Functional PPA Driver

IMM Driver has rational timeouts now.  It also lights the MG014 LED during activity.
The PPA skeleton just attempts to determine if the PPA interface is present.  It does not attempt any I/O.

Doc/ChangeLog.txt

@@ -6,6 +6,8 @@ Version 3.3
 - A?C: Support for Z80-Retro SD interface
 - WBW: Support per-drive floppy configuration
 - WBW: Support for Bill Shen's VGARC
+- WBW: Support for MG014 Parallel Port module + printer
+- WBW: Support for Zip Drive on emm interface (much inspiration from Alan Cox)
 
 Version 3.2.1
 -------------

ReadMe.md

@@ -3,7 +3,7 @@
 **RomWBW ReadMe** \
 Version 3.3 \
 Wayne Warthen  ([wwarthen@gmail.com](mailto:wwarthen@gmail.com)) \
-03 May 2023
+02 Jun 2023
 
 # Overview
 

ReadMe.txt

@@ -1,6 +1,6 @@
 RomWBW ReadMe
 Wayne Warthen (wwarthen@gmail.com)
-03 May 2023
+02 Jun 2023
 
 
 

Source/Apps/assign.asm

@@ -1918,9 +1918,9 @@ dev06	.db	"SD",0
 dev07	.db	"PRPSD",0
 dev08	.db	"PPPSD",0
 dev09	.db	"HDSK",0
-dev10	.equ	devunk
-dev11	.equ	devunk
-dev12	.equ	devunk
+dev10	.db	"PPA",0
+dev11	.db	"IMM",0
+dev12	.db	"SYQ",0
 dev13	.equ	devunk
 dev14	.equ	devunk
 dev15	.equ	devunk

Source/CBIOS/cbios.asm

@@ -2929,6 +2929,14 @@ DRV_INIT3:
 	RET
 ;
 DRV_INIT3A:
+	; CHECK FOR HARD DISK REMOVABLE CARTRIDGE DRIVES
+	CP	DIODEV_PPA		; PPA (ZIP DRIVE) IS REMOVABLE
+	JR	Z,DRV_INIT3B		; IF SO, SKIP MEDIA CHECK
+	CP	DIODEV_IMM		; IMM (ZIP DRIVE) IS REMOVABLE
+	JR	Z,DRV_INIT3B		; IF SO, SKIP MEDIA CHECK
+	CP	DIODEV_SYQ		; IMM (ZIP DRIVE) IS REMOVABLE
+	JR	Z,DRV_INIT3B		; IF SO, SKIP MEDIA CHECK
+
 	; CHECK FOR ACTIVE AND RETURN IF NOT
 	PUSH	DE			; SAVE DE (HARD DISK VOLUME COUNTER)
 	PUSH	HL			; SAVE DRIVE LIST PTR
@@ -2944,6 +2952,7 @@ DRV_INIT3A:
 
 	RET	NZ			; IF NO MEDIA, JUST RETURN
 
+DRV_INIT3B:
 	; IF ACTIVE...
 	LD	(HL),C			; SAVE UNIT NUM IN LIST
 	INC	HL			; BUMP PTR
@@ -3392,9 +3401,9 @@ DEV06	.DB	"SD$"
 DEV07	.DB	"PRPSD$"
 DEV08	.DB	"PPPSD$"
 DEV09	.DB	"HDSK$"
-DEV10	.EQU	DEVUNK
-DEV11	.EQU	DEVUNK
-DEV12	.EQU	DEVUNK
+DEV10	.DB	"PPA$"
+DEV11	.DB	"IMM$"
+DEV12	.DB	"SYQ$"
 DEV13	.EQU	DEVUNK
 DEV14	.EQU	DEVUNK
 DEV15	.EQU	DEVUNK

Source/CPM3/boot.z80

@@ -181,6 +181,14 @@ dinit3:
 	ret
 ;
 dinit3a:
+	; check for hard disk removable cartridge drives
+	cp	0A0h			; ppa (zip drive) is removable
+	jr	z,dinit3b		; if so, skip media check
+	cp	0B0h			; imm (zip drive) is removable
+	jr	z,dinit3b		; if so, skip media check
+	cp	0C0h			; syq (syquest drive) is removable
+	jr	z,dinit3b		; if so, skip media check
+
 	; check for active and return if not
 	push	de			; save de (hard disk volume counter)
 	push	hl			; save drive list ptr
@@ -195,7 +203,8 @@ dinit3a:
 	pop	de			; restore de
 	
 	ret	nz			; if no media, just return
-	
+
+dinit3b:
 	; if active...
 	ld	(hl),c			; save unit num in list
 	inc	hl			; bump ptr

Source/Doc/Applications.md

@@ -889,6 +889,28 @@ written in C and requires SDCC to compile. As such it is not part of
 the RomWBW build process. However, the full project and source code is
 found in the [FAT GitHub Repository](https://github.com/wwarthen/FAT).
 
+## Known Issues
+
+CP/M (and workalike) OSes have significant restrictions on filename
+characters.  The FAT application will block any attempt to create a
+file on the CP/M filesystem containing any of these prohibited
+characters:
+
+|         `< > . , ; : = ? * [ ] _ % | ( ) / \`
+
+The operation will be aborted with "`Error: Invalid Path Name`" if such
+a filename character is encountered.
+
+Since MS-DOS does allow some of these characters, you can have
+issues when copying files from MS-DOS to CP/M if the MS-DOS filenames
+use these characters.  Unfortunately, FAT is not yet smart enough to
+substitute illegal characters with legal ones.  So, you will need to
+clean the filenames before trying to copy them to CP/M.
+
+The FAT application does try to detect the scenario where you are
+copying a file to itself.  However, this detection is not perfect and
+can corrupt a file if it occurs.  Be careful to avoid this.
+
 `\clearpage`{=latex}
 
