Floppy Fix

- Recent change to device type id's broke floppy access.  This is corrected.

Doc/ChangeLog.txt

@@ -1,3 +1,8 @@
+Version 3.4
+-----------
+NOTE: Changes require HBIOS/CBIOS/Apps sync, version bump to 3.4 to ensure integrity
+- WBW: Device type number moved from upper nibble to full byte
+
 Version 3.3
 -----------
 - WBW: Support Front Panel switches

Makefile

@@ -1,5 +1,11 @@
-all:
+.PHONY: tools source clean clobber diff dist
+
+all: tools source
+
+tools:
 	$(MAKE) --directory Tools
+
+source:
 	$(MAKE) --directory Source
 
 clean:

ReadMe.md

@@ -1,9 +1,9 @@
 
 
 **RomWBW ReadMe** \
-Version 3.3 \
+Version 3.4 \
 Wayne Warthen  ([wwarthen@gmail.com](mailto:wwarthen@gmail.com)) \
-14 Sep 2023
+06 Oct 2023
 
 # Overview
 

ReadMe.txt

@@ -1,6 +1,6 @@
 RomWBW ReadMe
 Wayne Warthen (wwarthen@gmail.com)
-14 Sep 2023
+06 Oct 2023
 
 
 

Source/Apps/assign.asm

@@ -1066,10 +1066,6 @@ drvmap1:	; loop through device table looking for a match
 drvmap2:	
 	; convert index to device type id
 	ld	a,c		; index to accum
-	rlca			; move it to upper nibble
-	rlca			; ...
-	rlca			; ...
-	rlca			; ...
 	ld	(device),a	; save as device id
 ;
 	; loop thru hbios units looking for device type/unit match
@@ -1309,10 +1305,6 @@ prtdev:
 	rst	08		; call hbios, D := device, E := unit
 	push	de		; save results
 	ld	a,d		; device to A
-	rrca			; isolate high nibble (device)
-	rrca			;   ...
-	rrca			;   ...
-	rrca			;   ... into low nibble
 	and	$0F		; mask out undesired bits
 	push	hl		; save HL
 	add	a,a		; multiple A by two for word table

Source/BPBIOS/diskdefs

@@ -310,6 +310,32 @@ diskdef wbw_rom1024
   os 2.2
 end
 
+# RomWBW 512KB RAM (256KB reserved, 256KB RAM Disk)
+
+diskdef wbw_ram512
+  seclen 512
+  tracks 8
+  sectrk 64
+  blocksize 2048
+  maxdir 256
+  skew 0
+  boottrk 0
+  os 2.2
+end
+
+# RomWBW 1024KB RAM (256KB reserved, 768KB RAM Disk)
+
+diskdef wbw_ram1024
+  seclen 512
+  tracks 24
+  sectrk 64
+  blocksize 2048
+  maxdir 256
+  skew 0
+  boottrk 0
+  os 2.2
+end
+
 # RomWBW 720K floppy media
 
 diskdef wbw_fd720

Source/CBIOS/cbios.asm

@@ -1350,7 +1350,6 @@ DSK_SELECT1A:
 	LD	B,BF_DIODEVICE	; HBIOS FUNC: REPORT DEVICE INFO
 	RST	08		; GET UNIT INFO, DEVICE TYPE IN D
 	LD	A,D		; DEVICE TYPE -> A
-	AND	$F0		; ISOLATE HIGH BITS
 	CP	DIODEV_FD	; FLOPPY?
 	JR	NZ,DSK_SELECT1B	; IF NOT, DO LBA IO
 	LD	HL,SEKLBA+3	; POINT TO HIGH ORDER BYTE
@@ -1511,8 +1510,8 @@ DSK_MBR3:
 ;
 DSK_MBR4:
 	; IF BOOT FROM PARTITION, USE NEW SECTORS PER SLICE VALUE
-	LD	HL,16384		; NEW SECTORS PER SLICE
-	LD	(SPS),HL		; SAVE IT
+	LD	HL,16384	; NEW SECTORS PER SLICE
+	LD	(SPS),HL	; SAVE IT
 
 	; UPDATE MEDIA ID
 	LD	A,MID_HDNEW	; NEW MEDIA ID
@@ -1520,20 +1519,79 @@ DSK_MBR4:
 ;
 DSK_MBR5:
 	; ADJUST LBA OFFSET BASED ON TARGET SLICE
-	LD	A,(SLICE)		; GET SLICE, A IS LOOP CNT
-	LD	HL,(SEKLBA)		; SET DE:HL
-	LD	DE,(SEKLBA+2)		; ... TO STARTING LBA
-	LD	BC,(SPS)		; SECTORS PER SLICE
-DSK_MBR6:
-	OR	A			; SET FLAGS TO CHECK LOOP CNTR
-	JR	Z,DSK_MBR8		; DONE IF COUNTER EXHAUSTED
-	ADD	HL,BC			; ADD ONE SLICE TO LOW WORD
-	JR	NC,DSK_MBR7		; CHECK FOR CARRY
-	INC	DE			; IF SO, BUMP HIGH WORD
-DSK_MBR7:
-	DEC	A			; DEC LOOP DOWNCOUNTER
-	JR	DSK_MBR6		; AND LOOP
+	LD	A,(SLICE)	; GET SLICE, A IS LOOP CNT
+	LD	HL,(SEKLBA)	; SET DE:HL
+	LD	DE,(SEKLBA+2)	; ... TO STARTING LBA
+	LD	BC,(SPS)	; SECTORS PER SLICE
+DSK_MBR6:                       
+	OR	A		; SET FLAGS TO CHECK LOOP CNTR
+	JR	Z,DSK_MBR8	; DONE IF COUNTER EXHAUSTED
+	ADD	HL,BC		; ADD ONE SLICE TO LOW WORD
+	JR	NC,DSK_MBR7	; CHECK FOR CARRY
+	INC	DE		; IF SO, BUMP HIGH WORD
+DSK_MBR7:                       
+	DEC	A		; DEC LOOP DOWNCOUNTER
+	JR	DSK_MBR6	; AND LOOP
 DSK_MBR8:
+	; LBA OFFSET OF DESIRED SLICE IS NOW IN DE:HL
+	; NEED TO CHECK IF THE SLICE IS BEYOND CAPACITY OF MEDIA
+	; IF LBA_OFF + SPS >= DSK_CAP, ERROR!
+
+	; SAVE LBA_OFF
+	PUSH	DE		; MSW
+	PUSH	HL		; LSW
+	
+	; ADD SPS TO COMPUTE LBA_REQ
+	LD	BC,(SPS)	; SECTORS PER SLICE
+	ADD	HL,BC		; ADD ONE SLICE TO LOW WORD
+	JR	NC,DSK_MBR9	; CHECK FOR CARRY
+	INC	DE		; IF SO, BUMP HIGH WORD
+DSK_MBR9:
+	; SAVE CAP_REQ
+	LD	(CAP_REQ),HL	; LSW
+	LD	(CAP_REQ+2),DE	; MSW
+;
+#IFDEF PLTWBW
+	; GET DSK_CAP (DE:HL)
+	LD	B,BF_DIOCAP	; HBIOS DISK CAPACITY FUNC
+	LD	A,(SEKUNIT)	; DISK UNIT NUMBER
+	LD	C,A		; ... INTO C
+	RST	08		; HBIOS CALL (DE:HL = CAPACITY)
+#ENDIF
+;
+#IFDEF PLTUNA
+	; GET DSK_CAP (DE:HL)
+	LD	C,$45		; UBIOS DISK INFO FUNC
+	LD	A,(SEKUNIT)	; DISK UNIT NUMBER
+	LD	B,A		; ... INTO B
+	RST	08		; CALL UNA (DE:HL = CAPACITY)
+#ENDIF
+;
+	; SAVE DSK_CAP (DE:HL)
+	PUSH	DE		; SAVE DSK_CAP (MSW)
+	PUSH	HL		; SAVE DSK_CAP (LSW)
+;
+	; CHECK DSK_CAP >= CAP_REQ, CF SET ON OVERFLOW
+	; NO NEED SAVE ACTUAL RESULT
+	OR	A		; CLEAR CARRY FOR SBC
+	POP	HL		; DSK_CAP LSW
+	LD	DE,(CAP_REQ)	; CAP_REQ LSW
+	SBC	HL,DE		; DSK_CAP - LBA_REQ (LSW)
+	POP	HL		; DSK_CAP MSW
+	LD	DE,(CAP_REQ+2)	; CAP_REQ MSW
+	SBC	HL,DE		; DSK_CAP - LBA_REQ (MSW)
+;
+	; RESTORE LBA_OFF
+	POP	HL		; LSW
+	POP	DE		; MSW
+;
+	; ABORT ON OVERFLOW WITH ERROR!
+	JR	NC,DSK_MBR10	; IF NO OVERFLOW, CONTINUE
+	OR	$FF		; SIGNAL ERROR
+	RET			; DONE
+;
+DSK_MBR10:
+	; FINALIZE SLICE LBA
 	SET	7,D		; SET LBA ACCESS FLAG
 	; RESAVE IT
 	LD	(SEKLBA),HL	; LOWORD
@@ -1758,6 +1816,7 @@ CCPBUF		.DW	0		; ADDRESS OF CCP BUF IN BIOS BANK
 MEDID		.DB	0		; TEMP STORAGE FOR MEDIA ID
 SLICE		.DB	0		; CURRENT SLICE
 SPS		.DW	0		; SECTORS PER SLICE
+CAP_REQ		.DW	0,0		; LBA CAP REQUIRED FOR SLICE
 STKSAV		.DW	0		; TEMP SAVED STACK POINTER
 ;
 #IFDEF PLTWBW
@@ -3346,10 +3405,6 @@ DEVUNK		.DB	"UNK$"
 	RST	08		; CALL HBIOS
 	LD	A,D		; RESULTANT DEVICE TYPE
 	PUSH	DE		; NEED TO SAVE UNIT NUMBER (IN E)
-	RRCA			; ROTATE DEVICE
-	RRCA			; ... BITS
-	RRCA			; ... INTO
-	RRCA			; ... LOWEST 4 BITS
 	AND	$0F		; ISOLATE DEVICE BITS
 	ADD	A,A		; MULTIPLY BY TWO FOR WORD TABLE
 	LD	HL,DEVTBL	; POINT TO START OF DEVICE NAME TABLE

Source/CPM3/diskio.z80

@@ -38,7 +38,7 @@
 	
 	extrn	?bnkxlt
 	
-	extrn	phex8, cout
+	extrn	phex16, phex8, cout, crlf, crlf2
 
 
     ; CP/M 3 Disk definition macros
@@ -493,8 +493,7 @@ media:
 	ld	b,17h			; HBIOS func: report device info
 	call	0FFF0h			; get unit info, device type in D
 	ld	a,d			; device type -> A
-	and	0F0h			; isolate high bits
-	cp	10h			; floppy?
+	cp	01h			; floppy?
 	jr	nz,media1		; if not, do LBA I/O
 	ld	hl,lba+3		; point to high order byte
 	res	7,(hl)			; switch from LBA -> CHS
@@ -600,6 +599,53 @@ boot7:
 	dec	a			; dec loop downcounter
 	jr	boot6			; and loop
 boot8:
+
+	; LBA offset of desired slice is now in DE:HL.
+	; Need to check if the slice is beyond capacity of media.
+	; If lba_off + sps >= dsk_cap, error!
+
+	; Save lba_off
+	push	de		; msw
+	push	hl		; lsw
+	
+	; Add sps to compute lba_req
+	ld	bc,(sps)	; sectors per slice
+	add	hl,bc		; add one slice to low word
+	jr	nc,dsk_mbr9	; check for carry
+	inc	de		; if so, bump high word
+dsk_mbr9:
+	; Save cap_req
+	ld	(cap_req),hl	; lsw
+	ld	(cap_req+2),de	; msw
+
+	; Get dsk_cap (de:hl)
+	ld	b,1Ah		; hbios disk capacity func
+	ld	a,(unit)	; disk unit number
+	ld	c,a		; ... into c
+	rst	08		; hbios call (de:hl = capacity)
+
+	; Save dsk_cap (de:hl)
+	push	de		; save dsk_cap (msw)
+	push	hl		; save dsk_cap (lsw)
+
+	; Check dsk_cap >= cap_req, cf set on overflow
+	; No need save actual result
+	or	a		; clear carry for sbc
+	pop	hl		; dsk_cap lsw
+	ld	de,(cap_req)	; cap_req lsw
+	sbc	hl,de		; dsk_cap - lba_req (lsw)
+	pop	hl		; dsk_cap msw
+	ld	de,(cap_req+2)	; cap_req msw
+	sbc	hl,de		; dsk_cap - lba_req (msw)
+
+	; Restore lba_off
+	pop	hl		; lsw
+	pop	de		; msw
+
+	; Abort on overflow with error!
+	jp	c,err_noslice	; slice too high, error exit
+
+	; Finalize slice lba
 	set	7,d			; set LBA access flag
 	ld	(lba),hl		; save new lba, low word
 	ld	(lba+2),de		; save new lba, high word
@@ -870,6 +916,7 @@ unit		db	0		; working disk unit num
 slice		db	0		; working slice num
 lba		dw	0,0		; working  lba
 sps		dw	0		; sectors per slice
+cap_req		dw	0,0		; lba cap required for slice
 mbrsec		ds	512		; MBR sector buffer
 dma		dw	0		; current DMA address
 bank		db	0		; HBIOS DMA bank

