Bump Version

Added loader for MSX

Doc/ChangeLog.txt

@@ -27,6 +27,10 @@ Version 3.6
 - R?M: Randy Merkel provided ZSDOS Programmer's Manual as translated by Wayne Hortensius
 - WBW: Updated Cowgol disk image with latest COWFIX.COM from Ladislau Szilagyi
 - WBW: Preliminary support for S100 Computers Z80 CPU
+- HJB: Added MSX platform
+- M?R: Update Timer app with "zero" option
+- HJB: Update PPIDE driver, add support for MSX BEER IDE interface
+- HJB: Added loader for MSX
 
 Version 3.5.1
 -------------

RELEASE_NOTES.md

@@ -8,10 +8,27 @@ release of RomWBW.
 - **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.
+  matched set.  After upgrading your ROM, you need to update your
+  boot disk media by doing one of the following:
+  
+  - Write a new disk image (typically hd1k_combo.img) onto your
+    disk media (will overwrite existing data/files).
+  - Update the boot tracks of the bootable OS images as described in
+    the RomWBW User Guid.
+
+## Version 3.6
+
+### Upgrade Notes
+
+- The FZ80 (S100 FPGA Z80) platform has been renamed to SZ80 (S100 Z80)
+  and has two configurations.  SZ80_std is for the generic S100
+  Z80 CPU.  SZ80_fpga is for the FPGA Z80 SBC.
+
+### New Features
+
+### New Hardware Support
+
+- Support for MSX systems.
 
 ## Version 3.5.1
 
@@ -94,7 +111,6 @@ This is a patch release of v3.5.
 - Enhancements to ASSIGN command to automatically assign drives
   (Mark Pruden).
 
-
 ### New Hardware Support
 
 - NABU w/ RomWBW Option Board.

ReadMe.md

@@ -7,7 +7,7 @@
 **RomWBW Introduction** \
 Version 3.6 \
 Wayne Warthen  ([wwarthen@gmail.com](mailto:wwarthen@gmail.com)) \
-22 Sep 2025
+29 Sep 2025
 
 # Overview
 
@@ -361,6 +361,8 @@ let me know if I missed you!
 - Randy Merkel provided the ZSDOS Programmer’s Manual as translated by
   Wayne Hortensius.
 
+- Henk Berends added support for the MSX platform.
+
 ## Related Projects
 
 Outside of the hardware platforms adapted to RomWBW, there are a variety

ReadMe.txt

@@ -1,6 +1,6 @@
 RomWBW Introduction
 Wayne Warthen (wwarthen@gmail.com)
-22 Sep 2025
+29 Sep 2025
 
 
 
@@ -368,6 +368,8 @@ let me know if I missed you!
 - Randy Merkel provided the ZSDOS Programmer’s Manual as translated by
   Wayne Hortensius.
 
+- Henk Berends added support for the MSX platform.
+
 
 Related Projects
 

Source/Apps/FAT/ReadMe.md

@@ -1,7 +1,7 @@
 # RomWBW HBIOS CP/M FAT Utility ("FAT.COM")
 
 Author: Wayne Warthen \
-Updated: 6-May-2024
+Updated: 27-Aug-2025
 
 This application allows copying files between CP/M filesystems and FAT 
 filesystems (DOS, Windows, Mac, Linux, etc.).  The application runs on 
@@ -142,10 +142,10 @@ creation.
 
 | Date        | Version | Notes                                                       |
 |------------:|-------- |-------------------------------------------------------------|
-| 2-May-2019  | v0.9    | (beta) initial release                                      |
-| 7-May-2019  | v0.9.1  | (beta) added REN and DEL                                    |
-| 8-May-2019  | v0.9.2  | (beta) handle file collisions w/ user prompt                |
-| 8-Oct-2019  | v0.9.3  | (beta) fixed incorrect filename buffer size (MAX_FN)        |
+|  2-May-2019 | v0.9    | (beta) initial release                                      |
+|  7-May-2019 | v0.9.1  | (beta) added REN and DEL                                    |
+|  8-May-2019 | v0.9.2  | (beta) handle file collisions w/ user prompt                |
+|  8-Oct-2019 | v0.9.3  | (beta) fixed incorrect filename buffer size (MAX_FN)        |
 | 10-Oct-2019 | v0.9.4  | (beta) upgraded to FatFs R0.13c                             |
 | 10-Oct-2019 | v0.9.5  | (beta) added MD (make directory)                            |
 | 10-Oct-2019 | v0.9.6  | (beta) added FORMAT                                         |
@@ -153,6 +153,7 @@ creation.
 |             |         | add attributes to directory listing                         |
 | 12-Apr-2021 | v0.9.8  | (beta) support CP/NET drives                                |
 | 12-Oct-2023 | v0.9.9  | (beta) handle updated HBIOS Disk Device call                |
-| 6-Jan-2024  | v1.0.0  | updated to latest FsFat (v0.15)                             |
+|  6-Jan-2024 | v1.0.0  | updated to latest FsFat (v0.15)                             |
 |             |         | updated to latest SDCC (v4.3)                               |
-| 6-May-2024  | v1.1.0  | improve floppy format boot record                           |
+|  6-May-2024 | v1.1.0  | improve floppy format boot record                           |
+| 27-Aug-2025 | v1.2.0  | update location of RomWBW IDENT pointer                     |

Source/Apps/HTalk/htalk.asm

@@ -31,7 +31,7 @@ STKSIZ	.EQU	$FF
 ;
 ; HBIOS SYSTEM CALLS AND ID STRING ADDRESS
 ; 
-ROMWBW_ID	.EQU		$FFFE	; ROMWBW ID STRING ADDRESS
+ROMWBW_ID	.EQU		$FFFC	; ROMWBW ID STRING ADDRESS
 HBIOS_SYS	.EQU		$FFF0 	; HBIOS SYSCALL ADDRESS
 
 H_SYSGET	.EQU		$F8		;	GET SYSTEM INFO

Source/Apps/Tune/hbios.inc

@@ -1,4 +1,4 @@
-IDENT		.EQU	$FFFE		; loc of RomWBW HBIOS ident ptr
+IDENT		.EQU	$FFFC		; loc of RomWBW HBIOS ident ptr
 ;
 BF_SYSVER	.EQU	$F1		; BIOS: VER function
 BF_SYSGET	.EQU	$F8		; HBIOS: SYSGET function

Source/Apps/Tune/tune.asm

@@ -446,7 +446,7 @@ IDBIO:
 ;
 IDBIO1:
 	; Check for RomWBW (HBIOS)
-	LD	HL,($FFFE)	; HL := HBIOS ident location
+	LD	HL,($FFFC)	; HL := HBIOS ident location
 	LD	A,'W'		; First byte of ident
 	CP	(HL)		; Compare
 	JR	NZ,IDBIO2	; Not HBIOS

Source/Apps/XM/xmhb.z80

@@ -239,7 +239,7 @@ IDBIO:
 ;
 IDBIO1:
 	; Check for RomWBW (HBIOS)
-	LD	HL,(0FFFEH)	; HL := HBIOS ident location
+	LD	HL,(0FFFCH)	; HL := HBIOS ident location
 	LD	A,'W'		; First byte of ident
 	CP	(HL)		; Compare
 	JR	NZ,IDBIO2	; Not HBIOS

Source/Apps/XM/xmhb_old.z80

@@ -180,7 +180,7 @@ IDBIO:
 ;
 IDBIO1:
 	; Check for RomWBW (HBIOS)
-	LD	HL,(0FFFEH)	; HL := HBIOS ident location
+	LD	HL,(0FFFCH)	; HL := HBIOS ident location
 	LD	A,'W'		; First byte of ident
 	CP	(HL)		; Compare
 	JR	NZ,IDBIO2	; Not HBIOS

Source/Apps/XM/xmuf.z80

@@ -175,7 +175,7 @@ IDBIO:
 ;
 IDBIO1:
 	; Check for RomWBW (HBIOS)
-	LD	HL,(0FFFEH)	; HL := HBIOS ident location
+	LD	HL,(0FFFCH)	; HL := HBIOS ident location
 	LD	A,'W'		; First byte of ident
 	CP	(HL)		; Compare
 	JR	NZ,IDBIO2	; Not HBIOS

Source/Apps/ZMD/zmdhb.z80

@@ -273,7 +273,7 @@ IDBIO:
 ;
 IDBIO1:
 	; Check for RomWBW (HBIOS)
-	LD	HL,(0FFFEH)	; HL := HBIOS ident location
+	LD	HL,(0FFFCH)	; HL := HBIOS ident location
 	LD	A,'W'		; First byte of ident
 	CP	(HL)		; Compare
 	JR	NZ,IDBIO2	; Not HBIOS

Source/Apps/assign/assign.asm

@@ -190,7 +190,7 @@ init:
 	ldir			; do the copy
 ;
 	; determine end of CBIOS (assume HBIOS for now)
-	ld	hl,($FFFE)	; get proxy start address
+	ld	hl,($FFFC)	; get proxy start address
 	ld	(bioend),hl	; save as CBIOS end address
 ;
 	; check for UNA (UBIOS)

Source/Apps/cpuspd/cpuspd.asm

@@ -29,7 +29,7 @@ bf_sysres_int	.equ	$00		; reset hbios internal
 bf_sysres_warm	.equ	$01		; warm start (restart boot loader)
 bf_sysres_cold	.equ	$02		; cold start
 ;
-ident		.equ	$FFFE		; loc of RomWBW HBIOS ident ptr
+ident		.equ	$FFFC		; loc of RomWBW HBIOS ident ptr
 ;
 ;=======================================================================
 ;

Source/Apps/reboot/reboot.asm

@@ -1,299 +1,299 @@
-;==============================================================================
-; REBOOT - Allows the user to Cold or Warm Boot the RomWBW System
-; Version 1.0 12-October-2024
-;==============================================================================
-;
-; Author: MartinR (October 2024)
-;    Based **very heavily** on code by Wayne Warthen (wwarthen@gmail.com)
-;______________________________________________________________________________
-;
-; Usage:
-;   REBOOT [/C] [/W] [/?]
-;     ex: REBOOT	Display version and usage
-;         REBOOT /?	Display version and usage
-;         REBOOT /C	Cold boot RomWBW system
-;	  REBOOT /W	Warm boot RomWBW system
-;
-; Operation:
-;   Cold or warm boots a RomWBW system depending on the user option selected.
-;
-; This code will only execute on a Z80 CPU (or derivitive)
-;
-; This source code assembles with TASM V3.2 under Windows-11 using the
-; following command line:
-;	tasm -80 -g3 -l REBOOT.ASM REBOOT.COM
-;	ie: Z80 CPU; output format 'binary' named .COM (rather than .OBJ)
-;	and includes a symbol table as part of the listing file.
-;______________________________________________________________________________
-;
-; Change Log:
-;   2024-09-11 [WBW] Release of RomWBW CPU Speed Selector v1.0 used as the basis
-;   2024-10-12 [MR ] Initial release of version 1.0
-;______________________________________________________________________________
-;
-; Include Files
-;
-#include "../../ver.inc"		; Used for building RomWBW
-#include "../../HBIOS/hbios.inc"
-
-;#include "ver.inc"			; Used for testing purposes....
-;#include "hbios.inc"			; ....during code development
-;
-;===============================================================================
-;
-; 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
-;
-bf_sysreset	.equ	$F0		; restart system
-bf_sysres_int	.equ	$00		; reset hbios internal
-bf_sysres_warm	.equ	$01		; warm start (restart boot loader)
-bf_sysres_cold	.equ	$02		; cold start
-;
-ident		.equ	$FFFE		; loc of RomWBW HBIOS ident ptr
-;
-;===============================================================================
-;
-	.org	$0100			; standard CP/M TPA executable
-;
-	; setup stack (save old value)
-	ld	(stksav),sp		; save stack
-	ld	sp,stack		; set new stack
-;
-	call	crlf
-	ld	de,str_banner		; banner
-	call	prtstr
-;
-	; initialization
-	call	init			; initialize
-	jr	nz,exit			; abort if init fails
-;
-	call	main			; do the real work
-;
-exit:
-	; clean up and return to command processor
-	call	crlf			; formatting
-	ld	sp,(stksav)		; restore stack
-	jp	restart			; return to CP/M via restart
-;
-;
-;===============================================================================
-; Main Program
-;===============================================================================
-;
-; Initialization
-;
-init:
-	; check for UNA (UBIOS)
-	ld	a,($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:
-	; skip to start of first command line parameter
-	ld	ix,$0081	; point to start of parm area (past length byte)
-	call	nonblank	; skip to next non-blank char
-	cp	'/'		; option prefix?
-	jr	nz,usage	; display help info & exit if nothing to do
-;
-	; process any options
-	inc	ix		; fetch next character and process
-	ld	a,(ix)
-	call	upcase		; ensure it's an upper case character
-	cp	'C'		; if it's a 'C' then
-	jr	z,cboot		; do a cold boot.
-	cp	'W'		; if it's a 'W' then
-	jr	z,wboot		; do a warm boot.
-	cp	'?'		; if it's a '?' then
-	jr	z,usage		; display usage info and exit.
-	jr	err_parm	; or not a recognised option, so report and exit.
-;
-; Handle Usage Information
-;
-usage:
-	call	crlf2		; display the options for this utility
-	ld	de,str_usage
-	call	prtstr
-	or	$FF
-	ret			; exit back out to CP/M CCP
-;
-; Handle Warm Boot
-;
-wboot:
-	ld	de,str_warmboot		; message
-	call	prtstr			; display it
-	ld	b,bf_sysreset		; system restart
-	ld	c,bf_sysres_warm	; warm start
-	call	$fff0			; call hbios
-;
-; Handle Cold Boot
-;
-cboot:
-	ld	de,str_coldboot		; message
-	call	prtstr			; display it
-	ld	b,bf_sysreset		; system restart
-	ld	c,bf_sysres_cold	; cold start
-	call	$fff0			; call hbios
-;
-;===============================================================================
-; 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_ret:
-	call	crlf2
-	call	prtstr
-	or	$FF			; signal error
-	ret
-;
-;===============================================================================
-; Utility Routines
-;===============================================================================
-;
-; Print character in A without destroying any registers
-;
-prtchr:
-	push	af
-	push	bc		; save registers
-	push	de
-	push	hl
-	ld	e,a		; character to print in E
-	ld	c,$02		; BDOS function to output a character
-	call	bdos		; do it
-	pop	hl		; restore registers
-	pop	de
-	pop	bc
-	pop	af
-	ret
-;
-; Start a new line
-;
-crlf2:
-	call	crlf		; two of them
-crlf:
-	push	af		; preserve AF
-	ld	a,13		; <CR>
-	call	prtchr		; print it
-	ld	a,10		; <LF>
-	call	prtchr		; print it
-	pop	af		; restore AF
-	ret
-;
-; 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
-;
-; Get the next non-blank character from (ix)
-;
-nonblank:
-	ld	a,(ix)		; load next character
-	or	a		; string ends with a null
-	ret	z		; if null, return pointing to null
-	cp	' '		; check for blank
-	ret	nz		; return if not blank
-	inc	ix		; if blank, increment character pointer
-	jr	nonblank	; and loop
-;
-; Convert character in A to uppercase
-;
-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
-;
-;===============================================================================
-; Constants
-;===============================================================================
-;
-str_banner	.db	"RomWBW Reboot Utility, Version 1.0, 12-Oct-2024\r\n"
-		.db	"   Wayne Warthen (wwarthen@gmail.com) & MartinR",0
-;
-str_warmboot	.db	"\r\n\r\nWarm booting...\r\n",0
-str_coldboot	.db	"\r\n\r\nCold booting...\r\n",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 (REBOOT /? for usage)",0
-;
-str_usage	.db	"  Usage: REBOOT /? - Display this help info.\r\n"
-		.db	"         REBOOT /W - Warm boot system\r\n"
-		.db	"         REBOOT /C - Cold boot system\r\n"
-		.db	"         Options are case insensitive.\r\n",0
-;
-;===============================================================================
-; Working data
-;===============================================================================
-;
-stksav		.dw	0		; stack pointer saved at start
-		.fill	stksiz,0	; stack
-stack		.equ	$		; stack top
-;
-;===============================================================================
-;
+;==============================================================================
+; REBOOT - Allows the user to Cold or Warm Boot the RomWBW System
+; Version 1.0 12-October-2024
+;==============================================================================
+;
+; Author: MartinR (October 2024)
+;    Based **very heavily** on code by Wayne Warthen (wwarthen@gmail.com)
+;______________________________________________________________________________
+;
+; Usage:
+;   REBOOT [/C] [/W] [/?]
+;     ex: REBOOT	Display version and usage
+;         REBOOT /?	Display version and usage
+;         REBOOT /C	Cold boot RomWBW system
+;	  REBOOT /W	Warm boot RomWBW system
+;
+; Operation:
+;   Cold or warm boots a RomWBW system depending on the user option selected.
+;
+; This code will only execute on a Z80 CPU (or derivitive)
+;
+; This source code assembles with TASM V3.2 under Windows-11 using the
+; following command line:
+;	tasm -80 -g3 -l REBOOT.ASM REBOOT.COM
+;	ie: Z80 CPU; output format 'binary' named .COM (rather than .OBJ)
+;	and includes a symbol table as part of the listing file.
+;______________________________________________________________________________
+;
+; Change Log:
+;   2024-09-11 [WBW] Release of RomWBW CPU Speed Selector v1.0 used as the basis
+;   2024-10-12 [MR ] Initial release of version 1.0
+;______________________________________________________________________________
+;
+; Include Files
+;
+#include "../../ver.inc"		; Used for building RomWBW
+#include "../../HBIOS/hbios.inc"
+
+;#include "ver.inc"			; Used for testing purposes....
+;#include "hbios.inc"			; ....during code development
+;
+;===============================================================================
+;
+; 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
+;
+bf_sysreset	.equ	$F0		; restart system
+bf_sysres_int	.equ	$00		; reset hbios internal
+bf_sysres_warm	.equ	$01		; warm start (restart boot loader)
+bf_sysres_cold	.equ	$02		; cold start
+;
+ident		.equ	$FFFC		; loc of RomWBW HBIOS ident ptr
+;
+;===============================================================================
+;
+	.org	$0100			; standard CP/M TPA executable
+;
+	; setup stack (save old value)
+	ld	(stksav),sp		; save stack
+	ld	sp,stack		; set new stack
+;
+	call	crlf
+	ld	de,str_banner		; banner
+	call	prtstr
+;
+	; initialization
+	call	init			; initialize
+	jr	nz,exit			; abort if init fails
+;
+	call	main			; do the real work
+;
+exit:
+	; clean up and return to command processor
+	call	crlf			; formatting
+	ld	sp,(stksav)		; restore stack
+	jp	restart			; return to CP/M via restart
+;
+;
+;===============================================================================
+; Main Program
+;===============================================================================
+;
+; Initialization
+;
+init:
+	; check for UNA (UBIOS)
+	ld	a,($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:
+	; skip to start of first command line parameter
+	ld	ix,$0081	; point to start of parm area (past length byte)
+	call	nonblank	; skip to next non-blank char
+	cp	'/'		; option prefix?
+	jr	nz,usage	; display help info & exit if nothing to do
+;
+	; process any options
+	inc	ix		; fetch next character and process
+	ld	a,(ix)
+	call	upcase		; ensure it's an upper case character
+	cp	'C'		; if it's a 'C' then
+	jr	z,cboot		; do a cold boot.
+	cp	'W'		; if it's a 'W' then
+	jr	z,wboot		; do a warm boot.
+	cp	'?'		; if it's a '?' then
+	jr	z,usage		; display usage info and exit.
+	jr	err_parm	; or not a recognised option, so report and exit.
+;
+; Handle Usage Information
+;
+usage:
+	call	crlf2		; display the options for this utility
+	ld	de,str_usage
+	call	prtstr
+	or	$FF
+	ret			; exit back out to CP/M CCP
+;
+; Handle Warm Boot
+;
+wboot:
+	ld	de,str_warmboot		; message
+	call	prtstr			; display it
+	ld	b,bf_sysreset		; system restart
+	ld	c,bf_sysres_warm	; warm start
+	call	$fff0			; call hbios
+;
+; Handle Cold Boot
+;
+cboot:
+	ld	de,str_coldboot		; message
+	call	prtstr			; display it
+	ld	b,bf_sysreset		; system restart
+	ld	c,bf_sysres_cold	; cold start
+	call	$fff0			; call hbios
+;
+;===============================================================================
+; 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_ret:
+	call	crlf2
+	call	prtstr
+	or	$FF			; signal error
+	ret
+;
+;===============================================================================
+; Utility Routines
+;===============================================================================
+;
+; Print character in A without destroying any registers
+;
+prtchr:
+	push	af
+	push	bc		; save registers
+	push	de
+	push	hl
+	ld	e,a		; character to print in E
+	ld	c,$02		; BDOS function to output a character
+	call	bdos		; do it
+	pop	hl		; restore registers
+	pop	de
+	pop	bc
+	pop	af
+	ret
+;
+; Start a new line
+;
+crlf2:
+	call	crlf		; two of them
+crlf:
+	push	af		; preserve AF
+	ld	a,13		; <CR>
+	call	prtchr		; print it
+	ld	a,10		; <LF>
+	call	prtchr		; print it
+	pop	af		; restore AF
+	ret
+;
+; 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
+;
+; Get the next non-blank character from (ix)
+;
+nonblank:
+	ld	a,(ix)		; load next character
+	or	a		; string ends with a null
+	ret	z		; if null, return pointing to null
+	cp	' '		; check for blank
+	ret	nz		; return if not blank
+	inc	ix		; if blank, increment character pointer
+	jr	nonblank	; and loop
+;
+; Convert character in A to uppercase
+;
+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
+;
+;===============================================================================
+; Constants
+;===============================================================================
+;
+str_banner	.db	"RomWBW Reboot Utility, Version 1.0, 12-Oct-2024\r\n"
+		.db	"   Wayne Warthen (wwarthen@gmail.com) & MartinR",0
+;
+str_warmboot	.db	"\r\n\r\nWarm booting...\r\n",0
+str_coldboot	.db	"\r\n\r\nCold booting...\r\n",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 (REBOOT /? for usage)",0
+;
+str_usage	.db	"  Usage: REBOOT /? - Display this help info.\r\n"
+		.db	"         REBOOT /W - Warm boot system\r\n"
+		.db	"         REBOOT /C - Cold boot system\r\n"
+		.db	"         Options are case insensitive.\r\n",0
+;
+;===============================================================================
+; Working data
+;===============================================================================
+;
+stksav		.dw	0		; stack pointer saved at start
+		.fill	stksiz,0	; stack
+stack		.equ	$		; stack top
+;
+;===============================================================================
+;
 	.end