 # TUNE

Source/Doc/UserGuide.md

@@ -3896,10 +3896,12 @@ may be discovered by RomWBW in your system.
 | DSKY      | System   | Keypad & Display                                       |
 | DSRTC     | RTC      | Maxim DS1302 Real-Time Clock w/ NVRAM                  |
 | DUART     | Char     | SCC2681 or compatible Dual UART                        |
-| FD        | Disk     | 8272 of compatible Floppy Disk Controller              |
+| EMM       | Disk     | Disk drive on Parallel Port emm interface (Zip Drive)  |
+| FD        | Disk     | 8272 or compatible Floppy Disk Controller              |
 | GDC       | Video    | uPD7220 Video Display Controller                       |
 | HDSK      | Disk     | SIMH Simulator Hard Disk                               |
 | IDE       | Disk     | IDE/ATA Hard Disk Interface                            |
+| IMM       | Disk     | IMM Zip Drive on PPI                                   |
 | INTRTC    | RTC      | Interrupt-based Real Time Clock                        |
 | KBD       | Kbd      | 8242 PS/2 Keyboard Controller                          |
 | KIO       | System   | Zilog Serial/ Parallel Counter/Timer                   |
@@ -3909,6 +3911,7 @@ may be discovered by RomWBW in your system.
 | I2C       | System   | I2C Interface                                          |
 | PIO       | Char     | Zilog Parallel Interface Controller                    |
 | PPIDE     | Disk     | 8255 IDE/ATA Hard Disk Interface                       |
+| PPA       | Disk     | PPA Zip Drive on PPI                                   |
 | PPK       | Kbd      | Matrix Keyboard                                        |
 | PPPSD     | Disk     | ParPortProp SD Card Interface                          |
 | PPPCON    | Serial   | ParPortProp Serial Console Interface                   |
@@ -3921,6 +3924,7 @@ may be discovered by RomWBW in your system.
 | SIO       | Char     | Zilog Serial Port Interface                            |
 | SN76489   | Sound    | SN76489 Programmable Sound Generator                   |
 | SPK       | Sound    | Bit-bang Speaker                                       |
+| SYQ       | Disk     | Iomega SparQ Drive on PPI                              |
 | TMS       | Video    | TMS9918/38/58 Video Display Controller                 |
 | UART      | Char     | 16C550 Family Serial Interface                         |
 | USB-FIFO  | Char     | FT232H-based ECB USB FIFO                              |

Source/HBIOS/Config/MBC_std.asm

@@ -48,6 +48,8 @@ DSKYMODE	.SET	DSKYMODE_NG	; DSKY VERSION: DSKYMODE_[V1|NG]
 UARTINTS	.SET	FALSE		; UART: INCLUDE INTERRUPT SUPPORT UNDER IM1/2/3
 ;UARTCFG	.SET	UARTCFG | SER_RTS
 ;
+LPTENABLE	.SET	TRUE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+;
 CVDUMON		.SET	CVDUMON_CGA	; CVDU: CVDU MONITOR SETUP: CVDUMON_[NONE|CGA|EGA]
 ;
 FDENABLE	.SET	TRUE		; FD: ENABLE FLOPPY DISK DRIVER (FD.ASM)

Source/HBIOS/Config/RCZ80_easy.asm

@@ -75,5 +75,6 @@ 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
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 ;
 PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)

Source/HBIOS/Config/RCZ80_kio.asm

@@ -72,5 +72,6 @@ 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
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 ;
 PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)

Source/HBIOS/Config/RCZ80_skz.asm

@@ -67,5 +67,6 @@ 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
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 ;
 PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)

Source/HBIOS/Config/RCZ80_std.asm

@@ -40,6 +40,8 @@ ACIAENABLE	.SET	TRUE		; ACIA: ENABLE MOTOROLA 6850 ACIA DRIVER (ACIA.ASM)
 SIOENABLE	.SET	TRUE		; SIO: ENABLE ZILOG SIO SERIAL DRIVER (SIO.ASM)
 DUARTENABLE	.SET	FALSE		; DUART: ENABLE 2681/2692 SERIAL DRIVER (DUART.ASM)
 ;
+LPTENABLE	.SET	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+;
 TMSENABLE	.SET	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSTIMENABLE	.SET	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 TMSMODE		.SET	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
@@ -59,5 +61,6 @@ PPIDEENABLE	.SET	TRUE		; PPIDE: ENABLE PARALLEL PORT IDE DISK DRIVER (PPIDE.ASM)
 SDENABLE	.SET	FALSE		; SD: ENABLE SD CARD DISK DRIVER (SD.ASM)
 SDMODE		.SET	SDMODE_PIO	; SD: DRIVER MODE: SDMODE_[JUHA|N8|CSIO|PPI|UART|DSD|MK4|SC|MT|PIO|USR]
 SDCNT		.SET	1		; SD: NUMBER OF SD CARD DEVICES (1-2), FOR DSD/SC/MT SC ONLY
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 ;
 PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)

Source/HBIOS/Config/RCZ80_tiny.asm

@@ -82,5 +82,6 @@ IDE0BASE	.SET	$90		; IDE 0: IO BASE ADDRESS
 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
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 ;
 PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)

Source/HBIOS/Config/RCZ80_zrc.asm

@@ -59,5 +59,6 @@ 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
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 ;
 PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)

Source/HBIOS/Config/RCZ80_zrc_ram.asm

@@ -63,5 +63,6 @@ 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
+IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 ;
 PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)

Source/HBIOS/cfg_dyno.asm

@@ -252,6 +252,12 @@ PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)
 PIO_SBC		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR 8255 CHIP

Source/HBIOS/cfg_master.asm

@@ -311,10 +311,33 @@ PIO0BASE	.EQU	$B8		; PIO 0: REGISTERS BASE ADR
 PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTMODE		.EQU	LPTMODE_NONE	; LPT: DRIVER MODE: LPTMODE_[NONE|SPP|MG014]
 LPTCNT		.EQU	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
+LPTTRACE	.EQU	1		; LPT: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 LPT0BASE	.EQU	$E8		; LPT 0: REGISTERS BASE ADR
 LPT1BASE	.EQU	$EC		; LPT 1: REGISTERS BASE ADR
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+PPACNT		.EQU	1		; PPA: NUMBER OF PPA DEVICES (1-2)
+PPATRACE	.EQU	1		; PPA: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPAMODE		.EQU	PPAMODE_SPP	; PPA: DRIVER MODE: PPAMODE_[NONE|SPP|MG014]
+PPA0BASE	.EQU	LPT0BASE	; PPA 0: BASE I/O ADDRESS OF PPI FOR PPA
+PPA1BASE	.EQU	LPT1BASE	; PPA 1: BASE I/O ADDRESS OF PPI FOR PPA
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+IMMCNT		.EQU	1		; IMM: NUMBER OF IMM DEVICES (1-2)
+IMMTRACE	.EQU	1		; IMM: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+IMMMODE		.EQU	IMMMODE_SPP	; IMM: DRIVER MODE: IMMMODE_[NONE|SPP|MG014]
+IMM0BASE	.EQU	LPT0BASE	; IMM 0: BASE I/O ADDRESS OF PPI FOR IMM
+IMM1BASE	.EQU	LPT1BASE	; IMM 1: BASE I/O ADDRESS OF PPI FOR IMM
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+SYQCNT		.EQU	1		; SYQ: NUMBER OF SYQ DEVICES (1-2)
+SYQTRACE	.EQU	1		; SYQ: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+SYQMODE		.EQU	IMMMODE_SPP	; SYQ: DRIVER MODE: SYQMODE_[NONE|SPP|MG014]
+SYQ0BASE	.EQU	LPT0BASE	; SYQ 0: BASE I/O ADDRESS OF PPI FOR SYQ
+SYQ1BASE	.EQU	LPT1BASE	; SYQ 1: BASE I/O ADDRESS OF PPI FOR SYQ
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO4BASE	.EQU	$90		; PIO: PIO REGISTERS BASE ADR FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_mbc.asm

