Add IBM Standard Parallel Port Support to IMM 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

@@ -5,6 +5,9 @@ Version 3.3
 - A?C: Support for SD PIO
 - 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)) \
-16 Apr 2023
+23 May 2023
 
 # Overview
 

ReadMe.txt

@@ -1,6 +1,6 @@
 RomWBW ReadMe
 Wayne Warthen (wwarthen@gmail.com)
-16 Apr 2023
+23 May 2023
 
 
 

Source/Apps/assign.asm

@@ -1918,8 +1918,8 @@ dev06	.db	"SD",0
 dev07	.db	"PRPSD",0
 dev08	.db	"PPPSD",0
 dev09	.db	"HDSK",0
-dev10	.equ	devunk
-dev11	.equ	devunk
+dev10	.db	"PPA",0
+dev11	.db	"IMM",0
 dev12	.equ	devunk
 dev13	.equ	devunk
 dev14	.equ	devunk

Source/CBIOS/cbios.asm

@@ -2929,6 +2929,12 @@ 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
+
 	; CHECK FOR ACTIVE AND RETURN IF NOT
 	PUSH	DE			; SAVE DE (HARD DISK VOLUME COUNTER)
 	PUSH	HL			; SAVE DRIVE LIST PTR
@@ -2944,6 +2950,7 @@ 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
@@ -3392,8 +3399,8 @@ DEV06	.DB	"SD$"
 DEV07	.DB	"PRPSD$"
 DEV08	.DB	"PPPSD$"
 DEV09	.DB	"HDSK$"
-DEV10	.EQU	DEVUNK
-DEV11	.EQU	DEVUNK
+DEV10	.DB	"PPA$"
+DEV11	.DB	"IMM$"
 DEV12	.EQU	DEVUNK
 DEV13	.EQU	DEVUNK
 DEV14	.EQU	DEVUNK

Source/CPM3/boot.z80

@@ -181,6 +181,12 @@ 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
+
 	; check for active and return if not
 	push	de			; save de (hard disk volume counter)
 	push	hl			; save drive list ptr
@@ -195,7 +201,8 @@ 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/SystemGuide.md

@@ -2221,7 +2221,7 @@ rate of the ASCI port(s) will be affected.
 
 | **Entry Parameters**                   | **Returned Values**                    |
 |----------------------------------------|----------------------------------------|
-| B: 0xF8                                | A: Status                              |
+| B: 0xF9                                | A: Status                              |
 | C: 0xF4                                |                                        |
 | L: LEDs                                |                                        |
 

Source/Doc/UserGuide.md

@@ -3808,6 +3808,7 @@ the RomWBW HBIOS configuration.
    - WDC Floppy Disk Controller w/ 3.5" HD Drives
    - Onboard IDE Hard Disk Interface Module
    - PPIDE Hard Disk Interface Module
+   - VGARC Video & Keyboard Module
  - Serial baud rate is usually determined by hardware for ACIA and
    SIO interfaces
 
@@ -3831,6 +3832,7 @@ the RomWBW HBIOS configuration.
    - WDC Floppy Disk Controller w/ 3.5" HD Drives
    - Onboard IDE Hard Disk Interface Module
    - PPIDE Hard Disk Interface Module
+   - VGARC Video & Keyboard Module
  - Serial baud rate is usually determined by hardware for ACIA and
    SIO interfaces
 
@@ -3854,6 +3856,7 @@ the RomWBW HBIOS configuration.
    - WDC Floppy Disk Controller w/ 3.5" HD Drives
    - Onboard IDE Hard Disk Interface Module
    - PPIDE Hard Disk Interface Module
+   - VGARC Video & Keyboard Module
  - Serial baud rate is usually determined by hardware for ACIA and
    SIO interfaces
 
@@ -3893,7 +3896,8 @@ 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                            |
@@ -3923,5 +3927,6 @@ may be discovered by RomWBW in your system.
 | USB-FIFO  | Char     | FT232H-based ECB USB FIFO                              |
 | VDU       | Video    | MC6845 Family Video Display Controller                 |
 | VGA       | Video    | HD6445CP4-based Video Display Controller               |
+| VRC       | Video    | VGARC Video Display Controller                         |
 | YM        | Audio    | YM2612 Programmable Sound Generator                    |
 | Z2U       | Char     | Zilog Z280 CPU Built-in Serial Ports                   |

Source/Fonts/Build.cmd

@@ -11,8 +11,8 @@ echo Preparing compressed font files...
 lzsa -f2 -r font8x8u.bin font8x8c.bin || exit /b
 lzsa -f2 -r font8x11u.bin font8x11c.bin || exit /b
 lzsa -f2 -r font8x16u.bin font8x16c.bin || exit /b
-
 lzsa -f2 -r fontcgau.bin fontcgac.bin || exit /b
+lzsa -f2 -r fontvgarcu.bin fontvgarcc.bin || exit /b
 
 fonttool font8x8u.bin > font8x8u.asm || exit /b
 fonttool font8x11u.bin > font8x11u.asm || exit /b
@@ -20,6 +20,7 @@ fonttool font8x16u.bin > font8x16u.asm || exit /b
 fonttool font8x8c.bin > font8x8c.asm || exit /b
 fonttool font8x11c.bin > font8x11c.asm || exit /b
 fonttool font8x16c.bin > font8x16c.asm || exit /b
-
 fonttool fontcgau.bin > fontcgau.asm || exit /b
 fonttool fontcgac.bin > fontcgac.asm || exit /b
+fonttool fontvgarcu.bin > fontvgarcu.asm || exit /b
+fonttool fontvgarcc.bin > fontvgarcc.asm || exit /b

Source/Fonts/Makefile

@@ -1,8 +1,8 @@
 OBJECTS = \
-	font8x8u.asm font8x11u.asm font8x16u.asm fontcgau.asm \
-	font8x8c.asm font8x11c.asm font8x16c.asm fontcgac.asm
+	font8x8u.asm font8x11u.asm font8x16u.asm fontcgau.asm fontvgarcu.asm \
+	font8x8c.asm font8x11c.asm font8x16c.asm fontcgac.asm fontvgarcc.asm
 
-OTHERS = font8x8c.bin font8x11c.bin font8x16c.bin fontcgac.bin
+OTHERS = font8x8c.bin font8x11c.bin font8x16c.bin fontcgac.bin fontvgarcc.bin
 
 TOOLS = ../../Tools
 
@@ -26,5 +26,8 @@ font8x16c.bin: font8x16u.bin
 fontcgac.bin: fontcgau.bin
 	$(BINDIR)/lzsa -f2 -r $< $@
 
+fontvgarcc.bin: fontvgarcu.bin
+	$(BINDIR)/lzsa -f2 -r $< $@
+
 %.asm: %.bin
 	$(BINDIR)/bin2asm $< > $@

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/RCZ180_ext.asm

@@ -29,7 +29,8 @@
 CPUOSC		.SET	18432000	; CPU OSC FREQ IN MHZ
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 MEMMGR		.SET	MM_Z2		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180]
 ;
@@ -48,6 +49,7 @@ 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	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 ;

Source/HBIOS/Config/RCZ180_nat.asm

@@ -29,7 +29,8 @@
 CPUOSC		.SET	18432000	; CPU OSC FREQ IN MHZ
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 MEMMGR		.SET	MM_Z180		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180]
 ;
@@ -48,9 +49,9 @@ 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	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
-;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC]
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER

Source/HBIOS/Config/RCZ280_ext.asm

@@ -30,7 +30,8 @@ CPUOSC		.SET	12000000	; CPU OSC FREQ IN MHZ
 INTMODE		.SET	1		; INTERRUPTS: 0=NONE, 1=MODE 1, 2=MODE 2
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 MEMMGR		.SET	MM_Z2		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180]
 ;
@@ -47,6 +48,7 @@ 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	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER

Source/HBIOS/Config/RCZ280_nat.asm

@@ -30,7 +30,8 @@ CPUOSC		.SET	12000000	; 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
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+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]
 ;
@@ -47,6 +48,7 @@ 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	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER

Source/HBIOS/Config/RCZ280_zz80mb.asm

@@ -32,7 +32,8 @@ CPUOSC		.SET	12000000	; 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
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+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]
 ;
@@ -53,7 +54,8 @@ 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)
-VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
+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]