Source/Apps/slabel/slabel.asm

@@ -68,7 +68,7 @@ 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
+ident		.equ	$FFFC		; 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)

Source/Apps/startup/startup.asm

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

Source/Build.cmd

@@ -12,6 +12,7 @@ call BuildZZRCC || exit /b
 call BuildZRC512 || exit /b
 call BuildSZ80 || exit /b
 call BuildEZ512 || exit /b
+call BuildMSX || exit /b
 
 if "%1" == "dist" (
   call Clean || exit /b

Source/BuildMSX.cmd

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

Source/Clean.cmd

@@ -26,3 +26,4 @@ pushd Doc && call Clean & popd
 pushd ZRC && call Clean & popd
 pushd Z1RCC && call Clean & popd
 pushd ZZRCC && call Clean & popd
+pushd MSX && call Clean & popd

Source/Doc/Applications.md

@@ -1729,7 +1729,7 @@ to format and test floppy disk media.
 
 #### Syntax
 
-`FDU`
+| `FDU`
 
 #### Usage
 
@@ -1850,7 +1850,7 @@ make it simpler to format media including floppy disks.
 
 #### Syntax
 
-`FORMAT`
+| `FORMAT`
 
 #### Notes
 
@@ -1877,16 +1877,16 @@ against HBIOS Character Units.
 
 #### Syntax
 
-`HTALK COMn:`
+| `HTALK `*<unit>*
 
 #### Usage
 
 `HTALK` operates at the HBIOS level.
 
-The parameter to `TALK` refers to a HBIOS character unit.  Upon
-execution all characters typed at the console will be sent to the
-device specified and all characters received by the specified device
-will be echoed on the console.
+The *<unit>* parameter to `TALK` is a single number referring to an HBIOS 
+character unit.  Upon execution all characters typed at the console will
+be sent to the device specified and all characters received by the 
+specified device will be echoed on the console.
 
 Press Control+Z on the console to terminate the application.
 
@@ -1913,8 +1913,8 @@ ports dynamically.
 
 #### Syntax
 
-`MODE /?`
-`MODE COM`*`<n>`*`: [`*`<baud>`*`[,`*`<parity>`*`[,`*`<databits>`*`[,`*`<stopbits>`*`]]]] [/P]`
+| `MODE /?`
+| `MODE COM`*`<n>`*`: [`*`<baud>`*`[,`*`<parity>`*`[,`*`<databits>`*`[,`*`<stopbits>`*`]]]] [/P]`
 
 `/?` displays command usage and version information
 
@@ -2029,7 +2029,7 @@ and set the time and registers of the RTC.
 
 #### Syntax
 
-`RTC`
+| `RTC`
 
 #### Usage
 
@@ -2088,7 +2088,7 @@ the `SET` command
 
 #### Syntax
 
-`SLABEL [unit.slice=label] [/?]`
+| `SLABEL [unit.slice=label] [/?]`
 
 `unit.slice` the disk unit and slice number to apply the new label to. This 
 is in the same format as when booting the system to a disk
@@ -2416,7 +2416,7 @@ shown on your console.  The `TALK` application does this.
 
 #### Syntax
 
-`TALK [TTY:|CRT:|BAT:UC1:]`
+| `TALK [TTY:|CRT:|BAT:|UC1:]`
 
 #### Usage
 
@@ -2453,7 +2453,7 @@ Z80 port of Palo Alto Tiny Basic.
 
 #### Syntax
 
-`TBASIC` [*\<filename\>*]
+| `TBASIC` [*\<filename\>*]
 
 #### Usage
 
@@ -2484,9 +2484,10 @@ displays the value of the counter.
 
 #### Syntax
 
-`TIMER`
-`TIMER /?`
-`TIMER /C`
+| `TIMER`
+| `TIMER /?`
+| `TIMER /C`
+| `TIMER /Z`
 
 #### Usage
 
@@ -2494,9 +2495,11 @@ Use `TIMER` to display the current value of the counter.
 
 Use `TIMER /C` to display the value of the counter continuously.
 
+Use `TIMER /Z` to zero the seconds counter.
+
 The display of the counter will be something like this:
 
-`13426 Ticks     268.52 Seconds`
+`2859 Ticks   24.18 Seconds   0:00:24.18 HH:MM:SS`
 
 The first number is the total number of ticks since system startup, where
 there are 50 ticks per second. The second number is the total number of
@@ -2504,15 +2507,18 @@ seconds since system startup. Numbers are displayed in decimal format.
 
 #### Notes
 
-The seconds value is displayed with a fractional value which is not a
-an actual fraction, but rather the number of ticks past the seconds
-rollover.  All values are in hex.
+Not all systems will have a system timer.  In this case, the
+`TIMER` command will output 0 for both ticks and seconds and never
+increment.
+
+The resolution of the timer is determined by the system timer
+frequency which is typically 50Hz.  This means that the seconds
+fraction will increment 0.02 seconds with each timer tick.
 
 The primary use of the `TIMER` application is to test the system
-timer functionality of your system.
-
-In theory, you could capture the value before and after some process
-you want to time.
+timer functionality of your system.  However, it can be used to
+capture the value before and after some process you want to measure
+elapsed runtime.
 
 #### Etymology
 
@@ -2537,7 +2543,7 @@ whether support for it is included in the RomWBW HBIOS configuration
 
 #### Syntax
 
-`TUNE `*`<filename>`* `*`<options>`*`
+| `TUNE `*`<filename>`* `*`<options>`*`
 
 *`<filename>`* is the name of a sound file ending in .PT2, .PT3, or
 .MYM
@@ -2672,7 +2678,7 @@ chips.
 
 #### Syntax
 
-`VGMPLAY `*`<filename>`*
+| `VGMPLAY `*`<filename>`*
 
 *`<filename>`* is the name of a sound file ending in .VGM
 
@@ -2915,7 +2921,7 @@ to Z-System compatibility.
 
 #### Syntax
 
-`ZMD` *\<mode\>\<protocol\>\<unit\>* [*\<filename\>*]
+| `ZMD` *\<mode\>\<protocol\>\<unit\>* [*\<filename\>*]
 
 where *\<mode\>* can be:\
 **`   S  -`** Send file from BBS \
@@ -2995,7 +3001,7 @@ that is independent of the console running `ZMP`.
 
 #### Syntax
 
-`ZMD` *[\<unit\>]*
+| `ZMD` *[\<unit\>]*
 
 *\<unit\>* can specify a single digit (0-9) indicating
 the RomWBW Character Unit to use for the modem port.

Source/Doc/Hardware.md

@@ -116,6 +116,7 @@ Others
 | [eZ80 for RCBus Module]^8^, 512K RAM/ROM                    | RCBus    | RCEZ80_std.rom              |        115200 |
 | [Genesis Z180 System]^7^                                    | STD      | GMZ180_std.rom              |        115200 |
 | [Heath H8 Z80 System]^5^                                    | H8       | HEATH_std.rom               |        115200 |
+| [MSX]^9^                                                    | MSX      | MSX_std.rom                 |        115200 |
 | [NABU w/ RomWBW Option Board]^5^                            | NABU     | NABU_std.rom                |        115200 |
 | [S100 Computers Z180 SBC]^4^                                | S100     | S100_std.rom                |         57600 |
 | [S100 Computers Z80 CPU]^4^                                 | S100     | SZ80_std.rom                |          9600 |
@@ -132,6 +133,7 @@ Others
 | ^6^Designed by Alan Cox
 | ^7^Designed by Doug Jackson
 | ^8^Designed by Dean Netherton
+| ^9^MSX Port by Henk Berends
 
 `\clearpage`{=latex}
 
@@ -625,6 +627,47 @@ It also has an interface to the RetroBrew bus (ECB) for access to additional per
 
 `\clearpage`{=latex}
 
+## MSX
+
+Support for standard MSX hardware by Henk Berends
+
+The default configuration is for a European MSX 2 (PAL) with international keyboard and 512KB RAM Mapper extension.
+
+#### ROM Image File:  MSX_std.rom
+
+|                   |               |
+|-------------------|---------------|
+| Bus               | MSX           |
+| Default CPU Speed | 3.579 MHz     |
+| Interrupts        | Mode 1        |
+| System Timer      | TMS           |
+| Serial Default    | 115200 Baud   |
+| Memory Manager    | MSX           |
+| ROM Size          | 0 KB          |
+| RAM Size          | 448 KB        |
+
+#### Supported Hardware
+
+- RP5C01: IO=180
+- UART: IO=128
+- UART: IO=136
+- TMS: MODE=MSXMKY, IO=152, SCREEN=80X24, KEYBOARD=MKY, INTERRUPTS ENABLED
+- MKY: IO=168
+- MD: TYPE=RAM
+- IDE: MODE=RC, IO=16, MASTER
+- IDE: MODE=RC, IO=16, SLAVE
+- PPIDE: MODE=MSX_BEER, IO=48, MASTER
+- PPIDE: MODE=MSX_BEER, NO SLAVE
+- AY38910: MODE=MSX, IO=160, CLOCK=1789772 HZ
+
+#### Notes:
+
+- MSX 1 can be used with the TMS VDP set to 40 columns mode.
+- Storage options are the BEER IDE and SODA IDE interfaces.
+- Serial option is a 16550 UART interface.
+
+`\clearpage`{=latex}
+
 ## NABU w/ RomWBW Option Board
 
 No modifications to the NABU motherboard needed. Leave the standard NABU ROM in its socket 

Source/Doc/Introduction.md

@@ -345,6 +345,8 @@ please let me know if I missed you!
 * Randy Merkel provided the ZSDOS Programmer's Manual as translated
   by Wayne Hortensius.
 
+* Henk Berends added support for the MSX platform.
+
 `\clearpage`{=latex}
 
 ## Related Projects

Source/HBIOS/Build.cmd

@@ -272,5 +272,6 @@ call Build NABU std || exit /b
 call Build SZ80 std || exit /b
 call Build SZ80 fpga || exit /b
 call Build UNA std || exit /b
+call Build MSX std || exit /b
 
 goto :eof

Source/HBIOS/Build.ps1

@@ -27,7 +27,7 @@ $ErrorAction = 'Stop'
 # UNA BIOS is simply imbedded, it is not built here.
 #
 
-$PlatformListZ80 = "SBC", "MBC", "ZETA", "ZETA2", "RCZ80", "EZZ80", "Z80RETRO", "DUO", "UNA", "HEATH", "MON", "NABU", "SZ80", "RCEZ80"
+$PlatformListZ80 = "SBC", "MBC", "ZETA", "ZETA2", "RCZ80", "EZZ80", "Z80RETRO", "DUO", "UNA", "HEATH", "MON", "NABU", "SZ80", "RCEZ80", "MSX"
 $PlatformListZ180 = "N8", "MK4", "RCZ180", "SCZ180", "DYNO", "RPH", "S100", "EPITX", "GMZ180"
 $PlatformListZ280 = "RCZ280"
 

Source/HBIOS/Build.sh

@@ -55,6 +55,7 @@ if [ "${ROM_PLATFORM}" == "dist" ] ; then
 	ROM_PLATFORM="NABU"; ROM_CONFIG="std"; bash Build.sh
 	ROM_PLATFORM="SZ80"; ROM_CONFIG="std"; bash Build.sh
 	ROM_PLATFORM="SZ80"; ROM_CONFIG="fpga"; bash Build.sh
+	ROM_PLATFORM="MSX"; ROM_CONFIG="std"; bash Build.sh
 	ROM_PLATFORM="UNA"; ROM_CONFIG="std"; bash Build.sh
 	exit
 fi