@@ -234,11 +234,34 @@ PIOCNT		.EQU	2		; PIO: NUMBER OF CHIPS TO DETECT (1-2), 2 CHANNELS PER CHIP
 PIO0BASE	.EQU	$B8		; PIO 0: REGISTERS BASE ADR
 PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
-LPTENABLE	.EQU	TRUE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTMODE		.EQU	LPTMODE_SPP	; LPT: DRIVER MODE: LPTMODE_[NONE|SPP|MG014]
 LPTCNT		.EQU	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
+LPTTRACE	.EQU	1		; LPT: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 LPT0BASE	.EQU	$E8		; LPT 0: REGISTERS BASE ADR
 LPT1BASE	.EQU	$EC		; LPT 1: REGISTERS BASE ADR
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+PPACNT		.EQU	1		; PPA: NUMBER OF PPA DEVICES (1-2)
+PPATRACE	.EQU	1		; PPA: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPAMODE		.EQU	PPAMODE_SPP	; PPA: DRIVER MODE: PPAMODE_[NONE|MG014]
+PPA0BASE	.EQU	LPT0BASE	; PPA 0: BASE I/O ADDRESS OF PPI FOR PPA
+PPA1BASE	.EQU	LPT1BASE	; PPA 1: BASE I/O ADDRESS OF PPI FOR PPA
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+IMMCNT		.EQU	1		; IMM: NUMBER OF IMM DEVICES (1-2)
+IMMTRACE	.EQU	1		; IMM: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+IMMMODE		.EQU	IMMMODE_SPP	; IMM: DRIVER MODE: IMMMODE_[NONE|SPP|MG014]
+IMM0BASE	.EQU	LPT0BASE	; IMM 0: BASE I/O ADDRESS OF PPI FOR IMM
+IMM1BASE	.EQU	LPT1BASE	; IMM 1: BASE I/O ADDRESS OF PPI FOR IMM
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+SYQCNT		.EQU	1		; SYQ: NUMBER OF SYQ DEVICES (1-2)
+SYQTRACE	.EQU	1		; SYQ: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+SYQMODE		.EQU	IMMMODE_SPP	; SYQ: DRIVER MODE: SYQMODE_[NONE|SPP|MG014]
+SYQ0BASE	.EQU	LPT0BASE	; SYQ 0: BASE I/O ADDRESS OF PPI FOR SYQ
+SYQ1BASE	.EQU	LPT1BASE	; SYQ 1: BASE I/O ADDRESS OF PPI FOR SYQ
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO4BASE	.EQU	$90		; PIO: PIO REGISTERS BASE ADR FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_mk4.asm

@@ -248,10 +248,18 @@ PIO0BASE	.EQU	$B8		; PIO 0: REGISTERS BASE ADR
 PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTMODE		.EQU	LPTMODE_NONE	; LPT: DRIVER MODE: LPTMODE_[NONE|SPP|MG014]
 LPTCNT		.EQU	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
+LPTTRACE	.EQU	1		; LPT: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 LPT0BASE	.EQU	$E8		; LPT 0: REGISTERS BASE ADR
 LPT1BASE	.EQU	$EC		; LPT 1: REGISTERS BASE ADR
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO4BASE	.EQU	$90		; PIO: PIO REGISTERS BASE ADR FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_n8.asm

@@ -247,6 +247,12 @@ PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO4BASE	.EQU	$90		; PIO: PIO REGISTERS BASE ADR FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_rcz180.asm

@@ -257,6 +257,32 @@ PIO0BASE	.EQU	$B8		; PIO 0: REGISTERS BASE ADR
 PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTMODE		.EQU	LPTMODE_MG014	; LPT: DRIVER MODE: LPTMODE_[NONE|SPP|MG014]
+LPTCNT		.EQU	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
+LPTTRACE	.EQU	1		; LPT: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+LPT0BASE	.EQU	$18		; LPT 0: REGISTERS BASE ADR
+LPT1BASE	.EQU	$00		; LPT 1: REGISTERS BASE ADR
+;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+PPACNT		.EQU	1		; PPA: NUMBER OF PPA DEVICES (1-2)
+PPATRACE	.EQU	1		; PPA: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPAMODE		.EQU	PPAMODE_MG014	; PPA: DRIVER MODE: PPAMODE_[NONE|SPP|MG014]
+PPA0BASE	.EQU	LPT0BASE	; PPA 0: BASE I/O ADDRESS OF PPI FOR PPA
+PPA1BASE	.EQU	LPT1BASE	; PPA 1: BASE I/O ADDRESS OF PPI FOR PPA
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+IMMCNT		.EQU	1		; IMM: NUMBER OF IMM DEVICES (1-2)
+IMMTRACE	.EQU	1		; IMM: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+IMMMODE		.EQU	IMMMODE_MG014	; IMM: DRIVER MODE: IMMMODE_[NONE|SPP|MG014]
+IMM0BASE	.EQU	LPT0BASE	; IMM 0: BASE I/O ADDRESS OF PPI FOR IMM
+IMM1BASE	.EQU	LPT1BASE	; IMM 1: BASE I/O ADDRESS OF PPI FOR IMM
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+SYQCNT		.EQU	1		; SYQ: NUMBER OF SYQ DEVICES (1-2)
+SYQTRACE	.EQU	1		; SYQ: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+SYQMODE		.EQU	IMMMODE_MG014	; SYQ: DRIVER MODE: SYQMODE_[NONE|SPP|MG014]
+SYQ0BASE	.EQU	LPT0BASE	; SYQ 0: BASE I/O ADDRESS OF PPI FOR SYQ
+SYQ1BASE	.EQU	LPT1BASE	; SYQ 1: BASE I/O ADDRESS OF PPI FOR SYQ
 ;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_rcz280.asm

