MSX Combo Disk, Issue #645

Adding MSX Combo Disk as provided by @b3rendsh.

Co-Authored-By: H.J.Berends <112617808+b3rendsh@users.noreply.github.com>

Source/Images/d_msx/ReadMe.txt

@@ -0,0 +1,76 @@
+===== MSX System Disk for RomWBW =====
+
+This disk is one of several ready-to-run disks provided with RomWBW.
+It contains software to launch the MSX system or a MSX (game) ROM.
+
+The source code is maintained in following repository:
+https://github.com/b3rendsh/msxbase
+
+== Requirements ==
+
+HBDOS can be used on a Z80 or Z180 RomWBW computer with at least 192KB RAM and 
+support for a system timer. MSX BASIC and the MSX ROM loader require a TMS9918A
+compatible video card, system timer and 128KB RAM.
+
+hbmsx.com requires a keyboard and VDP that is compliant with the MSX standard.
+rcmsx.com uses the console keyboard and text output is displayed on both the
+console and video card.
+msxrom.com uses the console keyboard and requires a MSX compliant VDP and PSG.
+
+To use HBDOS the first FAT partition on the first large storage media must
+contain the MSX command interpreter i.e. the COMMAND.COM file.
+
+Different hardware and software configurations can be supported by using
+alternative build options, see source repository.
+
+== Usage ==
+
+Start hbmsx.com or rcmsx.com to load the MSX system HBDOS / Disk BASIC.
+Start msxrom.com to load a MSX (game) ROM image e.g. "msxrom arkanoid.rom".
+
+== HBDOS == 
+
+HBDOS is compatible with all functions of MSX-DOS 1 and includes enhancements
+to support large disks with standard FAT12 or FAT16 partitions.
+
+It is a CP/M 2.2 work-alike DOS that uses the FAT filesystem. Many text 
+applications that work on MSX-DOS 1 or CP/M 2.2 will run without modification. 
+Direct disk access, FAT32, i/o byte, user areas and subdirectories are not 
+supported.
+
+At the DOS command prompt enter "basic" to start MSX BASIC.
+
+== BASIC ==
+
+All functions of MSX BASIC are available, if HBDOS is loaded then the Disk 
+BASIC extension is also available.
+
+Use the IPL command to return to RomWBW i.e. do a cold reboot.
+
+In Disk BASIC use "call system" to return to the DOS command prompt.
+
+== ROM CART ==
+
+The MSX ROM loader supports MSX ROM cartridge images of maximum 32KB.
+
+Not all MSX ROM games will work and some games may require an additional ROM 
+patch or additional hardware. When a MSX ROM is running you can reboot RomWBW
+by pressing the CTRL+STOP key (default mapped to CTRL+V).
+
+== Console ==
+
+The RomWBW (VT100) console can be used for keyboard input and screen output, 
+with some limitations:
+
+Cursor and function keys may not work, use control key combinations or a MSX 
+compatible keyboard. 
+
+To paste text into BASIC set the terminal send character delay to at least 40ms.
+
+The MSX BIOS uses VT52 escape sequences, on a VT100 console sometimes an extra 
+character is displayed.
+
+The MSX 1 BIOS text mode is set to 40 columns.
+
+
+-- HJB 01/06/2026

Source/Images/d_msx/u0/PROFILE.SUB

@@ -0,0 +1,2 @@
+RCMSX
+

Source/Images/hd_msx.txt

@@ -0,0 +1,15 @@
+@Label="MSX System"
+@SysImage="../ZSDOS/zsys_wbw.sys"
+#
+# Add the ReadMe document
+#
+d_msx/Readme.txt 0:
+#
+# Add CP/M 2.2 commands
+#
+d_cpm22/u0/submit.com 0:
+#
+# Add RomWBW utilities
+#
+../../Binary/Apps/fat.com 0:
+../../Binary/Apps/reboot.com 0:

Source/MSX/BuildMsxDsk.cmd

@@ -0,0 +1,13 @@
+:: This script will build an aggregate MSX disk image
+
+@echo off
+setlocal
+
+SETLOCAL EnableDelayedExpansion
+
+set MTOOLS_SKIP_CHECK=1
+set TOOLS=../../Tools
+set PATH=%TOOLS%\mtools;%PATH%
+
+PowerShell -ExecutionPolicy Unrestricted .\BuildMsxDsk.ps1 || exit /b
+