Source/HBIOS/Config/RCZ280_zzrc.asm

@@ -32,7 +32,8 @@ 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
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+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]
 ;
@@ -61,7 +62,8 @@ 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)
-VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
+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]

Source/HBIOS/Config/RCZ80_easy.asm

@@ -33,13 +33,12 @@ CPUOSC		.SET	10000000	; CPU OSC FREQ IN MHZ
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 INTMODE		.SET	2		; INTERRUPTS: 0=NONE, 1=MODE 1, 2=MODE 2, 3=MODE 3 (Z280)
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 WDOGMODE	.SET	WDOG_EZZ80	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 WDOGIO		.SET	$6F		; WATCHDOG REGISTER ADR
 ;
-DIAGENABLE	.SET	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-;
 DSRTCENABLE	.SET	TRUE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
 RP5RTCENABLE	.SET	FALSE		; RP5C01 RTC BASED CLOCK (RP5RTC.ASM)
 ;
@@ -62,6 +61,7 @@ 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]
 MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
@@ -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

@@ -30,7 +30,8 @@ CPUOSC		.SET	7372800		; CPU OSC FREQ IN MHZ
 INTMODE		.SET	2		; INTERRUPTS: 0=NONE, 1=MODE 1, 2=MODE 2
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 DSRTCENABLE	.SET	TRUE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
 RP5RTCENABLE	.SET	FALSE		; RP5C01 RTC BASED CLOCK (RP5RTC.ASM)
@@ -57,6 +58,7 @@ 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]
 MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
@@ -70,5 +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

@@ -29,7 +29,8 @@
 CPUOSC		.SET	7372800		; CPU OSC FREQ IN MHZ
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 SKZENABLE	.SET	TRUE		; ENABLE SERGEY'S Z80-512K FEATURES
 SKZDIV		.SET	DIV_12		; UART CLK (CLK2) DIVIDER FOR Z80-512K
@@ -52,6 +53,7 @@ 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]
 MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
@@ -65,5 +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

@@ -29,7 +29,8 @@
 CPUOSC		.SET	7372800		; CPU OSC FREQ IN MHZ
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 DSRTCENABLE	.SET	TRUE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
 RP5RTCENABLE	.SET	FALSE		; RP5C01 RTC BASED CLOCK (RP5RTC.ASM)
@@ -39,10 +40,13 @@ 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]
 MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
@@ -57,5 +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

@@ -33,13 +33,13 @@ CPUOSC		.SET	16000000	; CPU OSC FREQ IN MHZ
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 INTMODE		.SET	2		; INTERRUPTS: 0=NONE, 1=MODE 1, 2=MODE 2, 3=MODE 3 (Z280)
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 EIPCENABLE	.SET	TRUE		; EIPC: ENABLE Z80 EIPC (Z84C15) INITIALIZATION
 WDOGMODE	.SET	WDOG_EZZ80	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 WDOGIO		.SET	$6F		; WATCHDOG REGISTER ADR
 ;
-DIAGENABLE	.SET	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
 LEDENABLE	.SET	TRUE		; ENABLES STATUS LED (SINGLE LED)
 LEDPORT		.SET	$6E		; STATUS LED PORT ADDRESS
 ;
@@ -67,6 +67,7 @@ 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]
 MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
@@ -81,5 +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

@@ -30,7 +30,8 @@
 CPUOSC		.SET	14745600	; CPU OSC FREQ IN MHZ
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE     .SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 RAMSIZE		.SET	1536		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 MEMMGR		.SET	MM_ZRC		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180]
@@ -44,7 +45,8 @@ 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]
 MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
-VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
+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]
@@ -57,5 +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

@@ -31,7 +31,8 @@
 CPUOSC		.SET	7372800		; CPU OSC FREQ IN MHZ
 CRTACT		.SET	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
+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!!!)
 ROMSIZE		.SET	0		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
@@ -48,6 +49,7 @@ 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]
 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	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	FALSE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
@@ -61,5 +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/Config/SBC_max.asm

@@ -35,7 +35,8 @@ USELZSA2	.SET	TRUE		; ENABLE FONT COMPRESSION
 ;
 KIOENABLE	.SET	TRUE		; ENABLE ZILOG KIO SUPPORT
 ;
-DIAGENABLE	.SET	TRUE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
 ;
 DSKYENABLE	.SET	TRUE		; ENABLES DSKY (DO NOT COMBINE WITH PPIDE)
 ;

Source/HBIOS/Config/SCZ180_sc126.asm

@@ -35,9 +35,9 @@ Z180_CLKDIV	.SET	1		; Z180: CHK DIV: 0=OSC/2, 1=OSC, 2=OSC*2
 Z180_MEMWAIT	.SET	0		; Z180: MEMORY WAIT STATES (0-3)
 Z180_IOWAIT	.SET	1		; Z180: I/O WAIT STATES TO ADD ABOVE 1 W/S BUILT-IN (0-3)
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
-DIAGENABLE	.SET	TRUE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.SET	$0D		; DIAGNOSTIC PORT ADDRESS
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
+FPLED_IO	.SET	$0D		; FP: PORT ADDRESS FOR FP LEDS
 ;
 DSRTCENABLE	.SET	TRUE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
 INTRTCENABLE	.SET	TRUE		; ENABLE PERIODIC INTERRUPT CLOCK DRIVER (INTRTC.ASM)
@@ -51,6 +51,7 @@ 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]
 MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	TRUE		; AY: AY-3-8910 / YM2149 SOUND DRIVER

Source/HBIOS/Config/SCZ180_sc130.asm

@@ -35,8 +35,10 @@ Z180_CLKDIV	.SET	1		; Z180: CHK DIV: 0=OSC/2, 1=OSC, 2=OSC*2
 Z180_MEMWAIT	.SET	0		; Z180: MEMORY WAIT STATES (0-3)
 Z180_IOWAIT	.SET	1		; Z180: I/O WAIT STATES TO ADD ABOVE 1 W/S BUILT-IN (0-3)
 ;
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
+;
 LEDENABLE	.SET	TRUE		; ENABLE STATUS LED (SINGLE LED)
-DIAGENABLE	.SET	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
 ;
 DSRTCENABLE	.SET	TRUE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
 INTRTCENABLE	.SET	TRUE		; ENABLE PERIODIC INTERRUPT CLOCK DRIVER (INTRTC.ASM)
@@ -50,6 +52,7 @@ 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]
 MKYENABLE	.SET	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
+VRCENABLE	.SET	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 VDAEMU_SERKBD	.SET	0		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ;
 AY38910ENABLE	.SET	TRUE		; AY: AY-3-8910 / YM2149 SOUND DRIVER

Source/HBIOS/Config/SCZ180_sc131.asm

@@ -34,8 +34,10 @@ Z180_CLKDIV	.SET	1		; Z180: CHK DIV: 0=OSC/2, 1=OSC, 2=OSC*2
 Z180_MEMWAIT	.SET	0		; Z180: MEMORY WAIT STATES (0-3)
 Z180_IOWAIT	.SET	1		; Z180: I/O WAIT STATES TO ADD ABOVE 1 W/S BUILT-IN (0-3)
 ;
+FPLED_ENABLE	.SET	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+;
 LEDENABLE	.SET	TRUE		; ENABLE STATUS LED (SINGLE LED)
-DIAGENABLE	.SET	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
 ;
 DSRTCENABLE	.SET	FALSE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
 INTRTCENABLE	.SET	TRUE		; ENABLE PERIODIC INTERRUPT CLOCK DRIVER (INTRTC.ASM)

Source/HBIOS/Config/SCZ180_sc140.asm

@@ -34,11 +34,10 @@ Z180_CLKDIV	.SET	1		; Z180: CHK DIV: 0=OSC/2, 1=OSC, 2=OSC*2
 Z180_MEMWAIT	.SET	0		; Z180: MEMORY WAIT STATES (0-3)
 Z180_IOWAIT	.SET	1		; Z180: I/O WAIT STATES TO ADD ABOVE 1 W/S BUILT-IN (0-3)
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.SET	$A0		; FRONT PANEL I/O PORT BASE ADDRESS
+FPLED_ENABLE	.SET	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+;
 LEDENABLE	.SET	TRUE		; ENABLE STATUS LED (SINGLE LED)
-DIAGENABLE	.SET	TRUE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.SET	$A0		; DIAGNOSTIC PORT ADDRESS
 ;
 DSRTCENABLE	.SET	TRUE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
 INTRTCENABLE	.SET	TRUE		; ENABLE PERIODIC INTERRUPT CLOCK DRIVER (INTRTC.ASM)