@@ -261,6 +261,32 @@ PIO0BASE	.EQU	$B8		; PIO 0: REGISTERS BASE ADR
 PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTMODE		.EQU	LPTMODE_MG014	; LPT: DRIVER MODE: LPTMODE_[NONE|SPP|MG014]
+LPTCNT		.EQU	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
+LPTTRACE	.EQU	1		; LPT: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+LPT0BASE	.EQU	$18		; LPT 0: REGISTERS BASE ADR
+LPT1BASE	.EQU	$00		; LPT 1: REGISTERS BASE ADR
+;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+PPACNT		.EQU	1		; PPA: NUMBER OF PPA DEVICES (1-2)
+PPATRACE	.EQU	1		; PPA: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPAMODE		.EQU	PPAMODE_MG014	; PPA: DRIVER MODE: PPAMODE_[NONE|SPP|MG014]
+PPA0BASE	.EQU	LPT0BASE	; PPA 0: BASE I/O ADDRESS OF PPI FOR PPA
+PPA1BASE	.EQU	LPT1BASE	; PPA 1: BASE I/O ADDRESS OF PPI FOR PPA
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+IMMCNT		.EQU	1		; IMM: NUMBER OF IMM DEVICES (1-2)
+IMMTRACE	.EQU	1		; IMM: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+IMMMODE		.EQU	IMMMODE_MG014	; IMM: DRIVER MODE: IMMMODE_[NONE|SPP|MG014]
+IMM0BASE	.EQU	LPT0BASE	; IMM 0: BASE I/O ADDRESS OF PPI FOR IMM
+IMM1BASE	.EQU	LPT1BASE	; IMM 1: BASE I/O ADDRESS OF PPI FOR IMM
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+SYQCNT		.EQU	1		; SYQ: NUMBER OF SYQ DEVICES (1-2)
+SYQTRACE	.EQU	1		; SYQ: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+SYQMODE		.EQU	IMMMODE_MG014	; SYQ: DRIVER MODE: SYQMODE_[NONE|SPP|MG014]
+SYQ0BASE	.EQU	LPT0BASE	; SYQ 0: BASE I/O ADDRESS OF PPI FOR SYQ
+SYQ1BASE	.EQU	LPT1BASE	; SYQ 1: BASE I/O ADDRESS OF PPI FOR SYQ
 ;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_rcz80.asm

@@ -255,6 +255,32 @@ PIO0BASE	.EQU	$B8		; PIO 0: REGISTERS BASE ADR
 PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTMODE		.EQU	LPTMODE_MG014	; LPT: DRIVER MODE: LPTMODE_[NONE|SPP|MG014]
+LPTCNT		.EQU	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
+LPTTRACE	.EQU	1		; LPT: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+LPT0BASE	.EQU	$0C		; LPT 0: REGISTERS BASE ADR
+LPT1BASE	.EQU	$00		; LPT 1: REGISTERS BASE ADR
+;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+PPACNT		.EQU	1		; PPA: NUMBER OF PPA DEVICES (1-2)
+PPATRACE	.EQU	1		; PPA: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPAMODE		.EQU	PPAMODE_MG014	; PPA: DRIVER MODE: PPAMODE_[NONE|SPP|MG014]
+PPA0BASE	.EQU	LPT0BASE	; PPA 0: BASE I/O ADDRESS OF PPI FOR PPA
+PPA1BASE	.EQU	LPT1BASE	; PPA 1: BASE I/O ADDRESS OF PPI FOR PPA
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+IMMCNT		.EQU	1		; IMM: NUMBER OF IMM DEVICES (1-2)
+IMMTRACE	.EQU	1		; IMM: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+IMMMODE		.EQU	IMMMODE_MG014	; IMM: DRIVER MODE: IMMMODE_[NONE|SPP|MG014]
+IMM0BASE	.EQU	LPT0BASE	; IMM 0: BASE I/O ADDRESS OF PPI FOR IMM
+IMM1BASE	.EQU	LPT1BASE	; IMM 1: BASE I/O ADDRESS OF PPI FOR IMM
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+SYQCNT		.EQU	1		; SYQ: NUMBER OF SYQ DEVICES (1-2)
+SYQTRACE	.EQU	1		; SYQ: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+SYQMODE		.EQU	IMMMODE_MG014	; SYQ: DRIVER MODE: SYQMODE_[NONE|SPP|MG014]
+SYQ0BASE	.EQU	LPT0BASE	; SYQ 0: BASE I/O ADDRESS OF PPI FOR SYQ
+SYQ1BASE	.EQU	LPT1BASE	; SYQ 1: BASE I/O ADDRESS OF PPI FOR SYQ
 ;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_rph.asm

@@ -236,6 +236,12 @@ PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO4BASE	.EQU	$90		; PIO: PIO REGISTERS BASE ADR FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_sbc.asm

@@ -234,9 +234,12 @@ PIO0BASE	.EQU	$B8		; PIO 0: REGISTERS BASE ADR
 PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
-LPTCNT		.EQU	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
-LPT0BASE	.EQU	$E8		; LPT 0: REGISTERS BASE ADR
-LPT1BASE	.EQU	$EC		; LPT 1: REGISTERS BASE ADR
+;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
 ;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO4BASE	.EQU	$90		; PIO: PIO REGISTERS BASE ADR FOR ECB 4P BOARD

Source/HBIOS/cfg_scz180.asm

@@ -251,6 +251,32 @@ PIO0BASE	.EQU	$B8		; PIO 0: REGISTERS BASE ADR
 PIO1BASE	.EQU	$BC		; PIO 1: REGISTERS BASE ADR
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
+LPTMODE		.EQU	LPTMODE_MG014	; LPT: DRIVER MODE: LPTMODE_[NONE|SPP|MG014]
+LPTCNT		.EQU	1		; LPT: NUMBER OF CHIPS TO DETECT (1-2)
+LPTTRACE	.EQU	1		; LPT: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+LPT0BASE	.EQU	$18		; LPT 0: REGISTERS BASE ADR
+LPT1BASE	.EQU	$00		; LPT 1: REGISTERS BASE ADR
+;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+PPACNT		.EQU	1		; PPA: NUMBER OF PPA DEVICES (1-2)
+PPATRACE	.EQU	1		; PPA: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+PPAMODE		.EQU	PPAMODE_MG014	; PPA: DRIVER MODE: PPAMODE_[NONE|SPP|MG014]
+PPA0BASE	.EQU	LPT0BASE	; PPA 0: BASE I/O ADDRESS OF PPI FOR PPA
+PPA1BASE	.EQU	LPT1BASE	; PPA 1: BASE I/O ADDRESS OF PPI FOR PPA
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+IMMCNT		.EQU	1		; IMM: NUMBER OF IMM DEVICES (1-2)
+IMMTRACE	.EQU	1		; IMM: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+IMMMODE		.EQU	IMMMODE_MG014	; IMM: DRIVER MODE: IMMMODE_[NONE|SPP|MG014]
+IMM0BASE	.EQU	LPT0BASE	; IMM 0: BASE I/O ADDRESS OF PPI FOR IMM
+IMM1BASE	.EQU	LPT1BASE	; IMM 1: BASE I/O ADDRESS OF PPI FOR IMM
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+SYQCNT		.EQU	1		; SYQ: NUMBER OF SYQ DEVICES (1-2)
+SYQTRACE	.EQU	1		; SYQ: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
+SYQMODE		.EQU	IMMMODE_MG014	; SYQ: DRIVER MODE: SYQMODE_[NONE|SPP|MG014]
+SYQ0BASE	.EQU	LPT0BASE	; SYQ 0: BASE I/O ADDRESS OF PPI FOR SYQ
+SYQ1BASE	.EQU	LPT1BASE	; SYQ 1: BASE I/O ADDRESS OF PPI FOR SYQ
 ;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)