Source/Doc/Basic.h

@@ -1,4 +1,4 @@
-$define{doc_ver}{Version 3.3}$
+$define{doc_ver}{Version 3.4}$
 $define{doc_product}{RomWBW}$
 $define{doc_root}{https://github.com/wwarthen/RomWBW/raw/dev/Doc}$
 $ifndef{doc_title}$ $define{doc_title}{Document Title}$ $endif$

Source/Doc/Makefile

@@ -1,7 +1,7 @@
 #
-# NOTE: Pandoc, Latex (MiKTeX or TexLive), and gpp must be installed
+# NOTE: gpp, Pandoc, and Latex (MiKTeX or TexLive) must be installed
 # and available on commandline for this build to work!!!
-# Typically "sudo apt install pandoc, texlive-latex-extra, gpp"
+# Typically "sudo apt install gpp pandoc texlive-latex-extra texlive-luatex texlive-fonts-extra fonts-roboto"
 #
 OBJECTS = ReadMe.gfm ReadMe.txt UserGuide.pdf SystemGuide.pdf Applications.pdf ROM_Applications.pdf Catalog.pdf Errata.pdf
 # DEST = ../../Doc
@@ -16,7 +16,7 @@ all :: deploy
 	gpp -o $@ -U "$$" "$$" "{" "}{" "}$$" "{" "}" "@@@" "" -M "$$" "$$" "{" "}{" "}$$" "{" "}" $<
 
 %.pdf : %.tmp
-	pandoc $< -f markdown -t latex -s -o $@ --default-image-extension=pdf
+	pandoc $< -f markdown -t pdf -s -o $@ --default-image-extension=pdf --pdf-engine=lualatex
 
 %.html : %.tmp
 	pandoc $< -f markdown -t html -s -o $@ --default-image-extension=pdf

Source/Doc/SystemGuide.md

@@ -390,17 +390,20 @@ below enumerates these values.
 | **Device Type** | **ID** | **Description**                          | **Driver** |
 |-----------------|-------:|------------------------------------------|------------|
 | CIODEV_UART     | 0x00   | 16C550 Family Serial Interface           | uart.asm   |
-| CIODEV_ASCI     | 0x10   | Z180 Built-in Serial Ports               | asci.asm   |
-| CIODEV_TERM     | 0x20   | Terminal                                 | ansi.asm   |
-| CIODEV_PRPCON   | 0x30   | PropIO Serial Console Interface          | prp.asm    |
-| CIODEV_PPPCON   | 0x40   | ParPortProp Serial Console Interface     | ppp.asm    |
-| CIODEV_SIO      | 0x50   | Zilog Serial Port Interface              | sio.asm    |
-| CIODEV_ACIA     | 0x60   | MC68B50 Asynchronous Interface           | acia.asm   |
-| CIODEV_PIO      | 0x70   | Zilog Parallel Interface Controller      | pio.asm    |
-| CIODEV_UF       | 0x80   | FT232H-based ECB USB FIFO                | uf.asm     |
-| CIODEV_DUART    | 0x90   | SCC2681 Family Dual UART                 | duart.asm  |
-| CIODEV_Z2U      | 0xA0   | Zilog Z280 Built-in Serial Ports         | z2u.asm    |
-| CIODEV_LPT      | 0xB0   | Parallel I/O Controller                  | lpt.asm    |
+| CIODEV_ASCI     | 0x01   | Z180 Built-in Serial Ports               | asci.asm   |
+| CIODEV_TERM     | 0x02   | Terminal                                 | ansi.asm   |
+| CIODEV_PRPCON   | 0x03   | PropIO Serial Console Interface          | prp.asm    |
+| CIODEV_PPPCON   | 0x04   | ParPortProp Serial Console Interface     | ppp.asm    |
+| CIODEV_SIO      | 0x05   | Zilog Serial Port Interface              | sio.asm    |
+| CIODEV_ACIA     | 0x06   | MC68B50 Asynchronous Interface           | acia.asm   |
+| CIODEV_PIO      | 0x07   | Zilog Parallel Interface Controller      | pio.asm    |
+| CIODEV_UF       | 0x08   | FT232H-based ECB USB FIFO                | uf.asm     |
+| CIODEV_DUART    | 0x09   | SCC2681 Family Dual UART                 | duart.asm  |
+| CIODEV_Z2U      | 0x0A   | Zilog Z280 Built-in Serial Ports         | z2u.asm    |
+| CIODEV_LPT      | 0x0B   | Parallel I/O Controller                  | lpt.asm    |
+| CIODEV_ESPCON   | 0x0B   | ESP32 VGA Console                        | esp.asm    |
+| CIODEV_ESPSER   | 0x0B   | ESP32 Serial Port                        | esp.asm    |
+| CIODEV_SCON     | 0x0B   | S100 Console                             | scon.asm   |
 
 Character devices can usually be configured with line characteristics
 such as speed, framing, etc. A word value (16 bit) is used to describe
@@ -568,15 +571,20 @@ below enumerates there values.
 | **Device Type** | **ID** | **Description**                          | **Driver** |
 |-----------------|-------:|------------------------------------------|------------|
 | DIODEV_MD       | 0x00   | Memory Disk                              | md.asm     |
-| DIODEV_FD       | 0x10   | Floppy Disk                              | fd.asm     |
-| DIODEV_RF       | 0x20   | RAM Floppy                               | rf.asm     |
-| DIODEV_IDE      | 0x30   | IDE Disk                                 | ide.asm    |
-| DIODEV_ATAPI    | 0x40   | ATAPI Disk (not implemented)             |            |
-| DIODEV_PPIDE    | 0x50   | PPIDE Disk                               | ppide.asm  |
-| DIODEV_SD       | 0x60   | SD Card                                  | sd.asm     |
-| DIODEV_PRPSD    | 0x70   | PropIO SD Card                           | prp.asm    |
-| DIODEV_PPPSD    | 0x80   | ParPortProp SD Card                      | ppp.asm    |
-| DIODEV_HDSK     | 0x90   | SIMH HDSK Disk                           | hdsk.asm   |
+| DIODEV_FD       | 0x01   | Floppy Disk                              | fd.asm     |
+| DIODEV_RF       | 0x02   | RAM Floppy                               | rf.asm     |
+| DIODEV_IDE      | 0x03   | IDE Disk                                 | ide.asm    |
+| DIODEV_ATAPI    | 0x04   | ATAPI Disk (not implemented)             |            |
+| DIODEV_PPIDE    | 0x05   | PPIDE Disk                               | ppide.asm  |
+| DIODEV_SD       | 0x06   | SD Card                                  | sd.asm     |
+| DIODEV_PRPSD    | 0x07   | PropIO SD Card                           | prp.asm    |
+| DIODEV_PPPSD    | 0x08   | ParPortProp SD Card                      | ppp.asm    |
+| DIODEV_HDSK     | 0x09   | SIMH HDSK Disk                           | hdsk.asm   |
+| DIODEV_PPA      | 0x0A   | Iomega PPA Disk                          | ppa.asm    |
+| DIODEV_IMM      | 0x0B   | Iomega IMM Disk                          | imm.asm    |
+| DIODEV_SYQ      | 0x0C   | Syquest Sparq Disk                       | syq.asm    |
+| DIODEV_CHUSB    | 0x0D   | CH375/376 USB Disk                       | ch.asm     |
+| DIODEV_CHSD     | 0x0E   | CH375/376 SD Card                        | ch.asm     |
 
 A fixed set of media types are defined. The currently defined media 
 types identifiers are listed below. Each driver will support one or
@@ -878,11 +886,11 @@ unit.  The table below enumerates these values.
 | **Device Type** | **ID** | **Description**                          | **Driver** |
 |-----------------|-------:|------------------------------------------|------------|
 | RTCDEV_DS       | 0x00   | Maxim DS1302 Real-Time Clock w/ NVRAM    | dsrtc.asm  |
-| RTCDEV_BQ       | 0x10   | BQ4845P Real Time Clock                  | bqrtc.asm  |
-| RTCDEV_SIMH     | 0x20   | SIMH Simulator Real-Time Clock           | simrtc.asm |
-| RTCDEV_INT      | 0x30   | Interrupt-based Real Time Clock          | intrtc.asm |
-| RTCDEV_DS7      | 0x40   | Maxim DS1307 PCF I2C RTC w/ NVRAM        | ds7rtc.asm |
-| RTCDEV_RP5      | 0x50   | Ricoh RPC01A Real-Time Clock w/ NVRAM    | rp5rtc.asm |
+| RTCDEV_BQ       | 0x01   | BQ4845P Real Time Clock                  | bqrtc.asm  |
+| RTCDEV_SIMH     | 0x02   | SIMH Simulator Real-Time Clock           | simrtc.asm |
+| RTCDEV_INT      | 0x03   | Interrupt-based Real Time Clock          | intrtc.asm |
+| RTCDEV_DS7      | 0x04   | Maxim DS1307 PCF I2C RTC w/ NVRAM        | ds7rtc.asm |
+| RTCDEV_RP5      | 0x05   | Ricoh RPC01A Real-Time Clock w/ NVRAM    | rp5rtc.asm |
 
 The time functions to get and set the time (RTCGTM and RTCSTM) require a
 6 byte date/time buffer in the following format. Each byte is BCD 
@@ -1021,8 +1029,8 @@ unit.  The table below enumerates these values.
 
 | **Device Type** | **ID** | **Description**                          | **Driver** |
 |-----------------|-------:|------------------------------------------|------------|
-| DSKYDEV_ICM     | 0x00   | Original ICM7218 based DSKY              | icm.asm    |
-| DSKYDEV_PKD     | 0x10   | Next Gen Intel P8279 based DSKY          | pkd.asm    |
+| DSKYDEV_ICM     | 0x01   | Original ICM7218 based DSKY              | icm.asm    |
+| DSKYDEV_PKD     | 0x02   | Next Gen Intel P8279 based DSKY          | pkd.asm    |
 
 When segment display function encodes the display data in a byte per
 character format.  Currently, all segment displays are exactly
@@ -1214,10 +1222,11 @@ below enumerates there values.
 | **Device Type** | **ID** | **Description**                          | **Driver** |
 |-----------------|-------:|------------------------------------------|------------|
 | VDADEV_VDU      | 0x00   | MC6845 Family Video Display Controller   | vdu.asm    |
-| VDADEV_CVDU     | 0x10   | MC8563-based Video Display Controller    | cvdu.asm   |
-| VDADEV_GDC      | 0x20   | uPD7220 Video Display Controller         | gdc.asm    |
-| VDADEV_TMS      | 0x30   | TMS9918/38/58 Video Display Controller   | tms.asm    |
-| VDADEV_VGA      | 0x40   | HD6445CP4-based Video Display Controller | vga.asm    |
+| VDADEV_CVDU     | 0x01   | MC8563-based Video Display Controller    | cvdu.asm   |
+| VDADEV_GDC      | 0x02   | uPD7220 Video Display Controller         | gdc.asm    |
+| VDADEV_TMS      | 0x03   | TMS9918/38/58 Video Display Controller   | tms.asm    |
+| VDADEV_VGA      | 0x04   | HD6445CP4-based Video Display Controller | vga.asm    |
+| VDADEV_VRC      | 0x05   | VGARC                                    | vrc.asm    |
 
 Depending on the capabilities of the hardware, the use of colors and
 attributes may or may not be supported. If the hardware does not support
@@ -1629,9 +1638,9 @@ below enumerates these values.
 | **Device Type** | **ID** | **Description**                              | **Driver**  |
 |-----------------|-------:|----------------------------------------------|-------------|
 | SNDDEV_SN76489  | $00    | SN76489 Programmable Sound Generator         | sn76489.asm |
-| SNDDEV_AY38910  | $10    | AY-3-8910/YM2149 Programmable Sound Generator| ay38910.asm |
-| SNDDEV_BITMODE  | $20    | Bit-bang Speaker                             | spk.asm     |
-| SNDDEV_YM2612   | $30    | YM2612 Programmable Sound Generator          | ym2612.asm  |
+| SNDDEV_AY38910  | $01    | AY-3-8910/YM2149 Programmable Sound Generator| ay38910.asm |
+| SNDDEV_BITMODE  | $02    | Bit-bang Speaker                             | spk.asm     |
+| SNDDEV_YM2612   | $03    | YM2612 Programmable Sound Generator          | ym2612.asm  |
 
 The Sound functions defer the actual programming of the sound chip
 until the SNDPLAY function is called.  You will call the volume

Source/Doc/UserGuide.md

@@ -206,7 +206,7 @@ below, **carefully** pick the appropriate ROM image for your hardware.
 | [Z80-Retro SBC]^8^                                             | -       | Z80RETRO_std.rom   | 38400         |
 | [S100 Computers Z180]^9^                                       | S100    | S100_std.rom       | 38400         |
 | [Duodyne Z80 System]^1^                                        | Duo     | DUO_std.rom        | 38400         |
-| [Heath H8 Z80 System]                                          | H8      | HEATH_std.rom      | 115200        |
+| [Heath H8 Z80 System]^10^                                      | H8      | HEATH_std.rom      | 115200        |
 
 | ^1^Designed by Andrew Lynch
 | ^2^Designed by Sergey Kiselev
@@ -217,6 +217,7 @@ below, **carefully** pick the appropriate ROM image for your hardware.
 | ^7^Designed by Bill Shen
 | ^8^Designed by Peter Wilson
 | ^9^Designed by John Monahan
+| ^10^Designed by Les Bird
 
 RCBus refers to Spencer Owen's RC2014 bus specification and derivatives
 including RC26, RC40, RC80, and BP80.
@@ -1300,7 +1301,7 @@ is considered the "legacy" disk layout for RomWBW.
 