Source/HBIOS/Config/SCZ180_sc503.asm

@@ -34,11 +34,10 @@ Z180_CLKDIV	.SET	1		; Z180: CHK DIV: 0=OSC/2, 1=OSC, 2=OSC*2
 Z180_MEMWAIT	.SET	0		; Z180: MEMORY WAIT STATES (0-3)
 Z180_IOWAIT	.SET	1		; Z180: I/O WAIT STATES TO ADD ABOVE 1 W/S BUILT-IN (0-3)
 ;
-FPENABLE	.SET	TRUE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.SET	$A0		; FRONT PANEL I/O PORT BASE ADDRESS
+FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPSW_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
+;
 LEDENABLE	.SET	TRUE		; ENABLE STATUS LED (SINGLE LED)
-DIAGENABLE	.SET	TRUE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.SET	$A0		; DIAGNOSTIC PORT ADDRESS
 ;
 DSRTCENABLE	.SET	TRUE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
 INTRTCENABLE	.SET	TRUE		; ENABLE PERIODIC INTERRUPT CLOCK DRIVER (INTRTC.ASM)

Source/HBIOS/Makefile

@@ -24,7 +24,8 @@ endif
 
 include $(TOOLS)/Makefile.inc
 
-FONTS := font8x11c.asm font8x11u.asm font8x16c.asm font8x16u.asm font8x8c.asm font8x8u.asm fontcgac.asm fontcgau.asm
+FONTS := font8x11c.asm font8x11u.asm font8x16c.asm font8x16u.asm font8x8c.asm font8x8u.asm \
+	fontcgac.asm fontcgau.asm fontvgarcc.asm fontvgarcu.asm
 
 ifeq ($(CPUFAM),2)
 	TASM=$(BINDIR)/uz80as -t hd64180

Source/HBIOS/ansi.asm

@@ -634,9 +634,9 @@ ANSI_BEL:
 ANSI_BS:
 	LD	A,(ANSI_COL)	; GET CURRENT COLUMN
 	DEC	A		; BACK IT UP BY ONE
-	RET	C		; IF CARRY, MARGIN EXCEEDED, ABORT
+	RET	M		; IF CARRY, MARGIN EXCEEDED, ABORT
 	LD	(ANSI_COL),A	; SAVE NEW COLUMN
-	JP	ANSI_XY		; UDPATE CUSROR AND RETURN
+	JP	ANSI_XY		; UDPATE CURSOR AND RETURN
 ;
 ANSI_CR:
 	XOR	A		; ZERO ACCUM

Source/HBIOS/cfg_dyno.asm

@@ -66,11 +66,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED (SINGLE LED)
@@ -174,6 +175,7 @@ TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSMODE		.EQU	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -250,6 +252,10 @@ 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)
+;
 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

@@ -95,11 +95,12 @@ SKZDIV		.EQU	DIV_1		; UART CLK (CLK2) DIVIDER FOR Z80-512K
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 WDOGIO		.EQU	$6F		; WATCHDOG REGISTER ADR
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED (SINGLE LED)
@@ -228,6 +229,7 @@ TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|M
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 VGASIZ		.EQU	V80X25		; VGA: DISPLAY FORMAT [V80X25|V80X30|V80X43]
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -309,10 +311,26 @@ 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_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
+;
 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

@@ -60,11 +60,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	TRUE		; ENABLES STATUS LED
@@ -156,6 +157,7 @@ TMSMODE		.EQU	TMSMODE_MBC	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MS
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 VGASIZ		.EQU	V80X25		; VGA: DISPLAY FORMAT [V80X25|V80X30|V80X43]
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -232,11 +234,27 @@ 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
+;
 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

@@ -66,11 +66,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED (SINGLE LED)
@@ -167,6 +168,7 @@ TMSMODE		.EQU	TMSMODE_SCG	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MS
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 VGASIZ		.EQU	V80X25		; VGA: DISPLAY FORMAT [V80X25|V80X30|V80X43]
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -246,10 +248,16 @@ 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)
+;
 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

@@ -68,11 +68,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED
@@ -169,6 +170,7 @@ TMSMODE		.EQU	TMSMODE_N8	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSX
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 VGASIZ		.EQU	V80X25		; VGA: DISPLAY FORMAT [V80X25|V80X30|V80X43]
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -245,6 +247,10 @@ 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)
+;
 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

@@ -71,6 +71,13 @@ FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
 DIAGENABLE	.EQU	TRUE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
 DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
 DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+;
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	TRUE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED (SINGLE LED)
@@ -174,6 +181,7 @@ TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSMODE		.EQU	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -249,6 +257,25 @@ 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
 ;
 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

@@ -66,11 +66,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	TRUE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED (SINGLE LED)
@@ -184,6 +185,7 @@ TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSMODE		.EQU	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -259,6 +261,25 @@ 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
 ;
 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

@@ -65,11 +65,12 @@ SKZDIV		.EQU	DIV_1		; UART CLK (CLK2) DIVIDER FOR Z80-512K
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 WDOGIO		.EQU	$6E		; WATCHDOG REGISTER ADR
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	TRUE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED (SINGLE LED)
@@ -86,8 +87,8 @@ VDAEMU_SERKBD	.EQU	$FF		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ANSITRACE	.EQU	1		; ANSI DRIVER TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 PPKTRACE	.EQU	1		; PPK DRIVER TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 KBDTRACE	.EQU	1		; KBD DRIVER TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
-PPKKBLOUT	.EQU	KBD_US		; PPK KEYBOARD LANGUAGE: KBD_[US|DE]
 KBDKBLOUT	.EQU	KBD_US		; KBD KEYBOARD LANGUAGE: KBD_[US|DE]
+PPKKBLOUT	.EQU	KBD_US		; PPK KEYBOARD LANGUAGE: KBD_[US|DE]
 MKYENABLE	.EQU	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
 MKYKBLOUT	.EQU	KBD_US		; KBD KEYBOARD LANGUAGE: KBD_[US|DE]
 ;
@@ -178,6 +179,7 @@ TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSMODE		.EQU	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -253,6 +255,25 @@ 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
 ;
 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

@@ -66,11 +66,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED
@@ -158,6 +159,7 @@ TMSMODE		.EQU	TMSMODE_N8	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSX
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 VGASIZ		.EQU	V80X25		; VGA: DISPLAY FORMAT [V80X25|V80X30|V80X43]
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -234,6 +236,10 @@ 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)
+;
 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

@@ -60,11 +60,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED
@@ -156,6 +157,7 @@ TMSMODE		.EQU	TMSMODE_SCG	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MS
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 VGASIZ		.EQU	V80X25		; VGA: DISPLAY FORMAT [V80X25|V80X30|V80X43]
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -232,9 +234,10 @@ 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)
 ;
 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

@@ -66,11 +66,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$0D		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	TRUE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$0D		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	TRUE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$0D		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED (SINGLE LED)
@@ -174,6 +175,7 @@ TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSMODE		.EQU	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -249,6 +251,25 @@ 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
 ;
 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_una.asm

@@ -19,7 +19,9 @@
 CPUFAM		.EQU	CPU_Z80		; CPU FAMILY: CPU_[Z80|Z180|Z280]
 BIOS		.EQU	BIOS_UNA	; HARDWARE BIOS: BIOS_[WBW|UNA]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+;
+DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 BOOT_TIMEOUT	.EQU	-1		; AUTO BOOT TIMEOUT IN SECONDS, -1 TO DISABLE, 0 FOR IMMEDIATE
 ;
@@ -34,5 +36,3 @@ ROMSIZE		.EQU	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
 RTCIO		.EQU	$70		; RTC LATCH REGISTER ADR
 ;
 DSKYENABLE	.EQU	FALSE		; ENABLES DSKY (DO NOT COMBINE WITH PPIDE)
-
-DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING

Source/HBIOS/cfg_z80retro.asm

@@ -63,11 +63,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED
@@ -158,6 +159,7 @@ TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -204,6 +206,10 @@ 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)
+;
 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

@@ -52,11 +52,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED
@@ -128,6 +129,7 @@ TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -175,6 +177,10 @@ 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)
+;
 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