Source/HBIOS/cfg_z80retro.asm

@@ -206,6 +206,12 @@ PIOENABLE	.EQU	FALSE		; PIO: ENABLE ZILOG PIO DRIVER (PIO.ASM)
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)
 PIO_SBC		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR 8255 CHIP

Source/HBIOS/cfg_zeta.asm

@@ -177,6 +177,12 @@ PIOENABLE	.EQU	FALSE		; PIO: ENABLE ZILOG PIO DRIVER (PIO.ASM)
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)
 PIO_SBC		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR 8255 CHIP

Source/HBIOS/cfg_zeta2.asm

@@ -188,6 +188,12 @@ PIOENABLE	.EQU	FALSE		; PIO: ENABLE ZILOG PIO DRIVER (PIO.ASM)
 ;
 LPTENABLE	.EQU	FALSE		; LPT: ENABLE CENTRONICS PRINTER DRIVER (LPT.ASM)
 ;
+PPAENABLE	.EQU	FALSE		; PPA: ENABLE PPA DISK DRIVER (PPA.ASM)
+;
+IMMENABLE	.EQU	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
+;
+SYQENABLE	.EQU	FALSE		; SYQ: ENABLE IMM DISK DRIVER (SYQ.ASM)
+;
 PIO_4P		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB 4P BOARD
 PIO_ZP		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR ECB ZILOG PERIPHERALS BOARD (PIO.ASM)
 PIO_SBC		.EQU	FALSE		; PIO: ENABLE PARALLEL PORT DRIVER FOR 8255 CHIP

Source/HBIOS/hbios.asm

@@ -1261,11 +1261,11 @@ Z280_INITZ:
 
 	; SET DEFAULT CPU CLOCK MULTIPLIERS (XTAL / 2)
 	;
-	; IT HAS BEEN REPORTED THAT CMR NEEDS TO BE SET PRIOR TO CCR
-	; WHEN USING AN INPUT FREQUENCY THAT IS XTAL / 2.
-	; I NEVER EXPERIENCED A PROBLEM RELATED TO ORDER, BUT JUST
+	; BILL MCMULLEN REPORTED THAT CMR NEEDS TO BE SET PRIOR TO CCR
+	; WHEN USING A CPU FREQUENCY (PHI) THAT IS XTAL * 2.
+	; HERE WE ARE SETTING CPU FREQUENCY TO XTAL / 2, BUT JUST
 	; FOR GOOD MEASURE, CMR IS SET PRIOR TO CCR BELOW.
-	; https://www.retrobrewcomputers.org/forum/index.php?t=msg&th=316&#msg_5045
+	; https://www.retrobrewcomputers.org/forum/index.php?t=msg&th=316&goto=5045&#msg_5045
 	XOR	A
 	OUT0	(Z180_CMR),A
 	OUT0	(Z180_CCR),A
@@ -3239,6 +3239,15 @@ HB_INITTBL:
 #IF (HDSKENABLE)
 	.DW	HDSK_INIT
 #ENDIF
+#IF (PPAENABLE)
+	.DW	PPA_INIT
+#ENDIF
+#IF (IMMENABLE)
+	.DW	IMM_INIT
+#ENDIF
+#IF (SYQENABLE)
+	.DW	SYQ_INIT
+#ENDIF
 #IF (PRPENABLE)
 	.DW	PRP_INIT
 #ENDIF
@@ -6348,6 +6357,33 @@ SIZ_HDSK	.EQU	$ - ORG_HDSK
 		.ECHO	" bytes.\n"
 #ENDIF
 ;
+#IF (PPAENABLE)
+ORG_PPA		.EQU	$
+  #INCLUDE "ppa.asm"
+SIZ_PPA		.EQU	$ - ORG_PPA
+		.ECHO	"PPA occupies "
+		.ECHO	SIZ_PPA
+		.ECHO	" bytes.\n"
+#ENDIF
+;
+#IF (IMMENABLE)
+ORG_IMM		.EQU	$
+  #INCLUDE "imm.asm"
+SIZ_IMM		.EQU	$ - ORG_IMM
+		.ECHO	"IMM occupies "
+		.ECHO	SIZ_IMM
+		.ECHO	" bytes.\n"
+#ENDIF
+;
+#IF (SYQENABLE)
+ORG_SYQ		.EQU	$
+  #INCLUDE "syq.asm"
+SIZ_SYQ		.EQU	$ - ORG_SYQ
+		.ECHO	"SYQ occupies "
+		.ECHO	SIZ_SYQ
+		.ECHO	" bytes.\n"
+#ENDIF
+;
 #IF (TERMENABLE)
 ORG_TERM	.EQU	$
   #INCLUDE "term.asm"
@@ -6762,7 +6798,6 @@ PS_PRTDC:
 	RES	7,D			; CLEAR LBA BIT
 	LD	B,11			; 11 BIT SHIFT TO CONVERT BLOCKS --> MB
 	CALL	SRL32			; RIGHT SHIFT
-	;CALL	PRTDEC			; PRINT LOW WORD IN DECIMAL (HIGH WORD DISCARDED)
 	CALL	PRTDEC32		; PRINT DWORD IN DECIMAL
 	PRTS("MB$")			; PRINT SUFFIX
 	CALL	PC_COMMA
@@ -6777,7 +6812,6 @@ PS_PRTDC1:
 	RES	7,D			; CLEAR LBA BIT
 	LD	B,1			; 11 BIT SHIFT TO CONVERT BLOCKS --> MB
 	CALL	SRL32			; RIGHT SHIFT
-	;CALL	PRTDEC			; PRINT LOW WORD IN DECIMAL (HIGH WORD DISCARDED)
 	CALL	PRTDEC32		; PRINT DWORD IN DECIMAL
 	PRTS("KB$")			; PRINT SUFFIX
 	CALL	PC_COMMA
@@ -7134,6 +7168,9 @@ PS_DDSD		.TEXT	"SD$"
 PS_DDPRPSD	.TEXT	"PRPSD$"
 PS_DDPPPSD	.TEXT	"PPPSD$"
 PS_DDHDSK	.TEXT	"HDSK$"
+PS_DDPPA	.TEXT	"PPA$"
+PS_DDIMM	.TEXT	"IMM$"
+PS_DDSYQ	.TEXT	"SYQ$"
 ;
 ; DISK TYPE STRINGS
 ;

