
+	ld	c,0		; use C for device index C = 0
+	ld	l,0		; will contain the drive count
+bootcnt1:
+	call	bootmat		; perform the match on device C, Z if match
+	jr	nz,bootcnt2	; not matching, skip and continue loop
+	inc	l		; same so incrment the counter
+bootcnt2:
+	inc	c		; next drive letter
+	djnz	bootcnt1	; loop
+	ld	a,l		; return the count in A register
+	or	a		; ensure registers are set correctly
+	ret			; Finished
+;
+; Loop though all devices add a single slice based on device attributes
+; See method below for documentation. Noting (slice) is defaulted to 1
+bootadds
+	ld	a,1
+	ld	(slicec),a
+	; fall through to bootaddn
+;
+; Loop though all devices add N slice(s) based on device attributes
+; (atrmask) mask the device attribtes
+; (atrcomp) compare to set zero flag
+; (slicec) number of slices
+; return C flag
+;   C have expended all drives
+;  NC still can continue to allocate
+;   Z otherwise successfully completed
+bootaddn
+	; loop thru hbios units looking for device type/unit match
+	ld	bc,BC_SYSGET_DIOCNT ; hbios func: sysget subfunc: diocnt
+	rst	08		; call hbios, E := device count
+	ld	b,e		; use device count for loop count
+	ld	c,0		; use C for device index C = 0
+bootaddn1:
+	call	bootmat		; perform the match on device C, Z if match
+	jr	nz,bootaddn4	; not same skip volume, continue loop
+	; save the disk unit
+	ld	a,c		; get the unit id back into A
+	ld	(unit),a	; unit to add, if we add it.
+	; setup inner loop
+	push	bc		; save loop control for outer loop
+	ld	a,(slicec)	; count of slices to assign
+	ld	b,a		; use device count for loop count
+	ld	c,0		; use C for slice index slice = 0
+bootaddn2:
+	; entering here C contains updated slice
+	ld	a,c		; slice number
+	ld 	(slice),a	; slice number
+	; assign the slice and loop
+	push	bc		; save loop control
+	call	bootadd 	; add the slice
+	pop	bc		; restore loop
+	jr	c,bootaddn3	; if bootadd, ran out of drives to allocate
+	inc	c		; next slice
+	djnz	bootaddn2	; inner loop
+bootaddn3:
+	; finish inner loop for next disk unit
+	pop	bc		; restore loop control for outer
+	ret	c		; return if no drives left to allocate
+bootaddn4:
+	; continue looping to next unit
+	inc	c		; next device
+	djnz	bootaddn1	; outer loop
+	xor	a		; success
+	ret			; Finished
+;
+; Add a Single Drive.
+; based on (unit) and (slice) variables
+; This routine will skip if drive already assigned
+; return C flag
+;   C have expended all drives
+;  NC still can continue to allocate
+bootadd:
+	; check we are not already past last (P:) drive
+	ld	hl,dstdrv	; destination drive
+	ld	a,15
+	cp	(hl)		; C set if >= 16
+	ret	c		; Return with carry, cannot assign.
+	; do we need to perform duplicate check
+	ld	a,(dstdrv)	; next destination drive to map, could be A: (=0)
+	or	a		; is it A:
+	jr	z,bootadd1	; nothing to check  we are assigning the A: drive
+	; perform duplicate check before assignment
+	ld	b,a		; B number of entries to check
+	ld	hl,mapwrk	; HL point to working drive map table to compare to
+	ld	de,unit		; DE comparison, unit/slice are ordered (psudo mapwrk entry)
+	call	valid3		; perform a duplicate check (REUSED)
+	jr	z,bootinc1	; Z - found a duplicate, exit out
+;
+bootadd1:
+	; check we have enough heap to allocate
+	ld	hl,(heaprem)	; remaing heap estimate
+	ld	de,(slicmem)	; memory alloc per drive
+	or	a		; clear carry
+	sbc	hl,de		; subtract slice from heap estimate
+	ret	c		; overflow (not enough heap) so abort
+	ld	(heaprem),hl	; update estimate based on sub of mem
+	; actually assign it.
+	ld	hl,(mapadr)	; address of next map entry in table
+	ld	a,(unit)	; the unit number
+	ld	(hl), a		; write unit number to Table
+	inc	hl
+	ld	a,(slice)	; the slice
+	ld	(hl), a		; write slice to the table
+	; show the new assignment
+	push	bc
+	push	de
+	ld	a,(dstdrv)	; destination drive
+	call	showone		; show it's new value
+	pop	de
+	pop	bc
+	; signal the change has occured
+	ld	hl,modcnt	; point to mod count
+	inc	(hl)		; increment it
+	; fall through to bootinc and inc target drive
+;
+; Increment to the next drive (A-P)
+; return C flag
+;   C have expended all drives
+;  NC still can continue to allocate
+bootinc:
+	; check we are not already past last (P:) drive
+	ld	hl,dstdrv	; destination drive
+	ld	a,15
+	cp	(hl)		; C set if >= 16
+	ret	c		; Return with carry, cannot increment.
+	; actually increment it
+	inc	(hl)		; increment destination drive (A-P)
+	ld	hl,(mapadr)	; address in working assignment table (mapwrk)
+	ld	bc,4
+	add	hl,bc
+	ld	(mapadr),hl	; move address to next location in map
+bootinc1:
+	ld	hl,dstdrv	; destination drive
+	ld	a,15
+	cp	(hl)		; C set if >= 16
+	ret
+;
+; Does Disk Unit Meet matching Criteria
+; pass in C which is the unit, ret Z if matching:
+;  * (atrmask) mask the device attribtes
+;  * (atrcomp) compare to set zero flag
+; registers BC DE HL are preserved
+bootmat:
+	push	hl
+	push	de
+	push	bc		; preserve
+	; get the disk unit attributes
+	ld	b,BF_DIODEVICE	; hbios func: diodevice C:= DISK UNIT
+	rst	08		; call hbios, C := device attributes
+	; do the attribute comparison
+	ld	a,(atrmask)	; attribute bit mask
+	and	c		; mask with device attributes from hbios
+	ld	c,a		; move value back to c
+	ld	a,(atrcomp)	; value parameter to compare with
+	cp	c		; do the comparison : Z if matching
+	jr	nz,bootmat3	; not matching, just return, NZ go no further
+	; Attributes match - did caller request high capacity device
+	bit	5,a		; high capacity flag passed in (atrcomp)
+	jr	NZ,bootmat1	; IF hig capacity, test if hd is onlne
+	; Attributes match - but NOT high capacity
+	xor	a		; Result = Z
+	jr	bootmat3	; and return
+bootmat1:
+	; Attributes match - and IS high capacity
+	pop	bc		; get C para back (unit)
+	push	bc
+	; Sense Media
+	ld	b,BF_DIOMEDIA	; HBIOS FUNC: SENSE MEDIA
+	ld	e,1		; PERFORM MEDIA DISCOVERY
+	rst	08		; DO IT
+	; returns NZ if error (no media), and Z if no error (media detected)
+	; can just return this flag
+bootmat3:
+	pop	bc
+	pop	de
+	pop	hl		; restore and return
+	ret
+;
+; ----------------------------------------------------------------
+;
 ; Install the new drive map into CBIOS
 ;
 install:
@@ -546,7 +1054,7 @@ install3:
 	ld	(heaptop),de	; DE has next byte available
 ;
 	; allocate directory buffer
-	ld	hl,128		; size of directory buffer
+	ld	hl,SIZ_DBUF	; size of directory buffer
 	call	alloc		; allocate the space
 	jp	c,instovf	; handle overflow error
 	ld	(dirbuf),hl	; ... and save in dirbuf
@@ -574,8 +1082,7 @@ dph_init2:
 	ld	a,(hl)		; unit to A
 	push	bc		; save loop control
 	push	hl		; save drive map pointer
-	;ld	hl,16		; size of a DPH structure
-	ld	hl,20		; size of a DPH structure
+	ld	hl,SIZ_DPH	; size of a DPH structure
 	call	alloc		; allocate space for dph
 	jp	c,instovf	; handle overflow error
 	push	hl		; save DPH location
@@ -607,9 +1114,15 @@ dph_init3:
 	call	prtdecw		; print it
 	ld	de,msgmem	; add description
 	call	prtstr		; and print it
+;
+#if 0
+	call	crlf
+	ld	bc,(heaprem)
+	call	prthexword
+#endif
 ;
 	call	drvrst		; perform BDOS drive reset
-;	
+;
 	xor	a		; signal success
 	ret			; done
 ;
@@ -653,25 +1166,25 @@ makdphuna1:	; handle ram/rom
 makdphwbw:	; determine appropriate dpb (WBW mode, unit number in A)
 ;
 	ld	c,a		; unit number to C
-	ld	b,$17		; HBIOS: Report Device Info
+	ld	b,BF_DIODEVICE	; 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?
+	cp	DIODEV_MD	; 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
+	ld	e,MID_MDROM	; assume rom
 	cp	$01		; rom?
 	jr	z,makdph0	; yes, jump ahead
-	ld	e,2		; otherwise ram
+	ld	e,MID_MDRAM	; otherwise ram
 	jr	makdph0		; jump ahead
-makdph00:	
-	ld	e,6		; assume floppy
-	cp	$01		; floppy?
+makdph00:
+	ld	e,MID_FD144	; assume floppy
+	cp	DIODEV_FD	; floppy?
 	jr	z,makdph0	; yes, jump ahead
-	ld	e,3		; assume ram floppy
-	cp	$02		; ram floppy?
+	ld	e,MID_RF	; assume ram floppy
+	cp	DIODEV_RF	; ram floppy?
 	jr	z,makdph0	; yes, jump ahead
-	ld	e,4		; everything else is assumed to be hard disk
+	ld	e,MID_HD	; everything else is assumed to be hard disk
 	jr	makdph0		; yes, jump ahead
 ;
 makdph0:
@@ -689,7 +1202,7 @@ makdph1:
 	pop	hl		; hl := start of dph
 	ld	a,8		; size of dph reserved area
 	call	addhl		; leave it alone (zero filled)
-;	
+;
 	ld	bc,(dirbuf)	; address of dirbuf
 	ld	(hl),c		; plug dirbuf
 	inc	hl		; ... into dph
@@ -716,7 +1229,7 @@ makdph2:
 ;
 	; HL := alloc size, DE bumped
 	ex	de,hl
-	ld	e,(hl)		; get size to allocate 
+	ld	e,(hl)		; get size to allocate
 	inc	hl		; ...
 	ld	d,(hl)		; ... into HL
 	inc	hl		; and bump DE
@@ -730,7 +1243,7 @@ makdph2:
 	; allocate memory
 	call	alloc		; do the allocation
 	jp	c,instovf	; bail out on overflow
-	
+
 makdph3:
 	; swap hl and bc
 	push	bc		; bc -> (sp)
@@ -741,7 +1254,7 @@ makdph3:
 	ld	(hl),c		; save cks/als buf
 	inc	hl		; ... address in
 	ld	(hl),b		; ... dph and bump
-	inc	hl		; ... to next dph entry	
+	inc	hl		; ... to next dph entry
 	xor	a		; signal success
 	ret
 ;
@@ -751,7 +1264,7 @@ instcpm3:
 	; swicth to sysbnk
 	ld	a,($FFE0)	; get current bank
 	push	af		; save it
-	ld	bc,$F8F2	; HBIOS Get Bank Info
+	ld	bc,BC_SYSGET_BNKINFO ; HBIOS Get Bank Info
 	rst	08		; call HBIOS, E=User Bank
 	ld	a,e		; HBIOS User Bank
 	call	$FFF3		; HBIOS BNKSEL
@@ -763,8 +1276,7 @@ instcpm3:
 	ld	h,(hl)		; ...
 	ld	l,a		; ...
 	ld	(dphadr),hl	; save starting dphadr
-	
-	
+
 	ld	hl,(drvtbl)	; get drive table in HL
 	ld	de,mapwrk	; DE := working drive map
 	ld	b,16
@@ -783,7 +1295,7 @@ instc1:
 	inc	de		; ...
 	jr	instc3		; resume loop without copy
 ;
-instc2:	
+instc2:
 	push	hl		; save drvtbl entry adr
 	push	de		; save mapwrk entry adr
 	ld	de,(dphadr)	; get cur dph adr
@@ -865,15 +1377,15 @@ alloc:
 	ex	de,hl		; de=new heaptop, hl=heaplim
 	sbc	hl,de		; heaplim - heaptop
 	jr	c,allocx	; c set on overflow error
-	; allocation succeeded, commit new heaptop              
+	; allocation succeeded, commit new heaptop
 	ld	(heaptop),de	; save new heaptop
-allocx:                         
+allocx:
 	pop	hl		; return value to hl
 	pop	de		; recover de
 	ret
 ;
 ; Scan drive map table for integrity
-; Currently just checks for multiple drive 
+; Currently just checks for multiple drive
 ;   letters referencing a single file system
 ;
 valid:
@@ -905,6 +1417,14 @@ valid2:		; setup for inner loop
 	call	addhl		; point to entry following
 	pop	de		; de points to comparison entry
 ;
+; Scan for a match in (mapwrk)
+; The following comparison code is called elsewhere, not just from above
+; (please respect the contract)
+; hl : pointer to start of items to scan check in map
+; de is the invarient (fixed) entry in the table to compare against
+; b : is the number of items to check
+; return  Z - Found a duplicate comparison=0
+; return NZ - No Matches found (a=$ff)
 valid3:		; inner loop
 	; bypass unassigned drives (only need to test 1)
 	ld	a,(hl)		; get first drive unit in A
@@ -981,7 +1501,7 @@ drvswap:
 	ld	a,(srcdrv)	; get the source drive
 	call	chkdrv		; valid drive?
 	ret	nz		; abort if not
-	ld	hl,(drives)	; load source/dest in DE
+	ld	hl,(drives)	; load source/dest in HL
 	ld	a,h		; put source drive num in a
 	cp	l		; compare to the dest drive num
 	jp	z,errswp	; Invalid swap request, src == dest
@@ -1001,7 +1521,7 @@ drvswap:
 	rlca
 	call	addhl
 	ld	(dstptr),hl
-;	
+;
 	; 1) dest -> temp
 	ld	hl,(dstptr)
 	ld	de,tmpent
@@ -1064,20 +1584,19 @@ drvmap1:	; loop through device table looking for a match
 	djnz	drvmap1		; and loop
 	jp	errdev
 ;
-drvmap2:	
+drvmap2:
 	; convert index to device type id
 	ld	a,c		; index to accum
 	ld	(device),a	; save as device id
 ;
 	; loop thru hbios units looking for device type/unit match
-	ld	b,$F8		; hbios func: sysget
-	ld	c,$10		; sysget subfunc: diocnt
-	rst	08		; call hbios, E := device count 
+	ld	bc,BC_SYSGET_DIOCNT ; hbios func: sysget subfunc: diocnt
+	rst	08		; call hbios, E := device count
 	ld	b,e		; use device count for loop count
 	ld	c,0		; use C for device index
 drvmap3:
 	push	bc		; preserve loop control
-	ld	b,$17		; hbios func: diodevice
+	ld	b,BF_DIODEVICE	; hbios func: diodevice
 	rst	08		; call hbios, D := device, E := unit
 	pop	bc		; restore loop control
 	ld	a,(device)
@@ -1099,7 +1618,7 @@ drvmap5:
 	call	chkdev		; check validity
 	pop	bc		; restore unit
 	ret	nz		; bail out on error
-	
+
 	; resolve the CBIOS DPH table entry
 	ld	a,(dstdrv)	; dest drv num to A
 	call	chkdrv		; valid drive?
@@ -1206,12 +1725,12 @@ showall:
 	ld	b,16		; 16 drives possible
 	ld	c,0		; map index (drive letter)
 ;
-	ld	a,b		; load count
-	or	$FF		; signal no action
-	ret	z		; bail out if zero
+;	ld	a,b		; load count
+;	or	$FF		; signal no action
+;	ret	z		; bail out if zero
 ;
 showall1:	; loop
-	ld	a,c		;
+;	ld	a,c		;
 	push	bc		; save loop control
 	call	showass
 	pop	bc		; restore loop control
@@ -1226,8 +1745,9 @@ showall1:	; loop
 showass:
 ;
 	; setup HL to point to desired entry in table
-	ld	c,a		; save incoming drive in C
+;	ld	c,a		; save incoming drive in C
 	ld	hl,mapwrk	; HL = address of drive map
+	ld	a,c
 	rlca
 	rlca
 	call	addhl		; HL = address of drive map table entry
@@ -1301,7 +1821,7 @@ prtdev:
 	or	a		; set flags
 	ld	a,e		; put device num back
 	jr	nz,prtdevu	; print device in UNA mode
-	ld	b,$17		; hbios func: diodevice
+	ld	b,BF_DIODEVICE	; hbios func: diodevice
 	ld	c,a		; unit to C
 	rst	08		; call hbios, D := device, E := unit
 	push	de		; save results
@@ -1326,7 +1846,7 @@ prtdevu:
 	push	bc
 	push	de
 	push	hl
-;	
+;
 	; UNA mode version of print device
 	ld	b,a		; B := unit num
 	push	bc		; save for later
@@ -1389,15 +1909,14 @@ chkdrv:
 ;
 chkdev:		; HBIOS variant
 	push	af		; save incoming unit
-	ld	b,$F8		; hbios func: sysget
-	ld	c,$10		; sysget subfunc: diocnt
+	ld	bc,BC_SYSGET_DIOCNT ; hbios func: sysget subfunc: diocnt
 	rst	08		; call hbios, E := device count
 	pop	af		; restore incoming unit
 	cp	e		; compare to unit count
 	jp	nc,errdev	; if too high, error
 ;
 	; get device/unit info
-	ld	b,$17		; hbios func: diodevice
+	ld	b,BF_DIODEVICE	; hbios func: diodevice
 	ld	c,a		; unit to C
 	rst	08		; call hbios, C := device attributes
 ;
@@ -1476,7 +1995,7 @@ prtstr1:
 ;
 prtstr2:
 	pop	de		; restore registers
-	ret	
+	ret
 ;
 ; Print the value in A in hex without destroying any registers
 ;
@@ -1499,7 +2018,7 @@ prthexword:
 	ld	a,b
 	call	prthex
 	ld	a,c
-	call	prthex 
+	call	prthex
 	pop	af
 	ret
 ;
@@ -1523,9 +2042,9 @@ hexascii:
 hexconv:
 	and	$0F	     	; low nibble only
 	add	a,$90
-	daa	
+	daa
 	adc	a,$40
-	daa	
+	daa
 	ret
 ;
 ; Print value of A or HL in decimal with leading zero suppression
@@ -1871,19 +2390,27 @@ drives:
 dstdrv	.db	0		; destination drive
 srcdrv	.db	0		; source drive
 device	.db	0		; source device
+; note (unit and slice) need to be kept ordered since they are used
+; in code forming a temp table entry (comparison purposes). See bootadd:
 unit	.db	0		; source unit
 slice	.db	0		; source slice
 ;
+atrmask	.db	0		; device attributes mask before compare
+atrcomp	.db	0		; device attributes compare to
+slicec	.db	1		; number of slices to assign for each volume
+slicmem	.dw	280		; memory to allocate to next slice assigment
+;
 unamod	.db	0		; $FF indicates UNA UBIOS active
 modcnt	.db	0		; count of drive map modifications
 ;
 srcptr	.dw	0		; source pointer for copy
 dstptr	.dw	0		; destination pointer for copy
 tmpent	.fill	4,0		; space to save a table entry
-tmpstr	.fill	9,0		; temporary string of up to 8 chars, zero term
+tmpstr	.fill	17,0		; temporary string of up to 16 chars, zero term
 ;
 heaptop	.dw	0		; current address of top of heap memory
 heaplim	.dw	0		; heap limit address
+heaprem	.dw	$7FFF		; estimate of heap remaining, (before allocate)
 ;
 dirbuf	.dw	0		; directory buffer location
 ;
@@ -1893,6 +2420,7 @@ scbop	.db	$FF		; set a byte
 scbval	.dw	$FF		; value to set
 ;
 mapwrk	.fill	(4 * 16),$FF	; working copy of drive map
+mapadr	.dw	mapwrk		; working pointer into mapwrk used by /B=
 ;
 devtbl:				; device table
 	.dw	dev00, dev01, dev02, dev03
@@ -1936,17 +2464,19 @@ stack	.equ	$		; stack top
 ; Messages
 ;
 indent	.db	"   ",0
-msgban1	.db	"ASSIGN v1.8 for RomWBW CP/M ",0
+msgban1	.db	"ASSIGN v2.0 for RomWBW CP/M ",0
 msg22	.db	"2.2",0
 msg3	.db	"3",0
-msbban2	.db	", 13-Oct-2023",0
+msbban2	.db	", 21-Dec-2024",0
 msghb	.db	" (HBIOS Mode)",0
 msgub	.db	" (UBIOS Mode)",0
-msgban3	.db	"Copyright 2023, Wayne Warthen, GNU GPL v3",0
+msgban3	.db	"Copyright 2024, 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
 	.db	"      ASSIGN /L        (display all possible devices)",13,10
+	.db	"      ASSIGN /B=OPTS   (perform assignment based on options)",13,10
+	.db	"      ASSIGN C:        (display assignment for C:)",13,10
 	.db	"      ASSIGN C:=D:     (swaps C: and D:)",13,10
 	.db	"      ASSIGN C:=FD0:   (assign C: to floppy unit 0)",13,10
 	.db	"      ASSIGN C:=IDE0:1 (assign C: to IDE unit0, slice 1)",13,10