@@ -63,11 +63,12 @@ SKZENABLE	.EQU	FALSE		; ENABLE SERGEY'S Z80-512K FEATURES
 ;
 WDOGMODE	.EQU	WDOG_NONE	; WATCHDOG MODE: WDOG_[NONE|EZZ80|SKZ]
 ;
-FPENABLE	.EQU	FALSE		; ENABLES FRONT PANEL SWITCHES
-FPBASE		.EQU	$00		; FRONT PANEL I/O PORT BASE ADDRESS
-DIAGENABLE	.EQU	FALSE		; ENABLES OUTPUT TO 8 BIT LED DIAGNOSTIC PORT
-DIAGPORT	.EQU	$00		; DIAGNOSTIC PORT ADDRESS
-DIAGDISKIO	.EQU	TRUE		; ENABLES DISK I/O ACTIVITY ON DIAGNOSTIC LEDS
+FPLED_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL LEDS
+FPLED_IO	.EQU	$00		; FP: PORT ADDRESS FOR FP LEDS
+FPLED_DSKACT	.EQU	TRUE		; FP: ENABLES DISK I/O ACTIVITY ON FP LEDS
+FPSW_ENABLE	.EQU	FALSE		; FP: ENABLES FRONT PANEL SWITCHES
+FPSW_IO		.EQU	$00		; FP: PORT ADDRESS FOR FP SWITCHES
+;
 DIAGLVL		.EQU	DL_CRITICAL	; ERROR LEVEL REPORTING
 ;
 LEDENABLE	.EQU	FALSE		; ENABLES STATUS LED
@@ -139,6 +140,7 @@ TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|MSX9958|MSXKBD|COLECO]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
+VRCENABLE	.EQU	FALSE		; VRC: ENABLE VGARC VIDEO/KBD DRIVER (VRC.ASM)
 ;
 MDENABLE	.EQU	TRUE		; MD: ENABLE MEMORY (ROM/RAM) DISK DRIVER (MD.ASM)
 MDROM		.EQU	TRUE		; MD: ENABLE ROM DISK
@@ -186,6 +188,10 @@ 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)
+;
 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/cvdu.asm

@@ -902,5 +902,6 @@ CVDU_INIT8563:
 ;==================================================================================================
 ;
 CVDU_IDAT:
+	.DB	KBDMODE_PS2	; PS/2 8242 KEYBOARD CONTROLLER
 	.DB	CVDU_KBDST
 	.DB	CVDU_KBDDATA

Source/HBIOS/gdc.asm

@@ -325,5 +325,6 @@ GDC_POS		.DW 	0	; CURRENT DISPLAY POSITION
 ;==================================================================================================
 ;
 GDC_IDAT:
+	.DB	KBDMODE_PS2	; PS/2 8242 KEYBOARD CONTROLLER
 	.DB	GDC_KBDST
 	.DB	GDC_KBDDATA

Source/HBIOS/hbios.asm

@@ -105,10 +105,11 @@ MODCNT	.SET	MODCNT + 1
 ;
 ;
 ;
-#IF (DIAGENABLE)
+#IF (FPLED_ENABLE)
 #DEFINE	DIAG(N)	PUSH AF
   #DEFCONT \	LD A,N
-  #DEFCONT \	OUT (DIAGPORT),A
+;  #DEFCONT \	OUT (DIAGPORT),A
+  #DEFCONT \	CALL	FP_SETLEDS
   #DEFCONT \	POP AF
 #ELSE
 #DEFINE	DIAG(N)	\;
@@ -1109,16 +1110,9 @@ HB_START:
 ;
 #IFDEF APPBOOT
   #IF (MEMMGR == MM_Z280)
-	LD	A,DIAG_01
-	OUT	(DIAGPORT),A
-	LD	DE,Z280_BOOTERR
-	LD	C,9
-	LD	A,DIAG_02
-	OUT	(DIAGPORT),A
-	CALL	$0005
-	LD	A,DIAG_04
-	OUT	(DIAGPORT),A
-	RET
+	LD	DE,Z280_BOOTERR		; POINT TO ERROR MESSAGE
+	LD	C,9			; BDOS FUNC 9: WRITE STR
+	JP	$0005			; DO IT AND RETURN TO OS
 ;
 Z280_BOOTERR	.TEXT	"\r\n\r\n*** Application mode boot not supported under Z280 native memory management!!!\r\n\r\n$"
   #ENDIF
@@ -1144,9 +1138,10 @@ Z280_BOOTERR	.TEXT	"\r\n\r\n*** Application mode boot not supported under Z280 n
 	OUT0	(RPH_ACR),A		; ... REGISTER IS INITIALIZED
 #ENDIF
 ;
-#IF (DIAGENABLE)
+#IF (FPLED_ENABLE)
+	; NO STACK YET, SO CAN'T USE DIAG() MACRO
 	LD	A,DIAG_01
-	OUT	(DIAGPORT),A
+	OUT	(FPLED_IO),A
 #ENDIF
 #IF (LEDENABLE)
   #IF (LEDMODE == LEDMODE_STD)
@@ -1255,8 +1250,6 @@ Z280_INITZ:
 	LD	A,Z180_BASE
 	OUT0	($3F),A		; AT RESET, ICR IS AT $3F
 