 RomWBW has subsequently been enhanced to support the concept of
 partitioning.  The partition mechanism is entirely compliant with Master
- Boot Record (MBR) Partition Tables introduced by IBM for the PC.  The
+Boot Record (MBR) Partition Tables introduced by IBM for the PC.  The
 Wikipedia article on the
 [Master Boot Record](https://en.wikipedia.org/wiki/Master_boot_record)
 is excellent if you are not familiar with them.  This is considered the
@@ -1403,6 +1404,38 @@ Directory Entries".  In this case, the value is 1024 which implies that
 this drive is located on a modern (hd1k) disk layout.  If the value
 was 512, it would indicate a legacy (hd512) disk layout.
 
+## Hard Disk Capacity
+
+Although RomWBW can support many CP/M filesystem slices on a single
+hard disk, you are still constrained by the physical capacity of the
+actual hard disk.  In most scenarios, RomWBW does not prevent you
+from attempting to use more slices than will fit on your hard disk
+device.  If you attempt to do so, disk I/O errors will be reported.
+
+The exact number of CP/M filesystem slices that will fit on your 
+specific physical hard disk can be determined as follows:
+
+- For hd512 disk layouts, it is slices * 8,320KB.
+- For hd1k disk layouts, it is 1024KB + (slices * 8192KB).  Since
+  1024KB is exactly 1MB, it is equivalent to say 1MB + (slices * 8MB).
+
+**WARNING**: In this document KB means 1024 bytes and MB means 1048576 
+bytes (frequently expressed as KiB and MiB in modern terminology).
+In general, hard disk capacities use KB to mean 1000 bytes and MB
+to mean 1,000,000 bytes.
+
+As an example, hardware distributors frequently supply a "64MB"
+CF Card with a RomWBW system.  Such a hard disk probably has
+less than 62.5MB of actual space (using the RomWBW definition that
+1MB is 1048576 bytes).  Such a drive will not support 8 slices.  It
+will support 7 slices just fine because 7 * 8,320KB = 58.24MB (hd512)
+or 1024KB + (7 * 8192MB) = 57MB (hd1k).
+
+The cost of high capacity CF and SD Cards has become very reasonable.
+I highly recommend upgrading to 1GB or greater media.  This size will
+support all features of the RomWBW Combo Disk Image with 64 slices
+and a 384MB FAT filesystem (see [Combo Hard Disk Image]).
+
 # Disk Content Preparation
 
 With some understanding of how RomWBW presents disk space to the
@@ -1510,20 +1543,20 @@ command prompt.
 
 ### Hard Disk Images
 
-Keeping in mind that a RomWBW hard disk (including CF /SD Cards)
+Keeping in mind that a RomWBW hard disk (including CF/SD Cards)
 allows you to have multiple slices (CP/M filesystems), there are a
 couple ways to image hard disk media.  The easiest approach is to 
 use the "combo" disk image.  This image is already prepared
 with 6 slices containing 5 ready-to-run OSes and a slice with
-the WordStar application.  Alternatively, you can create your own
+the WordStar application files.  Alternatively, you can create your own
 hard disk image with the specific slice contents you choose.
 
 #### Combo Hard Disk Image
 
 The combo disk image is essentially just a single image that has several
-of the individual filesystem images already concatenated together. The 
-combo disk image contains the following 6 slices in the positions 
-indicated:
+ of the individual filesystem images (slices) already concatenated 
+together. The combo disk image contains the following 6 slices in the 
+positions indicated:
 
 | **Slice** | **Description**                                                  |
 |-----------|------------------------------------------------------------------|
@@ -1537,7 +1570,50 @@ indicated:
 You will notice that there are actually 2 combo disk images in the 
 distribution.  One for an hd512 disk layout (hd512_combo.img) and one 
 for an hd1k disk layout (hd1k_combo.img). Simply use the image file that
-corresponds to your desired hard disk layout.
+corresponds to your desired hard disk layout.  Review the information
+in [Hard Disk Layouts] if you need more information of the disk layout
+options.
+
+Although the combo disk images contain only 6 slices of content, they
+reserve space to store 64 CP/M filesystem slices as well as a
+single 384MB FAT filesystem.  Keep in mind that the slices beyond the
+first 6 are not yet initialized.  You will need to use the `CLRDIR`
+application to initialize them before their first use.  Likewise, the
+pre-allocated FAT partition must still be formatted using `FAT FORMAT`
+in order to actually use it (see [FAT Filesystem Preparation]).
+Alternatively, the FAT partition can be formatted on a modern computer.
+
+The combo disk image layout was designed to fit well on a 1GB hard disk.
+The 64 CP/M slices (approximately 512MB) and 384MB FAT filesystem all 
+fit well within a 1GB hard disk.  This size choice was a bit arbitrary, 
+but based on the idea that a 1GB CF or SD Card is easy and cheap to 
+acquire.  It is fine if your hard disk is smaller than 1GB.  It just 
+means that it will not be possible to use the pre-allocated FAT 
+filesystem partition and any CP/M filesystem slices that don't fit.  You
+will get I/O errors if you attempt to access an area beyond the end of
+the physical hard disk.
+
+**WARNING**:Your hard disk may be too small to contain the full 64
+CP/M filesystem slices.  The true number of CP/M filesystem slices that
+will fit on your specific physical hard disk can be calculated as
+described in [Hard Disk Capacity].
+
+For RomWBW systems with a single hard disk (typical), you will notice 
+that the OS will pre-allocate 8 drive letters to the hard disk.  If the 
+combo disk image is being used, only the first 6 drive letters 
+(typically C: - H:) will have any content because the combo disk image 
+only provides 6 slices. The subsequent drives (typically I: - J:) will 
+have no content and will not be pre-initialized.  If you want to use any
+slices beyond the first 6 on the hard disk, then you must initialize 
+them using `CLRDIR` first.
+
+A great way to maintain your own data on a hard disk is to put this
+data in slices beyond the first 6.  By doing so, you can always
+"reimage" your drive with the combo image without overlaying the data
+stored in the slices beyond the first 6.  Just be very careful to use
+the same combo image layout (hd512 or hd1k) as you used originally.
+Also remember to calculate the maximum number of slices your hard disk
+will support and do not exceed this number.
 
 #### Custom Hard Disk Image
 

Source/HBIOS/Bank Layout.txt

@@ -55,7 +55,7 @@ Bank ID         Usage
 
 
 ROMless Tiny Bank Layout (128K)
-NOTE: No ROM Apps, No CP/M 3 support
+NOTE: no ROM Apps, no CP/M 3 support, no RAM disk
 
 Bank ID         Usage
 -------         ------
@@ -63,3 +63,12 @@ Bank ID         Usage
 0x81		Loader, DbgMon, CP/M 2.2, ZSDOS
 0x82            User TPA
 0x83            Common
+
+Disk Image Sizes
+
+Image Size	ROM System	ROMless System
+----------	----------	--------------
+1024K		896K		768K
+512		384K		256K
+256		128K		0K
+128 (tiny)	n/a		0K

Source/HBIOS/Build.cmd

@@ -135,7 +135,7 @@ if %ROMSize% gtr 0 (
     copy /b hbios_rom.bin + osimg.bin + osimg1.bin + osimg2.bin %ROMName%.upd || exit /b
     copy /b hbios_app.bin + osimg_small.bin %ROMName%.com || exit /b
 ) else (
-    copy /b hbios_rom.bin + osimg.bin + osimg1.bin + osimg2.bin %ROMName%.rom || exit /b
+    copy /b hbios_rom.bin + osimg.bin + osimg1.bin + osimg2.bin  + ..\RomDsk\ram%ROMSize%_wbw.dat %ROMName%.rom || exit /b
     copy /b hbios_rom.bin + osimg.bin + osimg1.bin + osimg2.bin %ROMName%.upd || exit /b
     copy /b hbios_app.bin + osimg_small.bin %ROMName%.com || exit /b
 )
@@ -220,6 +220,7 @@ call Build RCZ280 ext || exit /b
 call Build RCZ280 nat || exit /b
 call Build RCZ280 zz80mb || exit /b
 call Build RCZ280 zzrc || exit /b
+call Build RCZ280 zzrc_ram || exit /b
 call Build SCZ180 sc126 || exit /b
 call Build SCZ180 sc130 || exit /b
 call Build SCZ180 sc131 || exit /b

Source/HBIOS/Build.sh

@@ -19,6 +19,7 @@ if [ "${ROM_PLATFORM}" == "dist" ] ; then
 	ROM_PLATFORM="RCZ280"; ROM_CONFIG="nat"; bash Build.sh
 	ROM_PLATFORM="RCZ280"; ROM_CONFIG="zz80mb"; bash Build.sh
 	ROM_PLATFORM="RCZ280"; ROM_CONFIG="zzrc"; bash Build.sh
+	ROM_PLATFORM="RCZ280"; ROM_CONFIG="zzrc_ram"; bash Build.sh
 #	ROM_PLATFORM="RCZ80"; ROM_CONFIG="mt"; bash Build.sh
 #	ROM_PLATFORM="RCZ80"; ROM_CONFIG="duart"; bash Build.sh
 	ROM_PLATFORM="RCZ80"; ROM_CONFIG="std"; bash Build.sh

Source/HBIOS/Config/RCZ280_zz80mb.asm

@@ -37,8 +37,7 @@ FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 MEMMGR		.SET	MM_Z280		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280]
 ;
-RAMLOC		.SET	23		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.SET	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.SET	8192		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 ;
 Z280_MEMLOWAIT	.SET	0		; Z280: LOW 8MB MEMORY WAIT STATES (0-3)
 Z280_MEMHIWAIT	.SET	0		; Z280: HIGH 8MB MEMORY WAIT STATES (0-3)

Source/HBIOS/Config/RCZ280_zzrc.asm

@@ -39,10 +39,7 @@ MEMMGR		.SET	MM_Z280		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280]
 ;
 RAMSIZE		.SET	256		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.SET	256		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.SET	256		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
-;
-RAMLOC		.SET	18		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.SET	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.SET	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 ;
 Z280_MEMLOWAIT	.SET	0		; Z280: LOW 8MB MEMORY WAIT STATES (0-3)
 Z280_MEMHIWAIT	.SET	0		; Z280: HIGH 8MB MEMORY WAIT STATES (0-3)