Source/Apps/copysl/Build.cmd

@@ -1,8 +1,11 @@
 @echo off
 setlocal
 
-:: copysl.com is currently distributed as a binary application, so
-:: it is not built here.
+set TOOLS=../../../Tools
+set PATH=%TOOLS%\tasm32;%PATH%
+set TASMTABS=%TOOLS%\tasm32
+
+tasm -t80 -g3 -fFF copysl.asm copysl.com copysl.lst || exit /b
 
 copy /Y copysl.com ..\..\..\Binary\Apps\ || exit /b
 copy /Y copysl.doc ..\..\..\Binary\Apps\ || exit /b

Source/Apps/copysl/Clean.cmd

@@ -1,5 +1,6 @@
 @echo off
 setlocal
 
-:: copysl.com is currently distributed as a binary application, so
-:: we do not delete the .COM file.
+if exist *.com del *.com
+if exist *.lst del *.lst
+if exist *.bin del *.bin

Source/Apps/copysl/Makefile

@@ -1,7 +1,9 @@
 OBJECTS = copysl.com
-NODELETE = $(OBJECTS)
 DOCS = copysl.doc
 DEST = ../../../Binary/Apps
 DOCDEST = ../../../Binary/Apps
-TOOLS=../../../Tools
-include $(TOOLS)/Makefile.inc
+TOOLS =../../../Tools
+
+USETASM=1
+
+include $(TOOLS)/Makefile.inc

Source/Apps/copysl/bdos.asm

@@ -0,0 +1,16 @@
+;
+bdos	.EQU 5
+;
+; Force BDOS to reset (logout) all drives
+;
+drvrst:
+	ld	c,$0D	; BDOS Reset Disk function
+	call	bdos	; do it
+	;
+	ld	c,$25	; BDOS Reset Multiple Drives
+	ld 	de,$FFFF ; all drives
+	call 	bdos 	; do it
+	;
+	xor 	a 	; signal success
+	ret
+;

Source/Apps/copysl/cio.asm

@@ -0,0 +1,328 @@
+
+BDOS   	    .EQU 5
+
+; bdos commands
+CONIN       .EQU 1
+CONOUT      .EQU 2
+DIRCONIO    .EQU 6
+
+; TODO for more routines see assign.asm
+
+; ===============
+; INPUT
+
+; Console Input
+getchr:
+    PUSH    BC
+    PUSH    DE
+    PUSH    HL
+    LD      C,CONIN
+    CALL    BDOS
+    POP HL
+    POP DE
+    POP BC
+    RET
+
+; direct console io
+; BDOS 6 - FF FE FD - commands
+conread:
+    RET
+constatus:
+    RET
+coninput:
+    RET
+
+; =======================================
+; STANDARD OUTPUT
+
+;
+; Print character in A without destroying any registers
+;
+prtchr:
+    ; PUSH   AF
+    PUSH   HL        ; We must preserve HL, as the BDOS call sets it
+    PUSH   BC
+    PUSH   DE
+    LD     C, CONOUT
+    LD     E, A
+    CALL   BDOS
+    POP    DE
+    POP    BC
+    POP    HL
+    ; POP    AF
+    RET
+;
+prtdot:
+    push    af
+    ld      a, '.'
+    call    prtchr
+    pop     af
+    ret
+;
+; Print a zero terminated string at (HL) without destroying any registers
+;
+prtstr:
+    PUSH   AF
+    PUSH   BC
+    push   de
+prtstr1:
+    ld      a,(hl)
+    or      0
+    jr      z,prtstr2
+    ld      c, CONOUT
+    ld      e,a
+    push    hl
+    call    BDOS
+    pop     hl
+    inc     hl
+    jr      prtstr1
+prtstr2:
+    pop    de
+    pop    bc
+    pop    af
+    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
+;
+; 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 0Fh         ; low nibble only
+    add a,90h
+    daa
+    adc a,40h
+    daa
+    ret
+;
+; Print the decimal value of A, with leading zero suppression
+;
+prtdec:
+    push    hl
+    ld  h,0
+    ld  l,a
+    call    prtdecword     ; print it
+    pop hl
+    ret
+;
+; Print the Decimal value (word) in HL
+;
+prtdecword:
+    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
+;
+; Print a byte buffer in hex pointed to by DE
+; Register A has size of buffer
+;
+prthexbuf:
+    or  a
+    ret z       ; empty buffer
+prthexbuf1:
+    ld  a,' '
+    call    prtchr
+    ld  a,(de)
+    call    prthex
+    inc de
+    djnz    prthexbuf1
+    ret
+;
+; Start a new Line
+;
+prtcrlf2:
+    call prtcrlf
+prtcrlf:
+    	push hl
+    	ld	hl, prtcrlf_msg
+    	call 	prtstr
+    	pop 	hl
+    	ret
+prtcrlf_msg:
+    	.DB 	13,10,0
+
+; =================================
+; following is from dmamon util.asm
+;
+; IMMEDIATE PRINT
+; =================================
+;
+; PRINT A CHARACTER REFERENCED BY POINTER AT TOP OF STACK
+; USAGE:
+;   CALL IPRTCHR
+;   .DB  'X'
+;
+iprtchr:
+    EX      (SP),HL
+    PUSH    AF
+    LD      A,(HL)
+    CALL    prtchr
+    POP     AF
+    INC     HL
+    EX      (SP),HL
+    RET
+
+; Print a string referenced by pointer at top of stack
+; Usage
+;   call iprtstr
+;   .DB     "text", 0
+;
+iprtstr:
+    EX      (SP),HL
+    CALL    prtstr
+    INC     HL
+    EX      (SP),HL
+    RET
+;
+; ===========================================================
+;
+;   Following is for INPUT, used to process command line args
+;
+; ===========================================================
+;
+; Skip whitespace at buffer adr in DE, returns with first
+; non-whitespace character in A.
+;
+skipws:
+    ld      a,(hl)  ; get next char
+    or      a       ; check for eol
+    ret     z       ; done if so
+    cp      ' '     ; blank?
+    ret     nz      ; nope, done
+    inc     hl      ; bump buffer pointer
+    jr      skipws  ; and loop
+
+;
+; Uppercase character in A
+;
+upcase:
+    cp  'a'         ; below 'a'?
+    ret c           ; if so, nothing to do
+    cp  'z'+1       ; above 'z'?
+    ret nc          ; if so, nothing to do
+    and ~020h       ; convert character to lower
+    ret             ; done
+
+;
+; Get numeric chars at HL and convert to number returned in A
+; Carry flag set on overflow
+; C is used as a working register
+;
+getnum:
+    ld      c,0     ; C is working register
+
+getnum1:
+    ld      a,(hl)  ; get the active char
+    cp      '0'     ; compare to ascii '0'
+    jr      c,getnum2 ; abort if below
+    cp      '9' + 1 ; compare to ascii '9'
+    jr      nc,getnum2 ; abort if above
+;
+    ld      a,c     ; get working value to A
+    rlca            ; multiply by 10
+    ret     c       ; overflow, return with carry set
+    rlca            ; ...
+    ret     c       ; overflow, return with carry set
+    add     a,c     ; ...
+    ret     c       ; overflow, return with carry set
+    rlca            ; ...
+    ret     c       ; overflow, return with carry set
+    ld      c,a     ; back to C
+    ld      a,(hl)  ; get new digit
+    sub     '0'     ; make binary
+    add     a,c     ; add in working value
+    ret     c       ; overflow, return with carry set
+    ld      c,a     ; back to C
+;
+    inc hl      ; bump to next char
+    jr  getnum1     ; loop
+;
+getnum2:
+    ld  a,c     ; return result in A
+    or  a       ; with flags set, CF is cleared
+    ret
+;
+; Is character in A numeric? NZ if not
+;
+isnum:
+    cp  '0'     ; compare to ascii '0'
+    jr  c,isnum1    ; abort if below
+    cp  '9' + 1     ; compare to ascii '9'
+    jr  nc,isnum1   ; abort if above
+    cp  a       ; set Z
+    ret
+isnum1:
+    or  0FFh     ; set NZ
+    ret         ; and done
+
+

Source/Apps/copysl/copysl.doc

@@ -1,6 +1,6 @@
 ==========================================================================
-              CopySlice Utility v0.2 for RomWbW computers
-                   written by Mark Pruden (Sept 2024)
+              CopySlice Utility v0.3 for RomWbW computers
+                   written by Mark Pruden (March 2025)
 ==========================================================================
 
 Purpose:
@@ -12,37 +12,37 @@ from one disk slice to another slice
 Background
 ----------
 
-This tool is only supported by RomWBW HBIOS, it uses HDIOS for all its 
-disk IO. UNA UBIOS is not supported by this tool. 
+This tool is only supported by RomWBW HBIOS, it uses HDIOS for all its
+disk IO. UNA UBIOS is not supported by this tool.
 
 This tool is running on CP/M 2.2 or 3.0 and has access to full 64kb of
 RAM, with a minimum of 48kb TPA
 
-This tool only works with hard disk devices, other media types like 
-floppy, are not supported at this time. This tool works across different 
+This tool only works with hard disk devices, other media types like
+floppy, are not supported at this time. This tool works across different
 hard disk device types, even of different physical type
 
-Both hd1k and hd512 are fully supported, however copying from one layout 
+Both hd1k and hd512 are fully supported, however copying from one layout
 type to the other is not supported.
 
-During operation data is copied in a single read/write pass, data is not 
+During operation data is copied in a single read/write pass, data is not
 verified by default. If there is a write error, it will be reported, and
 operation will stop.
 
 General Usage
 -------------
-This tool operates at the disk level via RomWBW, thus all disk identifiers 
+This tool operates at the disk level via RomWBW, thus all disk identifiers
 are in the RomWBW <disk>.<unit> format
 
 The syntax (similar to copy) for the command is:
 
   COPYSL <destunit>[.<slice>]=<srcunit>[.<slice>] [/options]
-  
+
 E.g.
-  
+
   COPYSL 3.3=2.10 /U
 
-Means copy from slice 10 on disk 2, onto disk 3 slice 3. This is in 
+Means copy from slice 10 on disk 2, onto disk 3 slice 3. This is in
 unattended mode, so you will not be asked to confirm the copy operation.
 
 Options
@@ -54,39 +54,40 @@ V - Verify. Does an additional read and verify after write.
 Description
 -----------
 
-When run COPYSL will perform command line argument validation and display 
+When run COPYSL will perform command line argument validation and display
 an error if they are illegal. Also any disk IO errors will cause COPYSL
 to exit.
 
-When specifying slice number(s) a check is made that the slice number is 
-valid, i.e. not too large that it would extend past the end of the 
+When specifying slice number(s) a check is made that the slice number is
+valid, i.e. not too large that it would extend past the end of the
 partition (hd1k), or the end of the media (hd512). For hd512 a check is
-also performed to ensure that the slice would not extend into the first 
+also performed to ensure that the slice would not extend into the first
 defined partition.
 
 The copy operation will be faster if the source disk has been formatted
-with the CP/M file system, since during copy the CP/M directory is scanned, 
-and unused blocks are not copied. 
+with the CP/M file system, since during copy the CP/M directory is scanned,
+and unused blocks are not copied.
 
-If a filesystem is not found, (or the /F option is chosen) all data is 
+If a filesystem is not found, (or the /F option is chosen) all data is
 copied.
 
 Verification (if option chosen) will do an aditional read (after write)
 and compare the data read matches what was written. This compare is only
-on every 32'nd byte. This is done for efficiency. 
+on every 32'nd byte. This is done for efficiency.
 
 During copy dots "." will be displayed to indicate progress of the copy.
 Each "." represents 16 kBytes of data. Each line of "." 's is 1 mBytes.
 
 Testing
 -------
-This tool has been writen and tested on a SC126 computer. Testing been on both 
+This tool has been writen and tested on a SC126 computer. Testing been on both
 SD and CF media types, and with both hd1k and hd512 formats
 
 History
 -------
 * v 0.1 Initial Release
 * v 0.2 Added the /v command option to read and verify after write
+* v 0.3 Refresh CP/M disk buffers after completion
 
 Future
 ------
@@ -95,4 +96,3 @@ Future
   This would be at the cost of performance
 * ability to abort once the copy has started <ctrl><c>
 
-

Source/Apps/copysl/crc.asm

@@ -0,0 +1,110 @@
+
+;
+; Simple Block Compare for Comparison purposes
+; Both HL and DL contain Block pointers to compare
+; HL MUST start on an even block e.g. 8000h
+; RET NZ - Failure, Z if no issue
+;
+_cmp20block
+    ; inc de        ; uncommnet to test crc fail!
+    ld      bc, 20h  ; 10t Size of Pointer Increment
+_cmp20block1:
+    ld      a, (de) ; 7t Do The comparison itself
+    cp      (hl)    ; 7t
+    JR      NZ, _cmp20block2 ; 7t / 12t = 21t
+
+    add     hl, bc  ; 11t Add the Increment to both pointers
+    ex      de, hl  ; 4t
+    add     hl, bc  ; 11t
+    ex      de, hl  ; 4t = 30t
+
+    ld      a, h    ; 4t High order byte on Even Boundary
+    bit     4, a    ; 8t has bit 4 been set then exceeded 1000h (4k boundary)
+    JR      Z, _cmp20block1 ; 12t / 7t = 24t
+    xor     a       ; 4t
+    RET             ; 10t Return Success
+_cmp20block2:
+    scf             ; signal CARRY FLAG Also
+    RET             ; This is the error
+
+; clock cycles for above
+; add 40h -> 64 (loop) * 73t =>>  4,672 - 1.56%
+; add 20h ->128 (loop) * 73t =>>  9,344 - 3.13% <= WENT WITH THIS
+; add 10h ->256 (loop) * 73t =>> 18,688 - 6.25%
+; accuracy = 88/4096 => 2.1%
+
+; =====================================================================
+; From : https://tomdalby.com/other/crc.html
+; And  : https://map.grauw.nl/sources/external/z80bits.html#6.1
+; =====================================================================
+;
+; =====================================================================
+; input - hl=start of memory to check, de=length of memory to check
+; returns - a=result crc
+; 20b
+; =====================================================================
+
+; THE COMMNETED LINES NEED TO BE UNCOMMENTED
+
+_crc8b:
+    xor a           ; 4t - initial value so first byte can be XORed in (CCITT)
+;    ld      c, 07h  ; 7t - c=polyonimal used in loop (small speed up)
+_byteloop8b:
+    xor     (hl)    ; 7t - xor in next byte, for first pass a=(hl)
+    inc     hl      ; 6t - next mem
+;    ld      b, 8    ; 7t - loop over 8 bits
+_rotate8b:
+;    add     a,a     ; 4t - shift crc left one
+;    jr      nc, _nextbit8b ; 12/7t - only xor polyonimal if msb set (carry=1)
+;    xor     c       ; 4t - CRC8_CCITT = 0x07
+_nextbit8b:
+;    djnz    _rotate8b ; 13/8t
+    ld      b,a     ; 4t - preserve a in b
+    dec     de      ; 6t - counter-1
+    ld      a,d     ; 4t - check if de=0
+    or      e       ; 4t
+    ld      a,b     ; 4t - restore a
+    jr      nz, _byteloop8b ; 12/7t
+    ret             ; 10t
+
+; Clock Cycle For above with 4k bypes
+; Loop = 4096 * 47 cycles + 11 => 192,523 x 2 (src/dest) => 385,046
+; acuracy = 1 / 256 => 0.4 %
+
+; =====================================================================
+; CRC-CCITT
+;
+; CCITT polynomial 1021h
+; Initial Value    FFFFh
+;
+; input - de=start of memory to check, bc=length of memory to check
+; returns - hl=result crc
+; =====================================================================
+
+_crc16:
+    ld      hl, 0ffffh ; 10t - initial crc = $ffff
+_byte16:
+;    push    bc ; 11t - preserve counter
+    ld      a,(de) ; 7t - get byte
+    inc     de ; 6t - next mem
+;    xor     h ; 4t - xor byte into crc high byte
+;    ld      h,a ; 4t - back into high byte
+;    ld      b,8 ; 7t - rotate 8 bits
+_rotate16:
+;    add     hl,hl ; 11t - rotate crc left one
+;    jr      nc,_nextbit16 ; 12/7t - only xor polyonimal if msb set
+;    ld      a,h ; 4t
+;    xor     10h ; 7t - high byte with $10
+;    ld      h,a ; 4t
+;    ld      a,l ; 4t
+;    xor     21h ; 7t - low byte with $21
+;    ld      l,a ; 4t - hl now xor $1021
+_nextbit16:
+;    djnz    _rotate16 ; 13/8t - loop over 8 bits
+;    pop     bc ; 10t - bring back main counter
+    dec     bc ; 6t
+    ld      a,b ; 4t
+    or      c ; 4t
+    jr      nz,_byte16 ; 12/7t
+    ret     ; 10t
+;