-	DIAG(DIAG_02)
-
 	; DISABLE REFRESH
 	XOR	A
 	OUT0	(Z180_RCR),A
@@ -1268,11 +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
@@ -1349,10 +1342,12 @@ Z280_INITZ:
 ; NOT WANT TO EFFECT RAM UNTIL AFTER THE BACKUP BATTERY STATUS CHECK
 ; IS PERFORMED NEXT.
 ;
-#IF (DIAGENABLE)
+#IF (FPLED_ENABLE)
+	; NO STACK YET, SO CAN'T USE DIAG() MACRO
 	LD	A,DIAG_02
-	OUT	(DIAGPORT),A
+	OUT	(FPLED_IO),A
 #ENDIF
+
 ;
 ; WE USE THE TWO BYTES IMMEDIATELY BELOW THE PROXY TO STORE A COUPLE
 ; VALUES TEMPORARILY BECAUSE WE MAY BE OPERATING IN ROM AT THIS POINT.
@@ -2232,29 +2227,6 @@ NOT_REC_M0:
 	CALL	DSKY_SHOW
 #ENDIF
 ;
-#IF FPENABLE
-;
-; IF FRONT PANEL IS ENABLED IN CONFIG, WE NEED TO CHECK TO SEE IF THE
-; HARDWARE REALLY EXISTS.  THE ONLY WAY TO DO THAT IS TO SEE IF THE
-; FRONT PANEL PORT SEEMS TO BE VALID (NOT FLOATING).  HERE WE JUST
-; DO THE CHECKING AND RECORD WHETHER THE FP SWITCHES ARE USEABLE.
-;
-	; THE SWITCH HARDWARE MAY OR MAY NOT BE INSTALLED.  SO, HERE WE
-	; ATTEMPT TO CONFIRM WE HAVE A VALID PORT.  CREDIT TO STEPHEN
-	; COUSINS FOR THIS APPROACH.
-	LD	C,FPBASE		; ADR OF SWITCH PORT
-	IN	C,(C)			; READ IT USING IN (C)
-	IN	A,(FPBASE)		; READ IT USING IN (PORT)
-	CP	C			; PORT FLOATING ON MISMATCH
-	JR	NZ,HB_SWZ		; ABORT IF FLOATING
-	CP	$FF			; $FF ALSO MEANS PORT INACTIVE
-	JR	Z,HB_SWZ		; ABORT IF SO
-	OR	$FF			; SIGNAL FP EXISTS
-	LD	(HB_HASFP),A		; AND SAVE IT
-HB_SWZ:
-;
-#ENDIF
-;
 #IF FALSE
 ;
 ; TEST DEBUG ***************************************************************************************
@@ -2792,7 +2764,12 @@ HB_WDZ:
 ;
 #ENDIF
 ;
-#IF FPENABLE
+; THIS IS A GOOD PLACE TO DETERMINE IF FRONT PANEL HARDWARE REALLY
+; EXISTS.
+;
+	CALL	FP_DETECT
+;
+#IF (FPSW_ENABLE)
 ;
 ; IF WE HAVE FRONT PANEL SWITCHES, THIS IS THE RIGHT PLACE TO HANDLE
 ; ANY CONSOLE CHANGE REQUESTS.  THE FRONT PANEL HAS TWO SWITCHES
@@ -2802,12 +2779,12 @@ HB_WDZ:
 ; DEVICE.
 ;
 	PRTS("\r\nFP: IO=0x$")
-	LD	A,FPBASE
+	LD	A,FPSW_IO
 	CALL	PRTHEXBYTE
 ;
 	; THE EXISTENCE OF THE FP WAS TESTED EARLIER.  IF IT DOESN'T
 	; EXIST, BAIL OUT.
-	LD	A,(HB_HASFP)		; GET FP EXISTENCE FLAG
+	LD	A,(FPSW_ACTIVE)		; GET FP EXISTENCE FLAG
 	OR	A			; SET FLAGS
 	JR	NZ,HB_FP1		; IF WE HAVE ONE, CONTINUE
 ;
@@ -2823,7 +2800,7 @@ HB_FP1:
 	; OF A CRT DEVICE -- IT WILL JUST FAILBACK TO FIRST SERIAL
 	; PORT.
 	PRTS(" SWITCHES=0x$")		; TAG
-	IN	A,(FPBASE)		; GET SWITCH SETTINGS
+	CALL	FP_GETSWITCHES		; GET SWITCH SETTINGS
 	CALL	PRTHEXBYTE		; DISPLAY VALUE
 	LD	B,A			; SAVE IN REG B
 	AND	SW_CRT			; TEST CRT BIT
@@ -3232,6 +3209,9 @@ HB_INITTBL:
 #IF (TMSENABLE)
 	.DW	TMS_INIT
 #ENDIF
+#IF (VRCENABLE)
+	.DW	VRC_INIT
+#ENDIF
 ;#IF (DSKYENABLE)
 ;	.DW	DSKY_INIT
 ;#ENDIF
@@ -3259,6 +3239,12 @@ HB_INITTBL:
 #IF (HDSKENABLE)
 	.DW	HDSK_INIT
 #ENDIF
+#IF (PPAENABLE)
+	.DW	PPA_INIT
+#ENDIF
+#IF (IMMENABLE)
+	.DW	IMM_INIT
+#ENDIF
 #IF (PRPENABLE)
 	.DW	PRP_INIT
 #ENDIF
@@ -3488,7 +3474,7 @@ HB_DSKREAD:
 ;
 	LD	(HB_DSKCMD),BC		; SAVE HBIOS FUNC & UNIT
 ;
-#IF (DIAGENABLE)
+#IF (FPLED_ENABLE & FPLED_DSKACT)
 	; SAVE DISK UNIT NUMBER BIT MASK
 	LD	A,C			; GET DISK UNIT NUMBER
 	LD	B,A			; PUT IN B FOR LOOP COUNTER
@@ -3578,7 +3564,7 @@ HB_DSKWRITE:
 ;
 	LD	(HB_DSKCMD),BC		; SAVE HBIOS FUNC & UNIT
 ;
-#IF (DIAGENABLE)
+#IF (FPLED_ENABLE & FPLED_DSKACT)
 	; SAVE DISK UNIT NUMBER BIT MASK
 	LD	A,C			; GET DISK UNIT NUMBER
 	LD	B,A			; PUT IN B FOR LOOP COUNTER
@@ -3675,9 +3661,9 @@ HB_DSKIOX:
 ;
 HB_DSKFN:
 	PUSH	BC			; SAVE COUNTERS
-#IF (DIAGENABLE & DIAGDISKIO)
+#IF (FPLED_ENABLE & FPLED_DSKACT)
 	LD	A,(HB_DSKBIT)		; LOAD UNIT DISK BIT MASK
-	OUT	(DIAGPORT),A		; DISPLAY ON DIAG LEDS
+	CALL	FP_SETLEDS		; DISPLAY ON DIAG LEDS
 #ENDIF
 #IF (LEDENABLE & LEDDISKIO)
 	LED(%00000101)			; BIT 0 FOR TINY Z80 & MBC, BIT 2 FOR SCXXX
@@ -3685,8 +3671,8 @@ HB_DSKFN:
 	LD	E,1			; ONE SECTOR
 HB_DSKFNADR	.EQU	$+1
 	CALL	PANIC			; READ ONE SECTOR
-#IF (DIAGENABLE & DIAGDISKIO)
-	DIAG(DIAG_00)			; CLEAR DIAG LEDS
+#IF (FPLED_ENABLE & FPLED_DSKACT)
+	DIAG($00)			; CLEAR DIAG LEDS
 #ENDIF
 #IF (LEDENABLE & LEDDISKIO)
 	LED($00)
@@ -4536,11 +4522,11 @@ SYS_GETCPUSPD1:
 ;
 SYS_GETPANEL:
 ;
-#IF FPENABLE
-	LD	A,(HB_HASFP)		; GET FP EXISTS FLAG
+#IF (FPSW_ENABLE)
+	LD	A,(FPSW_ACTIVE)		; FP SWITCHES ACTIVE?
 	OR	A			; SET FLAGS
 	JR	Z,SYS_GETPANEL1		; HANDLE NOT EXISTS
-	IN	A,(FPBASE)		; READ SWITCHES
+	CALL	FP_GETSWITCHES		; READ SWITCHES
 	LD	H,0			; FOR FUTURE
 	LD	L,A			; PUT SWITCHES VALUE IN L
 	XOR	A			; SIGNAL SUCCESS
@@ -4848,9 +4834,9 @@ SYS_SETCPUSPD_ERR:
 ;
 SYS_SETPANEL:
 ;
-#IF DIAGENABLE
+#IF (FPLED_ENABLE)
 	LD	A,L