Source/HBIOS/hbios.inc

@@ -321,6 +321,9 @@ 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
 ;
 ; RTC DEVICE IDS
 ;

Source/HBIOS/lpt.asm

@@ -3,13 +3,17 @@
 ; CENTRONICS (LPT) INTERFACE DRIVER
 ;==================================================================================================
 ;
-; CENTRONICS-STYLE PARALLEL PRINTER DRIVER.  ASSUMES IBM STYLE
-; HARDWARE INTERFACE AS DESCRIBED BELOW.
+; CENTRONICS-STYLE PARALLEL PRINTER DRIVER.
 ;
 ; IMPLEMENTED AS A ROMWBW CHARACTER DEVICE.  CURRENTLY HANDLES OUPUT
 ; ONLY.
 ;
-;  PORT 0 (INPUT/OUTPUT):
+;==================================================================================================
+;
+;  IBM PC STANDARD PARALLEL PORT (SPP):
+;  - NHYODYNE PRINT MODULE
+;
+;  PORT 0 (OUTPUT):
 ;
 ;	D7	D6	D5	D4	D3	D2	D1	D0
 ;     +-------+-------+-------+-------+-------+-------+-------+-------+
@@ -20,26 +24,51 @@
 ;
 ;	D7	D6	D5	D4	D3	D2	D1	D0
 ;     +-------+-------+-------+-------+-------+-------+-------+-------+
-;     | BUSY  | ACK   | POUT  | SEL   | ERR   | 0     | 0     | 0     |
+;     | /BUSY | /ACK  | POUT  | SEL   | /ERR  | 0     | 0     | 0     |
 ;     +-------+-------+-------+-------+-------+-------+-------+-------+
 ;
-;  PORT 2 (INPUT/OUTPUT):
+;  PORT 2 (OUTPUT):
 ;
 ;	D7	D6	D5	D4	D3	D2	D1	D0
 ;     +-------+-------+-------+-------+-------+-------+-------+-------+
 ;     | STAT1 | STAT0 | ENBL  | PINT  | SEL   | RES   | LF    | STB   |
 ;     +-------+-------+-------+-------+-------+-------+-------+-------+
 ;
-LPT_NONE	.EQU	0		; NOT PRESENT
-LPT_IBM		.EQU	1		; IBM PC STYLE INTERFACE
+;==================================================================================================
+;
+;  MG014 STYLE INTERFACE:
+;  - RCBUS MG014 MODULE
+;
+;  PORT 0 (OUTPUT):
+;
+;	D7	D6	D5	D4	D3	D2	D1	D0
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;     | PD7   | PD6   | PD5   | PD4   | PD3   | PD2   | PD1   | PD0   |
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;
+;  PORT 1 (INPUT):
+;
+;	D7	D6	D5	D4	D3	D2	D1	D0
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;     |	      |	      |	      | /ERR  | SEL   | POUT  | BUSY  | /ACK  |
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;
+;  PORT 2 (OUTPUT):
+;
+;	D7	D6	D5	D4	D3	D2	D1	D0
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;     | LED   |	      |	      |	      | /SEL  | /RES  | /LF   | /STB  |
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;
+;==================================================================================================
 ;
 ; PRE-CONSOLE INITIALIZATION - DETECT AND INIT HARDWARE
 ;
 LPT_PREINIT:
 ;
 ; SETUP THE DISPATCH TABLE ENTRIES
-; NOTE: INTS WILL BE DISABLED WHEN PREINIT IS CALLED AND THEY MUST REMIAIN
-; DISABLED.
+; NOTE: INTS WILL BE DISABLED WHEN PREINIT IS CALLED AND THEY MUST
+; REMAIN DISABLED.
 ;
 	LD	B,LPT_CFGCNT		; LOOP CONTROL
 	XOR	A			; ZERO TO ACCUM
@@ -136,18 +165,26 @@ LPT_IN:
 LPT_OUT:
 	CALL	LPT_OST			; READY TO SEND?
 	JR	Z,LPT_OUT		; LOOP IF NOT
-	LD	A,(IY+3)
-	LD	C,A			; PORT 0 (DATA)
- 	OUT	(C),E			; OUTPUT DATA TO PORT
- 	CALL 	DELAY   		; IGNORE ANYTHING BACK AFTER A RESET
-        LD      A,%00001101             ; SELECT & STROBE, LEDS OFF
-	INC 	C 			; PUT CONTROL PORT IN C
-	INC 	C
-        OUT	(C),A			; OUTPUT DATA TO PORT
-  	CALL 	DELAY   		; IGNORE ANYTHING BACK AFTER A RESET
-        LD      A,%00001100             ; SELECT, LEDS OFF
-        OUT	(C),A			; OUTPUT DATA TO PORT
-
+	LD	C,(IY+3)		; PORT 0 (DATA)
+	OUT	(C),E			; OUTPUT DATA TO PORT
+#IF (LPTMODE == LPTMODE_SPP)
+	LD	A,%00001101		; SELECT & STROBE, LEDS OFF
+#ENDIF
+#IF (LPTMODE == LPTMODE_MG014)
+	LD	A,%00000100		; SELECT & STROBE, LED OFF