Source/Apps/copysl/hbios.asm

@@ -0,0 +1,178 @@
+;
+; HBIOS FUNCTIONS
+;
+;
+BF_DIO          .EQU    010H
+BF_DIOSTATUS    .EQU    BF_DIO + 0  ; DISK STATUS
+BF_DIORESET     .EQU    BF_DIO + 1  ; DISK RESET
+BF_DIOSEEK      .EQU    BF_DIO + 2  ; DISK SEEK
+BF_DIOREAD      .EQU    BF_DIO + 3  ; DISK READ SECTORS
+BF_DIOWRITE     .EQU    BF_DIO + 4  ; DISK WRITE SECTORS
+BF_DIOVERIFY    .EQU    BF_DIO + 5  ; DISK VERIFY SECTORS
+BF_DIOFORMAT    .EQU    BF_DIO + 6  ; DISK FORMAT TRACK
+BF_DIODEVICE    .EQU    BF_DIO + 7  ; DISK DEVICE INFO REPORT
+BF_DIOMEDIA     .EQU    BF_DIO + 8  ; DISK MEDIA REPORT
+BF_DIODEFMED    .EQU    BF_DIO + 9  ; DEFINE DISK MEDIA
+BF_DIOCAP       .EQU    BF_DIO + 10 ; DISK CAPACITY REPORT
+BF_DIOGEOM      .EQU    BF_DIO + 11 ; DISK GEOMETRY REPORT
+;
+BF_SYS          .EQU    0F0H
+BF_SYSRESET     .EQU    BF_SYS + 0  ; SOFT RESET HBIOS
+BF_SYSVER       .EQU    BF_SYS + 1  ; GET HBIOS VERSION
+BF_SYSSETBNK    .EQU    BF_SYS + 2  ; SET CURRENT BANK
+BF_SYSGETBNK    .EQU    BF_SYS + 3  ; GET CURRENT BANK
+BF_SYSSETCPY    .EQU    BF_SYS + 4  ; BANK MEMORY COPY SETUP
+BF_SYSBNKCPY    .EQU    BF_SYS + 5  ; BANK MEMORY COPY
+BF_SYSALLOC     .EQU    BF_SYS + 6  ; ALLOC HBIOS HEAP MEMORY
+BF_SYSFREE      .EQU    BF_SYS + 7  ; FREE HBIOS HEAP MEMORY
+BF_SYSGET       .EQU    BF_SYS + 8  ; GET HBIOS INFO
+BF_SYSSET       .EQU    BF_SYS + 9  ; SET HBIOS PARAMETERS
+BF_SYSPEEK      .EQU    BF_SYS + 10 ; GET A BYTE VALUE FROM ALT BANK
+BF_SYSPOKE      .EQU    BF_SYS + 11 ; SET A BYTE VALUE IN ALT BANK
+BF_SYSINT       .EQU    BF_SYS + 12 ; MANAGE INTERRUPT VECTORS
+;
+BF_SYSGET_CIOCNT    .EQU    00h ; GET CHAR UNIT COUNT
+BF_SYSGET_CIOFN     .EQU    01h ; GET CIO UNIT FN/DATA ADR
+BF_SYSGET_DIOCNT    .EQU    10h ; GET DISK UNIT COUNT
+BF_SYSGET_DIOFN     .EQU    11h ; GET DIO UNIT FN/DATA ADR
+BF_SYSGET_RTCCNT    .EQU    20h ; GET RTC UNIT COUNT
+BF_SYSGET_DSKYCNT   .EQU    30h ; GET DSKY UNIT COUNT
+BF_SYSGET_VDACNT    .EQU    40h ; GET VDA UNIT COUNT
+BF_SYSGET_VDAFN     .EQU    41h ; GET VDA UNIT FN/DATA ADR
+BF_SYSGET_SNDCNT    .EQU    50h ; GET VDA UNIT COUNT
+BF_SYSGET_SNDFN     .EQU    51h ; GET SND UNIT FN/DATA ADR
+BF_SYSGET_TIMER     .EQU    0D0h ; GET CURRENT TIMER VALUE
+BF_SYSGET_SECS      .EQU    0D1h ; GET CURRENT SECONDS VALUE
+BF_SYSGET_BOOTINFO  .EQU    0E0h ; GET BOOT INFORMATION
+BF_SYSGET_CPUINFO   .EQU    0F0h ; GET CPU INFORMATION
+BF_SYSGET_MEMINFO   .EQU    0F1h ; GET MEMORY CAPACTITY INFO
+BF_SYSGET_BNKINFO   .EQU    0F2h ; GET BANK ASSIGNMENT INFO
+BF_SYSGET_CPUSPD    .EQU    0F3h ; GET CLOCK SPEED & WAIT STATES
+BF_SYSGET_PANEL     .EQU    0F4h ; GET FRONT PANEL SWITCHES VAL
+BF_SYSGET_APPBNKS   .EQU    0F5h ; GET APP BANK INFORMATION
+;
+; MEDIA ID VALUES
+;
+MID_NONE    .EQU    0
+MID_MDROM   .EQU    1
+MID_MDRAM   .EQU    2
+MID_RF      .EQU    3
+MID_HD      .EQU    4
+MID_FD720   .EQU    5
+MID_FD144   .EQU    6
+MID_FD360   .EQU    7
+MID_FD120   .EQU    8
+MID_FD111   .EQU    9
+MID_HDNEW   .EQU    10
+
+; -----------------
+;
+; Read timer in sconds.
+;
+sysgetseconds:
+    ld  b,BF_SYSGET
+    ld  c,BF_SYSGET_SECS
+    rst 08          ; do it
+    ret
+
+; -----------------
+;
+; Return non zero if A (media ID)
+; is a type of hard drive
+; If not A=0 and Z flag is set
+;
+isaharddrive:
+    cp  MID_HD
+    jr  z, ishdd1
+    cp  MID_HDNEW
+    jr  z, ishdd1
+    xor a ; clear A and set Z flag
+    ret
+ishdd1:
+    or a ; set Z flag and return
+    ret
+
+; -------------------------------------
+;
+; used to pass the buffer address argument
+;
+bankid      .DB 0       ; bank id used for read writes
+dma         .DW 8000h   ; address argument for read write
+;
+;
+; basic setup for disk io
+; call to get the current bank IO
+;
+initdiskio:
+    ; Get current RAM bank
+    ld      b,BF_SYSGETBNK  ; HBIOS GetBank function
+    RST     08          ; do it via RST vector, C=bank id
+    JP      NZ, err_hbios
+    ld      a,c         ; put bank id in A
+    ld      (bankid),a  ; put bank id in Argument
+    RET
+;
+;
+; Read disk sector(s)
+; DE:HL is LBA, B is sector count, C is disk unit
+; (dma) is the buffer address
+; (bankid) is the memory bank
+; Returns E sectors read, and A status
+;
+diskread:
+    ; Seek to requested sector in DE:HL
+    push    bc          ; save unit & count
+    set 7,d         ; set LBA access flag
+    ld  b,BF_DIOSEEK        ; HBIOS func: seek
+    rst 08          ; do it
+    pop bc          ; recover unit & count
+    jp  nz,err_diskio       ; handle error
+
+    ; Read sector(s) into buffer
+    ld  e,b         ; transfer count
+    ld  b,BF_DIOREAD        ; HBIOS func: disk read
+    ld  hl,(dma)        ; read into info sec buffer
+    ld  a,(bankid)      ; user bank
+    ld  d,a
+    rst 08          ; do it
+    jp  nz,err_diskio       ; handle error
+    xor a           ; signal success
+    ret             ; and done
+;
+; Write disk sector(s)
+; DE:HL is LBA, B is sector count, C is disk unit
+; (dma) is the buffer address
+; (bankid) is the memory bank
+; Returns E sectors written, and A status
+;
+diskwrite:
+    ; Seek to requested sector in DE:HL
+    push bc             ; save unit & count
+    set 7,d             ; set LBA access flag
+    ld  b,BF_DIOSEEK    ; HBIOS func: seek
+    rst 08              ; do it
+    pop bc              ; recover unit & count
+    jp  nz,err_diskio   ; handle error
+
+    ; Write sector(s) from buffer
+    ld  e,b             ; transfer count
+    ld  b,BF_DIOWRITE   ; HBIOS func: disk write
+    ld  hl,(dma)        ; write from sec buffer
+    ld  a,(bankid)      ; user bank
+    ld  d,a
+    rst 08              ; do it
+    jp  nz,err_diskio   ; handle error
+    xor a               ; signal success
+    ret                 ; and done
+;
+err_diskio:
+;    push    hl
+;    ld      hl,str_err_prefix
+;    call    prtstr
+;    pop     hl
+;    or      0ffh        ; signal error
+    ret     ; done
+
+;str_err_prefix  db 13,10,13,10,"*** ",0
+
+

Source/Apps/slabel/Build.cmd

@@ -0,0 +1,10 @@
+@echo off
+setlocal
+
+set TOOLS=../../../Tools
+set PATH=%TOOLS%\tasm32;%PATH%
+set TASMTABS=%TOOLS%\tasm32
+
+tasm -t80 -g3 -fFF slabel.asm slabel.com slabel.lst || exit /b
+
+copy /Y slabel.com ..\..\..\Binary\Apps\ || exit /b

Source/Apps/slabel/Clean.cmd

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

Source/Apps/slabel/Makefile

@@ -0,0 +1,7 @@
+OBJECTS = slabel.com
+DEST = ../../../Binary/Apps
+TOOLS =../../../Tools
+
+USETASM=1
+
+include $(TOOLS)/Makefile.inc