-	OUT	(DIAGPORT),A
+	CALL	FP_SETLEDS
 	XOR	A
 	RET
 #ELSE
@@ -6181,6 +6167,15 @@ SIZ_GDC	.EQU	$ - ORG_GDC
 		.ECHO	" bytes.\n"
 #ENDIF
 ;
+#IF (VRCENABLE)
+ORG_VRC	.EQU	$
+  #INCLUDE "vrc.asm"
+SIZ_VRC	.EQU	$ - ORG_VRC
+		.ECHO	"VRC occupies "
+		.ECHO	SIZ_VRC
+		.ECHO	" bytes.\n"
+#ENDIF
+;
 #IF (DMAENABLE)
 ORG_DMA	.EQU	$
 #INCLUDE "dma.asm"
@@ -6236,12 +6231,22 @@ FONTCGA:
 	.ECHO	" CGA"
 #ENDIF
 ;
+#IFDEF USEFONTVGARC
+FONTVGARC:
+  #IF USELZSA2
+    #INCLUDE "fontvgarcc.asm"
+  #ELSE
+    #INCLUDE "fontvgarcu.asm"
+  #ENDIF
+	.ECHO	" VGARC"
+#ENDIF
+;
 SIZ_FONTS	.EQU	$ - ORG_FONTS
 		.ECHO	" occupy "
 		.ECHO	SIZ_FONTS
 		.ECHO	" bytes.\n"
 ;
-#IF (CVDUENABLE | VGAENABLE) | GDCENABLE | (TMSENABLE & ((TMSMODE == TMSMODE_MSXKBD) | (TMSMODE == TMSMODE_MBC)))
+#IF (CVDUENABLE | VGAENABLE | GDCENABLE | VRCENABLE | (TMSENABLE & ((TMSMODE == TMSMODE_MSXKBD) | (TMSMODE == TMSMODE_MBC))))
 ORG_KBD		.EQU	$
   #INCLUDE "kbd.asm"
 SIZ_KBD		.EQU	$ - ORG_KBD
@@ -6349,6 +6354,24 @@ 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 (TERMENABLE)
 ORG_TERM	.EQU	$
   #INCLUDE "term.asm"
@@ -6438,11 +6461,101 @@ SIZ_YM2612	.EQU	$ - ORG_YM2612
 ;
 ; INCLUDE LZSA2 decompression engine if required.
 ;
-#IF ((VGAENABLE | CVDUENABLE | TMSENABLE | GDCENABLE) & USELZSA2)
+#IF ((VGAENABLE | CVDUENABLE | TMSENABLE | GDCENABLE | VRCENABLE) & USELZSA2)
 #INCLUDE "unlzsa2s.asm"
 #ENDIF
 ;
-; DETECT CPU SPEED USING DS-1302 RTC
+;==================================================================================================
+; FRONT PANEL SUPPORT
+;==================================================================================================
+;
+; FRONT PANEL HARDWARE DETECTION
+;
+; WE ARE REALLY JUST CHECKING FOR SWITCHES.  NO WAY TO QUERY FOR
+; LEDS.  WE CHECK FOR I/O CONFLICT WITH VGARC IF ACTIVE.
+;
+FP_DETECT:
+	; D: LEDS ACTIVE, E: SWITCHES ACTIVE
+	LD	D,TRUE			; ASSUME ACTIVE FOR NOW
+	LD	E,TRUE			; ASSUME ACTIVE FOR NOW
+;
+	; IF VGARC IS ENABLED, CHECK IF IT IS ACTIVE.  IF SO AND THE
+	; I/O PORTS CONFLICT, DEACTIVATE FRONT PANEL.
+;
+  #IF (VRCENABLE)
+	LD	A,(VRC_ACTIVE)		; GET VGARC ACTIVE STATUS
+	OR	A			; SET FLAGS
+	JR	Z,FP_DETECT1		; IF NO, CONTINUE
+    #IF ((FPLED_IO >= $00) & (FPLED_IO <= $0F))
+	; CONFLICT, DEACTIVATE LEDS
+	LD	D,FALSE			; FP LEDS NOT ACTIVE
+    #ENDIF
+    #IF ((FPSW_IO >= $00) & (FPSW_IO <= $0F))
+	; CONFLICT, DEACTIVATE SWITCHES
+	LD	E,FALSE			; FP SWITCHES NOT ACTIVE
+    #ENDIF
+  #ENDIF
+;
+FP_DETECT1:
+	; THE SWITCH HARDWARE MAY OR MAY NOT BE INSTALLED.  SO, HERE WE
+	; ATTEMPT TO CONFIRM WE HAVE A VALID PORT.  CREDIT TO STEPHEN
+	; COUSINS FOR THIS APPROACH.
+	LD	C,FPSW_IO		; ADR OF SWITCH PORT
+	IN	C,(C)			; READ IT USING IN (C)
+	IN	A,(FPSW_IO)		; READ IT USING IN (PORT)
+	CP	C			; PORT FLOATING ON MISMATCH
+	JR	NZ,FP_DETECT2		; NO H/W, SET FLAG
+	CP	$FF			; PORT FLOATING ON $FF
+	JR	Z,FP_DETECT2		; NO H/W, SET FLAG
+	JR	FP_DETECTZ		; H/W EXISTS, DONE
+;
+FP_DETECT2:
+	LD	E,FALSE			; RECORD NOT PRESENT
+;
+FP_DETECTZ:
+	LD	(FP_ACTIVE),DE		; RECORD RESULTS
+	RET				; DONE
+;
+#IF (FPLED_ENABLE)
+;
+; SET FRONT PANEL LEDS FROM VALUE IN A
+;
+FP_SETLEDS:
+	PUSH	HL			; SAVE HL
+	LD	L,A			; LED VALUE TO L
+	LD	A,(FPLED_ACTIVE)	; LEDS ACTIVE?
+	OR	A			; SET FLAGS
+	LD	A,L			; RESTORE REG A
+	JR	Z,FP_SETLEDS1		; BAIL OUT IF NOT ACTIVE
+	OUT	(FPLED_IO),A		; WRITE 
+FP_SETLEDS1:
+	POP	HL			; RESTORE HL
+	RET				; DONE
+;
+;
+#ENDIF
+;
+#IF (FPSW_ENABLE)
+;
+; GET FRONT PANEL SWITCH SETTINGS
+;
+FP_GETSWITCHES:
+	LD	A,(FPSW_ACTIVE)		; SWITCHES ACTIVE?
+	OR	A			; SET FLAGS
+	RET	Z			; BAIL OUT IF NOT ACTIVE
+	IN	A,(FPSW_IO)		; READ SWITCHES
+	RET				; DONE
+;
+;
+#ENDIF
+;
+FP_ACTIVE:
+FPSW_ACTIVE	.DB	TRUE
+FPLED_ACTIVE	.DB	TRUE
+;
+;==================================================================================================
+; CPU SPEED DETECTION USING DS-1302 RTC
+;==================================================================================================
 ;
 HB_CPUSPD:
 ;
@@ -6558,116 +6671,6 @@ HB_CPUSPD2:
 	OR	$FF			; SIGNAL ERROR
 	RET				; AND DONE
 ;
-; SYSTEM CHECK: DUMP MACHINE STATE AND CONTINUE?
-;
-SYSCHKA:
-	; CHECK DIAG LEVEL TO SEE IF WE SHOULD DISPLAY
-	PUSH	AF			; PRESERVE INCOMING AF VALUE
-	LD	A,(CB_DIAGLVL)		; GET DIAGNOSTIC LEVEL
-	CP	DL_ERROR		; >= ERROR LEVEL
-	JR	C,SYSCHK1		; IF NOT, GO HOME
-	POP	AF			; RESTORE INCOMING AF VALUE
-;
-	; DISPLAY SYSCHK MESSAGE
-	PUSH	DE			; PRESERVE DE VALUE
-	LD	DE,STR_SYSCHK		; POINT TO PREFIX STRING
-	CALL	WRITESTR		; PRINT IT
-	POP	DE			; RESTORE DE VALUE
-	CALL	XREGDMP			; DUMP REGISTERS