Source/HBIOS/Config/MSX_std.asm

@@ -0,0 +1,94 @@
+;
+;==================================================================================================
+;   ROMWBW DEFAULT BUILD SETTINGS FOR MSX
+;==================================================================================================
+;
+; THIS FILE DEFINES THE DEFAULT CONFIGURATION SETTINGS FOR THE PLATFORM
+; INDICATED ABOVE.  THESE SETTINGS DEFINE THE OFFICIAL BUILD FOR THIS
+; PLATFORM AS DISTRIBUTED IN ROMWBW RELEASES.
+;
+; ROMWBW USES CASCADING CONFIGURATION FILES AS INDICATED BELOW:
+;
+; cfg_MASTER.asm			- MASTER: CONFIGURATION FILE DEFINES ALL POSSIBLE ROMWBW SETTINGS
+; |
+; +-> cfg_<platform>.asm		- PLATFORM: DEFAULT SETTINGS FOR SPECIFIC PLATFORM
+;     |
+;     +-> Config/<plt>_std.asm		- BUILD: SETTINGS FOR EACH OFFICIAL DIST BUILD
+;         |
+;         +-> Config/<plt>_<cust>.asm	- USER: CUSTOM USER BUILD SETTINGS
+;
+; THE TOP (MASTER CONFIGURATION) FILE DEFINES ALL POSSIBLE ROMWBW
+; CONFIGURATION SETTINGS. EACH FILE BELOW THE MASTER CONFIGURATION FILE
+; INHERITS THE CUMULATIVE SETTINGS OF THE FILES ABOVE IT AND MAY
+; OVERRIDE THESE SETTINGS AS DESIRED.
+;
+; OTHER THAN THE TOP MASTER FILE, EACH FILE MUST "#INCLUDE" ITS PARENT
+; FILE (SEE #INCLUDE STATEMENT BELOW).  THE TOP TWO FILES SHOULD NOT BE
+; MODIFIED.
+;
+; TO CUSTOMIZE YOUR BUILD SETTINGS YOU SHOULD MODIFY THIS FILE, THE
+; DEFAULT BUILD SETTINGS (Config/<platform>_std.asm) OR PREFERABLY
+; CREATE AN OPTIONAL CUSTOM USER SETTINGS FILE THAT INCLUDES THE DEFAULT
+; BUILD SETTINGS FILE (SEE EXAMPLE Config/SBC_user.asm).
+;
+; BY CREATING A CUSTOM USER SETTINGS FILE, YOU ARE LESS LIKELY TO BE
+; IMPACTED BY FUTURE CHANGES BECAUSE YOU WILL BE INHERITING MOST
+; OF YOUR SETTINGS WHICH WILL BE UPDATED BY AUTHORS AS ROMWBW EVOLVES.
+;
+; PLEASE REFER TO THE CUSTOM BUILD INSTRUCTIONS (README.TXT) IN THE
+; SOURCE DIRECTORY (TWO DIRECTORIES ABOVE THIS ONE).
+;
+; *** WARNING: ASIDE FROM THE MASTER CONFIGURATION FILE, YOU MUST USE
+; ".SET" TO OVERRIDE SETTINGS.  THE ASSEMBLER WILL ERROR IF YOU ATTEMPT
+; TO USE ".EQU" BECAUSE IT WON'T LET YOU REDEFINE A SETTING WITH ".EQU".
+;
+#DEFINE AUTO_CMD	""		; AUTO CMD WHEN BOOT_TIMEOUT IS ENABLED
+#DEFINE DEFSERCFG	SER_115200_8N1 | SER_RTS	; DEFAULT SERIAL CONFIGURATION
+;
+#INCLUDE "cfg_MSX.asm"
+;
+BOOT_TIMEOUT	.SET	-1		; AUTO BOOT TIMEOUT IN SECONDS, -1 TO DISABLE, 0 FOR IMMEDIATE
+BOOT_PRETTY	.SET	FALSE		; BOOT WITH PRETTY PLATFORM NAME
+AUTOCON		.SET	FALSE		; ENABLE CONSOLE TAKEOVER AT LOADER PROMPT
+;
+CPUOSC		.SET	3579545		; CPU OSC FREQ IN MHZ
+;
+RAMSIZE		.SET	512-64		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!) (MSX_NOTE: SUBSTRACT 64K FROM RAM MAPPER SIZE)
+;
+KIOENABLE	.SET	FALSE		; ENABLE ZILOG KIO SUPPORT
+CTCENABLE	.SET	FALSE		; ENABLE ZILOG CTC SUPPORT
+FPLED_ENABLE	.SET	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+LCDENABLE	.SET	FALSE		; ENABLE LCD DISPLAY
+;
+CRTACT		.SET	TRUE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
+VDAEMU_SERKBD	.SET	$FF		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
+MKYKBLOUT	.SET	KBD_US		; KBD KEYBOARD LANGUAGE: KBD_[US|DE]
+;
+DSRTCENABLE	.SET	FALSE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
+RP5RTCENABLE	.SET	TRUE		; RP5C01 RTC BASED CLOCK (RP5RTC.ASM) (MSX_NOTE: MSX 1 MAY NOT HAVE A RTC, MSX 2 ALWAYS HAS ONE)
+INTRTCENABLE	.SET	FALSE		; ENABLE PERIODIC INTERRUPT CLOCK DRIVER (INTRTC.ASM)
+;
+DUARTENABLE	.SET	FALSE		; DUART: ENABLE 2681/2692 SERIAL DRIVER (DUART.ASM)
+UARTENABLE	.SET	TRUE		; UART: ENABLE 8250/16550-LIKE SERIAL DRIVER (UART.ASM)
+ACIAENABLE	.SET	FALSE		; ACIA: ENABLE MOTOROLA 6850 ACIA DRIVER (ACIA.ASM)
+SIOENABLE	.SET	FALSE		; SIO: ENABLE ZILOG SIO SERIAL DRIVER (SIO.ASM)
+;
+TMSENABLE	.SET	TRUE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
+TMSMODE		.SET	TMSMODE_MSXMKY	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MSX|MSXKBD|MSXMKY|MBC|COLECO|DUO|NABU|MSXUKY]
+TMS80COLS	.SET	TRUE		; TMS: ENABLE 80 COLUMN SCREEN, REQUIRES V9938/V9958
+;
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
+EFENABLE	.SET	FALSE		; EF: ENABLE EF9345 VIDEO DRIVER (EF.ASM)
+FDENABLE	.SET	FALSE		; FD: ENABLE FLOPPY DISK DRIVER (FD.ASM)
+IDEENABLE	.SET	TRUE		; IDE: ENABLE IDE DISK DRIVER (IDE.ASM) (MSX_NOTE: REQUIRES SODA IDE CART)
+PPIDEENABLE	.SET	TRUE		; PPIDE: ENABLE PARALLEL PORT IDE DISK DRIVER (PPIDE.ASM)
+SDENABLE	.SET	FALSE		; SD: ENABLE SD CARD DISK DRIVER (SD.ASM)
+CHENABLE	.SET	FALSE		; CH: ENABLE CH375/376 USB SUPPORT
+PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
+LPTENABLE	.SET	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM) (MSX_NOTE: SOME MSX MACHINES DON'T HAVE A LPT PORT)
+PPAENABLE	.SET	FALSE		; PPA: ENABLE IOMEGA ZIP DRIVE (PPA) DISK DRIVER (PPA.ASM)
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IOMEGA ZIP PLUS DRIVE (IMM) DISK DRIVER (IMM.ASM)
+SYQENABLE	.SET	FALSE		; SYQ: ENABLE SYQUEST SPARQ DISK DRIVER (SYQ.ASM)
+SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER (MSX_NOTE: THERE ARE CARTS WITH THIS PSG LIKE THE MMM)
+AY38910ENABLE	.SET	TRUE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER

Source/HBIOS/Config/SZ80_std.asm

@@ -48,7 +48,7 @@
 #INCLUDE "cfg_SZ80.asm"
 ;
 CPUOSC		.SET	8000000		; CPU OSC FREQ IN MHZ
-RAMSIZE		.SET	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
+RAMSIZE		.SET	1024		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.SET	0		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
 CRTACT		.SET	TRUE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 MEMMGR		.SET	MM_SZ80		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH|MON|EZ512|SZ80]
@@ -60,5 +60,3 @@ PPIDEENABLE	.SET	TRUE		; PPIDE: ENABLE PARALLEL PORT IDE DISK DRIVER (PPIDE.ASM)
 ESPSDENABLE	.SET	TRUE		; ESPSD: ENABLE S100 ESP32 SD DISK DRIVER (ESPSD.ASM)
 ESPSDCNT	.SET	1		; ESPSD: NUMBER OF BOARDS TO DETECT (1-2), 1-2 DEVICES PER BOARD
 ESPSD0DUAL	.SET	TRUE		; ESPSD 0: DUAL INTERFACE BOARD (DUAL SD)
-
-#DEFINE SIZERAM

Source/HBIOS/Layout.txt

@@ -38,7 +38,8 @@ ROM2 [32K] -> rom2.bin
   netboot     [4.00K]
   updater.bin [3.25K]
   sysconf.bin [2.00K]
-  usrrom.bin  [3.75K]
+  usrrom.bin  [0.50K]
+  slack       [3.25K]
 
 ROM3 [32K] -> rom3.bin
   hwmon       [ 8.00K]