Source/Apps/slabel/slabel.asm

@@ -0,0 +1,763 @@
+;==============================================================================
+; SLICE LABEL - Update Disk Labels
+; Version  December-2024
+;==============================================================================
+;
+; Author: Mark Pruden
+;______________________________________________________________________________
+;
+; Usage:
+;   SLABEL [unit.slice,label] [/?]
+;     ex: SLABEL			Display current list of Labels
+;     	  SLABEL unit.slice=label	Assign a disk Label to the Slice on Unit
+;         SLABEL /?			Display version and usage
+;
+; Operation:
+;   Print and Assign a Disk Label to a Hard Disk Slice.
+;
+; Technical:
+;   On the third sector of "bootable" Disk Slice there is metadata used by RomWBW to know how
+;   to boot the OS found on the slice. This includes a Label for the volume, which is printed
+;   out by RomWBW during the boot process.
+;   Note this label is not associated to any label the OS may assign to the volume.
+;   See loader.asm in each of the O/S directories e.g. /src/CPM22 which describe these sectors
+;
+;   This ony works on slices which have existing media information in the third sector.
+;   There is no capabiity to write this information on demand.
+;
+; known Issues:
+;   - Listing the slabel for all slices can be time consuming, because of the use of the EXT_MEDIA
+;     function call. This function reads the partition table (on each call) to assert (if valid)
+;     the LBA location of the requested slice. Ideally we would only need to read the partition
+;     table once (per device), and work out all the LBA's from this single read.
+;     Note this doesnt omit the fact that the 3 rd sector of each slice wold need to be read regarless.
+;     To slightly reduce some IO only slices < 64 are considered.
+;
+; This code will only execute on a Z80 CPU (or derivitive)
+; This code requirs the use of HBIOS
+;
+;______________________________________________________________________________
+;
+; Change Log:
+;   2024-12-11 [MAP] Started - Reboot v1.0 used as the basis for this code
+;   2024-12-14 [MAP] Initial 0.9 alpha with basic working functionality
+;   2025-04-21 [MAP] Initial v1.0 release for distribution, fixing all issues
+;______________________________________________________________________________
+;
+; Include Files
+;
+#include "../../ver.inc"		; to ensure it is the correct ver
+#include "../../HBIOS/hbios.inc"
+;
+;===============================================================================
+;
+; General operational equates (should not requre adjustment)
+;
+stksiz		.equ	$40		; Working stack size
+;
+restart		.equ	$0000		; CP/M restart vector
+bdos		.equ	$0005		; BDOS invocation vector
+cmdbuf		.equ	$0081		; CPM command buffer
+;
+bf_sysreset	.equ	$F0		; restart system
+bf_sysres_int	.equ	$00		; reset hbios internal
+bf_sysres_warm	.equ	$01		; warm start (restart boot loader)
+;
+ident		.equ	$FFFE		; loc of RomWBW HBIOS ident ptr
+;
+sigbyte1	.equ	$A5		; 1st sig byte boot info sector (bb_sig)
+sigbyte2	.equ	$5A		; 2nd sig byte boot info sector (bb_sig)
+;
+labelterm	.equ	'$'		; terminating charater for disk label
+;
+;===============================================================================
+;
+	.org	$0100			; standard CP/M TPA executable
+;
+	ld	(stksav),sp		; save stack
+	ld	sp,stack		; set new stack
+;
+	ld	de,str_banner
+	call	prtstr			; print the banner
+;
+	call	init			; initialize
+	jr	nz,exit			; abort if init fails
+;
+	call	main			; do the real work
+;
+exit:
+	call	crlf			; print terminating crlf
+	ld	sp,(stksav)		; restore stack to prior state
+	jp	restart			; return to CP/M via restart
+;
+;===============================================================================
+; Initialization
+;
+init:
+	; check for UNA (UBIOS)
+	ld	a,($FFFD)	; fixed location of UNA API vector
+	cp	$C3		; jp instruction?
+	jr	nz,initwbw	; if not, not UNA
+	ld	hl,($FFFE)	; get jp address
+	ld	a,(hl)		; get byte at target address
+	cp	$FD		; first byte of UNA push ix instruction
+	jr	nz,initwbw	; 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,initwbw	; if not, not UNA
+	jp	err_una		; UNA not supported
+;
+initwbw:
+	; 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,err_inv	; abort with invalid config block
+	inc	hl		; next byte (marker byte 2)
+	ld	a,(hl)		; load it
+	cp	~'W'		; match?
+	jp	nz,err_inv	; abort with invalid config block
+	inc	hl		; next byte (major/minor version)
+	ld	a,(hl)		; load it
+	cp	rmj << 4 | rmn	; match?
+	jp	nz,err_ver	; abort with invalid os version
+;
+initz:
+	; initialization complete
+	xor	a		; signal success
+	ret			; return
+;
+;===============================================================================
+; Main Execution
+;
+main:
+	call	initdiskio		; initi DiskIO routines (bank ID)
+;
+	ld	de,cmdbuf		; start of command input buffer
+	call	skipws			; skip whitespace on cmd line
+;
+	ld	a,(de)			; get first non-ws char
+	or	a			; test for terminator, no parms
+	jr	z,prtslc		; if so, print details, and return
+;
+	call	isnum			; do we have a number?
+	jp	z,setlabel		; if so, then we are setting Label.
+;
+	jp	usage			; otherwise print usage and return
+	ret				; and exit
+;
+;===============================================================================
+; Print Usage /? Information
+;
+usage:
+	ld	de,str_usage	; display the cmd options for this utility
+	call	prtstr
+	;
+	ret			; exit back out to CP/M CCP
+;
+;===============================================================================
+; Print list of all slices
+;
+prtslc:
+	ld	de,PRTSLC_HDR		; Header for list of Slices
+	call	prtstr			; Print It
+	;
+	ld	bc,BC_SYSGET_DIOCNT	; FUNC: SYSTEM INFO GET DISK DRIVES
+	rst	08			; E := UNIT COUNT
+	;
+	ld	b,e			; MOVE Disk CNT TO B FOR LOOP COUNT
+	ld	c,0			; C WILL BE UNIT INDEX
+prtslc1:
+	ld	a,b			; loop counter
+	or	a			; set flags
+	ret	z			; IF no more drives, finished
+	;
+	ld	a,c			; unit index
+	ld	(currunit),a		; store the unit number
+	;
+	push	bc			; save loop vars
+	call	prtslc2			; for each disk Unit, print its details
+	pop	bc			; restore loop variables
+	;
+	inc	c			; bump the unit number
+	djnz	prtslc1			; main disk loop
+	;
+	ret				; loop has finished
+;
+;-------------------------------------------------------------------------------
+; Print list of All Slices for a given Unit
+;
+prtslc2:
+	; get the media infor
+	ld	b,BF_DIOMEDIA		; get media information
+	ld	e,1			; with media discovery
+	rst	08			; do media discovery
+	ret	nz			; an error
+	;
+	ld	a,MID_HD		; hard disk
+	cp	e			; is it  hard disk
+	ret	nz			; if not noting to do
+	;
+	; setup the loop
+	ld	b,64			; arbitrary (?) number of slices to check.
+					; NOTE: could be higher, but each slice check has disk IO
+	ld	c,0			; starting at slice 0
+;
+prtslc2a:
+	ld	a,c			; slice number
+	ld	(currslice),a		; save slice number
+	;
+	push	bc			; save loop
+	call	prtslc3			; print detals of the slice
+	pop	bc			; restore loop
+	ret	nz			; if error dont continie
+	;
+	inc	c			; next slice number
+	djnz	prtslc2a		; loop if more slices
+	;
+	ret				; return from Slice Loop
+;
+;-------------------------------------------------------------------------------
+; Print details of a Slice for a given Unit/Slice
+;
+prtslc3:
+	; get the details of the device / slice
+	ld	a,(currunit)
+	ld	d,a			; unit
+	ld	a,(currslice)
+	ld	e,a			; slice
+	ld	b,BF_EXTSLICE		; EXT function to check compute slice offset
+	rst	08			; noting this call checks partition table.
+	ret	NZ			; an error, for lots of reasons, e.g. Slice not valid
+	;
+	call	thirdsector		; point to the third sector of partition
+	;
+	call	diskread		; do the sector read
+	ret	nz			; read error. exit the slice loop
+	;
+	; Check signature
+	ld	bc,(bb_sig)		; get signature read
+	ld	a,sigbyte1		; expected value of first byte
+	cp	b			; compare
+	jr	nz,prtslc5		; ignore missing signature and loop
+	ld	a,sigbyte2		; expected value of second byte
+	cp	c			; compare
+	jr	nz,prtslc5		; ignore missing signature and loop
+	;
+        ; Print volume label string at HL, '$' terminated, 16 chars max
+	ld	a,(currunit)
+	call	prtdecb			; print unit number as decimal
+	call 	pdot			; print a DOT
+	ld	a,(currslice)
+	call	prtdecb
+	ld	a,' '
+	call	cout			; print a space
+	call	cout			; print a space
+	ld	hl,bb_label		; point to label
+	call	pvol			; print it
+	call	crlf
+	;
+prtslc5:
+	xor	a
+	ret
+;
+;-------------------------------------------------------------------------------
+; Print volume label string at HL, '$' terminated, 16 chars max
+;
+pvol:
+	ld	b,16			; init max char downcounter
+pvol1:
+	ld	a,(hl)			; get next character
+	cp	labelterm		; set flags based on terminator $
+	inc	hl			; bump pointer regardless
+	ret	z			; done if null
+	call	cout			; display character
+	djnz	pvol1			; loop till done
+	ret				; hit max of 16 chars
+;
+;===============================================================================
+; Set Label Information onto disk
+;
+setlabel:
+	call	getnum			; parse a number
+	jp	c,err_parm		; handle overflow error
+	ld	(currunit),a		; save boot unit
+	xor	a			; zero accum
+	ld	(currslice),a		; save default slice
+	call	skipws			; skip possible whitespace
+	ld	a,(de)			; get separator char
+	or	a			; test for terminator
+	jp	z,err_parm		; if so, incomplete
+	cp	'='			; otherwise, is ','?
+	jr	z,setlabel4		; if so, skip the Slice parm
+	cp	'.'			; otherwise, is '.'?
+	jp	NZ,err_parm		; if not, format error
+;
+	inc	de			; bump past separator
+	call	skipws			; skip possible whitespace
+	call	isnum			; do we have a number?
+	jp	nz,err_parm		; if not, format error
+	call	getnum			; get number
+	jp	c,err_parm		; handle overflow error
+	ld	(currslice),a		; save boot slice
+setlabel3:
+	call	skipws			; skip possible whitespace
+	ld	a,(de)			; get separator char
+	or	a			; test for terminator
+	jp	z,err_parm		; if so, then an error
+	cp	'='			; otherwise, is ','?
+	jp	nz,err_parm		; if not, format error
+setlabel4:
+	inc	de			; bump past separator
+	call	skipws			; skip possible whitespace
+	ld	(newlabel),de		; address of disk label after '='
+	;
+	ld	a,(currunit)		; passing boot unit
+	ld	d,a
+	ld	a,(currslice)		; and slice
+	ld	e,a
+	ld	b,BF_EXTSLICE		; HBIOS func: SLICE CALC - extended
+	rst	08			; info for the Device, and Slice
+;
+	; Check errors from the Function
+	cp	ERR_NOUNIT		; compare to no unit error
+	jp	z,err_nodisk		; handle no disk err
+	cp	ERR_NOMEDIA		; no media in the device
+	jp	z,err_nomedia		; handle the error
+	cp	ERR_RANGE		; slice is invalid
+	jp	z,err_badslice		; bad slice, handle err
+	or	a			; any other error
+	jp	nz,err_diskio		; handle as general IO error
+	;
+	call	thirdsector		; point to the third sector of partition
+	;
+	call	diskread		; read the sector
+	jp	nz,err_diskio		; abort on error
+	;
+	; Check signature
+	ld	de,(bb_sig)		; get signature read
+	ld	a,sigbyte1		; expected value of first byte
+	cp	d			; compare
+	jp	nz,err_sig		; handle error
+	ld	a,sigbyte2		; expected value of second byte
+	cp	e			; compare
+	jp	nz,err_sig		; handle error
+	;
+	ld	b,16			; loop down counter (max size of label)
+	ld	de,(newlabel)		; reading from cmd line
+	ld	hl,bb_label		; writing to disk label in sector buffer
+updatelabel:
+	ld	a,(de)			; read input
+	or	a			; look for string terminator
+	jr	z,updatelabel2		; if terminator then complete
+	ld 	(hl),a			; store char in sector buff
+	inc	de			; update pointers
+	inc	hl
+	djnz	updatelabel		; loop for next character
+updatelabel2:
+	ld	a,labelterm
+	ld	(hl),a			; store the final terminator $ char
+writelabel:
+	; write the sector
+	ld	hl,(lba)		; lba, low word, same as read sector
+	ld	de,(lba+2)		; lba, high word
+	call	diskwrite		; write the sector back to disk
+	jp	nz,err_diskio		; abort on error
+	;
+	; print the outcome.
+	ld	de,PRTSLC_HDR		; Header for list of Slices
+	call	prtstr			; Print header
+	call	prtslc3			; print updated label for unit/slice
+	;
+	ret
+;
+;-------------------------------------------------------------------------------
+; advance the DE HL LBA sector by 2, ie third sector
+;
+thirdsector:
+	ld	bc,2			; sector offset
+	add	hl,bc			; add to LBA value low word
+	jr	nc,sectornum		; check for carry
+	inc	de			; if so, bump high word
+sectornum:
+	ld	(lba),hl		; update lba, low word
+	ld	(lba+2),de		; update lba, high word
+	ret
+;
+;===============================================================================
+; Error Handlers
+;
+err_una:
+	ld	de,str_err_una
+	jr	err_ret
+err_inv:
+	ld	de,str_err_inv
+	jr	err_ret
+err_ver:
+	ld	de,str_err_ver
+	jr	err_ret
+err_parm:
+	ld	de,str_err_parm
+	jr	err_ret
+err_nodisk:
+	ld	de,str_err_nodisk
+	jr	err_ret
+err_nomedia:
+	ld	de,str_err_nomedia
+	jr	err_ret
+err_badslice:
+	ld	de,str_err_badslc
+	jr	err_ret
+err_sig:
+	ld	de,str_err_sig
+	jr	err_ret
+err_diskio:
+	ld	de,str_err_diskio
+	jr	err_ret
+err_ret:
+	call	crlf2
+	call	prtstr
+	or	$FF			; signal error
+	ret
+;
+;===============================================================================
+; Utility Routines
+;-------------------------------------------------------------------------------
+; Print a dot on console
+;
+pdot:
+	push	af
+	ld	a,'.'
+	call	cout
+	pop	af
+	ret
+;
+;-------------------------------------------------------------------------------
+; Print character in A without destroying any registers
+;
+prtchr:
+cout:
+	push	af		; save registers
+	push	bc
+	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
+	pop	af
+	ret
+;
+;-------------------------------------------------------------------------------
+; Start a newline on console (cr/lf)
+;
+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
+;
+;-------------------------------------------------------------------------------
+; Print a zero terminated string at (de) without destroying any registers
+;
+prtstr:
+	push	af
+	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
+	pop	af
+	ret
+;
+;-------------------------------------------------------------------------------
+; Print value of a in decimal with leading zero suppression
+;
+prtdecb:
+	push	hl
+	push	af
+	ld	l,a
+	ld	h,0
+	call	prtdec
+	pop	af
+	pop	hl
+	ret
+;
+;-------------------------------------------------------------------------------
+; Print value of HL in decimal with leading zero suppression
+;
+prtdec:
+	push	bc
+	push	de
+	push	hl
+	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
+	call	prtdec1
+	pop	hl
+	pop	de
+	pop	bc
+	ret
+prtdec1:
+	ld	a,'0' - 1
+prtdec2:
+	inc	a
+	add	hl,bc
+	jr	c,prtdec2
+	sbc	hl,bc
+	cp	e
+	jr	z,prtdec3
+	ld	e,0
+	call	cout
+prtdec3:
+	ret
+;
+;-------------------------------------------------------------------------------
+; INPUT ROUTINES
+;-------------------------------------------------------------------------------
+; Skip whitespace at buffer adr in DE, returns with first
+; non-whitespace character in A.
+;
+skipws:
+	ld	a,(de)			; get next char
+	or	a			; check for eol
+	ret	z			; done if so
+	cp	' '			; blank?
+	ret	nz			; nope, done
+	inc	de			; bump buffer pointer
+	jr	skipws			; and loop
+;
+;-------------------------------------------------------------------------------
+; Convert character in A to uppercase
+;
+upcase:
+	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
+;
+;-------------------------------------------------------------------------------
+; Get numeric chars at DE and convert to number returned in A
+; Carry flag set on overflow
+;
+getnum:
+	ld	c,0		; C is working register
+getnum1:
+	ld	a,(de)		; get the active char
+	cp	'0'		; compare to ascii '0'
+	jr	c,getnum2	; abort if below
+	cp	'9' + 1		; compare to ascii '9'
+	jr	nc,getnum2	; abort if above
+;
+	; valid digit, add new digit to C
+	ld	a,c		; get working value to A
+	rlca			; multiply by 10
+	ret	c		; overflow, return with carry set
+	rlca			; ...
+	ret	c		; overflow, return with carry set
+	add	a,c		; ...
+	ret	c		; overflow, return with carry set
+	rlca			; ...
+	ret	c		; overflow, return with carry set
+	ld	c,a		; back to C
+	ld	a,(de)		; get new digit
+	sub	'0'		; make binary
+	add	a,c		; add in working value
+	ret	c		; overflow, return with carry set
+	ld	c,a		; back to C
+;
+	inc	de		; bump to next char
+	jr	getnum1		; loop
+;
+getnum2:	; return result
+	ld	a,c		; return result in A
+	or	a		; with flags set, CF is cleared
+	ret
+;
+;-------------------------------------------------------------------------------
+; Is character in A numeric? NZ if not
+;
+isnum:
+	cp	'0'		; compare to ascii '0'
+	jr	c,isnum1	; abort if below
+	cp	'9' + 1		; compare to ascii '9'
+	jr	nc,isnum1	; abort if above
+	cp	a		; set Z
+	ret
+isnum1:
+	or	$FF		; set NZ
+	ret			; and done
+;
+;-------------------------------------------------------------------------------
+; DISK IO ROUTINES
+;-------------------------------------------------------------------------------
+; Init Disk IO
+;
+initdiskio:
+	; Get current RAM bank
+	ld      b,BF_SYSGETBNK  	; HBIOS GetBank function
+	RST     08          		; do it via RST vector, C=bank id
+	RET     NZ          		; had to replace this line below.
+	ld      a,c         		; put bank id in A
+	ld      (BID_USR),a  		; put bank id in Argument
+	RET
+;
+;-------------------------------------------------------------------------------
+; Read disk sector(s)
+; DE:HL is LBA, B is sector count, C is disk unit
+;
+diskread:
+;
+	; Seek to requested sector in DE:HL
+	ld	a,(currunit)
+	ld	c,a			; from the specified unit
+	set	7,d			; set LBA access flag
+	ld	b,BF_DIOSEEK		; HBIOS func: seek
+	rst	08			; do it
+	ret	nz			; handle error
+;
+	; Read sector(s) into buffer
+	ld	a,(currunit)
+	ld	c,a			; from the specified unit
+	ld	e,1			; read 1 sector
+	ld	hl,(dma)		; read into info sec buffer
+	ld	a,(BID_USR)		; get user bank to accum
+	ld	d,a			; and move to D
+	ld	b,BF_DIOREAD		; HBIOS func: disk read
+	rst	08			; do it
+	ret				; and done
+;
+;-------------------------------------------------------------------------------
+; WRITE disk sector(s)
+; DE:HL is LBA, B is sector count, C is disk unit
+;
+diskwrite:
+;
+	ld	a,(currunit)		; disk unit to read
+	ld	c,a			; put in C
+	ld	b,1			; one sector
+;
+	; Seek to requested sector in DE:HL
+	push	bc			; save unit & count
+	set	7,d			; set LBA access flag
+	ld	b,BF_DIOSEEK		; HBIOS func: seek
+	rst	08			; do it
+	pop	bc			; recover unit & count
+	ret	nz			; handle error
+;
+	; Read sector(s) into buffer
+	ld	e,b			; transfer count
+	ld	b,BF_DIOWRITE		; HBIOS func: disk read
+	ld	hl,(dma)		; read into info sec buffer
+	ld	a,(BID_USR)		; get user bank to accum
+	ld	d,a			; and move to D
+	rst	08			; do it
+	ret				; and done
+;
+;===============================================================================
+; Constants
+;===============================================================================
+;
+str_banner	.db	"\r\n"
+		.db	"Slice Label, v1.0, April 2025 - M.Pruden",0
+;
+str_err_una	.db	"  ERROR: UNA not supported by application",0
+str_err_inv	.db	"  ERROR: Invalid BIOS (signature missing)",0
+str_err_ver	.db	"  ERROR: Unexpected HBIOS version",0
+str_err_parm	.db	"  ERROR: Parameter error (SLABEL /? for usage)",0
+str_err_nodisk	.db	"  ERROR: Disk unit not available",0
+str_err_nomedia	.db	"  ERROR: Media not present",0
+str_err_badslc 	.db	"  ERROR: Slice specified is illegal",0
+str_err_sig	.db	"  ERROR: No system image on disk",0
+str_err_diskio	.db	"  ERROR: Disk I/O failure",0
+;
+str_usage	.db	"\r\n\r\n"
+		.db	"  Usage: SLABEL - list current labels\r\n"
+		.db	"         SLABEL unit[.slice]=label - Defines a label\r\n"
+		.db	"         SLABEL /? - Display this help info.\r\n"
+		.db	"         Options are case insensitive.\r\n",0
+;
+PRTSLC_HDR	.TEXT	"\r\n\r\n"
+		.TEXT	"Un.Sl Drive           \r\n"
+		.TEXT	"----- ----------------\r\n"
+		.DB	0
+;
+;===============================================================================
+; Working data
+;===============================================================================
+;
+currunit	.db	0		; parameters for disk unit, current unit
+currslice	.db	0		; parameters for disk slice, current slice
+lba		.dw	0, 0		; lba address (4 bytes), of slice
+newlabel	.dw	0		; address of parameter, new label to write
+;
+BID_USR		.db	0		; Bank ID for user bank
+dma		.dw	bl_infosec	; address for disk buffer
+;
+stksav		.dw	0		; stack pointer saved at start
+		.fill	stksiz,0	; stack
+stack		.equ	$		; stack top
+;
+;===============================================================================
+; Disk Buffer
+;===============================================================================
+;
+		; define origin of disk buffer above 8000 for performance.
+		.org	$8000
+;
+; Below is copied from ROM LDR
+; Boot info sector is read into area below.
+; The third sector of a disk device is reserved for boot info.
+;
+bl_infosec	.equ	$
+		.ds	(512 - 128)
+bb_metabuf	.equ	$
+bb_sig		.ds	2		; signature (0xA55A if set)
+bb_platform	.ds	1		; formatting platform
+bb_device	.ds	1		; formatting device
+bb_formatter	.ds	8		; formatting program
+bb_drive	.ds	1		; physical disk drive #
+bb_lu		.ds	1		; logical unit (lu)
+		.ds	1		; msb of lu, now deprecated
+		.ds	(bb_metabuf + 128) - $ - 32
+bb_protect	.ds	1		; write protect boolean
+bb_updates	.ds	2		; update counter
+bb_rmj		.ds	1		; rmj major version number
+bb_rmn		.ds	1		; rmn minor version number
+bb_rup		.ds	1		; rup update number
+bb_rtp		.ds	1		; rtp patch level
+bb_label	.ds	16		; 16 character drive label
+bb_term		.ds	1		; label terminator ('$')
+bb_biloc	.ds	2		; loc to patch boot drive info
+bb_cpmloc	.ds	2		; final ram dest for cpm/cbios
+bb_cpmend	.ds	2		; end address for load
+bb_cpment	.ds	2		; CP/M entry point (cbios boot)
+;
+;===============================================================================
+;
+	.end

Source/Build.cmd

@@ -12,6 +12,7 @@ call BuildZ1RCC || exit /b
 call BuildZZRCC || exit /b
 call BuildZRC512 || exit /b
 call BuildFZ80 || exit /b
+call BuildEZ512 || exit /b
 
 if "%1" == "dist" (
   call Clean || exit /b

Source/BuildEZ512.cmd

@@ -0,0 +1,4 @@
+@echo off
+setlocal
+
+pushd EZ512 && call Build || exit /b & popd

Source/CBIOS/cbios.asm

@@ -411,8 +411,7 @@ REBOOT:
 ;
 #IFDEF PLTWBW
 	; WARM START
-	LD	B,BF_SYSRESET		; SYSTEM RESTART
-	LD	C,BF_SYSRES_WARM	; WARM START
+	LD	BC,BC_SYSRES_WARM	; SYSTEM WARM RESTART
 	CALL	$FFF0			; CALL HBIOS
 #ENDIF
 ;
@@ -2199,8 +2198,7 @@ INIT:
 
 #ELSE
 	; GET CRITICAL BANK ID'S
-	LD	B,BF_SYSGET		; HBIOS FUNC=GET SYS INFO
-	LD	C,BF_SYSGET_BNKINFO	; HBIOS SUBFUNC=GET BANK ASSIGNMENTS
+	LD	BC,BC_SYSGET_BNKINFO	; HBIOS FUNC=GET SYS INFO;GET BANK ASSIGNMENTS
 	RST	08			; CALL HBIOS
 	LD	A,D			; GET HBIOS BANK RETURNED IN D
 	LD	(BNKBIOS),A		; ... AND SAVE IT
@@ -2213,8 +2211,7 @@ INIT:
   #ENDIF
 ;
 	; SOFT RESET HBIOS
-	LD	B,BF_SYSRESET		; HB FUNC: RESET
-	LD	C,BF_SYSRES_INT		; WARM START
+	LD	BC,BC_SYSRES_INT	; HB FUNC: RESET; WARM START
 	RST	08			; DO IT
 ;
   #IF DEBUG
@@ -2343,10 +2340,8 @@ INIT2:
 	LD	C,(HL)		; PUT UNIT NUM IN C
 	RST	08		; CALL HBIOS
 	LD	A,C		; GET ATTRIBUTES
-	AND	%10001111	; ISOLATE TYPE BITS
-	CP	%00000100	; NOT FLOPPY, TYPE = ROM?
-	JR	Z,INIT2A	; IF SO, ADJUST DEF DRIVE
-	CP	%00000111	; NOT FLOPPY, TYPE = FLASH?
+	AND	%10001101	; ISOLATE TYPE BITS, NOT FLOPPY
+	CP	%00000100	; TYPE=ROM/FLASH ; Att="0xxx01x0"
 	JR	NZ,INIT2X	; IF NOT THEN DONE
 ;
 INIT2A:
@@ -2496,8 +2491,7 @@ DEV_INIT000:
 DEV_INIT00:
 	; LOOP THRU DEVICES ADDING DEVICES TO DEVMAP
 	; CONSOLE DEVICE WAS ALREADY DONE, SO IT IS SKIPPED HERE
-	LD	B,BF_SYSGET		; HBIOS FUNC: GET SYS INFO
-	LD	C,BF_SYSGET_CIOCNT	; SUBFUNC: GET CIO UNIT COUNT
+	LD	BC,BC_SYSGET_CIOCNT	; HBIOS FUNC: GET SYS INFO; GET CIO UNIT COUNT
 	RST	08			; E := SERIAL UNIT COUNT
 	LD	B,E			; COUNT TO B
 	LD	C,0			; UNIT INDEX
@@ -2928,8 +2922,7 @@ DRV_INIT:
 	; DEVICES.  NON-HARD DISK UNITS ARE ALWAYS CONSIDERED
 	; ACTIVE, BUT HARD DISK UNITS ARE ONLY CONSIDERED ACTIVE
 	; IF THERE IS MEDIA IN THE DRIVE.
-	LD	B,BF_SYSGET
-	LD	C,BF_SYSGET_DIOCNT
+	LD	BC,BC_SYSGET_DIOCNT	; GET DISK UNIT COUNT
 	RST	08			; E := DISK UNIT COUNT
 	LD	B,E			; COUNT TO B
 	LD	A,B			; COUNT TO A
@@ -3435,6 +3428,63 @@ DEV15	.EQU	DEVUNK
 ;
 #ENDIF
 ;
+;
+;__________________________________________________________________________________________________
+;
+; INITIALIZATION Utilities
+;
+; PRINT VALUE OF A IN DECIMAL WITH LEADING ZERO SUPPRESSION
+;
+PRTDECB:
+	PUSH	HL
+	PUSH	AF
+	LD	L,A
+	LD	H,0
+	CALL	PRTDEC
+	POP	AF
+	POP	HL
+	RET
+;
+; PRINT VALUE OF HL IN DECIMAL WITH LEADING ZERO SUPPRESSION
+;
+PRTDEC:
+	PUSH	BC
+	PUSH	DE
+	PUSH	HL
+	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
+	CALL	PRTDEC1
+	POP	HL
+	POP	DE
+	POP	BC
+	RET
+PRTDEC1:
+	LD	A,'0' - 1
+PRTDEC2:
+	INC	A
+	ADD	HL,BC
+	JR	C,PRTDEC2
+	SBC	HL,BC
+	CP	E
+	JR	Z,PRTDEC3
+	LD	E,0
+	CALL	COUT
+PRTDEC3:
+	RET
+;
+;__________________________________________________________________________________________________
+;
+; INITIALIZATION Working Storage
+;
 DPHTOP	.DW	0			; CURRENT TOP OF DPH POOL
 DIRBUF	.DW	0			; DIR BUF POINTER
 HEAPTOP	.DW	BUFPOOL			; CURRENT TOP OF HEAP