+#ENDIF
+	INC	C			; PUT CONTROL PORT IN C
+	INC	C
+	OUT	(C),A			; OUTPUT DATA TO PORT
+	CALL	DELAY
+#IF (LPTMODE == LPTMODE_SPP)
+	LD	A,%00001100		; SELECT, LEDS OFF
+#ENDIF
+#IF (LPTMODE == LPTMODE_MG014)
+	LD	A,%00000101		; SELECT, LED OFF
+#ENDIF
+	OUT	(C),A			; OUTPUT DATA TO PORT
+	CALL	DELAY
 	XOR	A			; SIGNAL SUCCESS
 	RET
 ;
@@ -161,11 +198,16 @@ LPT_IST:
 ; OUTPUT STATUS
 ;
 LPT_OST:
-	LD	A,(IY+3)
-	LD	C,A			; PORT 0 (DATA)
-	INC 	C			; SELECT STATUS PORT
- 	IN	A,(C)			; GET STATUS INFO
-    	AND	%10000000		; ONLY INTERESTED IN BUSY FLAG
+	LD	C,(IY+3)		; BASE PORT
+	INC	C			; SELECT STATUS PORT
+	IN	A,(C)			; GET STATUS INFO
+#IF (LPTMODE == LPTMODE_SPP)
+	AND	%10000000		; ISOLATE /BUSY
+#ENDIF
+#IF (LPTMODE == LPTMODE_MG014)
+	AND	%00000010		; ISOLATE BUSY
+	XOR	%00000010		; INVERT TO READY
+#ENDIF
 	RET				; DONE
 ;
 ; INITIALIZE DEVICE
@@ -180,20 +222,40 @@ LPT_INITDEV:
 ; PREINIT ABOVE.  PREINIT IS NOT ALLOWED TO ENABLE INTS!
 ;
 LPT_INITDEVX:
-	LD	A,(IY+3)
-	LD	C,A			; PORT 0 (DATA)
+;
+#IF (LPTMODE == LPTMODE_SPP)
+;
+	LD	C,(IY+3)		; PORT 0 (DATA)
 	XOR	A			; CLEAR ACCUM
 	OUT	(C),A			; SEND IT
 	INC	C			; BUMP TO
 	INC	C			; ... PORT 2
 	LD	A,%00001000		; SELECT AND ASSERT RESET, LEDS OFF
 	OUT	(C),A			; SEND IT
- 	CALL	LDELAY			; HALF SECOND DELAY
+	CALL	LDELAY			; HALF SECOND DELAY
 	LD	A,%00001100		; SELECT AND DEASSERT RESET, LEDS OFF
 	OUT	(C),A			; SEND IT
 	XOR	A			; SIGNAL SUCCESS
 	RET				; RETURN
 ;
+#ENDIF
+;
+#IF (LPTMODE == LPTMODE_MG014)
+	LD	A,(IY+3)		; BASE PORT
+	ADD	A,3			; BUMP TO CONTROL PORT
+	LD	C,A			; MOVE TO C FOR I/O
+	LD	A,$82			; CONFIG A OUT, B IN, C OUT
+	OUT	(C),A			; DO IT
+	DEC	C			; OUTPUT PORT
+	LD	A,$81			; STROBE OFF, SELECT ON, RES ON, LED ON
+	OUT	(C),A			; SEND IT
+	CALL	LDELAY			; HALF SECOND DELAY
+	LD	A,$05			; STROBE OFF, SELECT ON, RES OFF, LED OFF
+	OUT	(C),A			; SEND IT
+	XOR	A			; SIGNAL SUCCESS
+	RET				; RETURN
+#ENDIF
+;
 ;
 ;
 LPT_QUERY:
@@ -215,17 +277,26 @@ LPT_DEVICE:
 ;
 ; LPT DETECTION ROUTINE
 ;
+#IF (LPTMODE == LPTMODE_NONE)
+;
 LPT_DETECT:
-	LD	A,(IY+3)		; BASE PORT ADDRESS
-	LD	C,A			; PUT IN C FOR I/O
+	LD	A,LPTMODE_NONE		; NOTHING TO DETECT
+	RET
+;
+#ENDIF
+;
+#IF (LPTMODE == LPTMODE_SPP)
+;
+LPT_DETECT:
+	LD	C,(IY+3)		; BASE PORT ADDRESS
 	CALL	LPT_DETECT2		; CHECK IT
 	JR	Z,LPT_DETECT1		; FOUND IT, RECORD IT
-	LD	A,LPT_NONE		; NOTHING FOUND
+	LD	A,LPTMODE_NONE		; NOTHING FOUND
 	RET				; DONE
 ;
 LPT_DETECT1:
 	; LPT FOUND, RECORD IT
-	LD	A,LPT_IBM		; RETURN CHIP TYPE
+	LD	A,LPTMODE_SPP		; RETURN CHIP TYPE
 	RET				; DONE
 ;
 LPT_DETECT2:
@@ -253,6 +324,43 @@ LPT_DETECT2:
 	CP	$A5			; CORRECT?
 	RET				; RETURN (ZF SET CORRECTLY)
 ;
+#ENDIF
+;
+#IF (LPTMODE == LPTMODE_MG014)
+LPT_DETECT:
+;
+	; TEST FOR PPI EXISTENCE
+	; WE SETUP THE PPI TO WRITE, THEN WRITE A VALUE OF $A5
+	; TO PORT A (DATALO), THEN READ IT BACK.  IF THE PPI IS THERE
+	; THEN THE BUS HOLD CIRCUITRY WILL READ BACK THE $A5. SINCE
+	; WE ARE IN WRITE MODE, AN IDE CONTROLLER WILL NOT BE ABLE TO
+	; INTERFERE WITH THE VALUE BEING READ.
+;
+	LD	A,(IY+3)		; BASE IO ADDRESS
+	ADD	A,3			; BUMP TO CONTROL PORT
+	LD	C,A			; PUT IN C
+	LD	A,$80			; SET PORT A TO WRITE
+	OUT	(C),A			; WRITE IT
+;
+	LD	C,(IY+3)		; PPI PORT A
+	LD	A,$A5			; TEST VALUE
+	OUT	(C),A			; PUSH VALUE TO PORT
+	IN	A,(C)			; GET PORT VALUE
+#IF (LPTTRACE >= 3)
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+	CP	$A5			; CHECK FOR TEST VALUE
+	JR	Z,LPT_DETECT1		; FOUND IT
+	LD	A,LPTMODE_NONE		; NOT FOUND
+	RET
+;
+LPT_DETECT1:
+	; LPT FOUND, RECORD IT
+	LD	A,LPTMODE_MG014		; RETURN CHIP TYPE
+	RET				; DONE
+#ENDIF
+;
 ;
 ;
 LPT_PRTCFG:
@@ -266,7 +374,7 @@ LPT_PRTCFG:
 	CALL	PRTHEXBYTE		; PRINT BASE PORT
 