Source/HBIOS/cfg_MSX.asm

@@ -0,0 +1,407 @@
+;
+;==================================================================================================
+;   ROMWBW PLATFORM CONFIGURATION DEFAULTS FOR PLATFORM: MSX
+;==================================================================================================
+;
+; THIS FILE DEFINES THE DEFAULT CONFIGURATION SETTINGS FOR THE PLATFORM
+; INDICATED ABOVE. THIS FILE SHOULD *NOT* NORMALLY BE CHANGED.	INSTEAD,
+; YOU SHOULD OVERRIDE SETTINGS YOU WANT USING A CONFIGURATION FILE IN
+; THE CONFIG DIRECTORY UNDER THIS DIRECTORY.
+;
+; THIS FILE SHOULD *NOT* NORMALLY BE CHANGED.  IT IS MAINTAINED BY THE
+; AUTHORS OF ROMWBW.  TO OVERRIDE SETTINGS YOU SHOULD USE A
+; CONFIGURATION FILE IN THE CONFIG DIRECTORY UNDER THIS DIRECTORY.
+;
+; ROMWBW USES CASCADING CONFIGURATION FILES AS INDICATED BELOW:
+;
+; cfg_MASTER.asm			- MASTER: CONFIGURATION FILE DEFINES ALL POSSIBLE ROMWBW SETTINGS
+; |
+; +-> cfg_<platform>.asm		- PLATFORM: DEFAULT SETTINGS FOR SPECIFIC PLATFORM
+;     |
+;     +-> Config/<plt>_std.asm		- BUILD: SETTINGS FOR EACH OFFICIAL DIST BUILD
+;         |
+;         +-> Config/<plt>_<cust>.asm	- USER: CUSTOM USER BUILD SETTINGS
+;
+; THE TOP (MASTER CONFIGURATION) FILE DEFINES ALL POSSIBLE ROMWBW
+; CONFIGURATION SETTINGS. EACH FILE BELOW THE MASTER CONFIGURATION FILE
+; INHERITS THE CUMULATIVE SETTINGS OF THE FILES ABOVE IT AND MAY
+; OVERRIDE THESE SETTINGS AS DESIRED.
+;
+; OTHER THAN THE TOP MASTER FILE, EACH FILE MUST "#INCLUDE" ITS PARENT
+; FILE (SEE #INCLUDE STATEMENT BELOW).  THE TOP TWO FILES SHOULD NOT BE
+; MODIFIED.  TO CUSTOMIZE YOUR BUILD SETTINGS YOU SHOULD MODIFY THE
+; DEFAULT BUILD SETTINGS (Config/<platform>_std.asm) OR PREFERABLY
+; CREATE AN OPTIONAL CUSTOM USER SETTINGS FILE THAT INCLUDES THE DEFAULT
+; BUILD SETTINGS FILE (SEE EXAMPLE Config/SBC_user.asm).
+;
+; BY CREATING A CUSTOM USER SETTINGS FILE, YOU ARE LESS LIKELY TO BE
+; IMPACTED BY FUTURE CHANGES BECAUSE YOU WILL BE INHERITING MOST
+; OF YOUR SETTINGS WHICH WILL BE UPDATED BY AUTHORS AS ROMWBW EVOLVES.
+;
+; *** WARNING: ASIDE FROM THE MASTER CONFIGURATION FILE, YOU MUST USE
+; ".SET" TO OVERRIDE SETTINGS.  THE ASSEMBLER WILL ERROR IF YOU ATTEMPT
+; TO USE ".EQU" BECAUSE IT WON'T LET YOU REDEFINE A SETTING WITH ".EQU".
+;
+#DEFINE PLATFORM_NAME	"MSX Computer", " [", CONFIG, "]"	; TEXT LABEL OF THIS CONFIG IN STARTUP MESSAGES
+#DEFINE	BOOT_DEFAULT	"H"		; DEFAULT BOOT LOADER CMD FOR EMPTY CMD LINE
+#DEFINE AUTO_CMD	""		; AUTO CMD WHEN BOOT_TIMEOUT IS ENABLED
+#DEFINE DEFSERCFG	SER_115200_8N1 | SER_RTS	; DEFAULT SERIAL CONFIGURATION
+;
+#INCLUDE "cfg_MASTER.asm"
+;
+PLATFORM	.SET	PLT_MSX		; PLT_[SBC|ZETA|ZETA2|N8|MK4|UNA|RCZ80|RCEZ80|RCZ180|EZZ80|SCZ180|GMZ180|DYNO|RCZ280|MBC|RPH|Z80RETRO|S100|DUO|HEATH|EPITX|MON|STDZ180|NABU|FZ80|MSX]
+CPUFAM		.SET	CPU_Z80		; CPU FAMILY: CPU_[Z80|Z180|Z280|EZ80]
+BIOS		.SET	BIOS_WBW	; HARDWARE BIOS: BIOS_[WBW|UNA]
+BATCOND		.SET	FALSE		; ENABLE LOW BATTERY WARNING MESSAGE
+HBIOS_MUTEX	.SET	FALSE		; ENABLE REENTRANT CALLS TO HBIOS (ADDS OVERHEAD)
+USELZSA2	.SET	FALSE		; ENABLE FONT COMPRESSION
+TICKFREQ	.SET	50		; DESIRED PERIODIC TIMER INTERRUPT FREQUENCY (HZ)
+;
+BOOT_TIMEOUT	.SET	-1		; AUTO BOOT TIMEOUT IN SECONDS, -1 TO DISABLE, 0 FOR IMMEDIATE
+BOOT_DELAY	.SET	0		; FIXED BOOT DELAY IN SECONDS PRIOR TO CONSOLE OUTPUT
+BOOT_PRETTY	.SET	FALSE		; BOOT WITH PRETTY PLATFORM NAME
+BT_REC_TYPE	.SET	BT_REC_NONE	; BOOT RECOVERY METHOD TO USE: BT_REC_[NONE|FORCE|SBCB0|SBC1B|SBCRI|DUORI]
+AUTOCON		.SET	FALSE		; ENABLE CONSOLE TAKEOVER AT LOADER PROMPT
+STRICTPART	.SET	TRUE		; ENFORCE STRICT PARTITION TABLE VALIDATION
+;
+CPUSPDCAP	.SET	SPD_FIXED	; CPU SPEED CHANGE CAPABILITY SPD_FIXED|SPD_HILO
+CPUSPDDEF	.SET	SPD_HIGH	; CPU SPEED DEFAULT SPD_UNSUP|SPD_HIGH|SPD_LOW
+CPUOSC		.SET	3579545		; CPU OSC FREQ IN MHZ
+INTMODE		.SET	1		; INTERRUPTS: 0=NONE, 1=MODE 1, 2=MODE 2, 3=MODE 3 (Z280)
+;
+RAMSIZE		.SET	512-64		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
+ROMSIZE		.SET	0		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
+ROMFONTS	.SET	FALSE		; LOAD FONTS FROM ROM
+APP_BNKS	.SET	$FF		; BANKS TO RESERVE FOR APP USE ($FF FOR AUTO SIZING)
+MEMMGR		.SET	MM_MSX		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH|MON|EZ512|MSX]
+RAMBIAS		.SET	2		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+MPGSEL_0	.SET	$FC		; MEM MGR BANK 0 PAGE SELECT REG (MSX_NOTE: SOME RAM MAPPERS SUPPORT READ)
+MPGSEL_1	.SET	$FD		; MEM MGR BANK 1 PAGE SELECT REG (MSX_NOTE: SOME RAM MAPPERS SUPPORT READ)
+MPGSEL_2	.SET	$FE		; MEM MGR BANK 2 PAGE SELECT REG (MSX_NOTE: SOME RAM MAPPERS SUPPORT READ)
+MPGSEL_3	.SET	$FF		; MEM MGR BANK 3 PAGE SELECT REG (MSX_NOTE: SOME RAM MAPPERS SUPPORT READ)
+;
+RTCIO		.SET	$C0		; RTC LATCH REGISTER ADR
+;
+KIOENABLE	.SET	FALSE		; ENABLE ZILOG KIO SUPPORT
+KIOBASE		.SET	$80		; KIO BASE I/O ADDRESS
+;
+CTCENABLE	.SET	FALSE		; ENABLE ZILOG CTC SUPPORT
+CTCDEBUG	.SET	FALSE		; ENABLE CTC DRIVER DEBUG OUTPUT
+CTCBASE		.SET	$88		; CTC BASE I/O ADDRESS
+CTCTIMER	.SET	FALSE		; ENABLE CTC PERIODIC TIMER
+CTCMODE		.SET	CTCMODE_TIM16	; CTC MODE: CTCMODE_[NONE|CTR|TIM16|TIM256]
+CTCPRE		.SET	256		; PRESCALE CONSTANT (1-256)
+CTCPRECH	.SET	2		; PRESCALE CHANNEL (0-3)
+CTCTIMCH	.SET	3		; TIMER CHANNEL (0-3)
+CTCOSC		.SET	CPUOSC		; CTC CLOCK FREQUENCY
+;
+PCFENABLE	.SET	FALSE		; ENABLE PCF8584 I2C CONTROLLER
+PCFBASE		.SET	$F0		; PCF8584 BASE I/O ADDRESS
+PCFCLK		.SET	PCFCLK_8	; PCF CLOCK BASE: PCFCLK_[3|443|6|8|12]
+PCFTRNS		.SET	PCFTRNS_90	; PCF TRANSFER SPEED: PCFTRNS_[90|45|11|15]
+;
+EIPCENABLE	.SET	FALSE		; EIPC: ENABLE Z80 EIPC (Z84C15) INITIALIZATION
+;
+SKZENABLE	.SET	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
+SKZDIV		.SET	DIV_1		; UART CLK (CLK2) DIVIDER FOR Z80-512K
+;
+WDOGMODE	.SET	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
+WDOGIO		.SET	$6F		; WATCHDOG REGISTER ADR
+;
+FPLED_ENABLE	.SET	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.SET	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_INV	.SET	FALSE		; FP: LED BITS ARE INVERTED
+FPLED_DSKACT	.SET	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.SET	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.SET	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+FPSW_INV	.SET	FALSE		; FP: SWITCH BITS ARE INVERTED
+;
+DIAGLVL		.SET	DL_CRITICAL	; ERROR LEVEL REPORTING
+;
+LEDENABLE	.SET	FALSE		; ENABLES STATUS LED (SINGLE LED)
+LEDMODE		.SET	LEDMODE_STD	; LEDMODE_[STD|SC|RTC|NABU]
+LEDPORT		.SET	$0E		; STATUS LED PORT ADDRESS
+LEDDISKIO	.SET	TRUE		; ENABLES DISK I/O ACTIVITY ON STATUS LED
+;
+DSKYENABLE	.SET	FALSE		; ENABLES DSKY FUNCTIONALITY
+DSKYDSKACT	.SET	TRUE		; ENABLES DISK ACTIVITY ON DSKY DISPLAY
+ICMENABLE	.SET	FALSE		; ENABLES ORIGINAL DSKY ICM DRIVER (7218)
+ICMPPIBASE	.SET	$60		; BASE I/O ADDRESS OF ICM PPI
+PKDENABLE	.SET	FALSE		; ENABLES DSKY NG PKD DRIVER (8259)
+PKDPPIBASE	.SET	$60		; BASE I/O ADDRESS OF PKD PPI
+PKDOSC		.SET	3000000		; OSCILLATOR FREQ FOR PKD (IN HZ)
+H8PENABLE	.SET	FALSE		; ENABLES HEATH H8 FRONT PANEL
+LCDENABLE	.SET	FALSE		; ENABLE LCD DISPLAY
+LCDBASE		.SET	$DA		; BASE I/O ADDRESS OF LCD CONTROLLER
+GM7303ENABLE	.SET	FALSE		; ENABLES THE GM7303 BOARD WITH 16X2 LCD
+;
+BOOTCON		.SET	0		; BOOT CONSOLE DEVICE
+SECCON		.SET	$FF		; SECONDARY CONSOLE DEVICE
+CRTACT		.SET	TRUE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
+VDAEMU		.SET	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+VDAEMU_SERKBD	.SET	$FF		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
+ANSITRACE	.SET	1		; ANSI DRIVER TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPKTRACE	.SET	1		; PPK DRIVER TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+KBDTRACE	.SET	1		; KBD DRIVER TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPKKBLOUT	.SET	KBD_US		; PPK KEYBOARD LANGUAGE: KBD_[US|DE]
+KBDKBLOUT	.SET	KBD_US		; KBD KEYBOARD LANGUAGE: KBD_[US|DE]
+MKYKBLOUT	.SET	KBD_US		; KBD KEYBOARD LANGUAGE: KBD_[US|DE]
+KBDINTS		.SET	FALSE		; ENABLE KBD (PS2) KEYBOARD INTERRUPTS
+;
+DSRTCENABLE	.SET	FALSE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
+DSRTCMODE	.SET	DSRTCMODE_STD	; DSRTC: OPERATING MODE: DSRTCMODE_[STD|MFPIC|K80W]
+DSRTCCHG	.SET	FALSE		; DSRTC: FORCE BATTERY CHARGE ON (USE WITH CAUTION!!!)
+;
+DS1501RTCENABLE	.SET	FALSE		; DS1501RTC: ENABLE DS-1501 CLOCK DRIVER (DS1501RTC.ASM)
+DS1501RTC_BASE	.SET	$50		; DS1501RTC: I/O BASE ADDRESS
+;
+BQRTCENABLE	.SET	FALSE		; BQRTC: ENABLE BQ4845 CLOCK DRIVER (BQRTC.ASM)
+BQRTC_BASE	.SET	$50		; BQRTC: I/O BASE ADDRESS
+;
+INTRTCENABLE	.SET	FALSE		; ENABLE PERIODIC INTERRUPT CLOCK DRIVER (INTRTC.ASM)
+;
+RP5RTCENABLE	.SET	TRUE		; RP5C01 RTC BASED CLOCK (RP5RTC.ASM)
+;
+HTIMENABLE	.SET	FALSE		; ENABLE SIMH TIMER SUPPORT
+SIMRTCENABLE	.SET	FALSE		; ENABLE SIMH CLOCK DRIVER (SIMRTC.ASM)
+;
+DS7RTCENABLE	.SET	FALSE		; DS7RTC: ENABLE DS-1307 I2C CLOCK DRIVER (DS7RTC.ASM)
+DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
+;
+DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
+;
+SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
+SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
+SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
+SSERDATA	.SET	$FF		; SSER: DATA PORT
+SSERIRDY	.SET	%00000001	; SSER: INPUT READY BIT MASK
+SSERIINV	.SET	FALSE		; SSER: INPUT READY BIT INVERTED
+SSERORDY	.SET	%00000010	; SSER: OUTPUT READY BIT MASK
+SSEROINV	.SET	FALSE		; SSER: OUTPUT READY BIT INVERTED
+;
+DUARTENABLE	.SET	FALSE		; DUART: ENABLE 2681/2692 SERIAL DRIVER (DUART.ASM)
+DUARTCNT	.SET	1		; DUART: NUMBER OF CHIPS TO DETECT (1-2)
+DUART0BASE	.SET	$A0		; DUART 0: BASE ADDRESS OF CHIP
+DUART0ACFG	.SET	DEFSERCFG	; DUART 0A: SERIAL LINE CONFIG
+DUART0BCFG	.SET	DEFSERCFG	; DUART 0B: SERIAL LINE CONFIG
+DUART1BASE	.SET	$40		; DUART 1: BASE ADDRESS OF CHIP
+DUART1ACFG	.SET	DEFSERCFG	; DUART 1A: SERIAL LINE CONFIG
+DUART1BCFG	.SET	DEFSERCFG	; DUART 1B: SERIAL LINE CONFIG
+;
+UARTENABLE	.SET	TRUE		; UART: ENABLE 8250/16550-LIKE SERIAL DRIVER (UART.ASM)
+UARTCNT		.SET	2		; UART: NUMBER OF CHIPS TO DETECT (1-8)
+UARTOSC		.SET	1843200		; UART: OSC FREQUENCY IN MHZ
+UARTINTS	.SET	FALSE		; UART: INCLUDE INTERRUPT SUPPORT UNDER IM1/2/3
+UART4UART	.SET	FALSE		; UART: SUPPORT 4UART ECB BOARD
+UART4UARTBASE	.SET	$C0		; UART: BASE IO ADDRESS OF 4UART ECB BOARD
+UART0BASE	.SET	$80		; UART 0: REGISTERS BASE ADR
+UART0CFG	.SET	DEFSERCFG	; UART 0: SERIAL LINE CONFIG
+UART1BASE	.SET	$88		; UART 1: REGISTERS BASE ADR
+UART1CFG	.SET	DEFSERCFG	; UART 1: SERIAL LINE CONFIG
+UART2BASE	.SET	$FF		; UART 2: REGISTERS BASE ADR
+UART2CFG	.SET	DEFSERCFG	; UART 2: SERIAL LINE CONFIG
+UART3BASE	.SET	$FF		; UART 3: REGISTERS BASE ADR
+UART3CFG	.SET	DEFSERCFG	; UART 3: SERIAL LINE CONFIG
+UART4BASE	.SET	$FF		; UART 4: REGISTERS BASE ADR
+UART4CFG	.SET	DEFSERCFG	; UART 4: SERIAL LINE CONFIG
+UART5BASE	.SET	$FF		; UART 5: REGISTERS BASE ADR
+UART5CFG	.SET	DEFSERCFG	; UART 5: SERIAL LINE CONFIG
+UART6BASE	.SET	$FF		; UART 6: REGISTERS BASE ADR
+UART6CFG	.SET	DEFSERCFG	; UART 6: SERIAL LINE CONFIG
+UART7BASE	.SET	$FF		; UART 7: REGISTERS BASE ADR
+UART7CFG	.SET	DEFSERCFG	; UART 7: SERIAL LINE CONFIG
+;
+ASCIENABLE	.SET	FALSE		; ASCI: ENABLE Z180 ASCI SERIAL DRIVER (ASCI.ASM)
+;
+Z2UENABLE	.SET	FALSE		; Z2U: ENABLE Z280 UART SERIAL DRIVER (Z2U.ASM)
+;
+ACIAENABLE	.SET	FALSE		; ACIA: ENABLE MOTOROLA 6850 ACIA DRIVER (ACIA.ASM)
+ACIADEBUG	.SET	FALSE		; ACIA: ENABLE DEBUG OUTPUT
+ACIACNT		.SET	1		; ACIA: NUMBER OF CHIPS TO DETECT (1-2)
+ACIA0BASE	.SET	$80		; ACIA 0: REGISTERS BASE ADR
+ACIA0CLK	.SET	CPUOSC		; ACIA 0: OSC FREQ IN HZ
+ACIA0DIV	.SET	1		; ACIA 0: SERIAL CLOCK DIVIDER
+ACIA0CFG	.SET	DEFSERCFG	; ACIA 0: SERIAL LINE CONFIG  (SEE STD.ASM)
+ACIA1BASE	.SET	$40		; ACIA 1: REGISTERS BASE ADR
+ACIA1CLK	.SET	CPUOSC		; ACIA 1: OSC FREQ IN HZ
+ACIA1DIV	.SET	1		; ACIA 1: SERIAL CLOCK DIVIDER
+ACIA1CFG	.SET	DEFSERCFG	; ACIA 1: SERIAL LINE CONFIG  (SEE STD.ASM)
+;
+SIOENABLE	.SET	FALSE		; SIO: ENABLE ZILOG SIO SERIAL DRIVER (SIO.ASM)
+SIODEBUG	.SET	FALSE		; SIO: ENABLE DEBUG OUTPUT
+SIOBOOT		.SET	0		; SIO: REBOOT ON RCV CHAR (0=DISABLED)
+SIOCNT		.SET	2		; SIO: NUMBER OF CHIPS TO DETECT (1-2), 2 CHANNELS PER CHIP
+SIOINTS		.SET	TRUE		; SIO: INCLUDE SIO INTERRUPT SUPPORT UNDER IM1/2/3
+SIO0MODE	.SET	SIOMODE_RC	; SIO 0: CHIP TYPE: SIOMODE_[STD|RC|SMB|ZP|Z80R]
+SIO0BASE	.SET	$80		; SIO 0: REGISTERS BASE ADR
+SIO0ACLK	.SET	CPUOSC		; SIO 0A: OSC FREQ IN HZ, ZP=2457600/4915200, RC/SMB=7372800
+SIO0ACFG	.SET	DEFSERCFG	; SIO 0A: SERIAL LINE CONFIG
+SIO0ACTCC	.SET	-1		; SIO 0A: CTC CHANNEL 0=A, 1=B, 2=C, 3=D, -1 FOR NONE
+SIO0BCLK	.SET	CPUOSC		; SIO 0B: OSC FREQ IN HZ, ZP=2457600/4915200, RC/SMB=7372800
+SIO0BCFG	.SET	DEFSERCFG	; SIO 0B: SERIAL LINE CONFIG
+SIO0BCTCC	.SET	-1		; SIO 0B: CTC CHANNEL 0=A, 1=B, 2=C, 3=D, -1 FOR NONE
+SIO1MODE	.SET	SIOMODE_RC	; SIO 1: CHIP TYPE: SIOMODE_[STD|RC|SMB|ZP|Z80R]
+SIO1BASE	.SET	$84		; SIO 1: REGISTERS BASE ADR
+SIO1ACLK	.SET	CPUOSC		; SIO 1A: OSC FREQ IN HZ, ZP=2457600/4915200, RC/SMB=7372800
+SIO1ACFG	.SET	DEFSERCFG	; SIO 1A: SERIAL LINE CONFIG
+SIO1ACTCC	.SET	-1		; SIO 1A: CTC CHANNEL 0=A, 1=B, 2=C, 3=D, -1 FOR NONE
+SIO1BCLK	.SET	CPUOSC		; SIO 1B: OSC FREQ IN HZ, ZP=2457600/4915200, RC/SMB=7372800
+SIO1BCFG	.SET	DEFSERCFG	; SIO 1B: SERIAL LINE CONFIG
+SIO1BCTCC	.SET	-1		; SIO 1B: CTC CHANNEL 0=A, 1=B, 2=C, 3=D, -1 FOR NONE
+;
+XIOCFG		.SET	DEFSERCFG	; XIO: SERIAL LINE CONFIG
+;
+VDUENABLE	.SET	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
+CVDUENABLE	.SET	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
+GDCENABLE	.SET	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
+TMSENABLE	.SET	TRUE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
+TMSMODE		.SET	TMSMODE_MSXMKY	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MSX|MSXKBD|MSXMKY|MBC|COLECO|DUO|NABU]
+TMS80COLS	.SET	TRUE		; TMS: ENABLE 80 COLUMN SCREEN, REQUIRES V9938/V9958
+TMSTIMENABLE	.SET	TRUE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
+VGAENABLE	.SET	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
+SCONENABLE	.SET	FALSE		; SCON: ENABLE S100 CONSOLE DRIVER (SCON.ASM)
+EFENABLE	.SET	FALSE		; EF: ENABLE EF9345 VIDEO DRIVER (EF.ASM)
+FVENABLE	.SET	FALSE		; FV: ENABLE FPGA VGA VIDEO DRIVER (FV.ASM)
+;
+MDENABLE	.SET	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
+MDROM		.SET	FALSE		; MD: ENABLE ROM DISK
+MDRAM		.SET	TRUE		; MD: ENABLE RAM DISK
+MDTRACE		.SET	1		; MD: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+MDFFENABLE	.SET	FALSE		; MD: ENABLE FLASH FILE SYSTEM
+;
+FDENABLE	.SET	FALSE		; FD: ENABLE FLOPPY DISK DRIVER (FD.ASM)
+FDMODE		.SET	FDMODE_RCWDC	; FD: DRIVER MODE: FDMODE_[DIO|ZETA|ZETA2|DIDE|N8|DIO3|RCSMC|RCWDC|DYNO|EPFDC|MBC]
+FDCNT		.SET	2		; FD: NUMBER OF FLOPPY DRIVES ON THE INTERFACE (1-2)
+FDTRACE		.SET	1		; FD: TRACE LEVEL (0=NO,1=FATAL,2=ERRORS,3=ALL)
+FDMAUTO		.SET	TRUE		; FD: AUTO SELECT DEFAULT/ALTERNATE MEDIA FORMATS
+FD0TYPE		.SET	FDT_3HD		; FD 0: DRIVE TYPE: FDT_[3DD|3HD|5DD|5HD|8]
+FD1TYPE		.SET	FDT_3HD		; FD 1: DRIVE TYPE: FDT_[3DD|3HD|5DD|5HD|8]
+;
+RFENABLE	.SET	FALSE		; RF: ENABLE RAM FLOPPY DRIVER
+;
+IDEENABLE	.SET	TRUE		; IDE: ENABLE IDE DISK DRIVER (IDE.ASM)
+IDETRACE	.SET	1		; IDE: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+IDECNT		.SET	1		; IDE: NUMBER OF IDE INTERFACES TO DETECT (1-3), 2 DRIVES EACH
+IDE0MODE	.SET	IDEMODE_RC	; IDE 0: DRIVER MODE: IDEMODE_[DIO|DIDE|MK4|RC|GIDE]
+IDE0BASE	.SET	$10		; IDE 0: IO BASE ADDRESS
+IDE0DATLO	.SET	$00		; IDE 0: DATA LO PORT FOR 16-BIT I/O
+IDE0DATHI	.SET	$00		; IDE 0: DATA HI PORT FOR 16-BIT I/O
+IDE0A8BIT	.SET	TRUE		; IDE 0A (MASTER): 8 BIT XFER
+IDE0B8BIT	.SET	TRUE		; IDE 0B (MASTER): 8 BIT XFER
+IDE1MODE	.SET	IDEMODE_RC	; IDE 1: DRIVER MODE: IDEMODE_[DIO|DIDE|MK4|RC|GIDE]
+IDE1BASE	.SET	$18		; IDE 1: IO BASE ADDRESS
+IDE1DATLO	.SET	$00		; IDE 1: DATA LO PORT FOR 16-BIT I/O
+IDE1DATHI	.SET	$00		; IDE 1: DATA HI PORT FOR 16-BIT I/O
+IDE1A8BIT	.SET	TRUE		; IDE 1A (MASTER): 8 BIT XFER
+IDE1B8BIT	.SET	TRUE		; IDE 1B (MASTER): 8 BIT XFER
+IDE2MODE	.SET	IDEMODE_RC	; IDE 2: DRIVER MODE: IDEMODE_[DIO|DIDE|MK4|RC|GIDE]
+IDE2BASE	.SET	$20		; IDE 2: IO BASE ADDRESS
+IDE2DATLO	.SET	$00		; IDE 2: DATA LO PORT FOR 16-BIT I/O
+IDE2DATHI	.SET	$00		; IDE 2: DATA HI PORT FOR 16-BIT I/O
+IDE2A8BIT	.SET	TRUE		; IDE 2A (MASTER): 8 BIT XFER
+IDE2B8BIT	.SET	TRUE		; IDE 2B (MASTER): 8 BIT XFER
+;
+PPIDEENABLE	.SET	TRUE		; PPIDE: ENABLE PARALLEL PORT IDE DISK DRIVER (PPIDE.ASM)
+PPIDETRACE	.SET	1		; PPIDE: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPIDECNT	.SET	1		; PPIDE: NUMBER OF PPI CHIPS TO DETECT (1-3), 2 DRIVES PER CHIP
+PPIDE0MODE	.SET	PPIDEMODE_MSX	; PPIDE 0: DRIVER MODE: IDEMODE_[STD|S100A|S100B|MSX]
+PPIDE0BASE	.SET	$30		; PPIDE 0: PPI REGISTERS BASE ADR
+PPIDE0A8BIT	.SET	FALSE		; PPIDE 0A (MASTER): 8 BIT XFER
+PPIDE0B8BIT	.SET	FALSE		; PPIDE 0B (SLAVE): 8 BIT XFER
+PPIDE1MODE	.SET	PPIDEMODE_MSX	; PPIDE 1: DRIVER MODE: IDEMODE_[STD|S100A|S100B|MSX]
+PPIDE1BASE	.SET	$00		; PPIDE 1: PPI REGISTERS BASE ADR
+PPIDE1A8BIT	.SET	FALSE		; PPIDE 1A (MASTER): 8 BIT XFER
+PPIDE1B8BIT	.SET	FALSE		; PPIDE 0B (SLAVE): 8 BIT XFER
+PPIDE2MODE	.SET	PPIDEMODE_MSX	; PPIDE 2: DRIVER MODE: IDEMODE_[STD|S100A|S100B|MSX]
+PPIDE2BASE	.SET	$00		; PPIDE 2: PPI REGISTERS BASE ADR
+PPIDE2A8BIT	.SET	FALSE		; PPIDE 2A (MASTER): 8 BIT XFER
+PPIDE2B8BIT	.SET	FALSE		; PPIDE 2B (SLAVE): 8 BIT XFER
+;
+SDENABLE	.SET	FALSE		; SD: ENABLE SD CARD DISK DRIVER (SD.ASM)
+SDMODE		.SET	SDMODE_PIO	; SD: DRIVER MODE: SDMODE_[JUHA|N8|CSIO|PPI|UART|DSD|MK4|SC|MT|USR|PIO|Z80R|EPITX|FZ80|GM|EZ512|K80W]
+SDPPIBASE	.SET	$60		; SD: BASE I/O ADDRESS OF PPI FOR PPI MODDE
+SDCNT		.SET	2		; SD: NUMBER OF SD CARD DEVICES (1-2), FOR DSD/SC/MT ONLY
+SDTRACE		.SET	1		; SD: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+SDCSIOFAST	.SET	FALSE		; SD: ENABLE TABLE-DRIVEN BIT INVERTER IN CSIO MODE
+SDMTSWAP	.SET	FALSE		; SD: SWAP THE LOGICAL ORDER OF THE SPI PORTS OF THE MT011
+;
+CHENABLE	.SET	FALSE		; CH: ENABLE CH375/376 USB SUPPORT
+CHTRACE		.SET	1		; CH: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+CHUSBTRACE	.SET	1		; CHUSB: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+CHSDTRACE	.SET	1		; CHSD: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+CHCNT		.SET	2		; CH: NUMBER OF BOARDS TO DETECT (1-2)
+CH0BASE		.SET	$3E		; CH 0: BASE I/O ADDRESS
+CH0USBENABLE	.SET	TRUE		; CH 0: ENABLE USB DISK
+CH0SDENABLE	.SET	FALSE		; CH 0: ENABLE SD DISK
+CH1BASE		.SET	$3C		; CH 1: BASE I/O ADDRESS
+CH1USBENABLE	.SET	TRUE		; CH 1: ENABLE USB DISK
+CH1SDENABLE	.SET	FALSE		; CH 1: ENABLE SD DISK
+;
+PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
+;
+PPPENABLE	.SET	FALSE		; PPP: ENABLE ZETA PARALLEL PORT PROPELLER BOARD DRIVER (PPP.ASM)
+;
+ESPENABLE	.SET	FALSE		; ESP: ENABLE ESP32 IO BOARD DRIVER (ESP.ASM)
+;
+HDSKENABLE	.SET	FALSE		; HDSK: ENABLE SIMH HDSK DISK DRIVER (HDSK.ASM)
+;
+PIOENABLE	.SET	FALSE		; PIO: ENABLE ZILOG PIO DRIVER (PIO.ASM)
+PIOCNT		.SET	2		; PIO: NUMBER OF CHIPS TO DETECT (1-2), 2 CHANNELS PER CHIP
+PIO0BASE	.SET	$B8		; PIO 0: REGISTERS BASE ADR
+PIO1BASE	.SET	$BC		; PIO 1: REGISTERS BASE ADR
+;
+LPTENABLE	.SET	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTMODE		.SET	LPTMODE_MG014	; LPT: DRIVER MODE: LPTMODE_[NONE|SPP|MG014]
+LPTCNT		.SET	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
+LPTTRACE	.SET	1		; LPT: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+LPT0BASE	.SET	$90		; LPT 0: REGISTERS BASE ADR
+LPT1BASE	.SET	$00		; LPT 1: REGISTERS BASE ADR
+;
+PPAENABLE	.SET	FALSE		; PPA: ENABLE IOMEGA ZIP DRIVE (PPA) DISK DRIVER (PPA.ASM)
+PPACNT		.SET	1		; PPA: NUMBER OF PPA DEVICES (1-2)
+PPATRACE	.SET	1		; PPA: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPAMODE		.SET	PPAMODE_MG014	; PPA: DRIVER MODE: PPAMODE_[NONE|SPP|MG014]
+PPA0BASE	.SET	LPT0BASE	; PPA 0: BASE I/O ADDRESS OF PPI FOR PPA
+PPA1BASE	.SET	LPT1BASE	; PPA 1: BASE I/O ADDRESS OF PPI FOR PPA
+;
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IOMEGA ZIP PLUS DRIVE (IMM) DISK DRIVER (IMM.ASM)
+IMMCNT		.SET	1		; IMM: NUMBER OF IMM DEVICES (1-2)
+IMMTRACE	.SET	1		; IMM: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+IMMMODE		.SET	IMMMODE_MG014	; IMM: DRIVER MODE: IMMMODE_[NONE|SPP|MG014]
+IMM0BASE	.SET	LPT0BASE	; IMM 0: BASE I/O ADDRESS OF PPI FOR IMM
+IMM1BASE	.SET	LPT1BASE	; IMM 1: BASE I/O ADDRESS OF PPI FOR IMM
+;
+SYQENABLE	.SET	FALSE		; SYQ: ENABLE SYQUEST SPARQ DISK DRIVER (SYQ.ASM)
+SYQCNT		.SET	1		; SYQ: NUMBER OF SYQ DEVICES (1-2)
+SYQTRACE	.SET	1		; SYQ: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+SYQMODE		.SET	IMMMODE_MG014	; SYQ: DRIVER MODE: SYQMODE_[NONE|SPP|MG014]
+SYQ0BASE	.SET	LPT0BASE	; SYQ 0: BASE I/O ADDRESS OF PPI FOR SYQ
+SYQ1BASE	.SET	LPT1BASE	; SYQ 1: BASE I/O ADDRESS OF PPI FOR SYQ
+;
+ESPSDENABLE	.SET	FALSE		; ESPSD: ENABLE S100 ESP32 SD DISK DRIVER (ESPSD.ASM)
+;
+PIO_4P		.SET	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
+PIO_ZP		.SET	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)
+PIO_SBC		.SET	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR 8255 CHIP
+;
+UFENABLE	.SET	FALSE		; UF: ENABLE ECB USB FIFO DRIVER (UF.ASM)
+;
+SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
+AUDIOTRACE	.SET	FALSE		; ENABLE TRACING TO CONSOLE OF SOUND DRIVER
+SN7CLK		.SET	3579545		; SN: PSG CLOCK FREQ, ASSUME MSX STD
+SNMODE		.SET	SNMODE_RC	; SN: DRIVER MODE: SNMODE_[NONE|RC|VGM|DUO]
+;
+AY38910ENABLE	.SET	TRUE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
+AY_CLK		.SET	1789772		; AY: PSG CLOCK FREQ, ASSUME MSX STD
+AYMODE		.SET	AYMODE_MSX	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
+;
+SPKENABLE	.SET	FALSE		; SPK: ENABLE RTC LATCH IOBIT SOUND DRIVER (SPK.ASM)
+;
+DMAENABLE	.SET	FALSE		; DMA: ENABLE DMA DRIVER (DMA.ASM)
+DMABASE		.SET	$E0		; DMA: DMA BASE ADDRESS
+DMAMODE		.SET	DMAMODE_RC	; DMA: DMA MODE (NONE|ECB|Z180|Z280|RC|MBC|DUO)
+;
+YM2612ENABLE	.SET	FALSE		; YM2612: ENABLE YM2612 DRIVER
+VGMBASE		.SET	$C0		; YM2612: BASE ADDRESS FOR VGM BOARD (YM2612/SN76489s/CTC)