Source/CBIOS/util.asm

@@ -28,10 +28,10 @@ PC_COLON:
 	LD	A,':'
 	JR	PC_PRTCHR
 
-PC_COMMA:
-	PUSH	AF
-	LD	A,','
-	JR	PC_PRTCHR
+;PC_COMMA:
+;	PUSH	AF
+;	LD	A,','
+;	JR	PC_PRTCHR
 
 PC_LBKT:
 	PUSH	AF
@@ -43,30 +43,30 @@ PC_RBKT:
 	LD	A,']'
 	JR	PC_PRTCHR
 
-PC_LT:
-	PUSH	AF
-	LD	A,'<'
-	JR	PC_PRTCHR
+;PC_LT:
+;	PUSH	AF
+;	LD	A,'<'
+;	JR	PC_PRTCHR
 
-PC_GT:
-	PUSH	AF
-	LD	A,'>'
-	JR	PC_PRTCHR
+;PC_GT:
+;	PUSH	AF
+;	LD	A,'>'
+;	JR	PC_PRTCHR
 
-PC_LPAREN:
-	PUSH	AF
-	LD	A,'('
-	JR	PC_PRTCHR
+;PC_LPAREN:
+;	PUSH	AF
+;	LD	A,'('
+;	JR	PC_PRTCHR
 
-PC_RPAREN:
-	PUSH	AF
-	LD	A,')'
-	JR	PC_PRTCHR
+;PC_RPAREN:
+;	PUSH	AF
+;	LD	A,')'
+;	JR	PC_PRTCHR
 
-PC_ASTERISK:
-	PUSH	AF
-	LD	A,'*'
-	JR	PC_PRTCHR
+;PC_ASTERISK:
+;	PUSH	AF
+;	LD	A,'*'
+;	JR	PC_PRTCHR
 
 PC_CR:
 	PUSH	AF
@@ -201,7 +201,7 @@ _REGDMP:
 	LD	A,'@'
 	CALL	COUT
 	POP	AF
-	
+
 	PUSH	BC
 	LD	BC,(REGDMP_PC)
 	CALL	PRTHEXWORD		; PC
@@ -235,7 +235,7 @@ _REGDMP:
 	POP	AF
 
 	;LD	SP,(RD_STKSAV)		; BACK TO ORIGINAL STACK FRAME
-	
+
 	JP	$FFFF			; RETURN, $FFFF IS DYNAMICALLY UPDATED
 REGDMP_RET	.EQU	$-2		; RETURN ADDRESS GOES HERE
 ;
@@ -340,17 +340,17 @@ ADDHLA1:
 ; IN:  MULTIPLY H BY E
 ; OUT: HL = RESULT, E = 0, B = 0
 ;
-MULT8:
-	LD D,0
-	LD L,D
-	LD B,8
-MULT8_LOOP:
-	ADD HL,HL
-	JR NC,MULT8_NOADD
-	ADD HL,DE
-MULT8_NOADD:
-	DJNZ MULT8_LOOP
-	RET
+;MULT8:
+;	LD D,0
+;	LD L,D
+;	LD B,8
+;MULT8_LOOP:
+;	ADD HL,HL
+;	JR NC,MULT8_NOADD
+;	ADD HL,DE
+;MULT8_NOADD:
+;	DJNZ MULT8_LOOP
+;	RET
 ;
 ; FILL MEMORY AT HL WITH VALUE A, LENGTH IN BC, ALL REGS USED
 ; LENGTH *MUST* BE GREATER THAN 1 FOR PROPER OPERATION!!!
@@ -364,54 +364,6 @@ FILL:
 	LDIR			; DO THE REST
 	RET			; RETURN
 ;
-; PRINT VALUE OF A IN DECIMAL WITH LEADING ZERO SUPPRESSION
-;
-PRTDECB:
-	PUSH	HL
-	PUSH	AF
-	LD	L,A
-	LD	H,0
-	CALL	PRTDEC
-	POP	AF
-	POP	HL
-	RET
-;
-; PRINT VALUE OF HL IN DECIMAL WITH LEADING ZERO SUPPRESSION
-;
-PRTDEC:
-	PUSH	BC
-	PUSH	DE
-	PUSH	HL
-	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
-	CALL	PRTDEC1
-	POP	HL
-	POP	DE
-	POP	BC
-	RET
-PRTDEC1:
-	LD	A,'0' - 1
-PRTDEC2:
-	INC	A
-	ADD	HL,BC
-	JR	C,PRTDEC2
-	SBC	HL,BC
-	CP	E
-	JR	Z,PRTDEC3
-	LD	E,0
-	CALL	COUT
-PRTDEC3:
-	RET
-;
 ; PRINT THE HEX BYTE VALUE IN A
 ;
 PRTHEXBYTE:
@@ -457,9 +409,9 @@ HEXASCII:
 HEXCONV:
 	AND	0FH	     ;LOW NIBBLE ONLY
 	ADD	A,90H
-	DAA	
+	DAA
 	ADC	A,40H
-	DAA	
+	DAA
 	RET
 ;
 ;****************************
@@ -488,40 +440,40 @@ BCD2BYTE:
 ;	[0..99] => [00H..99H]
 ;*****************************
 ;
-BYTE2BCD:
-	PUSH	BC
-	LD	B,10
-	LD	C,-1
-BYTE2BCD1:
-	INC	C
-	SUB	B
-	JR	NC,BYTE2BCD1
-	ADD	A,B
-	LD	B,A
-	LD	A,C
-	ADD	A,A
-	ADD	A,A
-	ADD	A,A
-	ADD	A,A
-	OR	B
-	POP	BC
-	RET
+;BYTE2BCD:
+;	PUSH	BC
+;	LD	B,10
+;	LD	C,-1
+;BYTE2BCD1:
+;	INC	C
+;	SUB	B
+;	JR	NC,BYTE2BCD1
+;	ADD	A,B
+;	LD	B,A
+;	LD	A,C
+;	ADD	A,A
+;	ADD	A,A
+;	ADD	A,A
+;	ADD	A,A
+;	OR	B
+;	POP	BC
+;	RET
 ;
 ; PRINT A BYTE BUFFER IN HEX POINTED TO BY DE
 ; REGISTER A HAS SIZE OF BUFFER
 ;
-PRTHEXBUF:
-	OR	A
-	RET	Z		; EMPTY BUFFER
+;PRTHEXBUF:
+;	OR	A
+;	RET	Z		; EMPTY BUFFER
 ;
-	LD	B,A
-PRTHEXBUF1:
-	CALL	PC_SPACE
-	LD	A,(DE)
-	CALL	PRTHEXBYTE
-	INC	DE
-	DJNZ	PRTHEXBUF1
-	RET
+;	LD	B,A
+;PRTHEXBUF1:
+;	CALL	PC_SPACE
+;	LD	A,(DE)
+;	CALL	PRTHEXBYTE
+;	INC	DE
+;	DJNZ	PRTHEXBUF1
+;	RET
 ;
 ; LEFT SHIFT DE:HL BY B BITS (B > 0)
 ;

Source/CPM22/ReadMe.txt

@@ -38,7 +38,7 @@ It is an independent disassembly and reconstruction of CCP/BDOS.
 DRI CPM22PAT01 was already applied.  Unclear why, but the BDOS
 source was checking for a blank instead of a ctrl-s in the
 KBSTAT routine.  Ctrl-s seems to be correct based on all other
-BDOS images I have encountered.  Also, these files imbed the
+BDOS images I have encountered.  Also, these files embed the
 CP/M version number into the serial number fields.  Other than
 this, they are byte identical to the OS2CCP/OS3BDOS images above.
 
@@ -51,17 +51,24 @@ BDOS22.ASM - Modified ORG & fix for ctrl-S
 CCPB03 & BDOSB01
 ----------------
 
-Sourced from N8VEM effort to create an enhanced
-variant of CP/M 2.2.
+These files were derived from a disassembly of the Jade DD CP/M-80
+image by William Beech in 1982.
 
-It appears to be a disassembly and reconstruction of CCP/BDOS,
-but there are no comments attributing the work.  DRI CPM22PAT01
-was already applied.  The message string literals are all
+- Modified by Bill Beech for global CP/M size configuration
+  and separate CCP and BDOSE 2013.
+
+- Modified by Bill Beech for addition of MON
+  command and display/change of user on command line
+  1984.  Also removed all SN checks.
+
+Eventually modified as part of the N8VEM project and converted to
+the Z80 instruction set.
+
+DRI CPM22PAT01 has been applied.  The message string literals are all
 in CAPS in BDOS.  Additionally, there is explicit filler of 0x55
 value bytes at the end of the CCP/BDOS files padding their
 length out to full page.  Other than this, the BDOS
-is byte identical to the others above.  CCP contains multiple
-enhancements and is, therefore, not identical to others.
+is byte identical to the others above.
 
 CCPB03.ASM - Enhanced reassembly of CCP
 

Source/CPM22/loader.asm

@@ -11,7 +11,7 @@
 ; THE RETROBREW COMPUTING GROUP HAS BEEN USING A CONVENTION OF PREFIXING THE
 ; OS IMAGE WITH 3 SECTORS (512 BYTES X 3 FOR A TOTAL OF 1536 BYTES):
 ;
-;   SECTOR 1: IBM-PC STYLE BOOT BLOCK CONTAINING BOOTSTRAP, 
+;   SECTOR 1: IBM-PC STYLE BOOT BLOCK CONTAINING BOOTSTRAP,
 ;             PARTITION TABLE, AND BOOT SIGNATURE
 ;   SECTOR 2: RESERVED
 ;   SECTOR 3: METADATA
@@ -29,6 +29,7 @@
 ;
 SYS_ENT		.EQU	$E600		; SYSTEM (OS) ENTRY POINT ADDRESS
 SYS_LOC		.EQU	$D000		; STARTING ADDRESS TO LOAD SYSTEM IMAGE
+SYS_SEC		.EQU	22		; NUMBER OF SECTORS TO READ
 SYS_END		.EQU	$FE00		; ENDING ADDRESS OF SYSTEM IMAGE
 ;
 SEC_SIZE	.EQU	512		; DISK SECTOR SIZE
@@ -76,8 +77,8 @@ BOOT:
 	CALL	PRTDOT		; PROGRESS
 ;
 	LD	C,$42		; UNA FUNC: READ SECTORS
-	LD	DE,$D000	; STARTING ADDRESS FOR IMAGE
-	LD	L,22		; READ 22 SECTORS
+	LD	DE,SYS_LOC	; STARTING ADDRESS FOR IMAGE
+	LD	L,SYS_SEC	; NUMBER OF SECTORS
 	CALL	$FFFD		; DO READ
 	JR	NZ,ERROR	; HANDLE ERROR
 	CALL	PRTDOT		; PROGRESS
@@ -147,10 +148,10 @@ HEXASCII:
 HEXCONV:
 	AND	$0F	     ;LOW NIBBLE ONLY
 	ADD	A,$90
-	DAA	
+	DAA
 	ADC	A,$40
-	DAA	
-	RET	
+	DAA
+	RET
 ;
 ERROR:
 	LD	DE,STR_ERR		; POINT TO ERROR STRING
@@ -252,7 +253,7 @@ PR_SIG		.DB	$5A,$A5		; SIGNATURE GOES HERE
 PR_WP		.DB	0		; (1) WRITE PROTECT BOOLEAN
 PR_UPDSEQ	.DW	0		; (2) PREFIX UPDATE SEQUENCE NUMBER (DEPRECATED?)
 PR_VER		.DB	RMJ,RMN,RUP,RTP	; (4) OS BUILD VERSION
-PR_LABEL	.DB	"Unlabeled$$$$$$$","$"	; (17) DISK LABEL (EXACTLY 16 BYTES!!!)
+PR_LABEL	.DB	"CP/M 2.2$$$$$$$$","$"	; (17) DISK LABEL (EXACTLY 16 BYTES!!!)
 		.DW	0		; (2) DEPRECATED
 PR_LDLOC	.DW	SYS_LOC		; (2) ADDRESS TO START LOADING SYSTEM
 PR_LDEND	.DW	SYS_END		; (2) ADDRESS TO STOP LOADING SYSTEM

Source/CPM3/biosldr.z80

@@ -668,15 +668,15 @@ lba	ds	4	; current lba
 stack	equ	$
 stksav	ds	2
 
-csvbufs	equ	256
-alvbufs	equ	512
-dirbufs	equ	512
-dtabufs	equ	512
+	; CPMLDR.SYS must be a multiple of 512 bytes (one sector)
+	; for the RomWBW loader.  Below padding as needed to force
+	; this.
+	ds	80h
 
-;csvbuf	ds	256	; length (CSV) = ((DRM+1)/4)
-;alvbuf	ds	512	; length (ALV) = ((DSM+1)/4)
-;dirbuf	ds	512	; sector buffer
-;dtabuf	ds	512	; sector buffer
+csvbufs	equ	256	; length (CSV) = ((DRM+1)/4)
+alvbufs	equ	512     ; length (ALV) = ((DSM+1)/4)
+dirbufs	equ	512     ; sector buffer
+dtabufs	equ	512     ; sector buffer
 
 ; Trying to save space.  The loader must fit underneath
 ; the start of BNKBDOS3 and we have a big BNKBDOS because

Source/CPM3/loader.asm

@@ -11,7 +11,7 @@
 ; THE RETROBREW COMPUTING GROUP HAS BEEN USING A CONVENTION OF PREFIXING THE
 ; OS IMAGE WITH 3 SECTORS (512 BYTES X 3 FOR A TOTAL OF 1536 BYTES):
 ;
-;   SECTOR 1: IBM-PC STYLE BOOT BLOCK CONTAINING BOOTSTRAP, 
+;   SECTOR 1: IBM-PC STYLE BOOT BLOCK CONTAINING BOOTSTRAP,
 ;             PARTITION TABLE, AND BOOT SIGNATURE
 ;   SECTOR 2: RESERVED
 ;   SECTOR 3: METADATA
@@ -31,6 +31,7 @@
 ; THE SIZE OF CPMLDR.BIN CHANGES, SYS_SIZ MUST BE UPDATED!!!
 ;
 SYS_SIZ		.EQU	$0F00		; SIZE OF CPMLDR.BIN
+SYS_SEC		.EQU	8		; NUMBER OF SECTORS TO READ
 SYS_ENT		.EQU	$0100		; SYSTEM (OS) ENTRY POINT ADDRESS
 SYS_LOC		.EQU	$0100		; STARTING ADDRESS TO LOAD SYSTEM IMAGE
 SYS_END		.EQU	SYS_SIZ + SYS_LOC	; ENDING ADDRESS OF SYSTEM IMAGE
@@ -57,6 +58,8 @@ PT_SIZ		.EQU	$40
 ; THE FOLLOWING BOOTSTRAP CODE IS BUILT TO ASSUME IT WILL BE EXECUTED AT A STARTING
 ; ADDRESS OF $8000.  THIS CODE IS *ONLY* FOR UNA.  THE ROMWBW ROM BOOTLOADER
 ; USES THE METADATA TO LOAD THE OS DIRECTLY.
+;
+; UNA DOES NOT SUPPORT CP/M 3 THIS CODE IS NOT USED, AND COULD BE REMOVED
 ;
 	.ORG	$8000
 	JR	BOOT
@@ -80,8 +83,8 @@ BOOT:
 	CALL	PRTDOT		; PROGRESS
 ;
 	LD	C,$42		; UNA FUNC: READ SECTORS
-	LD	DE,$D000	; STARTING ADDRESS FOR IMAGE
-	LD	L,22		; READ 22 SECTORS
+	LD	DE,SYS_LOC	; STARTING ADDRESS FOR IMAGE
+	LD	L,SYS_SEC	; NUMBER OF SECTORS
 	CALL	$FFFD		; DO READ
 	JR	NZ,ERROR	; HANDLE ERROR
 	CALL	PRTDOT		; PROGRESS
@@ -151,10 +154,10 @@ HEXASCII:
 HEXCONV:
 	AND	$0F	     ;LOW NIBBLE ONLY
 	ADD	A,$90
-	DAA	
+	DAA
 	ADC	A,$40
-	DAA	
-	RET	
+	DAA
+	RET
 ;
 ERROR:
 	LD	DE,STR_ERR		; POINT TO ERROR STRING
@@ -256,7 +259,7 @@ PR_SIG		.DB	$5A,$A5		; SIGNATURE GOES HERE
 PR_WP		.DB	0		; (1) WRITE PROTECT BOOLEAN
 PR_UPDSEQ	.DW	0		; (2) PREFIX UPDATE SEQUENCE NUMBER (DEPRECATED?)
 PR_VER		.DB	RMJ,RMN,RUP,RTP	; (4) OS BUILD VERSION
-PR_LABEL	.DB	"Unlabeled$$$$$$$","$"	; (17) DISK LABEL (EXACTLY 16 BYTES!!!)
+PR_LABEL	.DB	"CP/M 3.0$$$$$$$$","$"	; (17) DISK LABEL (EXACTLY 16 BYTES!!!)
 		.DW	0		; (2) DEPRECATED
 PR_LDLOC	.DW	SYS_LOC		; (2) ADDRESS TO START LOADING SYSTEM
 PR_LDEND	.DW	SYS_END		; (2) ADDRESS TO STOP LOADING SYSTEM