Source/MSX/BuildMsxDsk.ps1

@@ -0,0 +1,55 @@
+# This PowerShell script will build an aggregate hard disk image with three partitions:
+#   - RomWBW partition with 16 slices (128MB)
+#   - MSX-DOS FAT12 system partition (8MB)
+#   - FAT16 data partition (100MB)
+# The script must be invoked after all slice images are built.
+
+# If a PowerShell exception occurs, just stop the script immediately.
+$ErrorAction = 'Stop'
+
+$DskFile = "..\..\Binary\msx_combo.dsk"
+
+"Generating $DskFile..."
+
+$FileList = ""
+
+# Define the 16 slices
+$SliceList = 'cpm22','zsdos','nzcom','cpm3','zpm3','wp','games','msx'
+$SliceList += 'blank','blank','blank','blank','blank','blank','blank','blank'
+
+ForEach ($Slice in $SliceList)
+{
+  $File = "..\..\Binary\hd1k_" + $Slice + ".img"
+  
+  if (!(Test-Path $File))
+  {
+    "Slice input file """ + $File + """ not found!!!"
+    exit 1
+  }
+  
+  if ($FileList.Length -gt 0)
+  {
+    $FileList += "+"
+  }
+
+  $FileList += $File
+}
+
+# Expand MBR and FAT partition images
+
+Expand-Archive -Force -Path msximg.zip
+
+# Populate FAT system partition
+
+&"mtools" -c copy -i msximg\msx_sys.dsk -omv d_fat\*.* ::
+&"mtools" -c copy -i msximg\msx_sys.dsk -omv ..\..\Binary\MSX_std.rom ::MSX-STD.ROM
+&"mtools" -c copy -i msximg\msx_sys.dsk -omv ..\..\Binary\msx-ldr.com ::MSX-LDR.COM
+&"mtools" -c copy -i msximg\msx_sys.dsk -omv ..\..\Binary\Apps\reboot.com ::REBOOT.COM
+
+$FileList = "msximg\msx_mbr.dat +" + $FileList + "+ msximg\msx_sys.dsk + msximg\msx_data.dsk"
+
+$Cmd = "$env:ComSpec /c copy /b $FileList $DskFile"
+$Cmd
+Invoke-Expression $Cmd
+
+exit 0

Source/MSX/Clean.cmd

@@ -8,3 +8,5 @@ if exist *.hex del *.hex
 if exist *.rel del *.rel
 if exist *.sym del *.sym
 if exist *.com del *.com
+
+if exist msximg rd /s /q msximg

Source/MSX/ReadMe.md

@@ -1,10 +1,52 @@
-# RomWBW loader for MSX
+RomWBW Loader for MSX
+=====================
 
-The loader can be started from the MSX-DOS 1, MSX-DOS 2 or Nextor command prompt.
+The loader can be started from the MSX-DOS 1, MSX-DOS 2 or Nextor 
+command prompt.
 
-It will check the RAM mapper requirements based on the size of the rom image file.
+It will check the RAM mapper requirements based on the size of the rom 
+image file.
 
-The "MSX_std.rom" image must be copied to "MSX-STD.ROM" on the MSX disk media together with "MSX-LDR.COM".
+The "MSX_std.rom" image must be copied to "MSX-STD.ROM" on the MSX disk 
+media together with "MSX-LDR.COM".
 
+RomWBW MSX Combo Disk Creation
+==============================
 
+This folder contains Windows scripts to create a RomWBW MSX combo disk 
+image.
 
+Usage
+-----
+
+1. Copy the Source folder into the RomWBW folder.
+2. Download mtools for Windows: https://github.com/YawHuei/mtools_win32 
+3. Copy the mtools executables into the (new) RomWBW\Tools\mtools folder
+4. Run the RomWBW build script for your platform e.g. "build msx std"
+   or "build rcz80 std"
+5. In the Source\MSX folder run "BuildMsxDsk.cmd"
+
+If the scripts run successfully the Binary\msx_combo.dsk file is created.
+
+Disk image contents
+-------------------
+
+The disk image will contain three partitions:
+- RomWBW partition with 16 slices (128MB)
+- MSX-DOS FAT12 system partition (8MB)
+- FAT16 data partition (100MB)
+
+The RomWBW partition contains the standard RomWBW slices, the games 
+slice, the msx system slice and 8 blank slices.  The msx system slice 
+contains the CP/M loader program to start the MSX system from RomWBW.
+
+The FAT12 system partition contains the MSX-DOS system files and loader 
+to start RomWBW on a MSX system. If the MSX system is started from 
+RomWBW this will be the A-drive.
+
+The FAT16 data partition is a formatted empty partition.
+If the MSX system is started from RomWBW this will be the B-drive.
+
+Note
+----
+This is a work in progress and subject to change without notice.

Source/MSX/d_fat/README.TXT

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+===== FAT Disk for RomWBW =====
+
+FAT / MSX system files
+
+-- HJB 12/06/2025