Source/HBIOS/hbios.asm

@@ -49,13 +49,14 @@
 ; - std.asm
 ;   - ../ver.inc
 ;   - build.inc
-;     - Config/<plt>_std.asm
+;     - Config/<plt>_<cfg>.asm
 ;       - cfg_<plt>.asm
 ;         - cfg_MASTER.asm
 ;           - hbios.inc
 ;   - [z180.inc]
 ;   - [z280.inc]
 ;   - [eipc.inc]
+;   - layout.inc
 ; - util.asm
 ; - time.asm
 ; - bcd.asm
@@ -941,8 +942,23 @@ Z280_SYSCALL_GO:
 ;
 #IF (MEMMGR == MM_SZ80)
 ;
-; 1MB OF RAM IN 16K PAGES.  STARTS AT 4TH 16K PAGE AND WRAPS AROUND
-; BECAUSE PAGE 2 & 3 ARE FIXED TO HIGH 32K OF CPU ADDRESS SPACE.
+; The S100 Z80 CPU implements a custom memory manager that allows mapping the 2
+; lowest 16K portions of CPU address space ($0000-$3FFFF, and $4000-$7FFF).
+; Each of these banks can be mapped to any physical 16K bank.
+; The physical 16K banks are 16K aligned.  The memory manager
+; can address a maximum of 1MB of physical memory.  Which is
+; 64 x 16K banks (bank numbers $00-$3F)
+; 
+; The top 32K of CPU address space ($8000-$FFFF) is statically mapped
+; to physical banks $02 & $03.  RomWBW is designed to have the top
+; 32K of CPU address space assigned to the last two banks of
+; RAM.  So the RomWBW memory manager for this board (MM_SZ80)
+; rotates the requested bank numbers by 4.  With wrapping, this
+; causes a RomWBW request for the top two banks to be mapped to
+; physical banks $02 & $03.
+; 
+; Z80 CPU Physical:  $00 $01 $02 $03 ... $38 $39 $3A $3B $3C $3D $3E $3F
+; RomWBW Logical:    $04 $05 $06 $07 ... $3C $3D $3E $3F $00 $01 $02 $03
 ;
 	BIT	7,A			; BIT 7 SET REQUESTS RAM PAGE
 	JR	Z,HBX_ROM		; NOT SET, SELECT ROM PAGE
@@ -960,6 +976,17 @@ HBX_ROM:
 	RET				; DONE
 #ENDIF
 ;
+#IF (MEMMGR == MM_MSX)
+	; MSX_NOTE: THE MSX PLATFORM PRELOADS THE ROM IMAGE IN RAM AND THE BANK ID ROM/RAM FLAG IS IGNORED
+	RES	7,A			; CLEAR RAM BIT
+	ADD	A,RAMBIAS		; ADD 2 x 32K - RAM STARTS FROM 16K SEGMENT 4
+	RLCA				; TIMES 2 - GET 16K PAGE INSTEAD OF 32K
+	OUT	(MPGSEL_0),A		; BANK_0: 0K - 16K
+	INC	A			;
+	OUT	(MPGSEL_1),A		; BANK_1: 16K - 32K
+	RET				; DONE
+#ENDIF
+;
 ;::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
 ; Copy Data - Possibly between banks.  This resembles CP/M 3, but
 ;  usage of the HL and DE registers is reversed.
@@ -1376,8 +1403,8 @@ HBX_BUF_END	.EQU	$
 	JP	HBX_BNKSEL		; (+19) HB_BNKSEL: FIXED ADR ENTRY FOR HBX_BNKSEL
 	JP	HBX_BNKCPY		; (+22) HB_BNKCPY: FIXED ADR ENTRY FOR HBX_BNKCPY
 	JP	HBX_BNKCALL		; (+25) HB_BNKCALL: FIXED ADR ENTRY FOR HBX_BNKCALL
-	.DW	HBX_IDENT		; (+28) ADDRESS OF HBIOS PROXY START (DEPRECATED)
-	.DW	HBX_IDENT		; (+30) HB_IDENT: ADDRESS OF HBIOS IDENT INFO DATA BLOCK
+	.DW	HBX_IDENT		; (+28) HB_IDENT: ADDRESS OF HBIOS IDENT INFO DATA BLOCK
+	.DW	HBX_IDENT		; (+30) RESERVED (USED BY MSX PLATFORM), SET TO HBX_IDENT FOR BACKWARD COMPATIBILITY
 ;
 	.FILL	MEMTOP - $		; FILL TO END OF MEMORY (AS NEEDED)
 	.ORG	HBX_IMG + HBX_SIZ	; RESTORE ORG
@@ -1891,7 +1918,13 @@ ROMRESUME:
   #ENDIF
 ;
 #ENDIF
-
+;
+#IF (MEMMGR == MM_MSX)
+	LD	A,((ROMSIZE + RAMSIZE) / 16) - 2 + RAMBIAS * 2
+	OUT	(MPGSEL_2),A
+	INC	A
+	OUT	(MPGSEL_3),A
+#ENDIF
 ;
 ;--------------------------------------------------------------------------------------------------
 ; PROXY INSTALLATION
@@ -1930,7 +1963,12 @@ ROMRESUME:
 ;
 	LD	DE,HBX_LOC		; RUNNING LOCATION OF PROXY
 	LD	HL,HBX_IMG		; LOCATION OF PROXY IMAGE
+#IF (PLATFORM == PLT_MSX)
+	; MSX_NOTE: AVOID WRITING TO SECONDARY SLOT REGISTER AT ADDRESS $FFFF
+	LD	BC,HBX_SIZ-2		; SIZE OF PROXY
+#ELSE
 	LD	BC,HBX_SIZ		; SIZE OF PROXY
+#ENDIF
 	LDIR				; COPY IT
 ;
 ; NOTIFICATION THAT WE HAVE COMPLETED HARDWARE INIT.
@@ -3296,6 +3334,9 @@ HB_Z280BUS1:
 #ENDIF
 #IF (MEMMGR == MM_SZ80)
 	.TEXT	"SZ80$"
+#ENDIF
+#IF (MEMMGR == MM_MSX)
+	.TEXT	"MSX$"
 #ENDIF
 	CALL	PRTSTRD
 	.TEXT	" MMU$"

Source/HBIOS/hbios.inc

@@ -209,6 +209,7 @@ PLT_GMZ180	.EQU	21		; GENESIS Z180 SYSTEM
 PLT_NABU	.EQU	22		; NABU PC W/ ROMWBW OPTION BOARD
 PLT_SZ80	.EQU	23		; S100 Z80
 PLT_RCEZ80	.EQU	24		; RCBUS W/ eZ80
+PLT_MSX		.EQU	25		; MSX COMPUTER
 ;
 ; HBIOS GLOBAL ERROR RETURN VALUES
 ;
@@ -554,5 +555,4 @@ HB_INVOKE	.EQU	HBX_XFCFNS + (0 * 3)	; INVOKE HBIOS FUNCTION
 HB_BNKSEL	.EQU	HBX_XFCFNS + (1 * 3)	; SELECT LOW MEMORY BANK ID
 HB_BNKCPY	.EQU	HBX_XFCFNS + (2 * 3)	; INTERBANK MEMORY COPY
 HB_BNKCALL	.EQU	HBX_XFCFNS + (3 * 3)	; INTERBANK FUNCTION CALL
-;HB_LOC		.EQU	HBX_XFCFNS + 12		; ADDRESS OF HBIOS PROXY START (DEPRECATED)
-HB_IDENT	.EQU	HBX_XFCFNS + 14		; POINTER TO HBIOS IDENT DATA BLOCK
+HB_IDENT	.EQU	HBX_XFCFNS + 12		; POINTER TO HBIOS IDENT DATA BLOCK