Source/Doc/Basic.h

@@ -1,4 +1,4 @@
-$define{doc_ver}{Version 3.5}$
+$define{doc_ver}{Version 3.6}$
 $define{doc_product}{RomWBW}$
 $define{file_root}{https://github.com/wwarthen/RomWBW/raw/master}$
 $define{doc_root}{$file_root$/Doc}$
@@ -8,12 +8,20 @@ $define{doc_date}{$date{%d %b %Y}$}$
 $ifndef{doc_authmail}$ $define{doc_authmail}{wwarthen@gmail.com}$ $endif$
 $define{doc_orgname}{RetroBrew Computers Group}$
 $define{doc_orgurl}{www.retrobrewcomputers.org}$
+$define{doc_intro}{[RomWBW Introduction]($doc_root$/RomWBW Introduction.pdf)}$
 $define{doc_user}{[RomWBW User Guide]($doc_root$/RomWBW User Guide.pdf)}$
 $define{doc_sys}{[RomWBW System Guide]($doc_root$/RomWBW System Guide.pdf)}$
 $define{doc_apps}{[RomWBW Applications]($doc_root$/RomWBW Applications.pdf)}$
 $define{doc_catalog}{[RomWBW Disk Catalog]($doc_root$/RomWBW Disk Catalog.pdf)}$
-$define{doc_errata}{[RomWBW Errata]($doc_root$/RomWBW Errata.pdf)}$
-
+$define{doc_hardware}{[RomWBW Hardware]($doc_root$/RomWBW Hardware.pdf)}$
+$ifdef{GFM}$
+  $define{doc_intro}{[RomWBW Introduction](Introduction.md)}$
+  $define{doc_user}{[RomWBW User Guide](UserGuide.md)}$
+  $define{doc_sys}{[RomWBW System Guide](SystemGuide.md)}$
+  $define{doc_apps}{[RomWBW Applications](Applications.md)}$
+  $define{doc_catalog}{[RomWBW Disk Catalog](Catalog.md)}$
+  $define{doc_hardware}{[RomWBW Hardware](Hardware.md)}$
+$endif$
 ---
 title: $doc_product$ $doc_title$
 subtitle: $doc_ver$

Source/Doc/Build.cmd

@@ -15,20 +15,24 @@ set PATH=%TOOLS%\gpp;%PATH%
 
 if not "%1"=="" (call :GenDoc %1 & goto :eof)
 
-call :GenDoc ReadMe || exit /b
+:: call :GenDoc ReadMe || exit /b
+call :GenDoc Introduction || exit /b
 call :GenDoc UserGuide || exit /b
 call :GenDoc SystemGuide || exit /b
 call :GenDoc Applications || exit /b
 call :GenDoc Catalog || exit /b
-call :GenDoc Errata || exit /b
+call :GenDoc Hardware || exit /b
 
-if exist ReadMe.gfm copy Readme.gfm ..\..\ReadMe.md || exit /b
-if exist ReadMe.txt copy ReadMe.txt ..\..\ReadMe.txt || exit /b
+:: if exist ReadMe.gfm copy Readme.gfm ..\..\ReadMe.md || exit /b
+:: if exist ReadMe.txt copy ReadMe.txt ..\..\ReadMe.txt || exit /b
+if exist Introduction.gfm copy Introduction.gfm ..\..\ReadMe.md || exit /b
+if exist Introduction.txt copy Introduction.txt ..\..\ReadMe.txt || exit /b
+if exist Introduction.pdf copy Introduction.pdf "..\..\Doc\RomWBW Introduction.pdf" || exit /b
 if exist UserGuide.pdf copy UserGuide.pdf "..\..\Doc\RomWBW User Guide.pdf" || exit /b
 if exist SystemGuide.pdf copy SystemGuide.pdf "..\..\Doc\RomWBW System Guide.pdf" || exit /b
 if exist Applications.pdf copy Applications.pdf "..\..\Doc\RomWBW Applications.pdf" || exit /b
 if exist Catalog.pdf copy Catalog.pdf "..\..\Doc\RomWBW Disk Catalog.pdf" || exit /b
-if exist Errata.pdf copy Errata.pdf "..\..\Doc\RomWBW Errata.pdf" || exit /b
+if exist Hardware.pdf copy Hardware.pdf "..\..\Doc\RomWBW Hardware.pdf" || exit /b
 
 echo.
 goto :eof
@@ -53,4 +57,4 @@ pandoc %1.tmp -f markdown -t gfm-yaml_metadata_block -s -o %1.gfm --default-imag
 ::pandoc %1.tmp -f markdown -t gfm-yaml_metadata_block -s -o %1.txt --markdown-headings=setext --default-image-extension=png || exit /b
 pandoc %1.tmp -f markdown -t plain+gutenberg -s -o %1.txt || exit /b
 
-goto :eof
+goto :eof

Source/Doc/Catalog.md

@@ -70,11 +70,12 @@ disks should now be fully described.
   CP/M 3.  Applications have been patched according to the DRI
   patch list.
 
-- **ZPM3**: Digital Research CP/M-80 2.2 Distribution Files
+- **ZPM3**: ZPM3 Distribution Files
 
-  Documentation: *CPM Manual.pdf*
+  Documentation: *ZPM3.txt*
 
-  These files are from Simeon Cran's ZPM3 operating system distribution.
+  These files are from Simeon Cran's official distribution of ZPM3. 
+  All known patches have been applied.
 
 `\clearpage`{=latex}
 
@@ -381,11 +382,10 @@ The following files appear in User Area 0
 | `GET.COM`     | DRI CPM+ Temporarily get console input form a disk file                |
 | `HELP.COM`    | DRI CPM+ Display information on how to use commands                    |
 | `HELP.HLP`    | DRI CPM+ Databse of help information for HELP.COM                      |
-| `HEXCOM.COM`  | DRI CPM+ Create a COM file from a hex file output by MAC               |
+| `HEXCOM.COM`  | DRI CPM+ Create a COM file from a hex file (replaces LOAD.COM)         |
 | `INITDIR.COM` | DRI CPM+ Initializes a disk to allow time and date stamping            |
 | `LIB.COM`     | DRI object file library manager                                        |
 | `LINK.COM`    | DRI object file linker                                                 |
-| `LOAD.COM`    | DRI loader for Intel hex files                                         |
 | `MAC.COM`     | DRI 8080 macro assembler                                               |
 | `PATCH.COM`   | DRI CPM+ Display or install patch to the CPM+ system or command files  |
 | `PIP.COM`     | DRI CPM+ Periperal Interchange Program                                 |
@@ -538,8 +538,6 @@ This is a generic ZPM3 adaptation for RomWBW.
 | `GENCPM.COM`   | 15            | DRI CPM3 Utility to Create a memory image of CPM3.SYS        |
 | `GOTO.COM`     | 15            |                                                              |
 | `HELPC15.CFG`  | 14            |                                                              |
-| `HP-RPN.HLP`   | 10            | Help File for HP RPN Calculators ?                           |
-| `HP-ZP.HLP`    | 10            | Help File for HP ZP Calculators ?                            |
 | `IF.COM`       | 15            | Extended flow control tester for FCP (v1.6 Type 3)           |
 | `IF.HLP`       | 10            |                                                              |
 | `LOADSEG.COM`  | 15            | ZCCP Utility to Load RSXes, TCAPs and Named Directory files. |
@@ -559,9 +557,6 @@ This is a generic ZPM3 adaptation for RomWBW.
 | `ZF11.CFG`     | 14            |                                                              |
 | `ZFMACRO.HLP`  | 10            |                                                              |
 | `ZHELP.COM`    | 15            |                                                              |
-| `ZP.COM`       | 15            | Patch utility edits files, disk sectors, or memory           |
-| `ZP.HLP`       | 10            | Help File for ZP.COM                                         |
-| `ZP17.CFG`     | 14            |                                                              |
 | `ZSHOW.COM`    | 15            | displays amount of information about your Z-System           |
 
 ### Additional Files
@@ -579,7 +574,7 @@ This is a generic ZPM3 adaptation for RomWBW.
 
 The following files came from from Microcode Consulting. The official
 distribution files can be found on the Microcode Consulting website at
-[https://www.microcodeconsulting.com/z80/qpm.htm].
+<https://www.microcodeconsulting.com/z80/qpm.htm>.
 Also included in this image are debugz, and linkz frm the same company.
 
 This disk includes the standard DRI CP/M 2.2 files in addition to the
@@ -657,7 +652,7 @@ look a little strange depending on the terminal emulation you are using.
 
 User area 4 contains a full implementation of the CP/NET 1.2 client 
 provided by Doug Miller. Please refer to
-[https://github.com/durgadas311/cpnet-z80] for more information, 
+<https://github.com/durgadas311/cpnet-z80> for more information, 
 complete documentation and the latest source code.
 
 Please refer to the RomWBW User Guide for instructions on installing
@@ -672,10 +667,12 @@ The following are found in
 
 | **File**        | **CP/NET Version**  | **OS**          | **Hardware**            |
 |-----------------|---------------------|-----------------|-------------------------|
-| CPN12MT.LBR     | CP/NET 1.2          | CP/M 2.2        | RCBus w/ MT011          |
-| CPN3MT.LBR      | CP/NET 3            | CP/M 3          | RCBus w/ MT011          |
-| CPN12DUO.LBR    | CP/NET 1.2          | CP/M 2.2        | Duodyne w/ Disk I/O     |
-| CPN3DUO.LBR     | CP/NET 3            | CP/M 3          | Duodyne w/ Disk I/O     |
+| `CPN12MT.LBR`   | CP/NET 1.2          | CP/M 2.2        | RCBus w/ MT011          |
+| `CPN3MT.LBR`    | CP/NET 3            | CP/M 3          | RCBus w/ MT011          |
+| `CPN12DUO.LBR`  | CP/NET 1.2          | CP/M 2.2        | Duodyne w/ Disk I/O     |
+| `CPN3DUO.LBR`   | CP/NET 3            | CP/M 3          | Duodyne w/ Disk I/O     |
+| `CPN12SER.LBR`  | CP/NET 1.2          | CP/M 2.2        | RomWBW Serial Port      |
+| `CPN3SER.LBR`   | CP/NET 3            | CP/M 3          | RomWBW Serial Port      |
 
 ## General Purpose Applications
 
@@ -692,34 +689,34 @@ RomWBW enhancements.  These applications are typically documented in the
 "RomWBW Applications.pdf" document in the Doc directory of the
 RomWBW Distribution.
 
-| **File**       | **Source**      | **Description**                                               |
-|----------------|-----------------|---------------------------------------------------------------|
-| `ASSIGN.COM`   | RomWBW          | Assign,remove,swap drive letters of RomWBW disk slices        |
-| `CLRDIR.COM`   | Max Scane       | Initializes the directory area of a disk                      |  
-| `COPYSL.COM`   | M.Pruden        | Copy CPM Hard Disk Slices                                     |  
-| `COPYSL.DOC`   | M.Pruden        | Documentation for COPYSL.COM                                  |  
-| `CPUSPD.COM`   | RomWBW          | CPU Speed                                                     |  
-| `FAT.COM`      | RomWBW          | MS-DOS FAT filesystem tool (list, copy, delete, format, etc.) |  
-| `FDISK80.COM`  | John Coffman    | Hard disk partitioning tool                                   |  
-| `FDU.COM`      | RomWBW          | Floppy Disk Utility, Test and format floppy disks             |  
-| `FDU.DOC`      | RomWBW          | Documentation for FDU                                         |  
-| `FLASH.COM`    | Will Sowerbutts | Program FLASH chips in-situ                                   |  
-| `FLASH.DOC`    | Will Sowerbutts | Documentation for FLASH                                       |  
-| `FORMAT.COM`   | RomWBW          | Placeholder application with formatting instructions          |  
-| `HTALK.COM`    | Tom Plano       | Terminal utility talking directly to HBIOS Character Units    |  
-| `MODE.COM`     | RomWBW          | Change serial line characteristics (baud rate, etc.)          |  
-| `REBOOT.COM`   | MartinR         | Cold or Warm Boot the RomWBW System                           |  
-| `RTC.COM`      | Andrew Lynch    | Test real time clock hardware on your system                  |  
-| `SURVEY.COM`   | RomWBW          | Display system resources summary                              |  
-| `SYSCOPY.COM`  | RomWBW          | Copy system tracks to disks (make bootable)                   |  
-| `TALK.COM`     | RomWBW          | Route console I/O to & from specified serial port             |  
-| `TIMER.COM`    | RomWBW          | Test and display system timer ticks                           |  
-| `TUNE.COM`     | RomWBW          | Play .PT2, .PT3, and .MYM audio files on supported hardware   |  
-| `VGMPLAY.COM`  |                 | Simple player for VGM (Video Game Music) files.               |
-| `WDATE.COM`    | Kevin Boone     | Utility to configure RTC Date.                                |  
-| `XM.COM`       | RomWBW          | XModem file transfer application                              |  
+| **File**       | **Source**        | **Description**                                               |
+|----------------|-------------------|---------------------------------------------------------------|
+| `ASSIGN.COM`   | RomWBW            | Assign,remove,swap drive letters of RomWBW disk slices        |
+| `CLRDIR.COM`   | Max Scane         | Initializes the directory area of a disk                      |  
+| `COPYSL.COM`   | M.Pruden          | Copy CPM Hard Disk Slices                                     |  
+| `COPYSL.DOC`   | M.Pruden          | Documentation for COPYSL.COM                                  |  
+| `CPUSPD.COM`   | RomWBW            | CPU Speed                                                     |  
+| `FAT.COM`      | RomWBW            | MS-DOS FAT filesystem tool (list, copy, delete, format, etc.) |  
+| `FDISK80.COM`  | John Coffman      | Hard disk partitioning tool                                   |  
+| `FDU.COM`      | RomWBW            | Floppy Disk Utility, Test and format floppy disks             |  
+| `FDU.DOC`      | RomWBW            | Documentation for FDU                                         |  
+| `FLASH.COM`    | Will Sowerbutts   | Program FLASH chips in-situ                                   |  
+| `FLASH.DOC`    | Will Sowerbutts   | Documentation for FLASH                                       |  
+| `FORMAT.COM`   | RomWBW            | Placeholder application with formatting instructions          |  
+| `HTALK.COM`    | Tom Plano         | Terminal utility talking directly to HBIOS Character Units    |  
+| `MODE.COM`     | RomWBW            | Change serial line characteristics (baud rate, etc.)          |  
+| `REBOOT.COM`   | MartinR           | Cold or Warm Boot the RomWBW System                           |  
+| `RTC.COM`      | Andrew Lynch      | Test real time clock hardware on your system                  |  
+| `SURVEY.COM`   | RomWBW            | Display system resources summary                              |  
+| `SYSCOPY.COM`  | RomWBW            | Copy system tracks to disks (make bootable)                   |  
+| `TALK.COM`     | RomWBW            | Route console I/O to & from specified serial port             |  
+| `TIMER.COM`    | RomWBW            | Test and display system timer ticks                           |  
+| `TUNE.COM`     | RomWBW            | Play .PT2, .PT3, and .MYM audio files on supported hardware   |  
+| `VGMPLAY.COM`  |                   | Simple player for VGM (Video Game Music) files.               |
+| `WDATE.COM`    | Kevin Boone       | Utility to configure RTC Date.                                |  
+| `XM.COM`       | RomWBW            | XModem file transfer application                              |  
 
-Then we have some more general purpose applcations.
+Then we have some more general purpose applications.
 In general, there is no documentation for these applications included with the RomWBW
 distribution.  Some provide command line help themselves.  Some are fairly obvious.
 
@@ -746,7 +743,9 @@ distribution.  Some provide command line help themselves.  Some are fairly obvio
 | `SUPERSUB.DOC` |                   | Documentation for SUPERSUB                             |  
 | `SYSGEN.COM`   | DRI               | Copy system tracks to disks                            |  
 | `TBASIC.COM`   | Dimitri Theulings | Tasty Basic. This also exists as a Rom appication      |
-| `TDLBASIC.COM` |                   | TDL Zapple 12K BASIC language interpreter              |  
+| `TDLBASIC.COM` |                   | TDL Zapple 12K BASIC language interpreter              |
+| `TE.COM`       | Ladislau Szilagyi | RomWBW enhanced version of TE editor                   |  
+| `TE.DOC`       | Ladislau Szilagyi | TE Editor Documentation                                |  
 | `UNARC.COM`    |                   | Extract file(s) from .ARC or .ARK archive              |  
 | `UNARC.DOC`    |                   | Documentation for UNARC                                |  
 | `UNCR.COM`     |                   | Decompress Crunched file(s). See CRUNCH.COM            |  
@@ -789,6 +788,8 @@ The following files are found in
 | `COPY.COM`     | Z                 | File copier with ZSDOS date stamping awareness        |
 | `COPY.CFG`     | Z                 | ZCNFG configuration file for COPY application         |
 | `EDITNDR.COM`  | Z3                | Edit named directory register in memory.              |
+| `HP-RPN.HLP`   | Z3                | Help File for ZP.COM - HP RPN Calculators             |
+| `HP-ZP.HLP`    | Z3                | Help File for ZP.COM - HP ZP Calculators              |
 | `KERCPM22.COM` | CPM22             | Kermit communication application                      |
 | `KERCPM3.COM`  | CPM3              | Kermit communication application                      |
 | `LBREXT.COM`   | Z                 | Extract file from .LBR libraries                      |
@@ -814,6 +815,9 @@ The following files are found in
 | `ZCNFG24.CFG`  | Z                 | Configuration file for ZCNFG.COM                      |
 | `ZEX.COM`      | Z3                | A memory-based command file processor, like SUBMIT    |
 | `ZEX.CFG`      | Z3                | ZCNFG configuration file for ZEX program              |
+| `ZP.COM`       | Z3                | Screen-oriented file/disk/memory record patcher (ZAP) |
+| `ZP.HLP`       | Z3                | Help File for ZP.COM                                  |
+| `ZP17.CFG`     | Z3                | Configuration file for ZP.COM                         |
 | `ZXD.CFG`      | Z                 | Configuration file for ZXD.COM                        |
 | `ZXD.COM`      | Z                 | Extended directory utility w/ date/time stamp support |
 | `Z3LOC.COM`    | Z3                | Display info of the ZCPR3 CCP, BDOS, and BIOS         |  
@@ -924,12 +928,12 @@ The following files are found in
 
 | **File**       | **Description**                                           |
 |----------------|-----------------------------------------------------------|
-| HDIR.COM       |                                                           |
-| R.COM          | transfer files between the simulator and host file system |
-| RSETSIMH.COM   | --                                                        |
-| TIMER.COM      | --                                                        |
-| URL.COM        | --                                                        |
-| W.COM          | transfer files between the simulator and host file system |
+| `HDIR.COM`     |                                                           |
+| `R.COM`        | transfer files between the simulator and host file system |
+| `RSETSIMH.COM` | --                                                        |
+| `TIMER.COM`    | --                                                        |
+| `URL.COM`      | --                                                        |
+| `W.COM`        | transfer files between the simulator and host file system |
 
 ## Testing Applications
 
@@ -976,7 +980,7 @@ The following files are found in
 | `ZEXDOC.COM`        | Z80 Instruction Set Exerciser                           |
 
 And The following CPU Tests - Which are probably originally from this source. 
-[https://github.com/raxoft/z80test]
+<https://github.com/raxoft/z80test>
 
 | **File**       | **Description**                                               |
 |----------------|---------------------------------------------------------------|
@@ -999,7 +1003,7 @@ including MS-DOS, Apple II DOS 3.3 and PRoDOS, Commodore 64, Macintosh and
 Amiga. This disk contains the CP/M version of that compiler. A cross-compiler
 for MS-DOS or Windows XP is also available.
 