Source/HBIOS/Config/RCZ280_zzrc_ram.asm

@@ -0,0 +1,77 @@
+;
+;==================================================================================================
+;   RCBUS Z280 STANDARD CONFIGURATION (NATIVE Z280 MMU W/ LINEAR MEMORY ON ZZRC)
+;==================================================================================================
+;
+; THE COMPLETE SET OF DEFAULT CONFIGURATION SETTINGS FOR THIS PLATFORM ARE FOUND IN THE
+; CFG_<PLT>.ASM INCLUDED FILE WHICH IS FOUND IN THE PARENT DIRECTORY.  THIS FILE CONTAINS
+; COMMON CONFIGURATION SETTINGS THAT OVERRIDE THE DEFAULTS.  IT IS INTENDED THAT YOU MAKE
+; YOUR CUSTOMIZATIONS IN THIS FILE AND JUST INHERIT ALL OTHER SETTINGS FROM THE DEFAULTS.
+; EVEN BETTER, YOU CAN MAKE A COPY OF THIS FILE WITH A NAME LIKE <PLT>_XXX.ASM AND SPECIFY
+; YOUR FILE IN THE BUILD PROCESS.
+;
+; THE SETTINGS BELOW ARE THE SETTINGS THAT ARE MOST COMMONLY MODIFIED FOR THIS PLATFORM.
+; MANY OF THEM ARE EQUAL TO THE SETTINGS IN THE INCLUDED FILE, SO THEY DON'T REALLY DO
+; ANYTHING AS IS.  THEY ARE LISTED HERE TO MAKE IT EASY FOR YOU TO ADJUST THE MOST COMMON
+; SETTINGS.
+;
+; N.B., SINCE THE SETTINGS BELOW ARE REDEFINING VALUES ALREADY SET IN THE INCLUDED FILE,
+; TASM INSISTS THAT YOU USE THE .SET OPERATOR AND NOT THE .EQU OPERATOR BELOW. ATTEMPTING
+; TO REDEFINE A VALUE WITH .EQU BELOW WILL CAUSE TASM ERRORS!
+;
+; PLEASE REFER TO THE CUSTOM BUILD INSTRUCTIONS (README.TXT) IN THE SOURCE DIRECTORY (TWO
+; DIRECTORIES ABOVE THIS ONE).
+;
+#DEFINE PLATFORM_NAME "ZZRC", " [", CONFIG, "]"
+;
+#DEFINE	BOOT_DEFAULT	"H"		; DEFAULT BOOT LOADER CMD ON <CR> OR AUTO BOOT
+;
+#include "cfg_rcz280.asm"
+;
+CPUOSC		.SET	14745600	; CPU OSC FREQ IN MHZ
+INTMODE		.SET	3		; INTERRUPTS: 0=NONE, 1=MODE 1, 2=MODE 2
+CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
+;
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
+;
+MEMMGR		.SET	MM_Z280		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280]
+;
+RAMSIZE		.SET	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
+ROMSIZE		.SET	0		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
+RAMBIAS		.SET	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+;
+Z280_MEMLOWAIT	.SET	0		; Z280: LOW 8MB MEMORY WAIT STATES (0-3)
+Z280_MEMHIWAIT	.SET	0		; Z280: HIGH 8MB MEMORY WAIT STATES (0-3)
+Z280_IOWAIT	.SET	1		; Z280: I/O WAIT STATES TO ADD ABOVE 1 W/S BUILT-IN (0-3)
+Z280_INTWAIT	.SET	0		; Z280: INT ACK WAIT STATUS (0-3)
+;
+MDROM		.SET	FALSE		; MD: ENABLE ROM DISK
+MDRAM		.SET	TRUE		; MD: ENABLE RAM DISK
+;
+Z2UENABLE	.SET	TRUE		; Z2U: ENABLE Z280 UART SERIAL DRIVER (Z2U.ASM)
+Z2UOSC		.SET	(CPUOSC / 8)	; Z2U: OSC FREQUENCY IN MHZ
+Z2U0HFC		.SET	TRUE		; Z2U0: ENABLE HARDWARE FLOW CONTROL
+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	TRUE		; SIO: ENABLE ZILOG SIO SERIAL DRIVER (SIO.ASM)
+;
+TMSENABLE	.SET	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
+TMSMODE		.SET	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
+MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
+VRCENABLE	.SET	TRUE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
+VDAEMU_SERKBD	.SET	$FF		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
+;
+AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
+AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC]
+SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
+;
+FDENABLE	.SET	TRUE		; 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]
+;
+IDEENABLE	.SET	TRUE		; IDE: ENABLE IDE DISK DRIVER (IDE.ASM)
+PPIDEENABLE	.SET	TRUE		; PPIDE: ENABLE PARALLEL PORT IDE DISK DRIVER (PPIDE.ASM)
+SDENABLE	.SET	FALSE		; SD: ENABLE SD CARD DISK DRIVER (SD.ASM)
+SDCNT		.SET	1		; SD: NUMBER OF SD CARD DEVICES (1-2), FOR DSD/SC/MT SC ONLY
+;
+PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)

Source/HBIOS/Config/RCZ80_zrc_ram.asm

@@ -34,7 +34,7 @@ CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
 FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
-RAMSIZE		.SET	2048		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
+RAMSIZE		.SET	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.SET	0		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
 MEMMGR		.SET	MM_ZRC		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180]
 ;

Source/HBIOS/cfg_duo.asm

@@ -34,7 +34,6 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z2		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 MPGSEL_0	.EQU	$50		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$51		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_dyno.asm

@@ -34,10 +34,8 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z180		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
-RAMLOC		.EQU	19		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.EQU	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.EQU	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$79		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_2	.EQU	$7A		; Z2 MEM MGR BANK 2 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_heath.asm

@@ -34,7 +34,6 @@ DEFSERCFG	.EQU	SER_115200_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z2		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$79		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_master.asm

@@ -31,10 +31,8 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_NONE		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
-RAMLOC		.EQU	19		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.EQU	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.EQU	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 MPCL_RAM	.EQU	$78		; SBC MEM MGR RAM PAGE SELECT REG (WRITE ONLY)
 MPCL_ROM	.EQU	$7C		; SBC MEM MGR ROM PAGE SELECT REG (WRITE ONLY)
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_mbc.asm

@@ -34,7 +34,6 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_MBC		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 MPCL_RAM	.EQU	$78		; SBC MEM MGR RAM PAGE SELECT REG (WRITE ONLY)
 MPCL_ROM	.EQU	$7C		; SBC MEM MGR ROM PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_mk4.asm

@@ -34,10 +34,8 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z180		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
-RAMLOC		.EQU	19		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.EQU	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.EQU	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 ;
 Z180_BASE	.EQU	$40		; Z180: I/O BASE ADDRESS FOR INTERNAL REGISTERS
 Z180_CLKDIV	.EQU	1		; Z180: CHK DIV: 0=OSC/2, 1=OSC, 2=OSC*2

Source/HBIOS/cfg_n8.asm

@@ -34,10 +34,8 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_N8		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 RAMBIAS		.EQU	0		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
-RAMLOC		.EQU	0		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
 ;
 Z180_BASE	.EQU	$40		; Z180: I/O BASE ADDRESS FOR INTERNAL REGISTERS
 Z180_CLKDIV	.EQU	1		; Z180: CHK DIV: 0=OSC/2, 1=OSC, 2=OSC*2

Source/HBIOS/cfg_rcz180.asm

@@ -34,10 +34,8 @@ DEFSERCFG	.EQU	SER_115200_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z180		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
-RAMLOC		.EQU	19		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.EQU	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.EQU	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$79		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_2	.EQU	$7A		; Z2 MEM MGR BANK 2 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_rcz280.asm

@@ -34,10 +34,8 @@ DEFSERCFG	.EQU	SER_115200_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z2		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
-RAMLOC		.EQU	19		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.EQU	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.EQU	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$79		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_2	.EQU	$7A		; Z2 MEM MGR BANK 2 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_rcz80.asm

@@ -34,7 +34,6 @@ DEFSERCFG	.EQU	SER_115200_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z2		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$79		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_rph.asm

@@ -34,10 +34,8 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_RPH		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 RAMBIAS		.EQU	0		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
-RAMLOC		.EQU	0		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
 ;
 Z180_BASE	.EQU	$40		; Z180: I/O BASE ADDRESS FOR INTERNAL REGISTERS
 Z180_CLKDIV	.EQU	1		; Z180: CHK DIV: 0=OSC/2, 1=OSC, 2=OSC*2

Source/HBIOS/cfg_s100.asm

@@ -34,10 +34,8 @@ DEFSERCFG	.EQU	SER_57600_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z180		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
-RAMLOC		.EQU	19		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.EQU	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.EQU	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$79		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_2	.EQU	$7A		; Z2 MEM MGR BANK 2 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_sbc.asm

@@ -34,7 +34,6 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_SBC		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 MPCL_RAM	.EQU	$78		; SBC MEM MGR RAM PAGE SELECT REG (WRITE ONLY)
 MPCL_ROM	.EQU	$7C		; SBC MEM MGR ROM PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_scz180.asm

@@ -34,10 +34,8 @@ DEFSERCFG	.EQU	SER_115200_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z180		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
-RAMLOC		.EQU	19		; START OF RAM AS POWER OF 2 (2^N) IN PHYSICAL ADDRESS SPACE
-RAMBIAS		.EQU	(1 << (RAMLOC - 10))	; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
+RAMBIAS		.EQU	ROMSIZE		; OFFSET OF START OF RAM IN PHYSICAL ADDRESS SPACE
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$79		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_2	.EQU	$7A		; Z2 MEM MGR BANK 2 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_z80retro.asm

@@ -34,7 +34,6 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z2		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 MPGSEL_0	.EQU	$60		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$61		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_zeta.asm

@@ -34,7 +34,6 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_SBC		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 MPCL_RAM	.EQU	$78		; SBC MEM MGR RAM PAGE SELECT REG (WRITE ONLY)
 MPCL_ROM	.EQU	$7C		; SBC MEM MGR ROM PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/cfg_zeta2.asm

@@ -34,7 +34,6 @@ DEFSERCFG	.EQU	SER_38400_8N1	; DEFAULT SERIAL LINE CONFIG (SEE STD.ASM)
 ;
 RAMSIZE		.EQU	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
-ROMSIZE_CHK	.EQU	0		; ROMSIZE VALUE VERIFICATION (0=DISABLED)
 MEMMGR		.EQU	MM_Z2		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH]
 MPGSEL_0	.EQU	$78		; Z2 MEM MGR BANK 0 PAGE SELECT REG (WRITE ONLY)
 MPGSEL_1	.EQU	$79		; Z2 MEM MGR BANK 1 PAGE SELECT REG (WRITE ONLY)