Source/HBIOS/layout.inc

@@ -60,7 +60,7 @@ CPM_IMGSIZ	.EQU	$3000			; CPM IMAGE SIZE ON ROM
 ;--------------------------------------------------------------------------------------------------
 ;
 BNK_NXTLOC	.EQU	$0000			; RESET TO START OF BANK
-BNK_CUR		.EQU	1			; THIS IS ROM BANK 1 (BID_IMG0)
+BNK_CUR		.EQU	0			; BANK OFFSET FROM BID_IMG0
 ;
 LDR_BNK		.EQU	BNK_CUR
 LDR_LOC		.EQU	$0000			; RUNNING LOCATION OF BOOT LOADER
@@ -103,7 +103,7 @@ BNK1_SLACK	.EQU	BNKTOP - BNK_NXTLOC	; REMAINING BANK SPACE
 ;--------------------------------------------------------------------------------------------------
 ;
 BNK_NXTLOC	.SET	$0000			; RESET TO START OF BANK
-BNK_CUR		.SET	2			; THIS IS ROM BANK 2 (BID_IMG1)
+BNK_CUR		.SET	1			; BANK OFFSET FROM BID_IMG0
 ;
 ; NOTE FOLLOWING ARE COPY/PASTED INTO camel80.azm !!!!!!!!
 FTH_BNK		.EQU	BNK_CUR
@@ -178,7 +178,7 @@ BNK2_SLACK	.EQU	BNKTOP - BNK_NXTLOC	; REMAINING BANK SPACE
 ;--------------------------------------------------------------------------------------------------
 ;
 BNK_NXTLOC	.SET	$0000			; RESET TO START OF BANK
-BNK_CUR		.SET	3			; THIS IS ROM BANK 3 (BID_IMG2)
+BNK_CUR		.SET	2			; BANK OFFSET FROM BID_IMG0
 ;
 HWMON_BNK	.EQU	BNK_CUR
 HWMON_LOC	.EQU	$E000

Source/HBIOS/mky.asm

@@ -205,6 +205,9 @@ MKY_INIT:
 #ENDIF
 #ENDIF
 
+; MSX_NOTE: THE MSX BIOS SETS THE PPI CONFIGURATION AT BOOT AND IT SHOULD NOT BE CHANGED
+; THE 8255 CONFIGURATION BELOW IS NOT COMPATIBLE WITH THE MSX STANDARD
+#IF (PLATFORM != PLT_MSX)
 	; CONFIGURE 8255 PPI PORTS
 	; A - INPUT (NOT USED)
 	; B - INPUT (COLUMN LINES)
@@ -216,6 +219,7 @@ MKY_INIT:
 	LD	A, 64			; CAPS OFF
 	EZ80_IO
 	OUT	(MKY_REGC), A
+#ENDIF
 
 	; INSTALL INTERRUPT HANDLER
 	LD	HL, (VEC_TICK+1)

Source/HBIOS/ppide.asm

@@ -30,11 +30,32 @@ PPIDE_DIR_WRITE	.EQU	%10000000	; IDE BUS DATA OUTPUT MODE
 PPIDE_CTL_DA0	.EQU	%00000001	; DRIVE ADDRESS BUS - BIT 0 (DA0)
 PPIDE_CTL_DA1	.EQU	%00000010	; DRIVE ADDRESS BUS - BIT 1 (DA1)
 PPIDE_CTL_DA2	.EQU	%00000100	; DRIVE ADDRESS BUS - BIT 2 (DA2)
+;
+; MSX_NOTE: 
+; CONTROL SIGNALS ARE NOT INVERTED, CS3 and DRIVE RESET SIGNALS NOT IMPLEMENTED
+; SETTING THE DIRECTION OF THE PORTS WILL RESET THE OUTPUT PORTS I.E. CONTROL SIGNALS
+; PPI IDE CONTROL BIT:
+; 0	IDE REGISTER BIT 0
+; 1	IDE REGISTER BIT 1
+; 2	IDE REGISTER BIT 2
+; 3	NOT USED
+; 4	NOT USED
+; 5	/CS SELECT
+; 6	/WR WRITE DATA
+; 7	/RD READ DATA
+; 
+#IF (PPIDE0MODE == PPIDEMODE_MSX)
+PPIDE_CTL_CS1	.EQU	%11000000	; DRIVE CHIP SELECT 0 (ACTIVE LOW)
+PPIDE_CTL_DIOW	.EQU	%01000000	; DRIVE I/O WRITE (ACTIVE LOW)
+PPIDE_CTL_DIOR	.EQU	%10000000	; DRIVE I/O READ (ACTIVE LOW)
+PPIDE_IDLE	.EQU	%11100111	; SET DRIVE IN IDLE STATE
+#ELSE
 PPIDE_CTL_CS1	.EQU	%00001000	; DRIVE CHIP SELECT 0 (ACTIVE LOW, INVERTED)
 PPIDE_CTL_CS3	.EQU	%00010000	; DRIVE CHIP SELECT 1 (ACTIVE LOW, INVERTED)
 PPIDE_CTL_DIOW	.EQU	%00100000	; DRIVE I/O WRITE (ACTIVE LOW, INVERTED)
 PPIDE_CTL_DIOR	.EQU	%01000000	; DRIVE I/O READ (ACTIVE LOW, INVERTED)
 PPIDE_CTL_RESET	.EQU	%10000000	; DRIVE RESET (ACTIVE LOW, INVERTED)
+#ENDIF
 ;
 ;	+-----------------------------------------------------------------------+
 ;	| CONTROL BLOCK REGISTERS (CS3FX)					|
@@ -140,9 +161,11 @@ PPIDE_REG_BCL		.EQU	PPIDE_CTL_CS1 | $04	; PKT BYTE COUNT LOW (BITS 0-7) (R/W)
 PPIDE_REG_BCH		.EQU	PPIDE_CTL_CS1 | $05	; PKT BYTE COUNT HIGH (BITS 8-15) (R/W)
 PPIDE_REG_STAT		.EQU	PPIDE_CTL_CS1 | $07	; STATUS REGISTER (R)
 PPIDE_REG_CMD		.EQU	PPIDE_CTL_CS1 | $07	; COMMAND REGISTER (EXECUTE) (W)
+#IF (PPIDE0MODE != PPIDEMODE_MSX)
 PPIDE_REG_ALTSTAT	.EQU	PPIDE_CTL_CS3 | $06	; ALTERNATE STATUS REGISTER (R)
 PPIDE_REG_CTRL		.EQU	PPIDE_CTL_CS3 | $06	; DEVICE CONTROL REGISTER (W)
 PPIDE_REG_DRVADR	.EQU	PPIDE_CTL_CS3 | $07	; DRIVE ADDRESS REGISTER (R)
+#ENDIF
 ;
 ; COMMAND BYTES
 ;
@@ -244,6 +267,9 @@ PPIDE_DEV0M:	; DEVICE 0, MASTER
   #ENDIF
   #IF (PPIDE0MODE == PPIDEMODE_S100B)
 	DEVECHO	"S100B"
+  #ENDIF
+  #IF (PPIDE0MODE == PPIDEMODE_MSX)
+	DEVECHO	"MSX_BEER"
   #ENDIF
 	DEVECHO	", IO="
 	DEVECHO	PPIDE0BASE
@@ -253,7 +279,11 @@ PPIDE_DEV0M:	; DEVICE 0, MASTER
 PPIDE_DEV0S:	; DEVICE 0, SLAVE
 	.DB	$FE			; DRIVER DEVICE NUMBER (FILLED DYNAMICALLY)
 	.DB	PPIDE0MODE		; DRIVER DEVICE MODE
+  #IF (PPIDE0MODE == PPIDEMODE_MSX)
+	.DB	PPIDE_STNOMEDIA		; SLAVE UNIT NOT SUPPORTED
+  #ELSE
 	.DB	0			; DEVICE STATUS
+  #ENDIF
 	.DB	0			; DEVICE TYPE
 	.DB	(PPIDE0B8BIT & PPIDE_ACC_8BIT)	; UNIT ACCESS FLAGS
 	.DB	0			; MEDIA FLAGS
@@ -277,14 +307,18 @@ PPIDE_DEV0S:	; DEVICE 0, SLAVE
   #IF (PPIDE0MODE == PPIDEMODE_S100B)
 	DEVECHO	"S100B"
   #ENDIF
+  #IF (PPIDE0MODE == PPIDEMODE_MSX)
+	DEVECHO	"MSX_BEER, NO SLAVE\n"
+  #ELSE
 	DEVECHO	", IO="
 	DEVECHO	PPIDE0BASE
 	DEVECHO	", SLAVE"
 	DEVECHO	"\n"
+  #ENDIF
 ;
 #ENDIF
 ;
-#IF (PPIDECNT >= 2)
+#IF (PPIDECNT >= 2) & (PPIDE1MODE != PPIDEMODE_MSX)
 ;
 PPIDE_DEV1M:	; DEVICE 1, MASTER
 	.DB	$FE			; DRIVER DEVICE NUMBER (FILLED DYNAMICALLY)
@@ -352,7 +386,7 @@ PPIDE_DEV1S:	; DEVICE 1, SLAVE
 ;
 #ENDIF
 ;
-#IF (PPIDECNT >= 3)
+#IF (PPIDECNT >= 3) & (PPIDE2MODE != PPIDEMODE_MSX)
 ;
 PPIDE_DEV2M:	; DEVICE 2, MASTER
 	.DB	$FE			; DRIVER DEVICE NUMBER (FILLED DYNAMICALLY)
@@ -500,10 +534,13 @@ PPIDE_INIT2B:
 PPIDE_INIT3:
 	CALL	PPIDE_RESET		; RESET THE BUS
 	CALL	PPIDE_INIT5		; DETECT/INIT MASTER
+; MSX_NOTE: SLAVE UNIT NOT SUPPORTED
+#IF (PPIDE0MODE != PPIDEMODE_MSX)
 	PUSH	IY			; SAVE CFG PTR
 	CALL	PPIDE_GOPARTNER		; SWITCH IY TO PARTNER CFG
 	CALL	PPIDE_INIT5		; DETECT/INIT SLAVE
 	POP	IY			; RESTORE CFG PTR
+#ENDIF
 ;
 PPIDE_INIT4:
 	LD	DE,PPIDE_CFGSIZ		; SIZE OF CFG TABLE ENTRY
@@ -584,6 +621,13 @@ PPIDE_DETECT:
 	; WE ARE IN WRITE MODE, AN IDE CONTROLLER WILL NOT BE ABLE TO
 	; INTERFERE WITH THE VALUE BEING READ.
 ;
+#IF (PPIDE0MODE == PPIDEMODE_MSX)
+	; SETTING THE DIRECTION WILL RESET THE CONTROL SIGNALS
+	LD	A,$A5
+	CALL	PPIDE_OUT		; USE THE CORRECT SIGNAL SEQUENCE
+	.DB	PPIDE_REG_DATA
+	LD	C,(IY+PPIDE_DATALO)	; PPI PORT A, DATALO
+#ELSE
 	LD	A,PPIDE_DIR_WRITE	; SET DATA BUS DIRECTION TO WRITE
 	LD	C,(IY+PPIDE_PPI)	; PPI CONTROL WORD
 	EZ80_IO
@@ -593,6 +637,7 @@ PPIDE_DETECT:
 	LD	A,$A5			; TEST VALUE
 	EZ80_IO
 	OUT	(C),A			; PUSH VALUE TO PORT
+#ENDIF
 	EZ80_IO
 	IN	A,(C)			; GET PORT VALUE
 #IF (PPIDETRACE >= 3)
@@ -1221,6 +1266,15 @@ PPIDE_GET:
 	PRTS(" GET$")
 #ENDIF
 ;
+#IF (PPIDE0MODE == PPIDEMODE_MSX)
+	; FIRST SETUP THE PPI TO READ THEN WAIT FOR BUFFER
+	;
+	; SETUP PPI TO READ
+	LD	A,PPIDE_DIR_READ	; SET DATA BUS DIRECTION TO READ
+	LD	C,(IY+PPIDE_PPI)	; PPI CONTROL WORD
+	EZ80_IO
+	OUT	(C),A			; WRITE IT
+	;
 	; WAIT FOR BUFFER
 	PUSH	BC
 	PUSH	HL
@@ -1228,13 +1282,22 @@ PPIDE_GET:
 	POP	HL
 	POP	BC
 	RET	NZ			; BAIL OUT IF TIMEOUT
-;
+#ELSE
+	; WAIT FOR BUFFER
+	PUSH	BC
+	PUSH	HL
+	CALL	PPIDE_WAITDRQ		; WAIT FOR BUFFER READY
+	POP	HL
+	POP	BC
+	RET	NZ			; BAIL OUT IF TIMEOUT
+	;
 	; SETUP PPI TO READ
 	LD	A,PPIDE_DIR_READ	; SET DATA BUS DIRECTION TO READ
 	;OUT	(PPIDE_REG_PPI),A	; DO IT
 	LD	C,(IY+PPIDE_PPI)	; PPI CONTROL WORD
 	EZ80_IO
 	OUT	(C),A			; WRITE IT
+#ENDIF
 ;
 	; SELECT READ/WRITE IDE REGISTER
 	LD	A,PPIDE_REG_DATA	; DATA REGISTER
@@ -1319,6 +1382,25 @@ PPIDE_PUT:
 	PRTS(" PUT$")
 #ENDIF
 ;
+#IF (PPIDE0MODE == PPIDEMODE_MSX)
+	; SETTING THE DIRECTION WILL RESET THE CONTROL SIGNALS
+	; THE WORKAROUND FOR WRITE IS TO USE A SMALL DELAY INSTEAD OF WAITING FOR BUFFER READY
+	;
+	; SETUP PPI TO WRITE
+	LD	A,PPIDE_DIR_WRITE	; SET DATA BUS DIRECTION TO WRITE
+	LD	C,(IY+PPIDE_PPI)	; PPI CONTROL WORD
+	EZ80_IO
+	OUT	(C),A			; WRITE IT
+	;
+	; SMALL DELAY FOR BUFFER READY
+	PUSH	BC
+	LD	B,$30
+WR_WAIT:
+	EX	(SP),HL
+	EX	(SP),HL
+	DJNZ	WR_WAIT
+	POP	BC
+#ELSE
 	; WAIT FOR BUFFER
 	PUSH	BC
 	PUSH	HL
@@ -1326,13 +1408,14 @@ PPIDE_PUT:
 	POP	HL
 	POP	BC
 	RET	NZ			; BAIL OUT IF TIMEOUT
-;
+	;
 	; SETUP PPI TO WRITE
 	LD	A,PPIDE_DIR_WRITE	; SET DATA BUS DIRECTION TO WRITE
 	;OUT	(PPIDE_REG_PPI),A	; DO IT
 	LD	C,(IY+PPIDE_PPI)	; PPI CONTROL WORD
 	EZ80_IO
 	OUT	(C),A			; WRITE IT
+#ENDIF
 ;
 	; SELECT READ/WRITE IDE REGISTER
 	LD	A,PPIDE_REG_DATA	; DATA REGISTER
@@ -1341,7 +1424,7 @@ PPIDE_PUT:
 	EZ80_IO
 	OUT	(C),A			; DO IT
 	LD	E,A			; E := WRITE UNASSERTED
-	XOR	PPIDE_CTL_DIOW		; SWAP THE READ LINE BIT
+	XOR	PPIDE_CTL_DIOW		; SWAP THE WRITE LINE BIT
 	LD	D,A			; D := WRITE ASSERTED
 ;
 	; LOOP SETUP
@@ -1448,6 +1531,12 @@ PPIDE_RESET:
 	LD	C,(IY+PPIDE_PPI)	; PPI CONTROL WORD
 	EZ80_IO
 	OUT	(C),A			; WRITE IT
+#IF (PPIDE0MODE == PPIDEMODE_MSX)
+	; SET DRIVE TO IDLE 
+	LD	A,PPIDE_IDLE
+	DEC	C
+	OUT	(C),A
+#ENDIF
 ;
 ; IF A DSKYNG IS ACTIVE AND IS ON THE SAME PPI PORT AS THE PPIDE BEING
 ; RESET, THEN THE DSKYNG WILL ALSO BE RESET.  SO, THE RESET CODE IS
@@ -1473,6 +1562,9 @@ PPIDE_RESET_PKD1:
 #IF (PPIDETRACE >= 3)
 	PRTS(" HARD$")
 #ENDIF
+;
+; MSX_NOTE: RESET SIGNAL NOT IMPLEMENTED, /RESET OF PPI 8255 IS CONNECTED TO Z80 BUS /RESET
+#IF (PPIDE0MODE != PPIDEMODE_MSX)
 	LD	A,PPIDE_CTL_RESET
 	;OUT	(PPIDE_REG_CTL),A
 	LD	C,(IY+PPIDE_CTL)	; SET IDE ADDRESS
@@ -1543,6 +1635,8 @@ PPIDE_RESET3:
 	LD	DE,20			; DELAY 320US (SPEC IS >= 25US)
 	CALL	VDELAY
 ;
+#ENDIF ; PPIDEMODE_MSX
+;
 PPIDE_RESET5:
 	LD	HL,PPIDE_TONORM		; NORMAL TIMEOUT NOW
 	LD	(PPIDE_TIMEOUT),HL	; AND RESTORE IT
@@ -1555,8 +1649,11 @@ PPIDE_RESET5:
 	BIT	0,(IY+PPIDE_ACC)	; MASTER?
 	CALL	Z,PPIDE_GOPARTNER	; IF NOT, SWITCH TO MASTER
 	CALL	PPIDE_INITUNIT		; INIT CURRENT UNIT
+; MSX_NOTE: SLAVE UNIT NOT SUPPORTED
+#IF (PPIDE0MODE != PPIDEMODE_MSX)
 	CALL	PPIDE_GOPARTNER		; POINT TO SLAVE
 	CALL	PPIDE_INITUNIT		; INIT PARTNER UNIT
+#ENDIF
 	POP	IY			; RECOVER ORIG CFG PTR
 ;
 	XOR	A			; SIGNAL SUCCESS
@@ -2053,7 +2150,11 @@ PPIDE_IN:
 	DEC	C			; SET IDE ADDRESS			; 4TS
 	EZ80_IO
 	OUT	(C),B			; SET ADDRESS LINES			; 12TS
+  #IF (PPIDE0MODE == PPIDEMODE_MSX)
+	RES	7,B			; CLEAR /READ BIT (READ ON)
+  #ELSE
 	SET	6,B			; TURN ON READ BIT			; 8TS
+  #ENDIF
 	EZ80_IO
 	OUT	(C),B			; ASSERT READ LINE			; 12TS
 ;
@@ -2065,7 +2166,11 @@ PPIDE_IN:
 	INC	C								; 4TS
 	INC	C								; 4TS
 ;
+  #IF (PPIDE0MODE == PPIDEMODE_MSX)
+	LD	B,PPIDE_IDLE		; SET DRIVE TO IDLE (READ OFF)
+  #ELSE
 	RES	6,B			; CLEAR READ BIT			; 8TS
+  #ENDIF
 	EZ80_IO
 	OUT	(C),B			; DEASSERT READ LINE			; 12TS
 	POP	BC			; RECOVER INCOMING BC			; 10TS
@@ -2093,10 +2198,24 @@ PPIDE_OUT:
 	DEC	C			; SET IDE ADDRESS
 	EZ80_IO
 	OUT	(C),B			; SET ADDRESS LINES
+;
+#IF (PPIDE0MODE == PPIDEMODE_MSX)
+	; FIRST SEND DATA VALUE THEN ASSERT WRITE LINE
+	DEC	C
+	DEC	C
+	EZ80_IO
+	OUT	(C),A			; SEND DATA VALUE TO DEVICE
+	INC	C
+	INC	C
+	RES	6,B			; CLEAR /WRITE BIT (WRITE ON)
+	EZ80_IO
+	OUT	(C),B
+	LD	B,PPIDE_IDLE		; SET DRIVE TO IDLE (WRITE OFF)
+#ELSE
 	SET	5,B			; TURN ON WRITE BIT
 	EZ80_IO
 	OUT	(C),B			; ASSERT WRITE LINE
-;
+	;
 	DEC	C
 	DEC	C
 	;OUT	(PPIDE_REG_DATALO),A	; SEND DATA VALUE TO DEVICE
@@ -2104,8 +2223,9 @@ PPIDE_OUT:
 	OUT	(C),A			; SEND DATA VALUE TO DEVICE
 	INC	C
 	INC	C
-;
+	;
 	RES	5,B			; CLEAR WRITE BIT
+#ENDIF
 	EZ80_IO
 	OUT	(C),B			; DEASSERT WRITE LINE
 	POP	BC			; RECOVER INCOMING BC