-For full documentation, see [https://www.aztecmuseum.ca] 
+For full documentation, see <https://www.aztecmuseum.ca> 
 The user manual is available in the Doc/Language directory
 Aztec_C_1.06_User_Manual_Mar84.pdf
 
@@ -1045,10 +1049,10 @@ NOTE : The above is incomplete
 
 The Cowgol 2.0 compiler and related tools.
 These files were provided by Ladislau Szilagyi and were sourced
-from his GitHub repository at [https://github.com/Laci1953/Cowgol_on_CP_M].
+from his GitHub repository at <https://github.com/Laci1953/Cowgol_on_CP_M>.
 
 The primary distribution site for Cowgol 2.0 is at
-[https://github.com/davidgiven/cowgol].
+<https://github.com/davidgiven/cowgol>.
 The user manual is available in the Doc/Language directory
 Cowgol Language.pdf
 
@@ -1056,25 +1060,66 @@ The following files are found in
 
 *  /Source/Images/d_cowgol
 
-| **File**     | **Description**                            |
-|--------------|--------------------------------------------|
-| ADVENT.COW   | Adventure game program source              |
-| ADVENT.SUB   | Submit file to build ADVENT                |
-| ADVENT?.TXT  | Adventure game program resource            |
-| ADVMAIN.COW  | Adventure game program source              |
-| RAND.AS      | Assembler Library File                     |
-| COWBE.COM    |                                            |
-| COWFE.COM    | RomWBW specific (Memory Manage) version    |
-| COWLINK.COM  |                                            |
-| DYNMSORT.COW | demonstrates a sort algorithm              |
-| DYNMSORT.SUB | Submit file to build DYNMSORT              |
-| HEXDUMP.COW  | a simple hex dump utility, purely a Cowgol |
-| HEXDUMP.SUB  | Submit file to build HEXDUMP               |
-| HMERGES.C    | C Library File                             |
-| XRND.AS      | Assembler Library File                     |
-| -            | -                                          |
-
-NOTE : The above is incomplete
+| **File**       | **Description**                            |
+|----------------|--------------------------------------------|
+| `$EXEC.COM`    | HiTech C batch processor which launches the Cowgol toolchain executables |
+| `ADVENT.COW`   | Adventure game program source |
+| `ADVENT.SUB`   | SUBMIT file to build Adventure game |
+| `ADVENT?.TXT`  | Adventure game program resources |
+| `ADVMAIN.COW`  | Adventure game program source |
+| `ADVTRAV.COW`  | Adventure game component source |
+| `ARGV.COH`     | Cowgol include file providing command line argument processing |
+| `C.LIB`        | HI-TECH C runtime library |
+| `CGEN.COM`     | HiTech C compiler pass 2 |
+| `COMMFILE.COH` | Include file providing file I/O |
+| `COMMON.COH`   | Include file providing common functions |
+| `COWBE.COM`    | Cowgol back end which builds the cowgol object files (optimized) |
+| `COWFE.COM`    | Cowgol front end which parses the source file (optimized) |
+| `COWFIX.COM`   | Interface to Z80AS -- performs code optimizations |
+| `COWGOL.COH`   | Include file providing standard Cowgol functions |
+| `COWGOL.COM`   | Interprets the command line and generates $EXEC run requests (a variant of HiTech C.COM) |
+| `COWGOL.COO`   | Cowgol object file with ??? |
+| `COWGOL.LIB`   | ??? |
+| `COWGOLC.COH`  | Cowgol include file providing ??? |
+| `COWLINK.COM`  | Cowgol linker which binds all the cowgol object files and outputs a Z80 assembler file (optimized) |
+| `CPP.COM`      | HiTech C pre-processor, modified to accept // style comments |
+| `DYNMSORT.COW` | Sort algorithm sample program source |
+| `DYNMSORT.SUB` | SUBMIT file to build DYNMSORT sample application |
+| `FACT.COW`     | Factorial computation sample program source |
+| `FILE.COH`     | Include file providing CP/M file processing support |
+| `FILEIO.COH`   | Include file providing CP/M file processing support |
+| `HEXDUMP.COW`  | Hex file dump sample  source |
+| `HEXDUMP.SUB`  | SUBMIT file to build HEXDUMP sample program |
+| `LIBBASIC.COH` | Include file providing ??? |
+| `LIBBIOS.COH`  | Include file providing ??? |
+| `LIBCONIO.COH` | Include file providing console I/O |
+| `LIBFP.COH`    | Include file providing floating point support |
+| `LIBR.COM`     | HiTech object file librarian |
+| `LIBSTR.COH`   | Include file providing string functions |
+| `LINK.COM`     | HiTech linker which builds the final executable from object and library files |
+| `MALLOC.COH`   | Include file providing dynamic memory management functions |
+| `MERGES.C`     | Merge sort sample function C language source |
+| `MISC.COH`     | Include file providing miscellaneous functions |
+| `MISC.COO`     | Miscellaneous functions object file |
+| `MISC.COW`     | Miscellaneous functions source file |
+| `OPTIM.COM`    | HiTech C compiler optimizer |
+| `P1.COM`       | HiTech C compiler first pass |
+| `RAND.AS`      | Pseudo-random number generator source in assembly language |
+| `RANFILE.COH`  | Include file providing random file access functions |
+| `RANFILE.COO`  | Random file access functions object file |
+| `RANFILE.COW`  | Random file access functions source file |
+| `README.TXT`   | Cowgol disk image release notes |
+| `SEQFILE.COH`  | Include file providing sequential file access functions |
+| `SEQFILE.COO`  | Sequential file access functions object file |
+| `SEQFILE.COW`  | Sequential file access functions source file |
+| `STDCOW.COH`   | Include file providing standard library functions |
+| `STRING.COH`   | Include file providing string functions |
+| `STRING.COO`   | String functions object file |
+| `STRING.COW`   | String functions source file |
+| `STRINGS.COH`  | Include file implementing string functions |
+| `TESTAS.COW`   | Assembly language interface sample program source |
+| `TESTAS.SUB`   | SUBMIT file to build TESTAS sample program |
+| `Z80AS.COM`    | Z80 assembler which assembles the output of COWFIX and other Z80 source files (see <https://github.com/Laci1953/Z80AS>) |
 
 ## Microsoft Fortran 80 (Fortran)
 
@@ -1111,12 +1156,12 @@ Zork 1 through 3, Planetfall and Hitchhiker's Guide to the Galaxy.
 Nemesis and Dungeon Master is a Rogue-like game released in 1981. It is playable
 on a text terminal using ASCII graphics to represent the dungeon. Only a few
 thousand copies of the game were ever made, making it very rare. See
-[http://crpgaddict.blogspot.com/2019/03/game-322-nemesis-1981.html]
+<http://crpgaddict.blogspot.com/2019/03/game-322-nemesis-1981.html>
 
 Colossal Cave Adventure is a CP/M port of the 1976 classic game originally
 written by Will Crowther for the PDP-10 mainframe. See
-[https://en.wikipedia.org/wiki/Colossal_Cave_Adventure] and
-[https://if50.substack.com/p/1976-adventure]
+<https://en.wikipedia.org/wiki/Colossal_Cave_Adventure> and
+<https://if50.substack.com/p/1976-adventure>
 
 The following files are found in
 
@@ -1133,31 +1178,92 @@ NOTE : The above is incomplete
 | Floppy Disk Image: **fd_hitechc.img**
 | Hard Disk Image: **hd_hitechc.img**
 
-The HI-TECH C Compiler  is  a  set  of  software  which
+The HI-TECH C Compiler is a set of software which
 translates  programs written in the C language to executable
 machine code programs. Versions are available which  compile
 programs  for  operation under the host operating system, or
 which produce programs for  execution  in  embedded  systems
 without an operating system.
 
-This is the Mar 21, 2023 update 17 released by Tony Nicholson who currently
-maintains HI-TECH C at [https://github.com/agn453/HI-TECH-Z80-C]
+This is the Jun 2, 2025 update 19 released by Tony Nicholson who
+currently maintains HI-TECH C at
+<https://github.com/agn453/HI-TECH-Z80-C>.
 
 The manual is available in the Doc/Language directory,
 HI-TECH Z80 C Compiler Manual.txt
 
 A good blog post about the HI-TECH C Compiler is available at
-[https://techtinkering.com/2008/10/22/installing-the-hi-tech-z80-c-compiler-for-cpm]
+<https://techtinkering.com/2008/10/22/installing-the-hi-tech-z80-c-compiler-for-cpm>.
+
+User area 1 contains another complete copy of the HI-TECH C Compiler.
+It is identical to the copy in user area 0 except for the following files
+which were enhanced by Ladislau Szilagyi from his GitHub Repository at
+<https://github.com/Laci1953/HiTech-C-compiler-enhanced>.  The files
+take advantage of additional banked memory using the RomWBW HBIOS API.
+As such, they require RomWBW to operate.  They should be compatible with
+all CP/M and compatible operations systems provided in RomWBW.
+
+The enhanced files are:
+
+- `CGEN.COM`
+- `CPP.COM`
+- `OPTIM.COM`
+- `P1.COM`
+- `ZAS.COM` (replaced with Z80AS)
+
+A thread discussing this enhanced version of HI-TECH C is found at
+<https://groups.google.com/g/rc2014-z80/c/sBCCIpOnnGg>.
 
 The following files are found in
 
 *  /Source/Images/d_hitechc
 
-| **File** | **Description** |
-|----------|-----------------|
-| --       |       --        |
-
-NOTE : The above is incomplete
+| **File**       | **Description**                            |
+|----------------|--------------------------------------------|
+| `$EXEC.COM`    | Compiler execution manager |
+| `ASSERT.H`     | Language include file |
+| `C.COM`        | Compiler invocation application (updated) |
+| `C309.COM`     | Compiler invocation application (original) |
+| `CGEN.COM`     | The code generator - produces assembler code |
+| `CONIO.H`      | Language include file (see manual) |
+| `CPM.H`        | Language include file (see manual) |
+| `CPP.COM`      | Pre-processor - handles macros and conditional compilation |
+| `CREF.COM`     | Produces cross-reference listings of C or assembler programs |
+| `CRTCPM.OBJ`   | Startup Object File (standard) |
+| `CTYPE.H`      | Language include file (see manual) |
+| `DEBUG.COM`    | C Debugger (Z80) |
+| `DRTCPM.OBJ`   | Startup Object File (???) |
+| `EXEC.H`       | Language include file (see manual) |
+| `FLOAT.H`      | Language include file (see manual) |
+| `HITECH.H`     | Language include file (see manual) |
+| `LIBC.LIB`     | Standard C Runtime Library |
+| `LIBF.LIB`     | Floating Point Library |
+| `LIBOVR.LIB`   | Overlay Library |
+| `LIBR.COM`     | Creates and maintains libraries of object modules |
+| `LIMITS.H`     | Language include file (see manual) |
+| `LINQ.COM`     | Link editor - links object files with libraries |
+| `MATH.H`       | Language include file (see manual) |
+| `NRTCPM.OBJ`   | Startup Object File (minimal getargs) |
+| `OBJTOHEX.COM` | Converts the output of LINK into the appropriate executable file format (e.g., .EXE or .PRG or .HEX) |
+| `OPTIM.COM`    | Code improver - may optionally be omitted, reducing compilation  time at a cost of larger, slower code produced |
+| `OPTIONS`      | Compiler usage help file |
+| `OVERLAY.H`    | Language include file |
+| `P1.COM`       | The syntax and  semantic analysis pass - writes intermediate code for the code generator to read |
+| `RRTCPM.OBJ`   | Startup Object File (self relocating) |
+| `SETJMP.H`     | Language include file (see manual) |
+| `SIGNAL.H`     | Language include file (see manual) |
+| `STAT.H`       | Language include file (see manual) |
+| `STDARG.H`     | Language include file (see manual) |
+| `STDDEF.H`     | Language include file (see manual) |
+| `STDINT.H`     | Language include file (see manual) |
+| `STDIO.H`      | Language include file (see manual) |
+| `STDLIB.H`     | Language include file (see manual) |
+| `STRING.H`     | Language include file (see manual) |
+| `SYMTOAS.COM`  | Convert symbol file to assembler |
+| `SYS.H`        | Language include file (see manual) |
+| `TIME.H`       | Language include file (see manual) |
+| `UNIXIO.H`     | Language include file (see manual) |
+| `ZAS.COM`      | The assembler - in fact a general purpose macro  assembler |
 
 ## MSX ROMS
 
@@ -1167,7 +1273,7 @@ NOTE : The above is incomplete
 The collection of MSX ROMs (2 disks) as provided by Les Bird.  
 These ROMs are "run" by using the
 appropriate variant of Les' MSX8 ROM loader.  You can download the
-loader binaries from [https://github.com/lesbird/MSX8].  You will need
+loader binaries from <https://github.com/lesbird/MSX8>.  You will need
 appropriate hardware to run the loader.
 
 Please review the file ROMLIST.TXT for information on the current
@@ -1203,23 +1309,23 @@ The manual can be found in the Docs/Language directory,
 Turbo_Pascal_Version_3.0_Reference_Manual_1986.pdf
 
 A good overview of using Turbo Pascal in CP/M is available at
-[https://techtinkering.com/2013/03/05/turbo-pascal-a-great-choice-for-programming-under-cpm]
+<https://techtinkering.com/2013/03/05/turbo-pascal-a-great-choice-for-programming-under-cpm>
 
 The following files are found in
 
 *  /Source/Images/d_tpascal
 
-| **File**     | **Description**                |
-|--------------|--------------------------------|
-| ART.TXT      | Part of the Example program    |
-| SA.PAS       | Example Program                |
-| TINST.COM    | Installation and Configuration |
-| TINST.DTA    | Part of TINST                  |
-| TINST.MSG    | Part of TINST                  |
-| TURBO.COM    | The main Turbo Pascal program  |
-| TURBO.MSG    | Part of TURBO tascal           |
-| TURBO.OVR    | Part of TURBO tascal           |
-| TURBOMSG.OVR | Part of TURBO tascal           |
+| **File**       | **Description**                |
+|----------------|--------------------------------|
+| `ART.TXT`      | Part of the Example program    |
+| `SA.PAS`       | Example Program                |
+| `TINST.COM`    | Installation and Configuration |
+| `TINST.DTA`    | Part of TINST                  |
+| `TINST.MSG`    | Part of TINST                  |
+| `TURBO.COM`    | The main Turbo Pascal program  |
+| `TURBO.MSG`    | Part of TURBO Pascal           |
+| `TURBO.OVR`    | Part of TURBO Pascal           |
+| `TURBOMSG.OVR` | Part of TURBO Pascal           |
 
 ## WordStar 4
 
@@ -1306,7 +1412,9 @@ Also contained on this image in User Area 1 are.
 | Floppy Disk Image: **fd_z80asm.img**
 | Hard Disk Image: **hd_z80asm.img**
 
-Z80ASM is a relocating macro assembler for CP/M. It takes assembly language
+This disk contains 6 major components
+
+* Z80ASM is a relocating macro assembler for CP/M. It takes assembly language
 source statements from a disk file, converts them into their binary equivalent,
 and stores the output in either a core-image, Intel hex format, or relocatable
 object file. The mnemonics recognized are those of Zilog/Mostek. The optional
@@ -1314,19 +1422,103 @@ listing output may be sent to a disk file, the console and/or the printer, in
 any combination. Output files may also be generated containing cross-reference
 information on each symbol used.
 