Source/HBIOS/hbios.asm

@@ -88,20 +88,6 @@ MODCNT	.SET	MODCNT + 1
 	!!!	; FORCE AN ASSEMBLY ERROR
 #ENDIF
 ;
-; SOME HARDWARE REQUIRES A SPECIFIC ROMSIZE (NOTABLY ZZRCC) OR THE
-; RESULTING BUILD IMAGES WILL BE CORRUPT.  ROMSIZE_CHK IS SPECIFIED
-; IN THE CONFIG FILE AND IS VERIFIED AGAINST THE ROMSIZE BEING USED
-; BY THE BUILD.  A ROMSIZE_CHK VALUE OF 0 INDICATES THE VERIFICATION
-; IS DISABLED (WHICH IT USUALLY IS).
-;
-#IF (ROMSIZE_CHK != 0) & (ROMSIZE != ROMSIZE_CHK)
-	.ECHO	"*** ERROR: ROMSIZE VALUE VERIFICATION FAILURE.\n"
-	.ECHO	"THIS CONFIGURATION REQUIRES A ROMSIZE OF " \ .ECHO ROMSIZE_CHK \ .ECHO ".\n"
-	.ECHO	"BUILD IS USING A ROMSIZE OF " \ .ECHO ROMSIZE \ .ECHO ".\n"
-	.ECHO	"SEE COMMENTS IN HBIOS.ASM.\n"
-	!!!	; FORCE AN ASSEMBLY ERROR
-#ENDIF
-;
 ;
 ;
 #IF (FPLED_ENABLE)
@@ -196,7 +182,13 @@ MODCNT	.SET	MODCNT + 1
   #ENDIF
 #ENDIF
 ;
+; CONVERT ROMWBW LOGICAL BANK ID TO PHYSICAL 32K BANK OFFSET
 ;
+#DEFINE PBANK(X) (((X >> 7) * (RAMBIAS / 32)) + (X & $7F))
+;
+; CONVERT ROMWBW LOGICAL BANK ID TO Z280 PHYSICAL BANK (4K) OFFSET
+;
+#DEFINE Z2_BANK(X) (PBANK(X) << 3)
 ;
 ; THE RTCDEF EQUATE IS INITIALIZED HERE AND UPDATED BY DRIVER INCLUDES
 ; THAT SHARE THE RTC LATCH.  AS EACH DRIVER FILE IS INCLUDED, IT CAN
@@ -1222,14 +1214,14 @@ Z280_BOOTPDRTBL:
 	.DW	($006 << 4) | $A
 	.DW	($007 << 4) | $A
 	; UPPER 32 K (COMMON)
-	.DW	(((((BID_COM & $7F) * 8) + 0) + (1 << (RAMLOC - 12))) << 4) | $A
-	.DW	(((((BID_COM & $7F) * 8) + 1) + (1 << (RAMLOC - 12))) << 4) | $A
-	.DW	(((((BID_COM & $7F) * 8) + 2) + (1 << (RAMLOC - 12))) << 4) | $A
-	.DW	(((((BID_COM & $7F) * 8) + 3) + (1 << (RAMLOC - 12))) << 4) | $A
-	.DW	(((((BID_COM & $7F) * 8) + 4) + (1 << (RAMLOC - 12))) << 4) | $A
-	.DW	(((((BID_COM & $7F) * 8) + 5) + (1 << (RAMLOC - 12))) << 4) | $A
-	.DW	(((((BID_COM & $7F) * 8) + 6) + (1 << (RAMLOC - 12))) << 4) | $A
-	.DW	(((((BID_COM & $7F) * 8) + 7) + (1 << (RAMLOC - 12))) << 4) | $A
+	.DW	((Z2_BANK(BID_COM) + 0) << 4) | $A
+	.DW	((Z2_BANK(BID_COM) + 1) << 4) | $A
+	.DW	((Z2_BANK(BID_COM) + 2) << 4) | $A
+	.DW	((Z2_BANK(BID_COM) + 3) << 4) | $A
+	.DW	((Z2_BANK(BID_COM) + 4) << 4) | $A
+	.DW	((Z2_BANK(BID_COM) + 5) << 4) | $A
+	.DW	((Z2_BANK(BID_COM) + 6) << 4) | $A
+	.DW	((Z2_BANK(BID_COM) + 7) << 4) | $A
 ;
 Z280_INITZ:
 ;
@@ -1609,12 +1601,16 @@ MBC_SINGLE:
 ;
 ; IF ALREADY EXECUTING IN RAM, BYPASS RAM BANK INSTALLATION
 ;
-	LD	A,TRUE
-	LD	(HB_RAMFLAG),A
 	LD	A,(HB_RAMFLAG)
 	OR	A
 	JR	NZ,HB_START1
 ;
+; IF BID_BOOT AND BID_BIOS ARE THE SAME, THEN IT IS NEVER APPROPRIATE
+; TO COPY THE HBIOS IMAGE FROM BID_BOOT TO BID_BIOS.  THIS IS TYPICALLY
+; THE CASE FOR A ROMLESS SYSTEM.
+;
+#IF (BID_BOOT != BID_BIOS)
+;
 ; INSTALL HBIOS IN RAM BANK
 ;
 	LD	A,(HB_CURBNK)
@@ -1624,24 +1620,26 @@ MBC_SINGLE:
 	LD	HL,0
 	LD	DE,0
 	LD	BC,$8000
-#IF (MEMMGR == MM_Z280)
+  #IF (MEMMGR == MM_Z280)
 	CALL	Z280_BNKCPY
-#ELSE
+  #ELSE
 	CALL	HBX_BNKCPY
-#ENDIF
+  #ENDIF
 ;
 ; TRANSITION TO HBIOS IN RAM BANK
 ;
-#IF (MEMMGR == MM_Z280)
+  #IF (MEMMGR == MM_Z280)
 	LD	A,BID_BIOS
 	LD	B,$10			; FIRST SYSTEM PDR
 	CALL	Z280_BNKSEL
 	JR	HB_START1
-#ELSE
+  #ELSE
 	LD	A,BID_BIOS		; BIOS BANK ID
 	LD	IX,HB_START1		; EXECUTION RESUMES HERE
 	CALL	HBX_BNKCALL		; CONTINUE IN RAM BANK, DO NOT RETURN
 	HALT				; WE SHOULD NOT COME BACK HERE!
+  #ENDIF
+;
 #ENDIF
 ;
 HB_RAMFLAG	.DB	FALSE		; INITIALLY FALSE, SET TO TRUE BELOW AFTER RAM TRANSITION
@@ -1676,7 +1674,7 @@ HB_START1:				; BNKCALL ARRIVES HERE, BUT NOW RUNNING IN RAM BANK
 	; HL IS TOP 16 BITS OF PHYSICAL ADDRESS OF IVT
 	; IVT *MUST* BE ON A 4K BOUNDARY
 	LD	C,Z280_VPR
-	LD	HL,0 + ((((BID_BIOS & $7F) * 8) + (1 << (RAMLOC - 12))) << 4) + (Z280_IVT >> 8)
+	LD	HL,0 + (((PBANK(BID_BIOS) << 15) + Z280_IVT) >> 8)
 	LDCTL	(C),HL
 #ENDIF
 ;
@@ -2672,13 +2670,13 @@ HB_CKBNK:
 	LD	BC,1			; DECREMENT VALUE
 	XOR	A			; ZERO ACCUM
 HB_CKBNK1:
-#IF (MEMMGR == MM_Z280)
+    #IF (MEMMGR == MM_Z280)
 	LD	D,A			; WORKING VALUE TO D
 	LDUD	A,(HL)			; GRAB NEXT BYTE FROM USER SPACE
 	ADD	A,D			; ADD NEXT BYTE
-#ELSE
+    #ELSE
 	ADD	A,(HL)			; ADD NEXT BYTE
-#ENDIF
+    #ENDIF
 	OR	A			; CLEAR CARRY
 	SBC	HL,BC			; DECREMENT
 	JR	NC,HB_CKBNK1		; LOOP TILL DONE
@@ -5791,7 +5789,7 @@ Z280_BNKSEL:
 	LDCTL	HL,(C)			; GET CURRENT I/O PAGE
 	PUSH	HL			; SAVE IT
 	LD	L,$FF			; NEW I/O PAGE
-	LDCTL	(C),HL
+	LDCTL	(C),HL			; IMPLEMENT
 ;
 	; CONVERT BANK ID TO TOP 12 BITS OF PHYSICAL ADDRESS
 	; WITH $0A IN THE LOW ORDER NIBBLE:
@@ -5802,8 +5800,10 @@ Z280_BNKSEL:
 	MULTU	A,$80			; HL=0R00 0BBB B000 0000
 	BIT	6,H			; RAM BIT SET?
 	JR	Z,Z280_BNKSEL2		; IF NOT, ALL DONE
-	RES	6,H			; OTHERWISE, MOVE RAM BIT
-	SET	RAMLOC-16,H		; HL=0000 RBBB B000 0000
+	RES	6,H			; OTHERWISE, REMOVE RAM BIT
+	LD	A,RAMBIAS >> 6		; RAM OFFSET (TOP 8 BITS)
+	OR	H			; RECOMBINE
+	LD	H,A			; AND PUT BACK IN H
 ;
 Z280_BNKSEL2:
 ;
@@ -6051,10 +6051,12 @@ Z2DMAADR1:
 	; MOVE THE RAM/ROM BIT.
 	; RCBUS DMA HI=0000 RBBB BAAA 1111 LO=1111 AAAA AAAA AAAA
 	; ZZ80MB DMA HI=R000 0BBB BAAA 1111 LO=1111 AAAA AAAA AAAA
-	BIT	6,H
-	JR	Z,Z2DMAADR2
-	RES	6,H
-	SET	RAMLOC-16,H
+	BIT	6,H			; RAM BIT SET?
+	JR	Z,Z2DMAADR2		; IF NOT, ALL DONE
+	RES	6,H			; OTHERWISE, REMOVE RAM BIT
+	LD	A,RAMBIAS >> 6		; RAM OFFSET (TOP 8 BITS)
+	OR	H			; RECOMBINE
+	LD	H,A			; AND PUT BACK IN H
 ;
 Z2DMAADR2:
 	PUSH	HL			; SAVE IT FOR NOW
@@ -6943,7 +6945,6 @@ PS_PRTDT:
 	BIT	7,A			; FLOPPY BIT SET?
 	LD	HL,PS_DTFLOP		; ASSUME FLOPPY
 	JP	NZ,PS_PRT18		; IF FLOPPY, JUMP AHEAD
-
 	LD	C,E
 	LD	DE,PS_DTHARD
 	LD	A,00001111B
@@ -7240,10 +7241,9 @@ PS_SOUND:
 	LD	E,BF_SNDQ_DEV
 	RST	08
 	PUSH	BC
-	LD	C,B
-	LD	A,11110000B		; TYPE IS IN UPPER NIBBLE
+	LD	A,B
 	LD	DE,PS_SDSN76489
-	CALL	PRTIDXMSK
+	CALL	PRTIDXDEA
 	CALL	PS_PAD18
 	POP	BC
 ;
@@ -7268,9 +7268,8 @@ PS_SOUND:
 ;
 PS_PRTDEV:
 	EX	DE,HL
-	LD	C,H
-	LD	A,11110000B		; TYPE IS IN UPPER NIBBLE
-	CALL	PRTIDXMSK
+	LD	A,H			; TYPE ID
+	CALL	PRTIDXDEA		; PRINT TYPE LABEL
 	LD	A,L			; UNIT NUMBER
 	CALL	PRTDECB			; PRINT NUM, ASSUME 1 CHAR
 	CALL	PC_COLON		; PRINT COLON

Source/HBIOS/hbios.inc

@@ -303,20 +303,20 @@ MID_HDNEW	.EQU	10
 ; CHAR DEVICE IDS
 ;
 CIODEV_UART	.EQU	$00
-CIODEV_ASCI	.EQU	$10
-CIODEV_TERM	.EQU	$20
-CIODEV_PRPCON	.EQU	$30
-CIODEV_PPPCON	.EQU	$40
-CIODEV_SIO	.EQU	$50
-CIODEV_ACIA	.EQU	$60
-CIODEV_PIO	.EQU	$70
-CIODEV_UF	.EQU	$80
-CIODEV_DUART	.EQU	$90
-CIODEV_Z2U	.EQU	$A0
-CIODEV_LPT	.EQU	$B0
-CIODEV_ESPCON	.EQU	$C0
-CIODEV_ESPSER	.EQU	$D0
-CIODEV_SCON	.EQU	$E0
+CIODEV_ASCI	.EQU	$01
+CIODEV_TERM	.EQU	$02
+CIODEV_PRPCON	.EQU	$03
+CIODEV_PPPCON	.EQU	$04
+CIODEV_SIO	.EQU	$05
+CIODEV_ACIA	.EQU	$06
+CIODEV_PIO	.EQU	$07
+CIODEV_UF	.EQU	$08
+CIODEV_DUART	.EQU	$09
+CIODEV_Z2U	.EQU	$0A
+CIODEV_LPT	.EQU	$0B
+CIODEV_ESPCON	.EQU	$0C
+CIODEV_ESPSER	.EQU	$0D
+CIODEV_SCON	.EQU	$0E
 ;
 ; SUB TYPES OF CHAR DEVICES
 ;
@@ -328,51 +328,51 @@ CIODEV_SCON	.EQU	$E0
 ; DISK DEVICE IDS
 ;
 DIODEV_MD	.EQU	$00
-DIODEV_FD	.EQU	$10
-DIODEV_RF	.EQU	$20
-DIODEV_IDE	.EQU	$30
-DIODEV_ATAPI	.EQU	$40
-DIODEV_PPIDE	.EQU	$50
-DIODEV_SD	.EQU	$60
-DIODEV_PRPSD	.EQU	$70
-DIODEV_PPPSD	.EQU	$80
-DIODEV_HDSK	.EQU	$90
-DIODEV_PPA	.EQU	$A0
-DIODEV_IMM	.EQU	$B0
-DIODEV_SYQ	.EQU	$C0
-DIODEV_CHUSB	.EQU	$D0
-DIODEV_CHSD	.EQU	$E0
+DIODEV_FD	.EQU	$01
+DIODEV_RF	.EQU	$02
+DIODEV_IDE	.EQU	$03
+DIODEV_ATAPI	.EQU	$04
+DIODEV_PPIDE	.EQU	$05
+DIODEV_SD	.EQU	$06
+DIODEV_PRPSD	.EQU	$07
+DIODEV_PPPSD	.EQU	$08
+DIODEV_HDSK	.EQU	$09
+DIODEV_PPA	.EQU	$0A
+DIODEV_IMM	.EQU	$0B
+DIODEV_SYQ	.EQU	$0C
+DIODEV_CHUSB	.EQU	$0D
+DIODEV_CHSD	.EQU	$0E
 ;
 ; RTC DEVICE IDS
 ;
 RTCDEV_DS	.EQU	$00		; DS1302
-RTCDEV_BQ	.EQU	$10		; BQ4845P
-RTCDEV_SIMH	.EQU	$20		; SIMH
-RTCDEV_INT	.EQU	$30		; PERIODIC INT TIMER
-RTCDEV_DS7	.EQU	$40		; DS1307 (I2C)
-RTCDEV_RP5	.EQU	$50		; RP5C01
+RTCDEV_BQ	.EQU	$01		; BQ4845P
+RTCDEV_SIMH	.EQU	$02		; SIMH
+RTCDEV_INT	.EQU	$03		; PERIODIC INT TIMER
+RTCDEV_DS7	.EQU	$04		; DS1307 (I2C)
+RTCDEV_RP5	.EQU	$05		; RP5C01
 ;
 ; DSKY DEVICE IDS
 ;
 DSKYDEV_ICM	.EQU	$00		; Intersil ICM7218
-DSKYDEV_PKD	.EQU	$10		; Intel P8279
-DSKYDEV_H8P	.EQU	$20		; Heath H8 Panel
+DSKYDEV_PKD	.EQU	$01		; Intel P8279
+DSKYDEV_H8P	.EQU	$02		; Heath H8 Panel
 ;
 ; VIDEO DEVICE IDS
 ;
 VDADEV_VDU	.EQU	$00		; ECB VDU - MOTOROLA 6545
-VDADEV_CVDU	.EQU	$10		; ECB COLOR VDU - MOS 8563
-VDADEV_GDC	.EQU	$20		; GRAPHICS DISPLAY CTLR - UPD7220
-VDADEV_TMS	.EQU	$30		; N8 ONBOARD VDA SUBSYSTEM - TMS 9918
-VDADEV_VGA	.EQU	$40		; ECB VGA3 - HITACHI HD6445
-VDADEV_VRC	.EQU	$50		; VGARC
+VDADEV_CVDU	.EQU	$01		; ECB COLOR VDU - MOS 8563
+VDADEV_GDC	.EQU	$02		; GRAPHICS DISPLAY CTLR - UPD7220
+VDADEV_TMS	.EQU	$03		; N8 ONBOARD VDA SUBSYSTEM - TMS 9918
+VDADEV_VGA	.EQU	$04		; ECB VGA3 - HITACHI HD6445
+VDADEV_VRC	.EQU	$05		; VGARC
 ;
 ; SOUND DEVICE IDS
 ;
 SNDDEV_SN76489	.EQU	$00
-SNDDEV_AY38910	.EQU	$10
-SNDDEV_BITMODE	.EQU	$20
-SNDDEV_YM2612	.EQU	$30
+SNDDEV_AY38910	.EQU	$01
+SNDDEV_BITMODE	.EQU	$02
+SNDDEV_YM2612	.EQU	$03
 ;
 ; DSKY KEYS
 ;