Source/HBIOS/romldr.asm

@@ -1144,7 +1144,10 @@ romcopy:
 	cp	bid_cur			; special value?
 	jr	nz,romcopy1		; if not, continue
 	ld	a,(bid_ldr)		; else substitute
+	jr	romcopy2		; and continue
 romcopy1:
+	add	a,BID_IMG0		; add to start of image banks
+romcopy2:
 	push	af			; save source bank
 	;
 	ld	e,a			; source bank to E
@@ -2695,8 +2698,11 @@ ra_ent		.equ	12
 ; *_SIZ *_END and any code generated which does not include LAYOUT.INC is
 ; synced.
 ;
-; Note: The loadable ROM images are placed in ROM banks BID_IMG0 and
-; BID_IMG1.  However, RomWBW supports a mechanism to load a complete
+; Note: The loadable ROM images are placed in ROM banks starting with
+; BID_IMG0.  The bank numbers below are an offset from BID_IMG0 because
+; the actual bank id of BID_IMG0 varies per system.
+;
+; RomWBW supports a mechanism to load a complete
 ; new system dynamically as a runnable application (see appboot
 ; in hbios.asm).  In this case, the contents of BID_IMG0 will
 ; be pre-loaded into the currently executing ram bank thereby allowing
@@ -2705,48 +2711,48 @@ ra_ent		.equ	12
 ; normally found in BID_IMG0.  This special value will cause
 ; the associated image to be loaded from the currently executing bank
 ; which will be correct regardless of the load mode.  Images in other
-; banks (BID_IMG1) will always be loaded directly from ROM.
+; image banks (BID_IMG1).
 ;
 ra_tbl:
 ;
-;      Name	  Key	   Dsky	  Bank	     Src	   Dest	    Size     Entry
-;      ---------  -------  -----  --------   -----         -------  -------  ----------
-ra_ent(str_mon,	  'M',	   KY_CL, MON_BNK,   MON_IMGLOC,   MON_LOC, MON_SIZ, MON_SERIAL)
+;	Name		Key		Dsky		Bank		Src		Dest		Size		Entry
+;	---------	------		-----		--------	-----		------- 	------- 	----------
+ra_ent(str_mon,		'M',		KY_CL,		MON_BNK,	MON_IMGLOC,	MON_LOC,	MON_SIZ,	MON_SERIAL)
 ra_entsiz	.equ	$ - ra_tbl
 #if (BIOS == BIOS_WBW)
   #if (PLATFORM == PLT_S100)
-ra_ent(str_smon,  'O',	   $FF,	  bid_cur,   $8000,        $8000,   $0001,   s100mon)
+ra_ent(str_smon,	'O',		$FF,		bid_cur,	$8000,		$8000,		$0001,		s100mon)
   #endif
 #endif
-ra_ent(str_cpm22, 'C',	   KY_BK, CPM22_BNK, CPM22_IMGLOC, CPM_LOC, CPM_SIZ, CPM_ENT)
-ra_ent(str_zsys,  'Z',	   KY_FW, ZSYS_BNK,  ZSYS_IMGLOC,  CPM_LOC, CPM_SIZ, CPM_ENT)
+ra_ent(str_cpm22,	'C',		KY_BK,		CPM22_BNK,	CPM22_IMGLOC,	CPM_LOC,	CPM_SIZ,	CPM_ENT)
+ra_ent(str_zsys,	'Z',		KY_FW,		ZSYS_BNK,	ZSYS_IMGLOC,	CPM_LOC,	CPM_SIZ,	CPM_ENT)
 #if (BIOS == BIOS_WBW)
-ra_ent(str_bas,	  'B',	   KY_DE, BAS_BNK,   BAS_IMGLOC,   BAS_LOC, BAS_SIZ, BAS_LOC)
-ra_ent(str_tbas,  'T',	   KY_EN, TBC_BNK,   TBC_IMGLOC,   TBC_LOC, TBC_SIZ, TBC_LOC)
-ra_ent(str_fth,	  'F',	   KY_EX, FTH_BNK,   FTH_IMGLOC,   FTH_LOC, FTH_SIZ, FTH_LOC)
-ra_ent(str_play,  'P',	   $FF,	  GAM_BNK,   GAM_IMGLOC,   GAM_LOC, GAM_SIZ, GAM_LOC)
-ra_ent(str_net,   'N'+$80, $FF,	  NET_BNK,   NET_IMGLOC,   NET_LOC, NET_SIZ, NET_LOC)
-ra_ent(str_upd,   'X',	   $FF,	  UPD_BNK,   UPD_IMGLOC,   UPD_LOC, UPD_SIZ, UPD_LOC)
-ra_ent(str_blnk,  'W'+$80, $FF,	  NVR_BNK,   NVR_IMGLOC,   NVR_LOC, NVR_SIZ, NVR_LOC)
-ra_ent(str_blnk,  'D'+$80, $FF,	  DEV_BNK,   DEV_IMGLOC,   DEV_LOC, DEV_SIZ, DEV_LOC)
-ra_ent(str_blnk,  'S'+$80, $FF,	  SLC_BNK,   SLC_IMGLOC,   SLC_LOC, SLC_SIZ, SLC_LOC)
-ra_ent(str_user,  'U',	   $FF,	  USR_BNK,   USR_IMGLOC,   USR_LOC, USR_SIZ, USR_LOC)
+ra_ent(str_bas,		'B',		KY_DE,		BAS_BNK,	BAS_IMGLOC,	BAS_LOC,	BAS_SIZ,	BAS_LOC)
+ra_ent(str_tbas,	'T',		KY_EN,		TBC_BNK,	TBC_IMGLOC,	TBC_LOC,	TBC_SIZ,	TBC_LOC)
+ra_ent(str_fth,		'F',		KY_EX,		FTH_BNK,	FTH_IMGLOC,	FTH_LOC,	FTH_SIZ,	FTH_LOC)
+ra_ent(str_play,	'P',		$FF,		GAM_BNK,	GAM_IMGLOC,	GAM_LOC,	GAM_SIZ,	GAM_LOC)
+ra_ent(str_net,		'N'+$80,	$FF,		NET_BNK,	NET_IMGLOC,	NET_LOC,	NET_SIZ,	NET_LOC)
+ra_ent(str_upd,		'X',		$FF,		UPD_BNK,	UPD_IMGLOC,	UPD_LOC,	UPD_SIZ,	UPD_LOC)
+ra_ent(str_blnk,	'W'+$80,	$FF,		NVR_BNK,	NVR_IMGLOC,	NVR_LOC,	NVR_SIZ,	NVR_LOC)
+ra_ent(str_blnk,	'D'+$80,	$FF,		DEV_BNK,	DEV_IMGLOC,	DEV_LOC,	DEV_SIZ,	DEV_LOC)
+ra_ent(str_blnk,	'S'+$80,	$FF,		SLC_BNK,	SLC_IMGLOC,	SLC_LOC,	SLC_SIZ,	SLC_LOC)
+ra_ent(str_user,	'U',		$FF,		USR_BNK,	USR_IMGLOC,	USR_LOC,	USR_SIZ,	USR_LOC)
 #endif
 #if (DSKYENABLE)
-ra_ent(str_dsky,  'Y'+$80, KY_GO, MON_BNK,   MON_IMGLOC,   MON_LOC, MON_SIZ, MON_DSKY)
+ra_ent(str_dsky,	'Y'+$80,	KY_GO,		MON_BNK,	MON_IMGLOC,	MON_LOC,	MON_SIZ,	MON_DSKY)
 #endif
-ra_ent(str_blnk,  'E'+$80, $FF,   EGG_BNK,   EGG_IMGLOC,   EGG_LOC, EGG_SIZ, EGG_LOC)
+ra_ent(str_blnk,	'E'+$80,	$FF,		EGG_BNK,	EGG_IMGLOC,	EGG_LOC,	EGG_SIZ,	EGG_LOC)
 ;
 		.dw	0		; table terminator
 ;
 ra_tbl_app:
 ;
-;      Name	  Key	   Dsky	  Bank	    Src	         Dest	    Size     Entry
-;      ---------  -------  -----  --------  -----       -------  -------  ----------
-ra_ent(str_mon,	  'M',	   KY_CL, bid_cur,  MON_IMGLOC,  MON_LOC, MON_SIZ, MON_SERIAL)
-ra_ent(str_zsys,  'Z',	   KY_FW, bid_cur,  ZSYS_IMGLOC, CPM_LOC, CPM_SIZ, CPM_ENT)
+;	Name		Key		Dsky		Bank		Src		Dest		Size		Entry
+;	---------	------		-----		--------	-----		------- 	------- 	----------
+ra_ent(str_mon,		'M',		KY_CL,		bid_cur,	MON_IMGLOC,	MON_LOC,	MON_SIZ,	MON_SERIAL)
+ra_ent(str_zsys,	'Z',		KY_FW,		bid_cur,	ZSYS_IMGLOC,	CPM_LOC,	CPM_SIZ,	CPM_ENT)
 #if (DSKYENABLE)
-ra_ent(str_dsky,  'Y'+$80, KY_GO, bid_cur,  MON_IMGLOC,  MON_LOC, MON_SIZ, MON_DSKY)
+ra_ent(str_dsky,	'Y'+$80,	KY_GO,		bid_cur,	MON_IMGLOC,	MON_LOC,	MON_SIZ,	MON_DSKY)
 #endif
 ;
 		.dw	0		; table terminator

Source/HBIOS/std.asm

@@ -26,6 +26,7 @@
 ; 22. NABU	NABU w/ Les Bird's RomWBW Option Board
 ; 23. SZ80	S100 Computers Z80
 ; 24. RCEZ80	RCBus eZ80
+; 25. MSX	MSX Computers
 ;
 ;
 ; INCLUDE BUILD VERSION
@@ -99,6 +100,7 @@ MM_RPH		.EQU	8		; Z180 WITH RPH EXTENSIONS
 MM_MON		.EQU	9		; MONSPUTER MMU (DEPRECATED)
 MM_EZ512	.EQU	10		; EZ512 BANK SWITCHING
 MM_SZ80		.EQU	11		; S100 Z80 CPU ONBAORD MEMORY MANAGER
+MM_MSX		.EQU	12		; MSX RAM MAPPER MEMORY MANAGER
 ;
 ; BOOT STYLE
 ;
@@ -225,6 +227,7 @@ PPIDEMODE_NONE	.EQU	0
 PPIDEMODE_STD	.EQU	1		; STANDARD
 PPIDEMODE_S100A	.EQU	2		; S100 PRIMARY INTERFACE
 PPIDEMODE_S100B	.EQU	3		; S100 SECONDARY INTERFACE
+PPIDEMODE_MSX	.EQU	4		; MSX BEER IDE INTERFACE
 ;
 ; SD MODE SELECTIONS
 ;

Source/HBIOS/sysconf.asm

@@ -51,7 +51,7 @@ cmdmax		.EQU	$20		; Max cmd input length
 stksiz		.EQU	$40		; Working stack size
 restart		.EQU	$0000		; CP/M restart vector
 bdos		.EQU	$0005		; BDOS invocation vector
-ident		.EQU	$FFFE		; loc of RomWBW HBIOS ident ptr
+ident		.EQU	$FFFC		; loc of RomWBW HBIOS ident ptr
 ;
 ETX		.EQU	3		; CTRL-C
 BEL		.EQU	7		; ASCII bell

Source/HBIOS/tms.asm

@@ -209,11 +209,15 @@ USBKYBENABLE	.SET	TRUE		; INCLUDE USB KEYBOARD SUPPORT
   #DEFINE	TMS_IODELAY	EX (SP),HL \ EX (SP),HL	; 38 W/S
   ;#DEFINE	TMS_IODELAY	NOP \ NOP \ NOP \ NOP \ NOP ; 20 W/S ### JLC Mod for Clock/2 (9 MHz) ###
 #ELSE
-  ; BELOW WAS TUNED FOR Z80 AT 8MHZ
-  #IF (TMS80COLS)
-    #DEFINE	TMS_IODELAY	NOP \ NOP \ NOP \ NOP \ NOP \ NOP \ NOP ; V9958 NEEDS AT WORST CASE, APPROX 4us (28T) DELAY BETWEEN I/O (WHEN IN TEXT MODE)
+  #IF (PLATFORM == PLT_MSX)
+    #DEFINE	TMS_IODELAY	EX (SP),HL \ EX (SP),HL
   #ELSE
-    #DEFINE	TMS_IODELAY	NOP \ NOP ; 8 W/S
+    ; BELOW WAS TUNED FOR Z80 AT 8MHZ
+    #IF (TMS80COLS)
+      #DEFINE	TMS_IODELAY	NOP \ NOP \ NOP \ NOP \ NOP \ NOP \ NOP ; V9958 NEEDS AT WORST CASE, APPROX 4us (28T) DELAY BETWEEN I/O (WHEN IN TEXT MODE)
+    #ELSE
+      #DEFINE	TMS_IODELAY	NOP \ NOP ; 8 W/S
+    #ENDIF
   #ENDIF
 #ENDIF
 ;

Source/MSX/Build.cmd

@@ -0,0 +1,18 @@
+@echo off
+setlocal
+
+::
+:: Build MSX loader
+::
+
+set TOOLS=../../Tools
+
+set PATH=%TOOLS%\tasm32;%TOOLS%\zxcc;%PATH%
+
+set TASMTABS=%TOOLS%\tasm32
+
+set CPMDIR80=%TOOLS%/cpm/
+
+tasm -t80 -g3 msx-ldr.asm msx-ldr.com msx-ldr.lst || exit /b
+
+if exist msx-ldr.com copy msx-ldr.com ..\..\Binary\ || exit /b

Source/MSX/Clean.cmd

@@ -0,0 +1,10 @@
+@echo off
+setlocal
+
+if exist *.bin del *.bin
+if exist *.lst del *.lst
+if exist *.prn del *.prn
+if exist *.hex del *.hex
+if exist *.rel del *.rel
+if exist *.sym del *.sym
+if exist *.com del *.com

Source/MSX/Makefile

@@ -0,0 +1,8 @@
+OBJECTS = msx-ldr.com
+DEST = ../../Binary
+TOOLS = ../../Tools
+include $(TOOLS)/Makefile.inc
+
+msx-ldr.com: msx-ldr.asm 
+	$(TASM) $< $@ msx-ldr.lst
+	cp msx-ldr.com $(DEST)/msx-ldr.com