 	; PRINT THE LPT TYPE
-	CALL	PC_SPACE		; FORMATTING
+	PRTS(" MODE=$")			; FORMATTING
 	LD	A,(IY+1)		; GET LPT TYPE BYTE
 	RLCA				; MAKE IT A WORD OFFSET
 	LD	HL,LPT_TYPE_MAP		; POINT HL TO TYPE MAP TABLE
@@ -290,10 +398,12 @@ LPT_PRTCFG:
 ;
 LPT_TYPE_MAP:
 		.DW	LPT_STR_NONE
-		.DW	LPT_STR_IBM
+		.DW	LPT_STR_SPP
+		.DW	LPT_STR_MG014
 ;
 LPT_STR_NONE	.DB	"<NOT PRESENT>$"
-LPT_STR_IBM	.DB	"IBM$"
+LPT_STR_SPP	.DB	"SPP$"
+LPT_STR_MG014	.DB	"MG014$"
 ;
 ; WORKING VARIABLES
 ;

Source/HBIOS/ppp.asm

@@ -904,7 +904,7 @@ PPPSD_GETCSD:
 	CALL	PPP_SNDCMD		; SEND COMMAND
 	RET	NZ			; ABORT ON ERROR
 
-	LD	B,16			; GET 4 BYTES
+	LD	B,16			; GET 16 BYTES
 	LD	HL,PPPSD_CSDBUF
 PPPSD_GETCSD1:
 	CALL	PPP_GETBYTE

Source/HBIOS/romldr.asm

@@ -180,7 +180,7 @@ start1:
 	call	pstr			; do it
 	call	clrbuf			; zero fill the cmd buffer
 ;
-#if (BIOS == BIOS_WBW)
+#if ((BIOS == BIOS_WBW) & FPSW_ENABLE)
 ;
 	ld	b,BF_SYSGET		; HBIOS SysGet
 	ld	c,BF_SYSGET_PANEL	; ... Panel swiches value
@@ -390,7 +390,7 @@ runcmd2:
 	ld	(bootslice),a		; save boot slice
 	jp	diskboot		; boot the disk unit/slice
 ;
-#if (BIOS == BIOS_WBW)
+#if ((BIOS == BIOS_WBW) & FPSW_ENABLE)
 ;
 ;=======================================================================
 ; Process Front Panel switches

Source/HBIOS/std.asm

@@ -242,6 +242,30 @@ GDCMODE_NONE	.EQU	0
 GDCMODE_ECB	.EQU	1		; ECB GDC
 GDCMODE_RPH	.EQU	2		; RPH GDC
 ;
+; LPT DRIVER MODE SELECTIONS
+;
+LPTMODE_NONE	.EQU	0		; NONE
+LPTMODE_SPP	.EQU	1		; IBM PC STANDARD PAR PORT (SPP)
+LPTMODE_MG014	.EQU	2		; RCBUS MG014 STYLE INTERFACE
+;
+; PPA DRIVER MODE SELECTIONS
+;
+PPAMODE_NONE	.EQU	0		; NONE
+PPAMODE_SPP	.EQU	1		; IBM PC STANDARD PAR PORT (SPP)
+PPAMODE_MG014	.EQU	2		; RCBUS MG014 STYLE INTERFACE
+;
+; IMM DRIVER MODE SELECTIONS
+;
+IMMMODE_NONE	.EQU	0		; NONE
+IMMMODE_SPP	.EQU	1		; IBM PC STANDARD PAR PORT (SPP)
+IMMMODE_MG014	.EQU	2		; RCBUS MG014 STYLE INTERFACE
+;
+; SYQ DRIVER MODE SELECTIONS
+;
+SYQMODE_NONE	.EQU	0		; NONE
+SYQMODE_SPP	.EQU	1		; IBM PC STANDARD PAR PORT (SPP)
+SYQMODE_MG014	.EQU	2		; RCBUS MG014 STYLE INTERFACE
+;
 ; GDC MONITOR SELECTIONS
 ;
 GDCMON_NONE	.EQU	0
@@ -431,6 +455,16 @@ SPD_UNSUP	.EQU	0		; PLATFORM CAN CHANGE SPEEDS BUT IS UNSUPPORTED
 SPD_HIGH	.EQU	1		; PLATFORM CAN CHANGE SPEED, STARTS HIGH
 SPD_LOW		.EQU	2		; PLATFORM CAN CHANGE SPEED, STARTS LOW
 ;
+; SCSI COMMAND CODES (SHOULD BE IT IT'S OWN FILE)
+;
+SCSI_CMD_READ	.EQU	$08
+SCSI_CMD_INQ	.EQU	$12
+SCSI_CMD_TEST	.EQU	$00
+SCSI_CMD_START	.EQU	$1B
+SCSI_CMD_SENSE	.EQU	$03
+SCSI_CMD_WRITE	.EQU	$0A
+SCSI_CMD_RDCAP	.EQU	$25
+;
 #INCLUDE "build.inc"		; INCLUDE USER CONFIG, ADD VARIANT, TIMESTAMP, & ROMSIZE
 ;
 ; INCLUDE Z180 REGISTER DEFINITIONS

Source/pSys/ReadMe.txt

@@ -48,7 +48,7 @@ The layout of the first track does not conform exactly to the
 recommended p-System layout.  The recommended layout is not possible 
 because it conflicts with the RomWBW definition for a boot track.  
 However, the changes are only slightly different sector assignments for 
-the different boot componets -- the general boot sequence and mechanism 
+the different boot components -- the general boot sequence and mechanism 
 for the p-System is completely standard.
 
 The logical disk geometry used by this p-System
@@ -77,14 +77,17 @@ escape sequence handling configuration.  The debugger code as added to
 SYSTEM.PASCAL to enable the debug function.  SYSTEM.INTERP was modified 
 to enable the extended BIOS functions.
 
-The build/makefile creates the psys disk image (psys.img) by adding 
-concatentating psys.vol and blank.vol (after adding track 0 contents to 
+The build/makefile creates the psys disk image (psys.img) by 
+concatenating psys.vol and blank.vol (after adding track 0 contents to 
 each).  psys.vol and blank.vol are recognized by CiderPress and 
 CiderPress can be used to add/remove files from these volumes.  
-However, there is currently no straightforward way to extract the 
-volumes from the disk image.  If you are good with a binary disk 
-editor, you can do it that way.  Please contact me if you are 
-interested in pursuing that.
+To extract volumes from a disk image, Andrew Davidson has created
+a nice Python script that can extract p-System volumes from an
+existing disk image file.  The extracted volume can be manipulated
+by CiderPress.  The script is also capable of re-inserting a modified
+volume back into the disk image file.  This tool is available at:
+https://github.com/robosnacks/psysimg.
+
 
 There is currently no support for floppy drives.
 
@@ -119,7 +122,7 @@ that SofTech produced a IV.1 with some nice enhancements (like
 subsidiary volumes and decent support for ANSI/VT-100 terminals).  I
 have been unable to track down the IV.1 distribution media despite
 trying very hard.  If anyone knows of a source for the media of the
-Adapable p-System for Z80, I would love to get hold of it.
+Adaptable p-System for Z80, I would love to get hold of it.
 
 3:58 PM Tuesday, January 17, 2023
 
@@ -138,4 +141,10 @@ arrow keys transmitted by an ANSI/VT-100 terminal.  In this case,
 the setup program was used to define up/down/left/right like
 WordStar does: ^E,^X,^S,^D.
 
-5:48 PM Tuesday, January 17, 2023
+5:48 PM Tuesday, January 17, 2023
+
+Updated instructions above to include a reference to Andrew 
+Davidson's Python script that will extract/insert volumes from/to
+a disk image.
+
+1:31 PM Thursday, May 11, 2023

Source/ver.inc

@@ -2,7 +2,7 @@
 #DEFINE	RMN	3
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.3.0-dev.12"
+#DEFINE BIOSVER	"3.3.0-dev.19"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP

Source/ver.lib

@@ -3,5 +3,5 @@ rmn	equ	3
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.3.0-dev.12"
+	db	"3.3.0-dev.19"
 	endm