Source/HBIOS/hbios_env.asm

@@ -24,7 +24,11 @@
 ;
 ; Print all desired config values...
 ;
+#if (ROMSIZE > 0)
 	prtval("ROMSIZE$", ROMSIZE)
+#else
+	prtval("ROMSIZE$", RAMSIZE)
+#endif
 	prtval("CPUFAM$", CPUFAM)
 ;
 	ret

Source/HBIOS/ppp.asm

@@ -688,7 +688,7 @@ PPPSD_RESET:
 PPPSD_DEVICE:
 	LD	D,DIODEV_PPPSD		; D := DEVICE TYPE
 	LD	E,(IY+PPPSD_DEV)	; E := PHYSICAL DEVICE NUMBER
-	LD	C,%01110010		; C := ATTRIBUTES, REMOVABLE, SD CARD
+	LD	C,%00110010		; C := ATTRIBUTES, REMOVABLE, SD CARD
 	LD	H,0			; H := 0, DRIVER HAS NO MODES
 	LD	L,PPPBASE		; L := BASE I/O ADDRESS
 	XOR	A			; SIGNAL SUCCESS

Source/HBIOS/prp.asm

@@ -545,7 +545,7 @@ PRPSD_RESET:
 PRPSD_DEVICE:
 	LD	D,DIODEV_PRPSD		; D := DEVICE TYPE
 	LD	E,(IY+PRPSD_DEV)	; E := PHYSICAL DEVICE NUMBER
-	LD	C,%01110010		; C := ATTRIBUTES, REMOVABLE, SD CARD
+	LD	C,%00110010		; C := ATTRIBUTES, REMOVABLE, SD CARD
 	LD	H,0			; H := 0, DRIVER HAS NO MODES
 	LD	L,PRP_IOBASE		; L := BASE I/O ADDRESS
 	XOR	A			; SIGNAL SUCCESS

Source/HBIOS/sd.asm

@@ -932,7 +932,7 @@ SD_RESET:
 SD_DEVICE:
 	LD	D,DIODEV_SD		; D := DEVICE TYPE
 	LD	E,(IY+SD_DEV)		; E := PHYSICAL DEVICE NUMBER
-	LD	C,%01110010		; C := ATTRIBUTES, REMOVABLE, SD CARD
+	LD	C,%00110010		; C := ATTRIBUTES, REMOVABLE, SD CARD
 	LD	H,SDMODE		; H := MODE
 	LD	L,(SD_IOBASE)		; L := BASE I/O ADDRESS
 	XOR	A			; SIGNAL SUCCESS

Source/HBIOS/std.asm

@@ -583,6 +583,8 @@ BID_ROMN	.EQU	(BID_ROM0 + ROMBANKS - 1)
 BID_RAMN	.EQU	(BID_RAM0 + RAMBANKS - 1)
 ;
 #IF (ROMSIZE > 0)
+;
+; NORMAL SYSTEM WITH ROM & RAM
 ;										-- TYPICAL --
 BID_BOOT	.EQU	BID_ROM0 + 0	; BOOT BANK				0x00
 BID_IMG0	.EQU	BID_ROM0 + 1	; ROM LOADER AND FIRST IMAGES BANK	0x01
@@ -600,6 +602,9 @@ BID_USR		.EQU	BID_RAMN - 1	; USER BANK (CP/M TPA, ETC.)		0x8E
 BID_COM		.EQU	BID_RAMN - 0	; COMMON BANK, UPPER 32K		0x8F
 ;
 #ELSE
+;
+; SPECIAL CONFIGURATION FOR A ROMLESS SYSTEM
+; RAM IS POPULATED PRIOR TO ROMWBW STARTUP
 ;										-- TYPICAL --
 BID_BOOT	.EQU	BID_RAM0 + 0	; BOOT BANK				0x80
 BID_IMG0	.EQU	BID_RAM0 + 1	; ROM LOADER AND FIRST IMAGES BANK	0x81
@@ -618,10 +623,6 @@ BID_ROMDN	.EQU	$FF		; NO ROM DRIVE
 ;
 #ENDIF
 ;
-#IF (ROMSIZE == 0)
-BID_BOOT	.SET	BID_RAM0	; SPECIAL CASE ROM-LESS SYSTEM
-#ENDIF
-;
 #IF (BIOS == BIOS_WBW)
 ;
   #IF (!MDRAM)

Source/Images/Build.cmd

@@ -25,6 +25,7 @@ call BuildDisk.cmd games hd wbw_fd144 || exit /b
 echo.
 echo Building Hard Disk Images (512 directory entry format)...
 echo.
+call BuildDisk.cmd blank hd wbw_hd512 || exit /b
 call BuildDisk.cmd cpm22 hd wbw_hd512 ..\cpm22\cpm_wbw.sys || exit /b
 call BuildDisk.cmd zsdos hd wbw_hd512 ..\zsdos\zsys_wbw.sys || exit /b
 call BuildDisk.cmd nzcom hd wbw_hd512 ..\zsdos\zsys_wbw.sys || exit /b
@@ -50,6 +51,7 @@ copy /b ..\..\Binary\hd512_cpm22.img + ..\..\Binary\hd512_zsdos.img + ..\..\Bina
 echo.
 echo Building Hard Disk Images (1024 directory entry format)...
 echo.
+call BuildDisk.cmd blank hd wbw_hd1k || exit /b
 call BuildDisk.cmd cpm22 hd wbw_hd1k ..\cpm22\cpm_wbw.sys || exit /b
 call BuildDisk.cmd zsdos hd wbw_hd1k ..\zsdos\zsys_wbw.sys || exit /b
 call BuildDisk.cmd nzcom hd wbw_hd1k ..\zsdos\zsys_wbw.sys || exit /b

Source/Images/Makefile

@@ -12,13 +12,13 @@ HD512IMGS = hd512_cpm22.img hd512_zsdos.img hd512_nzcom.img \
 	hd512_cpm3.img hd512_zpm3.img hd512_ws4.img
 HD512XIMGS = hd512_z80asm.img hd512_aztecc.img hd512_hitechc.img \
 	hd512_bascomp.img hd512_fortran.img hd512_games.img \
-	hd512_tpascal.img hd512_dos65.img hd512_qpm.img
+	hd512_tpascal.img hd512_dos65.img hd512_qpm.img hd512_blank.img
 # HDIMGS += hd512_bp.img
 HD1KIMGS = hd1k_cpm22.img hd1k_zsdos.img hd1k_nzcom.img \
 	hd1k_cpm3.img hd1k_zpm3.img hd1k_ws4.img
 HD1KXIMGS = hd1k_z80asm.img hd1k_aztecc.img hd1k_hitechc.img \
 	hd1k_bascomp.img hd1k_fortran.img hd1k_games.img \
-	hd1k_tpascal.img hd1k_qpm.img
+	hd1k_tpascal.img hd1k_qpm.img hd1k_blank.img
 # HD1KIMGS += hd1k_bp.img
 
 HD512PREFIX =

Source/Images/d_blank/ReadMe.txt

@@ -0,0 +1,6 @@
+===== Blank Disk for RomWBW =====
+
+This disk is intentionally empty and just provides an empty slice
+that can be used in the concatenation of slices as desired
+
+-- WBW 3:59 PM 10/4/2023

Source/Images/diskdefs

@@ -310,6 +310,32 @@ diskdef wbw_rom1024
   os 2.2
 end
 
+# RomWBW 512KB RAM (256KB reserved, 256KB RAM Disk)
+
+diskdef wbw_ram512
+  seclen 512
+  tracks 8
+  sectrk 64
+  blocksize 2048
+  maxdir 256
+  skew 0
+  boottrk 0
+  os 2.2
+end
+
+# RomWBW 1024KB RAM (256KB reserved, 768KB RAM Disk)
+
+diskdef wbw_ram1024
+  seclen 512
+  tracks 24
+  sectrk 64
+  blocksize 2048
+  maxdir 256
+  skew 0
+  boottrk 0
+  os 2.2
+end
+
 # RomWBW 720K floppy media
 
 diskdef wbw_fd720

Source/Images/hd_blank.txt

@@ -0,0 +1,3 @@
+#
+# Blank disk template
+#

Source/Makefile

@@ -24,27 +24,57 @@ ifeq ($(UNAME), Linux)
 # uname machine strings for building Propeller
 endif
 
-SUBDIRS = HDIAG
+.PHONY: doc prop shared bp images rom zrc zzrc
 
+all: prop shared images rom zrc zzrc
+
+doc:
+	$(MAKE) --directory Doc $(ACTION)
+
+prop:
 ifeq ($(BUILDPROP), 1)
-SUBDIRS += Prop
+	$(MAKE) --directory Prop $(ACTION)
 else
-$(info "Builing Propeller is not supported on this $(ARCH) host Linux OS")
+	$(info Builing Propeller is not supported on this $(ARCH) host Linux OS)
 endif
 
-SUBDIRS += Apps
-SUBDIRS += CBIOS
-SUBDIRS += Forth
-SUBDIRS += TastyBasic
-SUBDIRS += Fonts
-SUBDIRS += CPM22 ZCPR ZCPR-DJ ZSDOS CPM3 ZPM3 QPM
-#SUBDIRS += BPBIOS
-SUBDIRS += pSys
-SUBDIRS += RomDsk
-SUBDIRS += HBIOS
-SUBDIRS += Images
-SUBDIRS += ZRC
-SUBDIRS += ZZRC
-#SUBDIRS += Doc
-TOOLS = ../Tools
-include $(TOOLS)/Makefile.inc
+shared:
+	$(MAKE) --directory HDIAG $(ACTION)
+	$(MAKE) --directory CBIOS $(ACTION)
+	$(MAKE) --directory CPM22 $(ACTION)
+	$(MAKE) --directory QPM $(ACTION)
+	$(MAKE) --directory ZCPR $(ACTION)
+	$(MAKE) --directory ZCPR-DJ $(ACTION)
+	$(MAKE) --directory ZSDOS $(ACTION)
+	$(MAKE) --directory CPM3 $(ACTION)
+	$(MAKE) --directory ZPM3 $(ACTION)
+	$(MAKE) --directory pSys $(ACTION)
+	$(MAKE) --directory Apps $(ACTION)
+	$(MAKE) --directory Forth $(ACTION)
+	$(MAKE) --directory TastyBasic $(ACTION)
+	$(MAKE) --directory Fonts $(ACTION)
+	$(MAKE) --directory RomDsk $(ACTION)
+
+bp:
+	$(MAKE) --directory BPBIOS $(ACTION)
+
+images:
+	$(MAKE) --directory Images $(ACTION)
+
+rom:
+	$(MAKE) --directory HBIOS $(ACTION)
+
+zrc:
+	$(MAKE) --directory ZRC $(ACTION)
+
+zzrc:
+	$(MAKE) --directory ZZRC $(ACTION)
+
+
+clean: ACTION=clean
+
+clean: all
+
+diff: ACTION=diff
+
+diff: all