Source/MSX/msx-ldr.asm

@@ -0,0 +1,254 @@
+; ------------------------------------------------------------------------------
+; msx-ldr.asm
+; MSX RomWBW loader, requires 512KB or more RAM mapper
+; ------------------------------------------------------------------------------
+
+; The loader assumes following entry conditions:
+; + RAM mapper slot is selected on all 4 pages
+; + Segments 0 to 3 are in use for the DOS TPA
+; + The last 2 segments may be in use for MSX-DOS 2 code + data
+
+ROMWBW_SEG	.equ	4			; RomWBW boot segment
+
+CHGCPU		.equ	$0180			; changes CPU mode
+P2_SEG  	.equ     $f2c9	          	; current segment page 2 (MSX-DOS 2)
+CSRSW		.equ	$fca9			; cursor on/off flag
+H_TIMI		.equ	$fd9f			; timer interrupt hook (vdp vsync)
+ 
+; ------------------------------------------------------------------------------
+		
+		.ORG	$100
+
+		; copy loader to page 3 and run it there
+		ld	hl,LSTART
+		ld	de,$c000
+		ld	bc,LSIZE
+		ldir
+		jp	$c000
+
+LSTART:
+		
+; ------------------------------------------------------------------------------
+
+		.ORG	$c000
+
+		; open ROM image file (fcb)
+		ld	de,romfile
+		ld	c,$0f			; FOPEN
+		call	5
+		or	a			; error opening file?
+		jp	nz,error_open		; nz=yes
+		
+		; get filesize, determine number of ram segments to load
+		ld	a,(romfile+$12)		; rom image size / 64k bytes
+		rlca				; number of banks
+		rlca				; number of segments
+		ld	(nsegs),a
+		
+		; determine ram mapper size
+		call	MapperSize
+		or	a
+		jp	z,error_noram
+		
+		; mapper segments > nsegs + 5?
+		ld	a,(nsegs)
+		add	a,5
+		sub	b
+		jp	nc,error_ramsize
+		
+		ld	de,t_message
+		ld	c,$09			; STROUT
+		call	5
+		
+		; init fcb file read: set recordsize and disk transfer address 
+		ld	hl,$0400		; use 1K blocks
+		ld	(romfile+$0e),hl
+		ld	de,$8000
+		ld	c,$1a			; SETDTA
+		call	5
+
+		; cursor off
+		xor	a
+		ld	(CSRSW),a		
+		
+		; preload RomWBW rom into RAM Mapper segments
+		ld	a,(nsegs)
+		ld	b,a			; number of segment to load
+		ld	a,4			; starting segment
+		
+load_bank:	push	af
+		push	bc
+		ld	e,$0d			; set cursor to beginning of line
+		ld	c,$02			; CONOUT
+		call	5
+		pop	bc			; reload segment number
+
+		push	bc
+		ld	a,b
+		call	dspNumA
+		pop	bc
+		pop	af			; reload segment number
+		
+		out	($fe),a			; select ram segment in page 2
+		ld	(P2_SEG),a		; update system variable segment 2 (MSX-DOS 2)
+		inc	a
+		
+		; read rom bank data from file
+		push	af
+		push	bc
+		ld	hl,16			; read 16K data
+		ld	de,romfile
+		ld	c,$27			; RDBLK
+		call	5
+		or	a			; error reading file?
+		jp	nz,error_read		; nz=yes
+		pop	bc
+		pop	af
+	
+		; next rom bank
+		djnz	load_bank
+		
+		; it's not necessary to close the file
+		
+		; call H.TIMI 256 times to motor off floppy drives
+		di
+		xor	a
+mtcount:	call	H_TIMI			; H.TIMI handler saves register AF
+		dec	a
+		jr	nz,mtcount
+
+		; set CPU to Z80 mode
+		ld	a,(CHGCPU)
+		cp	$c3
+		ld	a,$80			; set Z80 mode + switch Turbo LED indicator
+		call	z,CHGCPU		
+
+		; select RomWBW bootloader bank and start RomWBW
+		ld	a,ROMWBW_SEG
+		out	($fc),a
+		inc	a
+		out	($fd),a
+		jp	$0
+		
+; ---------------------------------------------------------------------------
+; dspNumA - routine to display a value in A in ascii characters
+; ---------------------------------------------------------------------------
+dspNumA:	ld	l,a
+		ld	h,0
+		;ld	bc,-100
+		;call	num1
+		ld	bc,-10
+		call	num1
+		ld	bc,-01
+num1:		ld	a,'0'-1
+num2:		inc	a
+		add	hl,bc
+		jr	c,num2
+		sbc	hl,bc
+		push	hl
+		ld	e,a
+		ld	c,$02			; CONOUT
+		call	5
+		pop	hl
+		ret
+		
+; ---------------------------------------------------------------------------
+; Determine if a RAM mapper is available and what size it is
+; Output: a = number of RAM mapper segments
+; ---------------------------------------------------------------------------
+MapperSize:	ld	hl,$8000
+		; pass 1: test write/read segment 0
+		ld	a,1
+		out	($fe),a			; set page 2 to segment 1
+		ld	b,(hl)			; save byte 1
+		ld	(hl),$aa		; write test value AA in segment 1
+		xor	a
+		out	($fe),a			; set page 2 to segment 0
+		ld	c,(hl)			; save byte 0
+		ld	(hl),$55		; write test value 55 in segment 0
+		inc	a
+		out	($fe),a			; set page 2 to segment 1
+		ld	e,(hl)			; read test byte 1 in E
+		xor	a
+		out	($fe),a			; set page 2 to segment 0
+		ld	(hl),c			; restore byte 0
+		inc	a
+		out	($fe),a			; set page 2 to segment 1
+		ld	(hl),b			; restore byte 1
+		ld	a,e			; AA=mapper 55=no mapper
+		cp	$aa			; is mapper?
+		ld	b,$00			; set RAM segments to 0
+		jr	nz,_restore2		; nz=no mapper
+		; pass 2: write test byte to all segments
+_testpass2:	ld	a,b
+		out	($fe),a
+		ld	a,(hl)
+		push	af			; save byte on stack
+		inc	sp			; "
+		ld	(hl),$aa
+		inc	b
+		jr	nz,_testpass2
+		; pass 3: determine number of valid ram segments
+_testpass3:	ld	a,b
+		out	($fe),a
+		ld	a,(hl)
+		cp	$aa			; valid ram segment?
+		jr	nz,_restore		; nz=no
+		ld	a,$55
+		ld	(hl),a
+		cp	(hl)			; 2nd test ok?
+		jr	nz,_restore		; nz=no
+		inc	b
+		jr	nz,_testpass3
+		dec	b			; maximum segment number is 255
+		; restore data saved on stack for each segment
+_restore:	ld	c,$00
+_restore1:	ld	a,c
+		dec	a
+		out	($fe),a
+		dec	sp			; load byte on stack
+		pop	af			; "
+		ld	(hl),a
+		dec	c
+		jr	nz,_restore1
+		; restore/set ram segment 1 in page 2
+_restore2:	ld	a,$01
+		out	($fe),a
+		ld	a,b
+		ret
+		
+		
+; ---------------------------------------------------------
+; Handle errors reading rom file
+; ---------------------------------------------------------
+error_open:	ld	de,t_open
+		jr	error_end
+
+error_read:	pop	bc
+		pop	af
+		ld	de,t_read
+		jr	error_end
+		
+error_noram:	ld	de,t_noram
+		jr	error_end
+		
+error_ramsize:	ld	de,t_ramsize
+
+error_end:	ld	c,$09			; STROUT
+		call	5
+		jp	0			; end program
+		
+t_message:	.db	"Loading RomWBW for MSX...",13,10,"$"
+t_open:		.db	"Error opening msx-std.rom file$"
+t_noram:	.db	"Error: no RAM mapper memory detected$"
+t_ramsize:	.db	"Error: not enough RAM mapper memory$"
+t_read:		.db	$0a,"Error reading msx-std.rom file$"
+nsegs:		.db	0			; number of segments
+romfile:	.db	0,"MSX-STD ","ROM"	; fcb file
+		.fill	25,0			; fcb variables
+
+; ------------------------------------------------------------------------------
+
+LSIZE		.EQU	$-$c000
+
+		.END

Source/MSX/readme.md

@@ -0,0 +1,10 @@
+# RomWBW loader for MSX
+
+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.
+
+The "MSX_std.rom" image must be copied to "MSX-STD.ROM" on the MSX disk media together with "MSX-LDR.COM".
+
+
+

Source/Makefile

@@ -2,12 +2,12 @@
 # order is actually important, because of build dependencies
 #
 
-.PHONY: doc prop shared bp images rom zrc z1rcc zzrcc zrc512 sz80 ez512
+.PHONY: doc prop shared bp images rom zrc z1rcc zzrcc zrc512 sz80 ez512 msx
 
 .ONESHELL:
 .SHELLFLAGS = -ce
 
-all: prop shared bp images rom zrc z1rcc zzrcc zrc512 sz80 ez512
+all: prop shared bp images rom zrc z1rcc zzrcc zrc512 sz80 ez512 msx
 
 doc:
 	$(MAKE) --directory Doc $(ACTION)
@@ -59,6 +59,10 @@ sz80:
 ez512:
 	$(MAKE) --directory EZ512 $(ACTION)
 
+msx:
+	$(MAKE) --directory MSX $(ACTION)
+
+
 clean: ACTION=clean
 clean: all
 

Source/SZ80/Bank Layout.txt

@@ -1,9 +1,17 @@
-S100 Z80 has no real ROM.  It has 1024K RAM.
+S100 Z80 CPU
+============
+
+S100 Z80 has only a small monitor ROM at the to of CPU address space
+which is not utilized by RomWBW.  RomWBW treats the system as a
+ROMless system.  RAM is provided by a separate board.  RomWBW assumes
+the RAM board has >= 1024K which is the maximum RAM supported by the
+Z80 CPU memory manager.
 
 The ROMless startup mode treats the entire 1024KB as RAM.  128KB of RAM 
 must be preloaded by the Monitor CF Loader.  There will be no ROM 
-disk available under RomWBW.  There will be a RAM Disk and it's initial 
-contents will be seeded by the image loaded by the CF Loader.
+disk available under RomWBW.
+
+The RomWBW 32K bank layout is as follows:
 
 Bank		Contents	Description
 --------	--------	-----------
@@ -11,19 +19,50 @@ Bank		Contents	Description
 0x1		IMG0		ROM Loader, Monitor, ROM OSes
 0x2		IMG1		ROM Applications
 0x3		IMG2		Reserved
-0x4-0x1B	RAMD		RAM Disk Banks
+0x4-0xF		RAMD		RAM Disk Banks
+0x10-1B		APP		Application Banks
 0x1C		BUF		OS Buffers (CP/M3)
 0x1D		AUX		Aux Bank (CP/M 3, BPBIOS, etc.)
 0x1E		USR		User Bank (CP/M TPA, etc.)
 0x1F		COM		Common Bank, Upper 32KB
 
+Memory Manager
+--------------
 
-FPGA Z80 has no real ROM.  It has a single 512K RAM chip.
+The Z80 CPU implements a custom memory manager that allows mapping the 2
+lowest 16K portions of CPU address space ($0000-$3FFFF, and $4000-$7FFF).
+Each of these banks can be mapped to any physical 16K bank.
+The physical 16K banks are 16K aligned.  The memory manager
+can address a maximum of 1MB of physical memory.  Which is
+64 x 16K banks (bank numbers $00-$3F)
+
+The top 32K of CPU address space ($8000-$FFFF) is statically mapped
+to physical banks $02 & $03.  RomWBW is designed to have the top
+32K of CPU address space assigned to the last two banks of
+RAM.  So the RomWBW memory manager for this board (MM_SZ80)
+rotates the requested bank numbers by 4.  With wrapping, this
+causes a RomWBW request for the top two banks to be mapped to
+physical banks $02 & $03.
+
+Z80 CPU Physical:  00 01 02 03 ... 38 39 3A 3B 3C 3D 3E 3F
+RomWBW Logical:    04 05 06 07 ... 3C 3D 3E 3F 00 01 02 03
+
+As a result, the Z80 CPU Monitor loads RomWBW starting at
+physical bank 04.
+
+
+S100 FPGA Z80 SBC
+=================
+
+FPGA Z80 has no real ROM.  It has a single onboard 512K RAM chip.
+
+RomWBW assumes the use of the T35 FPGA with associated firmware.
 
 The ROMless startup mode treats the entire 512KB as RAM.  384KB of RAM 
 must be preloaded by the FPGA Monitor CF Loader.  There will be no ROM 
-disk available under RomWBW.  There will be a RAM Disk and it's initial 
-contents will be seeded by the image loaded by the CF Loader.
+disk available under RomWBW.
+
+The RomWBW 32K bank layout is as follows:
 
 Bank		Contents	Description
 --------	--------	-----------
@@ -36,3 +75,8 @@ Bank		Contents	Description
 0xD		AUX		Aux Bank (CP/M 3, BPBIOS, etc.)
 0xE		USR		User Bank (CP/M TPA, etc.)
 0xF		COM		Common Bank, Upper 32KB
+
+Memory Manager
+--------------
+
+The T35 FPGA Z80 implements the Zeta 2 (Z2) memory manager.

Source/SZ80/Build.cmd

@@ -16,7 +16,7 @@ echo.
 
 srec_cat -generate 0x0 0x100000 --constant 0x00 -o temp.dat -binary
 srec_cat temp.dat -binary -exclude 0x1B8 0x200 sz80_ptbl.bin -binary -offset 0x1B8 -o temp.dat -binary
-srec_cat temp.dat -binary -exclude 0x80000 0xE0000 ..\..\Binary\%1.rom -binary -offset 0x80000 -o temp.dat -binary
+srec_cat temp.dat -binary -exclude 0x80000 0xA0000 ..\..\Binary\%1.upd -binary -offset 0x80000 -o temp.dat -binary
 move temp.dat ..\..\Binary\%1_hd1k_prefix.dat
 
 copy /b ..\..\Binary\%1_hd1k_prefix.dat + ..\..\Binary\hd1k_cpm22.img + ..\..\Binary\hd1k_zsdos.img + ..\..\Binary\hd1k_nzcom.img + ..\..\Binary\hd1k_cpm3.img + ..\..\Binary\hd1k_zpm3.img + ..\..\Binary\hd1k_ws4.img ..\..\Binary\%1_hd1k_combo.img || exit /b

Source/SZ80/Makefile

@@ -3,8 +3,8 @@ DEST=../../Binary
 HD1KIMGS = $(DEST)/hd1k_cpm22.img $(DEST)/hd1k_zsdos.img $(DEST)/hd1k_nzcom.img \
 	$(DEST)/hd1k_cpm3.img $(DEST)/hd1k_zpm3.img $(DEST)/hd1k_ws4.img
 
-ROMS := $(wildcard $(DEST)/SZ80_*.rom)
-ROMS := $(patsubst $(DEST)/%.rom,%,$(ROMS))
+ROMS := $(wildcard $(DEST)/SZ80_*.upd)
+ROMS := $(patsubst $(DEST)/%.upd,%,$(ROMS))
 
 OBJECTS := $(patsubst %,%_hd1k_prefix.dat,$(ROMS))
 OBJECTS += $(patsubst %,%_hd1k_combo.img,$(ROMS))
@@ -15,10 +15,10 @@ include $(TOOLS)/Makefile.inc
 
 DIFFPATH = $(DIFFTO)/Binary
 
-%_hd1k_prefix.dat: $(DEST)/%.rom
+%_hd1k_prefix.dat: $(DEST)/%.upd
 	srec_cat -generate 0x0 0x100000 --constant 0x00 -o temp.dat -binary
 	srec_cat temp.dat -binary -exclude 0x1B8 0x200 sz80_ptbl.bin -binary -offset 0x1B8 -o temp.dat -binary
-	srec_cat temp.dat -binary -exclude 0x80000 0xE0000 $< -binary -offset 0x80000 -o temp.dat -binary
+	srec_cat temp.dat -binary -exclude 0x80000 0xA0000 $< -binary -offset 0x80000 -o temp.dat -binary
 	mv temp.dat $@
 
 %_hd1k_combo.img: %_hd1k_prefix.dat  $(HD1KIMGS)

Source/SZ80/SZ80 Disk Layout.txt

@@ -1,4 +1,4 @@
-FZ80 Disk Prefix Layout
+SZ80 Disk Prefix Layout
 =======================
 
 ---- Bytes ----   --- Sectors ---
@@ -13,7 +13,7 @@ Start   Length    Start   Length    Description
 Notes
 -----
 
-- Z80 Monitor reads 384KB (RomWBW) from sectors 1024-1791 of CF into first 384KB of physical RAM
-- Z80 Monitor maps first 32KB of physical RAM to first 32KB of CPU RAM and starts execution at 0x0000
+- Z80 Monitor reads 128KB (RomWBW) from sectors 1024-1279 of CF into first 128KB of RAM
+- Z80 Monitor maps first 16KB of physical RAM to first 32KB of CPU RAM and starts execution at 0x0000
 
--- WBW 3:18 PM 6/30/2024
+-- WBW 10:07 AM 9/23/2025

Source/ver.inc

@@ -2,7 +2,7 @@
 #DEFINE	RMN	6
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.6.0-dev.26"
+#DEFINE BIOSVER	"3.6.0-dev.30"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP

Source/ver.lib

@@ -3,5 +3,5 @@ rmn	equ	6
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.6.0-dev.26"
+	db	"3.6.0-dev.30"
 	endm