-
-	; DISPLAY ERROR CODE. IT IS AT RETURN ADDRESS+1 .. LD A,XX
-	EX	(SP),HL			; GET RETURN ADDRESS
-	INC	HL			; POINT TO THE ERROR CODE
-	PUSH	AF
-	LD	A,(HL)			; DISPLAY
-	CALL	PRTHEXBYTE
-	POP	AF
-	DEC	HL			; RESTORE RETURN ADDRESS
-	EX	(SP),HL
-;
-	JR	CONTINUE		; CHECK W/ USER
-;
-SYSCHK1:
-	; RETURN IF MESSAGING BYPASSED BY DIAG LEVEL
-	POP	AF
-	RET
-;
-; PANIC: DUMP MACHINE STATE AND HALT
-;
-PANIC:
-	PUSH	DE
-	LD	DE,STR_PANIC
-	CALL	WRITESTR
-	POP	DE
-	CALL	XREGDMP			; DUMP REGISTERS
-	JR	SYSHALT			; FULL STOP
-;
-;
-;
-CONTINUE:
-	PUSH	AF
-CONTINUE1:
-	PUSH	DE
-	LD	DE,STR_CONTINUE
-	CALL	WRITESTR
-	POP	DE
-	CALL	CIN
-	RES	5,A			; FORCE UPPERCASE (IMPERFECTLY)
-	CALL	COUT			; ECHO
-	CP	'Y'
-	JR	Z,CONTINUE3
-	CP	'N'
-	JR	Z,SYSHALT
-	JR	CONTINUE1
-CONTINUE3:
-	CALL	NEWLINE
-	POP	AF
-	RET
-;
-;
-;
-SYSHALT:
-	LD	DE,STR_HALT
-	CALL	WRITESTR
-	DI
-	HALT
-;
-; PRINT VALUE OF HL AS THOUSANDTHS, IE. 0.000
-;
-PRTD3M:
-	PUSH	BC
-	PUSH	DE
-	PUSH	HL
-	LD	E,'0'
-	LD	BC,-10000
-	CALL	PRTD3M1
-	LD	E,0
-	LD	BC,-1000
-	CALL	PRTD3M1
-	CALL	PC_PERIOD
-	LD	BC,-100
-	CALL	PRTD3M1
-	LD	C,-10
-	CALL	PRTD3M1
-	LD	C,-1
-	CALL	PRTD3M1
-	POP	HL
-	POP	DE
-	POP	BC
-	RET
-PRTD3M1:
-	LD	A,'0' - 1
-PRTD3M2:
-	INC	A
-	ADD	HL,BC
-	JR	C,PRTD3M2
-	SBC	HL,BC
-	CP	E
-	JR	Z,PRTD3M3
-	LD	E,0
-	CALL	COUT
-PRTD3M3:
-	RET
 ;==================================================================================================
 ; DISPLAY SUMMARY OF ATTACHED UNITS/DEVICES
 ;==================================================================================================
@@ -6783,7 +6786,6 @@ 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
@@ -6798,7 +6800,6 @@ 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$")			; PRINT SUFFIX
 	CALL	PC_COMMA
@@ -7155,6 +7156,8 @@ PS_DDSD		.TEXT	"SD$"
 PS_DDPRPSD	.TEXT	"PRPSD$"
 PS_DDPPPSD	.TEXT	"PPPSD$"
 PS_DDHDSK	.TEXT	"HDSK$"
+PS_DDPPA	.TEXT	"PPA$"
+PS_DDIMM	.TEXT	"IMM$"
 ;
 ; DISK TYPE STRINGS
 ;
@@ -7221,6 +7224,7 @@ PS_VDCVDU	.TEXT	"CVDU$"
 PS_VDGDC	.TEXT	"GDC$"
 PS_VDTMS	.TEXT	"TMS$"
 PS_VDVGA	.TEXT	"VGA$"
+PS_VDVRC	.TEXT	"VRC$"
 ;
 ; VIDEO TYPE STRINGS
 ;
@@ -7360,7 +7364,7 @@ CST2:
 	RET
 ;
 ;==================================================================================================
-;   MISCELLANEOUS UTILITY FUNCTIONS
+;   INTERNAL UTILITY FUNCTIONS
 ;==================================================================================================
 ;
 ; SET HL TO IY+A, A IS TRASHED
@@ -7397,6 +7401,117 @@ HB_CHS2LBA:
 	XOR	A
 	RET
 ;
+; SYSTEM CHECK: DUMP MACHINE STATE AND CONTINUE?
+;
+SYSCHKA:
+	; CHECK DIAG LEVEL TO SEE IF WE SHOULD DISPLAY
+	PUSH	AF			; PRESERVE INCOMING AF VALUE
+	LD	A,(CB_DIAGLVL)		; GET DIAGNOSTIC LEVEL
+	CP	DL_ERROR		; >= ERROR LEVEL
+	JR	C,SYSCHK1		; IF NOT, GO HOME
+	POP	AF			; RESTORE INCOMING AF VALUE
+;
+	; DISPLAY SYSCHK MESSAGE
+	PUSH	DE			; PRESERVE DE VALUE
+	LD	DE,STR_SYSCHK		; POINT TO PREFIX STRING
+	CALL	WRITESTR		; PRINT IT
+	POP	DE			; RESTORE DE VALUE
+	CALL	XREGDMP			; DUMP REGISTERS
+
+	; DISPLAY ERROR CODE. IT IS AT RETURN ADDRESS+1 .. LD A,XX
+	EX	(SP),HL			; GET RETURN ADDRESS
+	INC	HL			; POINT TO THE ERROR CODE
+	PUSH	AF
+	LD	A,(HL)			; DISPLAY
+	CALL	PRTHEXBYTE
+	POP	AF
+	DEC	HL			; RESTORE RETURN ADDRESS
+	EX	(SP),HL
+;
+	JR	CONTINUE		; CHECK W/ USER
+;
+SYSCHK1:
+	; RETURN IF MESSAGING BYPASSED BY DIAG LEVEL
+	POP	AF
+	RET
+;
+; PANIC: DUMP MACHINE STATE AND HALT
+;
+PANIC:
+	PUSH	DE
+	LD	DE,STR_PANIC
+	CALL	WRITESTR
+	POP	DE
+	CALL	XREGDMP			; DUMP REGISTERS
+	JR	SYSHALT			; FULL STOP
+;
+;
+;
+CONTINUE:
+	PUSH	AF
+CONTINUE1:
+	PUSH	DE
+	LD	DE,STR_CONTINUE
+	CALL	WRITESTR
+	POP	DE
+	CALL	CIN
+	RES	5,A			; FORCE UPPERCASE (IMPERFECTLY)
+	CALL	COUT			; ECHO
+	CP	'Y'
+	JR	Z,CONTINUE3
+	CP	'N'
+	JR	Z,SYSHALT
+	JR	CONTINUE1
+CONTINUE3:
+	CALL	NEWLINE
+	POP	AF
+	RET
+;
+;
+;
+SYSHALT:
+	LD	DE,STR_HALT
+	CALL	WRITESTR
+	DI
+	HALT
+;
+; PRINT VALUE OF HL AS THOUSANDTHS, IE. 0.000
+;
+PRTD3M:
+	PUSH	BC
+	PUSH	DE
+	PUSH	HL
+	LD	E,'0'
+	LD	BC,-10000
+	CALL	PRTD3M1
+	LD	E,0
+	LD	BC,-1000
+	CALL	PRTD3M1
+	CALL	PC_PERIOD
+	LD	BC,-100
+	CALL	PRTD3M1
+	LD	C,-10
+	CALL	PRTD3M1
+	LD	C,-1
+	CALL	PRTD3M1
+	POP	HL
+	POP	DE
+	POP	BC
+	RET
+PRTD3M1:
+	LD	A,'0' - 1
+PRTD3M2:
+	INC	A
+	ADD	HL,BC
+	JR	C,PRTD3M2
+	SBC	HL,BC
+	CP	E
+	JR	Z,PRTD3M3
+	LD	E,0
+	CALL	COUT
+PRTD3M3:
+	RET
+;
 ;==================================================================================================
 ;   HBIOS GLOBAL DATA
 ;==================================================================================================