Source/ReadMeDoc.txt

@@ -0,0 +1,33 @@
+***********************************************************************
+***                                                                 ***
+***                          R o m W B W                            ***
+***                                                                 ***
+***                    Z80/Z180 System Software                     ***
+***                                                                 ***
+***********************************************************************
+
+This document describes the process to build the custom documentation
+for RomWBW.  The RomWBW documentation is not normally built as part of
+the full build process.  This is because it requires external tools
+to be installed.
+
+All source documents are first pre-processed with gpp to allow use of
+some global variable expansions.  Pandoc is then used to generate a
+variety of output formats.  The most significant of these are the PDF
+documents.  Pandoc invokes a Latex-type processor (LuaTeX) to
+produce the final PDF documents.
+
+Required for Windows:
+ - Pandoc (https://pandoc.org/)
+ - MiKTeX (https://miktex.org/)
+   - Install Roboto font from MiKTeX Console
+
+Required for Linux:
+ - gpp ((apt install gpp)
+ - Pandoc (dpkg -i pandoc-3.1.8-1-amd64.deb)
+ - TexLive (apt install texlive-latex-extra texlive-luatex fonts-roboto texlive-fonts-extra)
+
+The source directory for the documentation is .../Source/Doc. From this 
+directory run Build.cmd for Windows or make for Linux to create the 
+output documents.  This will create the final documents and copy them 
+to their destination directories.

Source/RomDsk/Build.cmd

@@ -31,24 +31,29 @@ copy NUL rom128_una.dat
 
 set RomApps=%RomApps1%
 
-call :MakeDisk rom256_wbw 256 0x20000 wbw
-call :MakeDisk rom256_una 256 0x20000 una
+call :MakeDisk rom256_wbw wbw_rom256 ROM_256KB 0x20000 wbw
+call :MakeDisk rom256_una wbw_rom256 ROM_256KB 0x20000 una
 
 set RomApps=%RomApps1% %RomApps2%
 
-call :MakeDisk rom512_wbw 512 0x60000 wbw
-call :MakeDisk rom512_una 512 0x60000 una
+call :MakeDisk rom512_wbw wbw_rom512 ROM_512KB 0x60000 wbw
+call :MakeDisk rom512_una wbw_rom512 ROM_512KB 0x60000 una
 
-call :MakeDisk rom1024_wbw 1024 0xE0000 wbw
-call :MakeDisk rom1024_una 1024 0xE0000 una
+call :MakeDisk rom1024_wbw wbw_rom1024 ROM_1024KB 0xE0000 wbw
+call :MakeDisk rom1024_una wbw_rom1024 ROM_1024KB 0xE0000 una
+
+call :MakeDisk ram512_wbw wbw_ram512 RAM_512KB 0x40000 wbw
+
+call :MakeDisk ram1024_wbw wbw_ram1024 RAM_1024KB 0xC0000 wbw
 
 goto :eof
 
 :MakeDisk
 set Output=%1
-set RomSize=%2
-set ImgSize=%3
-set Bios=%4
+set DiskDef=%2
+set Dir=%3
+set ImgSize=%4
+set Bios=%5
 
 echo Making ROM Disk %Output%
 
@@ -56,12 +61,12 @@ echo Making ROM Disk %Output%
 srec_cat -Generate 0 %ImgSize% --Constant 0xE5 -Output %Output%.dat -Binary || exit /b
 
 :: Populate the disk image via cpmtools
-cpmcp -f wbw_rom%RomSize% %Output%.dat ROM_%RomSize%KB/*.* 0: || exit /b
-for %%f in (%RomApps%) do cpmcp -f wbw_rom%RomSize% %Output%.dat ../../Binary/Apps/%%f.com 0: || exit /b
-cpmcp -f wbw_rom%RomSize% %Output%.dat ..\cpm22\cpm_%Bios%.sys 0:cpm.sys || exit /b
-cpmcp -f wbw_rom%RomSize% %Output%.dat ..\zsdos\zsys_%Bios%.sys 0:zsys.sys || exit /b
+cpmcp -f %DiskDef% %Output%.dat %Dir%/*.* 0: || exit /b
+for %%f in (%RomApps%) do cpmcp -f %DiskDef% %Output%.dat ../../Binary/Apps/%%f.com 0: || exit /b
+cpmcp -f %DiskDef% %Output%.dat ..\cpm22\cpm_%Bios%.sys 0:cpm.sys || exit /b
+cpmcp -f %DiskDef% %Output%.dat ..\zsdos\zsys_%Bios%.sys 0:zsys.sys || exit /b
 
 :: Mark all disk files R/O for safety
-cpmchattr -f wbw_rom%RomSize% %Output%.dat r 0:*.* || exit /b
+cpmchattr -f %DiskDef% %Output%.dat r 0:*.* || exit /b
 
 goto :eof

Source/RomDsk/Makefile

@@ -1,4 +1,4 @@
-OBJECTS = rom128_wbw.dat rom128_una.dat rom256_wbw.dat rom256_una.dat rom512_wbw.dat rom512_una.dat rom1024_wbw.dat rom1024_una.dat
+OBJECTS = rom128_wbw.dat rom128_una.dat rom256_wbw.dat rom256_una.dat rom512_wbw.dat rom512_una.dat rom1024_wbw.dat rom1024_una.dat ram512_wbw.dat ram1024_wbw.dat
 OTHERS=*.dat
 
 TOOLS = ../../Tools
@@ -9,19 +9,34 @@ include $(TOOLS)/Makefile.inc
 ROMAPPS1 := assign mode rtc syscopy xm
 ROMAPPS2 := fdu format survey sysgen talk timer cpuspd
 
-rom256_%.dat: ROMSIZ=256
-rom512_%.dat: ROMSIZ=512
-rom1024_%.dat: ROMSIZ=1024
+# rom256_%.dat: ROMSIZ=256
+# rom512_%.dat: ROMSIZ=512
+# rom1024_%.dat: ROMSIZ=1024
+
+rom256_%.dat: DISKDEF=wbw_rom256
+rom512_%.dat: DISKDEF=wbw_rom512
+rom1024_%.dat: DISKDEF=wbw_rom1024
+ram512_%.dat: DISKDEF=wbw_ram512
+ram1024_%.dat: DISKDEF=wbw_ram1024
+
+rom256_%.dat: DIR=ROM_256KB
+rom512_%.dat: DIR=ROM_512KB
+rom1024_%.dat: DIR=ROM_1024KB
+ram512_%.dat: DIR=RAM_512KB
+ram1024_%.dat: DIR=RAM_1024KB
 
 rom256_%.dat: IMGSIZ=0x20000
 rom512_%.dat: IMGSIZ=0x60000
 rom1024_%.dat: IMGSIZ=0xE0000
+ram512_%.dat: IMGSIZ=0x40000
+ram1024_%.dat: IMGSIZ=0xC0000
 
 rom256_%.dat: ROMAPPS=$(ROMAPPS1)
 rom512_%.dat rom1024_%.dat: ROMAPPS=$(ROMAPPS1) $(ROMAPPS2)
+ram512_%.dat ram1024_%.dat: ROMAPPS=$(ROMAPPS1) $(ROMAPPS2)
 
-rom%_wbw.dat: BIOS=wbw
-rom%_una.dat: BIOS=una
+%_wbw.dat: BIOS=wbw
+%_una.dat: BIOS=una
 
 rom128_%.dat:
 	touch $@
@@ -29,8 +44,8 @@ rom128_%.dat:
 %.dat:
 	### Making ROM Disk $@
 	srec_cat -Generate 0 $(IMGSIZ) --Constant 0xE5 -Output $@ -Binary
-	$(CPMCP) -f wbw_rom$(ROMSIZ) $@ ROM_$(ROMSIZ)KB/*.* 0:
-	for i in $(ROMAPPS) ; do $(CPMCP) -f wbw_rom$(ROMSIZ) $@ ../../Binary/Apps/$$i.com 0: ; done
-	$(CPMCP) -f wbw_rom$(ROMSIZ) $@ ../CPM22/cpm_$(BIOS).sys 0:cpm.sys
-	$(CPMCP) -f wbw_rom$(ROMSIZ) $@ ../ZSDOS/zsys_$(BIOS).sys 0:zsys.sys
-	$(CPMCHATTR) -f wbw_rom$(ROMSIZ) $@ r 0:*.*
+	$(CPMCP) -f $(DISKDEF) $@ $(DIR)/*.* 0:
+	for i in $(ROMAPPS) ; do $(CPMCP) -f $(DISKDEF) $@ ../../Binary/Apps/$$i.com 0: ; done
+	$(CPMCP) -f $(DISKDEF) $@ ../CPM22/cpm_$(BIOS).sys 0:cpm.sys
+	$(CPMCP) -f $(DISKDEF) $@ ../ZSDOS/zsys_$(BIOS).sys 0:zsys.sys
+	$(CPMCHATTR) -f $(DISKDEF) $@ r 0:*.*

Source/RomDsk/RAM_1024KB/COPY.UPD

@@ -0,0 +1,43 @@
+                                                        11 Dec 88
+
+Some changes have been made to COPY since the manual was written.  
+Comparison of dates with Existence testing ON has been changed to 
+use the Creation date when no Modified date exists, and print 
+"Undated" when neither exists, yet both source and destination 
+disks support file date stamping.  Additionally, the /X option 
+has been re-defined, and a new /R option has been added to 
+Version 1.4.  Please replace Paragraph 4.1.2.9 on page 55 of your 
+ZSDOS manual with the following two paragraphs describing the new 
+options.
+
+
+4.1.2.9.1  ERASE SOURCE FILE AFTER COPY.
+
+When you want to "move" a file from one area to another, the "X" 
+option may be used.  This option causes a file or group of files 
+to be copied in the manner described by the default or specified 
+options, but after the copy and optional verify, the source file 
+or files are erased.  You will be notified that the file has been 
+erased by the status "(X)" being printed on your console.  To 
+minimize the possibility of deleting a good file when errors 
+exist in the copy, the Verify option should always be active, 
+either by default, or specified.  When Verify is active, any 
+errors detected will disable the "X" option for that file so that 
+a good source file will not be deleted.  The "X" option has no 
+configurable value, and is always assumed to be "Off" requiring 
+the option in the command line list to be effective.
+
+
+4.1.2.9.2  COPY ONLY FILES WHICH EXIST (REPLACE).
+
+Occasionally, you may wish to update selected files to a destina- 
+tion in a simpler manner than naming each file, or using the 
+Inspect option.  The "R" (Replace) option, when active, tells 
+COPY to transfer only files which exist on the destination direc- 
+tory.  If the Archive option (A) is added in conjunction with the 
+Replace option, only files which have not been archived, AND 
+already exist on the destination will be archived.  It should be 
+noted that the No Replacement (N) option is incompatible with 
+both the Replace and Archive options, and is disabled when either 
+"R" or "A" are active.
+