-The manual is available in the Doc/Language directory,
-z80asm (SLR Systems).pdf
+* Z80ASMP (Z80ASM Plus). Referred to as the "Virtual Memory" version which 
+uses disk for working storage, thus not constrained by RAM.
+
+* SLR180 is a powerful relocating macro assembler for Z80
+compatible CP/M systems. It takes assembly language source
+statements from a disk file, converts them into their binary
+equivalent, and stores the output in either a core-image, Intel
+hex format, or relocatable object file. The mnemonics recognized
+are those of Zilog (Z180)/Hitachi. The optional listing output may be
+sent to a disk file, the console and/or the printer, in any
+combination. Output files may also be generated containing
+cross-reference information on each symbol used.
+
+* SLRMAC relocating macro assembler for Intel 8080 mnemonics
+
+* SLRNK is a powerful linking loader for Z80-based CP/M systems.
+It takes relocatable binary information in either Microsoft or
+SLR Systems format from a disk file, resolves external and entry
+point references, and stores the output in memory for execution
+or outputs it to a disk file.
+
+* SLRNKP (SLRNK Plus). Referred to as the "Virtual Memory" version which
+uses disk for working storage, thus not constrained by RAM.
+
+* Z80DIS is an entirely new disassembler for Z80 based CP/M sys-
+tems. Z80DIS is written in TURBO PASCAL. Z80DIS generates Z80
+mnemonics and prepares an assembly language file with many
+special features for ease of understanding the intent of the
+code. The program and documantation are Copyright 1985, by
+Kenneth Gielow, Palo Alto, CA. All rights are reserved.
+
+The manual(s) are available in the Doc/Language directory,
+
+* z80asm (SLR Systems).pdf
+* SL180 (SLR Systems 1985).pdf
+* SLRNK (SLR Systems 1984).pdf
+* Z80DIS User Manual (1985).pdf
 
 A run through of using the assembler is available at
-[https://8bitlabs.ca/Posts/2023/05/20/learning-z80-asm]
+<https://8bitlabs.ca/Posts/2023/05/20/learning-z80-asm>
+
+And another shorter, but shows linker usage guide
+<https://pollmyfinger.wordpress.com/2022/01/10/modular-retro-z80-assembly-language-programming-using-slr-systems-z80asm-and-srlnk/>
 
 The following files are found in
 
 *  /Source/Images/d_z80asm
 
-| **File**   | **Description**                     |
-|------------|-------------------------------------|
-| DUMP.*     | Sample Program                      |
-| TEST.*     | Sample Program                      |
-| Z80ASM.COM | Relocating macro assembler for CP/M |
-| Z80ASM.DOC | Documentation for Z80.COM           |
+User Area 0 - Assembler
+
+| **File**      | **Description**                             |
+|---------------|---------------------------------------------|
+| `180FIG.COM`  | Configuration utility for SLR180.COM        |
+| `8080.MAC`    | ?                                           |
+| `CONFIG.COM`  | Configuration utility for Z80ASM.COM        |
+| `CONFIGP.COM` | Configuration utility for Z80ASMP.COM       |
+| `DUMP.*`      | Sample Program                              |
+| `MAKESYM.COM` | Symbol File .SYM file generation            |
+| `MAKESYM.DOC` | Documentation for MAKESYM.COM               |
+| `SLR180.COM`  | HD64180 (Z180) Relocating Macro Assembler   |
+| `SLR180.DOC`  | Release Notes for SLR180.COM                |
+| `SLRMAC.COM`  | 8080 Relocating Macro Assembler             |
+| `SYNTAX.HLP`  | Documentation basic usage for all SLR Tools |
+| `SYNTAX.TXT`  | Documentation basic usage for all SLR Tools |
+| `TEST.\*`     | Sample Program                              |
+| `Z80ASM.COM`  | Z80 Relocating Macro Assembler              |
+| `Z80ASMP.COM` | Z80 Relocating Macro Assembler (PLUS)       |
+| `Z80ASM.DOC`  | Release Notes for Z80ASM.COM                |
+
+User Area 1 - Linker and Library Management
+
+| **File**       | **Description**                               |
+|----------------|-----------------------------------------------|
+| `LNKFIG.COM`   | Configuration utility for SLRNK.COM           |
+| `NZLNKFIX.ZEX` | ?                                             |
+| `SLRIB.COM`    | SuperLibrarian, library manager               |
+| `SLRNK.COM`    | SuperLinker, the main linker tool             |
+| `SLRNKP.COM`   | SuperLinker (PLUS)                            |
+| `SLRNK.DOC`    | Release Notes for SLRNK.COM                   |
+| `SLRNKFIX.ZEX` | ?                                             |
+| `SYNTAX.HLP`   | Documentation basic usage for all SLR Tools   |
+| `SYNTAX.TXT`   | Documentation basic usage for all SLR Tools   |
+| `SYSSLR.REL`   | SYSLIB (older) Library compatible with SLR    |
+| `VSLR.REL`     | VLIB (older) Library compatible with SLR      |
+| `Z3SLR.REL`    | Z3LIB (older) Library compatible with SLR     |
+
+User Area 2 - Disassembler
+
+| **File**       | **Description**                  |
+|----------------|----------------------------------|
+| `README.22`    | Documentation for Z80DIS         |
+| `Z80DIS.000`   | Overlay File for Z80DIS.COM      |
+| `Z80DIS.001`   | Overlay File for Z80DIS.COM      |
+| `Z80DIS.002`   | Overlay File for Z80DIS.COM      |
+| `Z80DIS.COM`   | Z80DIS Disassembler main program |
+| `Z80DIS22.DOC` | Main Documentation for Z80DIS    |
+| `ZDINSTAL.COM` | Instal and Config for Z80DIS.COM |
+| `ZDINSTAL.DTA` | Overlay file for ZDINSTAL.COM    |
+| `ZDINSTAL.MSG` | Overlay file for ZDINSTAL.COM    |
+

Source/Doc/Errata.md

@@ -1,19 +0,0 @@
-$define{doc_title}{Errata}$
-$include{"Book.h"}$
-
-# Errata
-
-The following errata apply to $doc_product$ $doc_ver$:
-
-* The use of high density floppy disks requires a CPU speed of 8 MHz or 
-  greater.
-
-* The PropIO support is based on RomWBW specific firmware. Be sure to 
-  program/update your PropIO firmware with the corresponding firmware 
-  image provided in the Binary directory of the RomWBW distribution.
-
-* Reading bytes from the video memory of the VDU board (not Color 
-  VDU) appears to be problematic. This is only an issue when the driver 
-  needs to scroll a portion of the screen which is done by applications 
-  such as WordStar or ZDE. You are likely to see screen corruption in 
-  this case.

Source/Doc/Introduction.md

@@ -1,11 +1,12 @@
-$define{doc_title}{ReadMe}$
-$include{"Basic.h"}$
+$define{doc_title}{Introduction}$
+$include{"Book.h"}$
 
 # Overview
 
-RomWBW software provides a complete, commercial quality 
-implementation of CP/M (and workalike) operating systems and 
+RomWBW software provides a complete, commercial quality
+implementation of CP/M (and workalike) operating systems and
 applications for modern Z80/180/280 retro-computing hardware systems.
+
 A wide variety of platforms are supported including those
 produced by these developer communities:
 
@@ -19,45 +20,43 @@ produced by these developer communities:
 * [Small Computer Central](https://smallcomputercentral.com/)
   (<https://smallcomputercentral.com/>)
 
-A complete list of the currently supported platforms is found in the
-[Installation] section.
+A complete list of the currently supported platforms is found in
+$doc_hardware$ .
 
-General features include:
+`\clearpage`{=latex}
+
+# Description
+
+## Primary Features
+
+By design, RomWBW isolates all of the hardware specific functions in
+the ROM chip itself.  The ROM provides a hardware abstraction layer
+such that all of the operating systems and applications on a disk
+will run on any RomWBW-based system.  To put it simply, you can take
+a disk (or CF/SD/USB Card) and move it between systems transparently.
+
+Supported hardware features of RomWBW include:
 
 * Z80 Family CPUs including Z80, Z180, and Z280
 * Banked memory services for several banking designs
 * Disk drivers for RAM, ROM, Floppy, IDE ATA/ATAPI, CF, SD, USB, Zip, Iomega
 * Serial drivers including UART (16550-like), ASCI, ACIA, SIO
-* Video drivers including TMS9918, SY6545, MOS8563, HD6445
+* Video drivers including TMS9918, SY6545, MOS8563, HD6445, Xosera
 * Keyboard (PS/2) drivers via VT8242 or PPI interfaces
 * Real time clock drivers including DS1302, BQ4845
-* OSes: CP/M 2.2, ZSDOS, CP/M 3, NZ-COM, ZPM3, QPM, p-System, and FreeRTOS
+* Support for CP/NET networking using Wiznet, MT011 or Serial
 * Built-in VT-100 terminal emulation support
 
-RomWBW is distributed as both source code and pre-built ROM and disk
-images. Some of the provided software can be launched directly from the
-ROM firmware itself:
-
-* System Monitor
-* Operating Systems (CP/M 2.2, ZSDOS)
-* ROM BASIC (Nascom BASIC and Tasty BASIC)
-* ROM Forth
-
-A dynamic disk drive letter assignment mechanism allows mapping 
-operating system drive letters to any available disk media. 
-Additionally, mass storage devices (IDE Disk, CF Card, SD Card, etc.) 
-support the use of multiple slices (up to 256 per device). Each slice 
-contains a complete CP/M filesystem and can be mapped independently to 
+A dynamic disk drive letter assignment mechanism allows mapping
+operating system drive letters to any available disk media.
+Additionally, mass storage devices (IDE Disk, CF Card, SD Card, etc.)
+support the use of multiple slices (up to 256 per device). Each slice
+contains a complete CP/M filesystem and can be mapped independently to
 any drive letter. This overcomes the inherent size limitations in legacy
-OSes and allows up to 2GB of accessible storage on a single device.
+OSes and allows up to 2GB of addressable storage on a single device, 
+with up to 128MB accessible at any one time.
 
-The pre-built ROM firmware images are generally suitable for most
-users. However, it is also very easy to modify and build custom ROM
-images that fully tailor the firmware to your specific preferences.
-All tools required to build custom ROM firmware under Windows are
-included -- no need to install assemblers, etc.  The firmware can also
-be built using Linux or MacOS after confirming a few standard tools
-have been installed.
+## Included Software
 
 Multiple disk images are provided in the distribution. Most disk
 images contain a complete, bootable, ready-to-run implementation of a
@@ -66,57 +65,152 @@ slices, each with a full operating system implementation. If you use
 this disk image, you can easily pick whichever operating system you
 want to boot without changing media.
 
-By design, RomWBW isolates all of the hardware specific functions in
-the ROM chip itself.  The ROM provides a hardware abstraction layer
-such that all of the operating systems and applications on a disk
-will run on any RomWBW-based system.  To put it simply, you can take
-a disk (or CF/SD/USB Card) and move it between systems transparently.
+Some of the included software:
 
-A tool is provided that allows you to access a FAT-12/16/32 filesystem. 
-The FAT filesystem may be coresident on the same disk media as RomWBW 
+* Operating Systems (CP/M 2.2, ZSDOS, NZ-COM, CP/M 3, ZPM3, Z3PLUS, QPM )
+* Support for other operating systems, p-System, FreeRTOS, and FUZIX.
+* Programming Tools (Z80ASM, Turbo Pascal, Forth, Cowgol)
+* C Compiler's including Aztec-C, and HI-TECH C
+* Microsoft Basic Compiler, and Microsoft Fortran
+* Some games such as Colossal Cave, Zork, etc
+* Wordstar Word processing software
+
+Some of the provided software can be launched directly from the
+ROM firmware itself:
+
+* System Monitor
+* Operating Systems (CP/M 2.2, ZSDOS)
+* ROM BASIC (Nascom BASIC and Tasty BASIC)
+* ROM Forth
+
+A tool is provided that allows you to access a FAT-12/16/32 filesystem.
+The FAT filesystem may be coresident on the same disk media as RomWBW
 slices or on stand-alone media.  This makes exchanging files with modern
 OSes such as Windows, MacOS, and Linux very easy.
 
-# Acquiring RomWBW
+`\clearpage`{=latex}
+
+## ROM Distribution 
 
 The [RomWBW Repository](https://github.com/wwarthen/RomWBW)
-(<https://github.com/wwarthen/RomWBW>) on GitHub is the official 
-distribution location for all project source and documentation.  The 
-fully-built distribution releases are available on the
+(<https://github.com/wwarthen/RomWBW>) on GitHub is the official
+distribution location for all project source and documentation.
+
+RomWBW is distributed as both source code and pre-built ROM and disk
+images.
+
+The pre-built ROM images distributed with RomWBW are based on
+the default system configurations as determined by the hardware
+provider/designer. The pre-built ROM firmware images are generally
+suitable for most users.
+
+The fully-built distribution releases are available on the
 [RomWBW Releases Page](https://github.com/wwarthen/RomWBW/releases)
-(<https://github.com/wwarthen/RomWBW/releases>) of the repository.  On 
-this page, you will normally see a Development Snapshot as well as 
+(<https://github.com/wwarthen/RomWBW/releases>) of the repository.
+
+On this page, you will normally see a Development Snapshot as well as
 recent stable releases. Unless you have a specific reason, I suggest you
- stick to the most recent stable release. Expand the "Assets" drop-down 
-for the release you want to download, then select the asset named 
-RomWBW-vX.X.X-Package.zip. The Package asset includes all pre-built ROM 
-and Disk images as well as full source code. The other assets contain 
+stick to the most recent stable release.
+
+The asset named RomWBW-vX.X.X-Package.zip includes all pre-built ROM
+and Disk images as well as full source code. The other assets contain
 only source code and do not have the pre-built ROM or disk images.
 
-All source code and distributions are maintained on GitHub. Code
-contributions are very welcome.
+#### Distribution Directory Layout
 
-# Installation & Operation
+The RomWBW distribution is a compressed zip archive file organized in
+a set of directories. Each of these directories has its own
+ReadMe.txt file describing the contents in detail. In summary, these
+directories are:
+
+| **Directory**            | **Description**                                                                                                                                                    |
+|--------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| **Binary**               | The final output files of the build process are placed here. Most importantly, the ROM images with the file names ending in ".rom" and disk images ending in .img. |
+| **Doc**                  | Contains various detailed documentation, both RomWBW specifically as well as the operating systems and applications.                                               |
+| **Source**               | Contains the source code files used to build the software and ROM images.                                                                                          |
+| **Tools**                | Contains the programs that are used by the build process or that may be useful in setting up your system.                                                          |
+
+`\clearpage`{=latex}
+
+#### Building from Source
+
+It is also very easy to modify and build custom ROM
+images that fully tailor the firmware to your specific preferences.
+All tools required to build custom ROM firmware under Windows are
+included -- no need to install assemblers, etc.  The firmware can also
+be built using Linux or MacOS after confirming a few standard tools
+have been installed.
+
+## Installation & Operation
 
 In general, installation of RomWBW on your platform is very simple. You
 just need to program your ROM with the correct ROM image from the RomWBW
-distribution.  Subsequently, you can write disk images on your disk
+distribution. Subsequently, you can write disk images on your disk
 drives (IDE disk, CF Card, SD Card, etc.) which then provides even more
 functionality.
 
-Complete instructions for installation and operation of RomWBW are
-found in the $doc_user$.
+Complete instructions for installation and operation of RomWBW are found
+in the $doc_user$. It is also a good idea to review the [Release
+Notes](https://github.com/wwarthen/RomWBW/blob/master/RELEASE_NOTES.md)
+for helpful release-specific information.
 
 ## Documentation
 
-Documentation for $doc_product$ includes:
+There are several documents that form the core of the RomWBW documentation:
 
-* $doc_user$
-* $doc_sys$
-* $doc_apps$
-* $doc_errata$
+* $doc_user$ is the main user guide for RomWBW, it covers the major topics
+  of how to install, manage and use RomWBW, and includes additional guidance
+  to the use of some of the operating systems supported by RomWBW
 
-# Acknowledgments
+* $doc_hardware$ contains a description of all the hardware platforms,
+  and devices supported by RomWBW.
+
+* $doc_apps$ is a reference for the ROM-hosted and OS-hosted applications
+  created or customized to enhance the operation of RomWBW.
+
+* $doc_catalog$ is a reference for the contents of the disk images
+  provided with RomWBW, with a description of many of the files on each image
+
+* $doc_sys$ discusses much of the internal design and construction
+  of RomWBW.  It includes a reference for the RomWBW HBIOS API
+  functions.
+
+Each of the operating systems and ROM applications included with RomWBW
+are sophisticated tools in their own right. It is not reasonable to
+fully document their usage. However, you will find complete manuals
+in PDF format in the Doc directory of the distribution.  The intention
+of this documentation is to describe the operation of RomWBW and the ways in
+which it enhances the operation of the included applications and
+operating systems.
+
+Since RomWBW is purely a software product for many different platforms,
+the documentation does **not** cover hardware construction,
+configuration, or troubleshooting -- please see your hardware provider
+for this information.
+
+# Support 
+
+## Getting Assistance
+
+The best way to get assistance with RomWBW or any aspect of the
+RetroBrew Computers projects is via one of the community forums:
+
+* [RetroBrew Computers Forum](https://www.retrobrewcomputers.org/forum/)
+* [RC2014 Google Group](https://groups.google.com/forum/#!forum/rc2014-z80)
+* [retro-comp Google Group](https://groups.google.com/forum/#!forum/retro-comp)
+
+Submission of issues and bugs are welcome at the
+[RomWBW GitHub Repository](https://github.com/wwarthen/RomWBW).
+
+Also feel free to email $doc_author$ at [$doc_authmail$](mailto:$doc_authmail$).
+I am happy to provide support adapting RomWBW to new or modified systems
+
+# Contributions
+
+All source code and distributions are maintained on GitHub.
+Contributions of all kinds to RomWBW are very welcome.
+
+## Acknowledgments
 
 I want to acknowledge that a great deal of the code and inspiration
 for RomWBW has been provided by or derived from the work of others
@@ -188,11 +282,15 @@ please let me know if I missed you!
 
 * Martin R has provided substantial help reviewing and improving the
   User Guide and Applications documents.
-  
-* Mark Pruden has also contributed a great deal of content to the
-  Disk Catalog, User Guide as well as contributing the disk image
-  for the Z3PLUS operating system, the COPYSL utility, and also
-  implemented feature for RomWBW configuration by NVRAM.
+
+* Mark Pruden has made a wide variety of contributions including:
+  - significant content in the Disk Catalog and User Guide
+  - creation of the Introduction and Hardware documents
+  - Z3PLUS operating system disk image
+  - COPYSL utility
+  - SLABEL utility
+  - a feature for RomWBW configuration by NVRAM
+  - the /B bulk mode of disk assignment to the ASSIGN utility
 
 * Jacques Pelletier has contributed the DS1501 RTC driver code.
 
@@ -226,10 +324,53 @@ please let me know if I missed you!
 
 * Les Bird has contributed support for the NABU w/ Option Board
 
-Contributions of all kinds to RomWBW are very welcome.
+* Rob Gowin created an online documentation site via MkDocs, and
+  contributed a driver for the Xosera FPGA-based video
+  controller.
+
+`\clearpage`{=latex}
+
+## Related Projects
+
+Outside of the hardware platforms adapted to RomWBW, there are a variety
+of projects that either target RomWBW specifically or provide
+a RomWBW-specific variation.  These efforts are greatly appreciated
+and are listed below.  Please contact the author if there are any other
+such projects that are not listed.
+
+#### Z88DK
+
+Z88DK is a software powerful development kit for Z80 computers
+supporting both C and assembly language.  This kit now provides
+specific library support for RomWBW HBIOS.  The Z88DK project is
+hosted at <https://github.com/z88dk/z88dk>.
+
+#### Paleo Editor
+
+Steve Garcia has created a Windows-hosted IDE that is tailored to
+development of RomWBW.  The project can be found at
+<https://github.com/alloidian/PaleoEditor>.
+
+#### Z80 fig-FORTH
+
+Dimitri Theulings' implementation of fig-FORTH for the Z80 has a
+RomWBW-specific variant. The project is hosted at
+<https://github.com/dimitrit/figforth>.
+
+#### Assembly Language Programming for the RC2014 Zed
+
+Bruce Hall has written a very nice document that describes how to
+develop assembly language applications on RomWBW.  It begins with the
+setup and configuration of a new RC2014 Zed system running RomWBW.
+It describes not only generic CP/M application development, but also
+RomWBW HBIOS programming and bare metal programming.  The latest copy
+of this document is hosted at
+[http://w8bh.net/Assembly for RC2014Z.pdf](http://w8bh.net/Assembly%20for%20RC2014Z.pdf).
 
 # Licensing
 
+## License Terms
+
 RomWBW 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
@@ -271,17 +412,3 @@ source code control system to ensure their contributions are clearly
 documented.
 
 All contributions to RomWBW are subject to this license.
-
-# Getting Assistance
-
-The best way to get assistance with RomWBW or any aspect of the
-RetroBrew Computers projects is via one of the community forums:
-
-* [RetroBrew Computers Forum](https://www.retrobrewcomputers.org/forum/)
-* [RC2014 Google Group](https://groups.google.com/forum/#!forum/rc2014-z80)
-* [retro-comp Google Group](https://groups.google.com/forum/#!forum/retro-comp)
-
-Submission of issues and bugs are welcome at the
-[RomWBW GitHub Repository](https://github.com/wwarthen/RomWBW).
-
-Also feel free to email $doc_author$ at [$doc_authmail$](mailto:$doc_authmail$).