Source/RomDsk/RAM_1024KB/DDTZ.DOC

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

Source/RomDsk/RAM_1024KB/FA16.DOC

@@ -0,0 +1,264 @@
+
+                            FILEATTR
+                           Version 1.6
+
+                          Gene Pizzetta
+                        January 18, 1992
+      A ZSDOS utility, copyright (c) 1988 by Carson Wilson.
+
+
+FILEATTR (FA) is a utility that allows rapid settin, resetting, 
+or displaying of file attributes under ZSDOS, ZRDOS, and CP/M 
+2.2.  Several additional features are available under ZCPR3, 
+including error flag setting, error handler invocation, an 
+enhanced display, and better error detection.
+
+FA will not run under CP/M 3.0 or Z3PLUS.
+
+USAGE:
+
+     FILEATTR {dir:}{afn} {{/}options}
+
+If a DIR or DU specification is not given, the current directory 
+is assumed (under vanilla CP/M only the drive is significant).  
+If no ambiguous or unambiguous filename is given, all files 
+("*.*") are matched.
+
+If no attribute options are given, FILEATTR merely displays the 
+current state of each file's attributes.  Files are displayed in 
+the order that they appear in the directory.
+
+Once operation begins, FA cannot be aborted by the user.  If a ^C 
+is entered at the keyboard, all screen output stops, but file 
+attribute operations continue to completion.  If that was not the 
+case, attributes might be set on some entries for a file and not 
+on others.  Nevertheless, suppressing screen output speeds things 
+up a bit.
+
+OPTIONS:  A leading slash is required unless the option list is 
+the second parameter on the command line.  Options may be 
+separated by spaces, commas, or nothing at all.
+
+ATTRIBUTE OPTIONS:  These options set (turn on) corresponding 
+attributes on files matching the file specification.  Attributes 
+not specified by an attribute option remain unchanged.
+
+If the option is preceded by a minus ("-") or by an "N", the 
+corresponding attribute is reset (turned off).
+
+     1    F1.  This is a user attribute which has no predefined 
+          meaning.
+
+     P    Public (f2).  Under ZSDOS, when this attribute is set, 
+          a file is available from any user area of the disk on 
+          which it resides.  A file cannot be made public if 
+          another file with the same name exists in any other 
+          user area on that drive.  In that case FA will issue an 
+          error message and leave the attribute off.
+
+     D    Inhibit access datestamp (f3).  Under ZSDOS, when this 
+          attribute is set, the file's access datestamp will not 
+          be updated, which may speed file access slightly.  If 
+          the attribute is turned off, normal access datestamping 
+          resumes.
+
+     4    F4.  This is a user attribute which has no predefined 
+          meaning.
+
+     W    Wheel protect (f8).  Under ZSDOS, when this attribute 
+          is set, the file becomes read-only when the wheel byte 
+          is off and cannot be erased.  If the wheel byte is on, 
+          the file can be erased normally.
+
+     R    Read only (t1).  When this attribute is set, the file 
+          cannot be erased or modified by most programs.
+
+     S    System (t2).  When this attribute is set, the file 
+          becomes a "hidden" file that will not be found by most 
+          directory programs or by most well-behaved utilities 
+          that accept ambiguous filenames.  (FA must find system 
+          files, of course.)
+
+     A    Archive (t3).  When this attribute is set, it signals 
+          some archival programs that the file has not been 
+          modified since it was last backed up.  If a file is 
+          modified, ZSDOS and ZRDOS turn this attribute off.  
+          CP/M does not fully support this attribute, however.
+
+OTHER OPTIONS:  These options affect only the screen display.
+
+     Q    Quiet mode.  Console output is suppressed unless there 
+          is an error.  All other operations are performed 
+          normally.
+
+     X    Screen paging off.  With this option, screen paging is 
+          turned off.  The screen can still be paused by pressing 
+          any key except ^C.
+
+ERRORS:  Under ZCPR3, errors will cause FA to set the program 
+error flag and to invoke the error handler.  The error flag will 
+be set to the following values:
+      2   invalid directory specification
+      4   miscellaneous (conflicting file, no files on disk)
+     10   no matching files found (no error handler)
+     18   Disk read-only
+     19   Invalid option
+
+For error code 10 (no matching files found), the error flag is 
+set, but the error handler is not called.
+
+In addition, under ZCPR 3.3 and above, an invalid directory 
+specification will abort FA to the error handler, but no message 
+is printed.
+
+The following error messages may be seen:
+
+Conflicting entry, can't set public attribute
+     If there are files with the same name in other user areas of 
+     the disk, the public attribute cannot be set.
+
+No files on disk
+     The disk directory is empty.
+
+Bad Option: /o
+     The command line option shown is unknown to FILEATTR.
+
+Drive R/O
+     The drive is set to read-only by the operating system and 
+     attributes cannot be changed.
+
+CP/M version 2.x required
+     FILEATTR will not run on this system.
+
+BIOS write error near directory sector n
+     An error occurred at or near the given directory sector, 
+     which is expressed as a decimal offset from the beginning of 
+     the directory.
+
+BIOS set track detected - FA aborting
+     A background program is attempting to modify the current 
+     track setting.  The background program must be removeed 
+     before running FA again.
+     
+Not Wheel
+     Under ZCPR3 the wheel byte must be set before FILEATTR can 
+     be run.
+
+CONFIGURATION:  While no installation is necessary, all options 
+can be set as defaults, if you prefer, using ZCNFG.  The 
+configuration options are fully explained on the ZCNFG help 
+screens.
+
+It is best not to change the name of the configuration file.  Its 
+special name assures that ZCNFG will always find the correct CFG 
+file, even if the name of FA has been changed or if more than one 
+version of FA is online.
+
+HISTORY:
+
+Version 1.6 -- April 14, 1991 -- Gene Pizzetta
+     Now displays target DU and directory name in summary.  Fixed 
+     bug that caused "GO" to be displayed as program name, if it 
+     was re-invoked with the GO command.
+
+Version 1.5 -- March 27, 1991 -- Gene Pizzetta
+     Now calls CP/M version checking routine (it was there, but 
+     it wasn't called).  Changed error codes:  10, no matching 
+     files found.  "No files on disk" error now gets 
+     miscellaneous error code (4).  Error 10 does not invoke 
+     error handler.  Not released.
+
+Version 1.4 -- March 20, 1991 -- Gene Pizzetta, Howard Goldstein
+     Code to check module data byte (S2) was replaced by Howard 
+     Goldstein's elegant solution which uses a "true" extent 
+     number:  ((data_mod * 32) + extent).  Entering a ^C no 
+     longer really aborts FILEATTR; instead FA immediately prints 
+     "Wait..." on the screen, turns off paging, turns on quiet 
+     mode, sets the results flag, and finishes what it was doing. 
+     All this is to prevent unexpected results when only some of 
+     a file's directory entries are changed.  All errors 
+     including a conflicting file found during a PUBLIC request, 
+     now set the program error flag and invoke the error handler 
+     so an active SUBMIT or ZEX script can be aborted.  The error 
+     flag will have the following values:  2, invalid directory; 
+     10, no files on disk; 18, disk is read-only; 19, invalid 
+     option; 4, all other errors.  If no matching files are 
+     found, the program error flag will be set to FFh, but the 
+     error handler will not be invoked.  A few other code changes 
+     were made, including a check for CP/M-Plus, under which 
+     FILEATTR will not work.  Not released.
+
+Version 1.3 -- February 22, 1991 -- Gene Pizzetta
+     Corrected bug that caused faulty operation on large files:  
+     The module data byte (S2) byte was not being checked, so 
+     such files appeared 2 or more times in the directory display 
+     and the public routine was often not finding conflicting 
+     files.  Added configuration byte and command line option (X) 
+     for screen paging (paging is suppressed in quiet mode).  
+     Made quiet mode responsive to ZCPR quiet flag and changed Q 
+     command line option to toggle.  Usage screen reflects 
+     current effect of X and Q toggles.  Attribute configuration 
+     area changed to be compatible with ZCNFG TOGL3 routine.  
+     Actions of D and ND options reversed so they work the same 
+     as the others.  Added configuration byte for printing 
+     summary line even in quiet mode, as suggested by Howard 
+     Goldstein.  Removed blank lines from screen display, 
+     allowing three more filenames to be shown.  Removed tabs 
+     from usage screen so PRINT and PSTR are not needed.  
+     Eliminated leading zero from user number display.  Now 
+     prints "file" instead of "files" in summary when only 1 
+     matching file is found.  Ditto for attribute(s) altered.
+
+Version 1.2 -- November 30, 1988 -- Carson Wilson
+     Fixed bug of no program name display when FILEATTR's name 
+     was 8 characters long.
+
+Version 1.1 -- October 30, 1988 -- Carson Wilson
+     Now wildcards the command forms "FA d: /options" and "FA d: 
+     options."
+
+Version 1.0 -- September 26, 1988 -- Carson Wilson
+     If a filespec is given, no leading slash is required before 
+     the options.  Link with version 4 libraries.  Removed /X 
+     option--ZSDOS 10T always closes the first extent when a file 
+     is written to.  Changed summary to read "files matched".
+
+Version 0.9 -- July 7, 1988 -- Carson Wilson
+     Increased length of search FCB (AMBFIL) by one byte.  Set up 
+     AMBFIL as '?' + 35 binary 0's.  ZRDOS and CP/M zero the 
+     drive byte (FCB+0) during search next calls, so reinitialize 
+     it to '?' before rescanning the directory.  PROGID now 
+     prints stored name on GO/JUMP.
+
+Version 0.8 -- June 26, 1988 -- Carson Wilson
+     Use SYSLIB PRINT for help display.  VPRINT does not expand 
+     tabs.  Now traps disk track changes at the BIOS level.  
+     Allows '-' as well as 'N' for "negate option." Auto- 
+     wildcards FCB1 for attribute set as well as display.
+
+Version 0.7 -- May 24, 1988 -- Carson Wilson
+     Cosmetic changes to help, display.  Made public routines 
+     faster by 1/2 directory scan average.  Consolidated file 
+     attribute setting/resetting routines for efficiency and 
+     clarity.
+
+Version 0.6 -- May 14, 1988 -- Carson Wilson
+     Changed "Publ" to "Publc" and "Priv" to "Privt".  Added Q 
+     and X options, made options installable.  Added test for bad 
+     ZCPR directory & chain to error handler.
+
+Version 0.5 -- May 4, 1988 -- Carson Wilson
+     Fixed bug at CHKRO inherited from MAKE.ASM.  Uses Bridger 
+     Mitchell's FRESET to reset disks.  Uses ZCPR invocation name 
+     in signon, help, etc.  Added F4 attribute.  Now includes all 
+     valid ZSDOS attributes.  Help now fully "smart" under ZCPR.  
+     Reworked VID3.Z80 and VID4.Z80 from VLIB11 and moved them 
+     into FA.Z80 (see end of file).  Put STNDOUT mode ON by 
+     default at beginning of each attribute display sequence for 
+     faster ZCPR displays.
+
+Version 0.4 -- April 27, 1988 -- Carson Wilson
+     Tests for matching files at other user areas before setting 
+     the public attribit.
+
+Version 0.3 -- April 26, 1988 -- Carson Wilson

Source/RomDsk/RAM_1024KB/FA16A.FOR

@@ -0,0 +1,6 @@
+An update and bug-fix of FILEATTR (FA), a ZSDOS utility that 
+allows rapid setting, resetting, or displaying of file attributes 
+under ZSDOS, ZRDOS, and CP/M 2.2.  Several additional features 
+are available under ZCPR3, including error flag setting, error 
+handler invocation, and an enhanced display.  Version 1.6A adds 
+documentation; otherwise, same as 1.6.

Source/RomDsk/RAM_1024KB/FA16CFG.TXT

@@ -0,0 +1,39 @@
+
+Option Q -- If the ZCPR quiet flag is set, FILEATTR will always default to 
+quiet mode.  To make quiet mode the default at all times, even when running 
+under CP/M, set this configuration option to "Yes".  Whatever is selected 
+here can be toggled with the command line "Q" option.
+
+Option X -- A "Yes" will cause FILEATTR to page screen output by default.  
+A "No" will default to continuous scrolling.  The chosen default can be 
+toggled with the command line "X" option.  Screen paging is always turned 
+off in quiet mode.
+
+Option R -- As distributed, FILEATTR prints nothing to the screen when it 
+is operating in quiet mode.  If this configuration option is "Yes", the 
+results summary line that gives the number of matching files found and the 
+number of attributes changed will be printed even in quiet mode.
+
+Option S -- Enter the number of lines on your video display screen.  Under 
+ZCPR 3.3 and higher, the number of screen lines for paging is obtained from 
+the environment descriptor.  This configuration parameter is used only if 
+running under CP/M.
+
+
+                      Attribute Configuration Options
+
+As distributed, FILEATTR will not change any file attribute unless 
+explicitly commanded to do so by a command line option.  To configure 
+FILEATTR to turn a file attribute ON or OFF by default, toggle the 
+appropriate configuration selection.
+
+For example, to make FILEATTR set all matching files to Public by default, 
+change the "Public attribute" setting to "Turn On".  Then FILEATTR will set 
+the specified files to Public unless the /NP command line option is given 
+(which would cause the files to be set to Private).  Since there is no 
+command which tells FILEATTR not to change an attribute, however, the 
+program will now insist on turning the Public attribute either on (default) 
+or off (through the /NP option).
+
+Most users will have neither need nor desire to change the configuration 
+default as distributed which will "Leave As-Is" all matching files.