Source/HBIOS/hbios.inc

@@ -321,6 +321,8 @@ DIODEV_SD	.EQU	$60
 DIODEV_PRPSD	.EQU	$70
 DIODEV_PPPSD	.EQU	$80
 DIODEV_HDSK	.EQU	$90
+DIODEV_PPA	.EQU	$A0
+DIODEV_IMM	.EQU	$B0
 ;
 ; RTC DEVICE IDS
 ;
@@ -338,7 +340,7 @@ 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_V9958	.EQU	$50		; V9958 VDU
+VDADEV_VRC	.EQU	$50		; VGARC
 ;
 ; SOUND DEVICE IDS
 ;

Source/HBIOS/ide.asm

@@ -4,7 +4,6 @@
 ;=============================================================================
 ;
 ; TODO:
-; - FIX SCALER CONSTANT
 ; - GOPARTNER NEEDS TO HANDLE "NO PARTNER" CONDITION
 ; - IMPLEMENT H/W PROBES FOR DIO AND DIDE
 ;
@@ -126,9 +125,13 @@ IDE_REG_DRVADR	.EQU	$0F	; DRIVE ADDRESS REGISTER (R)
 ;
 ; COMMAND BYTES
 ;
+IDE_CIDE_NOP		.EQU	$00
+IDE_CIDE_DEVRES		.EQU	$08
 IDE_CIDE_RECAL		.EQU	$10
 IDE_CIDE_READ		.EQU	$20
 IDE_CIDE_WRITE		.EQU	$30
+IDE_CIDE_DEVDIAG	.EQU	$90
+IDE_CIDE_IDPKTDEV	.EQU	$A1
 IDE_CIDE_IDDEV		.EQU	$EC
 IDE_CIDE_SETFEAT	.EQU	$EF
 ;
@@ -153,6 +156,7 @@ IDE_STIOERR	.EQU	-4
 IDE_STRDYTO	.EQU	-5
 IDE_STDRQTO	.EQU	-6
 IDE_STBSYTO	.EQU	-7
+IDE_STNOTSUP	.EQU	-8
 ;
 ; DRIVE SELECTION BYTES (FOR USE IN DRIVE/HEAD REGISTER)
 ;
@@ -290,15 +294,18 @@ IDE_DEV2S:	; DEVICE 2, SLAVE
 ;
 ; THE IDE_WAITXXX FUNCTIONS ARE BUILT TO TIMEOUT AS NEEDED SO DRIVER WILL
 ; NOT HANG IF DEVICE IS UNRESPONSIVE.  DIFFERENT TIMEOUTS ARE USED DEPENDING
-; ON THE SITUATION.  GENERALLY, THE FAST TIMEOUT IS USED TO PROBE FOR DEVICES
-; USING FUNCTIONS THAT PERFORM NO I/O.	OTHERWISE THE NORMAL TIMEOUT IS USED.
-; IDE SPEC ALLOWS FOR UP TO 30 SECS MAX TO RESPOND.  IN PRACTICE, THIS IS WAY
-; TOO LONG, BUT IF YOU ARE USING A VERY OLD DEVICE, THESE TIMEOUTS MAY NEED TO
-; BE ADJUSTED. NOTE THAT THESE ARE BYTE VALUES, SO YOU CANNOT EXCEED 255.
-; THE TIMEOUTS ARE IN UNITS OF .05 SECONDS.
+; ON THE SITUATION.  THE SLOW TIMEOUT IS USED TO WAIT FOR A DEVICE TO
+; BECOME READY AFTER A HARD RESET (SPIN UP, ETC.).  THE NORMAL TIMEOUT
+; IS USED DURING NORMAL OPERATION FOR ALL I/O OPERATIONS WHICH SHOULD
+; OCCUR PRETTY FAST.  NOTE THAT THE ATA SPEC ALLOWS UP TO 30 SECONDS
+; FOR DEVICES TO RESPOND.  WE ARE USING MUCH MORE AGGRESSIVE VALUES
+; BASED ON REAL WORLD EXPERIENCE.
+; THE PICO TIMEOUT (TOPICO) IS A SPECIAL TIMEOUT FOR THE RC2014 SD
+; PICO TO WAIT FOR THE PICO DEVICE TO INITIALIZE.
 ;
-IDE_TONORM	.EQU	200		; NORMAL TIMEOUT IS 10 SECS
-IDE_TOFAST	.EQU	10		; FAST TIMEOUT IS 0.5 SECS
+IDE_TOSLOW	.EQU	200		; SLOW TIMEOUT IS 20 SECS
+IDE_TONORM	.EQU	5		; NORMAL TIMEOUT IS 0.55 SECS
+IDE_TOPICO	.EQU	50		; RC2014 SD PICO (5 SECONDS)
 ;
 ;=============================================================================
 ; INITIALIZATION ENTRY POINT
@@ -306,9 +313,12 @@ IDE_TOFAST	.EQU	10		; FAST TIMEOUT IS 0.5 SECS
 ;
 IDE_INIT:
 	; COMPUTE CPU SPEED COMPENSATED TIMEOUT SCALER
-	; AT 1MHZ, THE SCALER IS 218 (50000US / 229TS = 218)
-	; SCALER IS THEREFORE 218 * CPU SPEED IN MHZ
-	LD	DE,961			; LOAD SCALER FOR 1MHZ
+	; ONE INTERNAL LOOP IN WAITBSY IS 180TS.  ON A 1 MHZ CPU, 1 TS
+	; TAKES 1NS.  SO 1/10 SECOND IS 100000 TS ON A 1 MHZ CPU.
+	; SINCE 1 INTERNAL LOOP IS 180 TS, IT TAKES 100000 / 180 = 556
+	; INTERNAL LOOPS FOR 1/10 SECOND.  SO, WE WANT TO USE
+	; 523 * CPU MHZ FOR INTERNAL LOOP COUNT.
+	LD	DE,556			; LOAD SCALER FOR 1MHZ
 	LD	A,(CB_CPUMHZ)		; LOAD CPU SPEED IN MHZ
 	CALL	MULT8X16		; HL := DE * A
 	LD	(IDE_TOSCALER),HL	; SAVE IT
@@ -359,7 +369,7 @@ IDE_INIT2A:
 	LD	DE,IDE_STR_NOHW		; NOT PRESENT MESSAGE
 	CALL	WRITESTR		; DISPLAY IT
 	JR	IDE_INIT4		; SKIP CFG ENTRY
-;	
+;
 IDE_INIT3:
 	CALL	IDE_RESET		; RESET THE BUS
 	CALL	IDE_INIT5		; DETECT/INIT MASTER
@@ -367,7 +377,7 @@ IDE_INIT3:
 	CALL	IDE_GOPARTNER		; SWITCH IY TO PARTNER CFG
 	CALL	IDE_INIT5		; DETECT/INIT SLAVE
 	POP	IY			; RESTORE CFG PTR
-;	
+;
 IDE_INIT4:
 	LD	DE,IDE_CFGSIZ		; SIZE OF CFG TABLE ENTRY
 	ADD	IY,DE			; BUMP POINTER
@@ -385,13 +395,28 @@ IDE_INIT5:
 	PUSH	IY			; CFG ENTRY POINTER
 	POP	DE			; COPY TO DE
 	CALL	DIO_ADDENT		; ADD ENTRY TO GLOBAL DISK DEV TABLE
+;
+	; START PRINTING DEVICE INFO
+	CALL	IDE_PRTPREFIX		; PRINT DEVICE PREFIX
+	LD	A,(IY+IDE_TYPE)
+	LD	DE,IDE_STR_TYPEATA
+	CP	IDE_TYPEATA
+	CALL	Z,WRITESTR
+	LD	DE,IDE_STR_TYPEATAPI
+	CP	IDE_TYPEATAPI
+	CALL	Z,WRITESTR
 ;
 	; CHECK FOR BAD STATUS
 	LD	A,(IY+IDE_STAT)		; GET STATUS
 	OR	A			; SET FLAGS
-	JP	NZ,IDE_PRTSTAT		; EXIT VIA PRINT STATUS
+	JP	Z,IDE_INIT6
+	CALL	PC_SPACE
+	JP	NZ,IDE_PRTSTATSTR	; EXIT VIA PRINT STATUS STRING
 ;
-	CALL	IDE_PRTPREFIX		; PRINT DEVICE PREFIX
+IDE_INIT6:
+	LD	A,(IY+IDE_TYPE)		; GET DEVICE TYPE
+	CP	IDE_TYPEATA		; ATA?
+	RET	NZ			; IF NOT, THEN DONE
 ;
 	LD	DE,IDE_STR_8BIT
 	BIT	1,(IY+IDE_ACC)		; 8 BIT ACCESS?
@@ -555,26 +580,12 @@ IDE_DEVICE1:
 IDE_MEDIA:
 	LD	A,E			; GET FLAGS
 	OR	A			; SET FLAGS
-	JR	Z,IDE_MEDIA2		; JUST REPORT CURRENT STATUS AND MEDIA
+	JR	Z,IDE_MEDIA1		; JUST REPORT CURRENT STATUS AND MEDIA
 ;
-	; GET CURRENT STATUS
-	LD	A,(IY+IDE_STAT)		; GET STATUS
-	OR	A			; SET FLAGS
-	JR	NZ,IDE_MEDIA1		; ERROR ACTIVE, GO RIGHT TO RESET
-;
-	; USE IDENTIFY COMMAND TO CHECK DEVICE
-	LD	HL,IDE_TIMEOUT		; POINT TO TIMEOUT
-	LD	(HL),IDE_TOFAST		; USE FAST TIMEOUT DURING IDENTIFY COMMAND
-	CALL	IDE_SELUNIT		; HARDWARE SELECTION OF TARGET UNIT
-	CALL	IDE_IDENTIFY		; EXECUTE IDENTIFY COMMAND
-	LD	HL,IDE_TIMEOUT		; POINT TO TIMEOUT
-	LD	(HL),IDE_TONORM		; BACK TO NORMAL TIMEOUT
-	JR	Z,IDE_MEDIA2		; IF SUCCESS, BYPASS RESET
+	;CALL	IDE_RESET		; RESET IDE INTERFACE
+	CALL	IDE_INITUNIT		; RE-INITIALIZE UNIT
 ;
 IDE_MEDIA1:
-	CALL	IDE_RESET		; RESET IDE INTERFACE
-;
-IDE_MEDIA2:
 	LD	A,(IY+IDE_STAT)		; GET STATUS
 	OR	A			; SET FLAGS
 	LD	D,0			; NO MEDIA CHANGE DETECTED
@@ -655,6 +666,32 @@ IDE_SETFEAT:
 ;
 ;
 ;
+IDE_NOP:
+#IF (IDETRACE >= 3)
+	CALL	IDE_PRTPREFIX
+	PRTS(" NOP$")
+#ENDIF
+	LD	A,(IDE_DRVHD)
+	;OUT	(IDE_IO_DRVHD),A
+	CALL	IDE_OUT
+	.DB	IDE_REG_DRVHD
+#IF (IDETRACE >= 3)
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+;
+	; EXECUTE THE NOP COMMAND, BUT DON'T WAIT FOR DRDY, JUST
+	; MAKE SURE BUSY IS CLEAR.  THIS COMMAND IS USED DURING
+	; DEVICE DETECTION/INITIALIZATION AND ATAPI DEVICES WILL
+	; NOT ASSERT DRDY AFTER RESET.
+	LD	A,IDE_CIDE_NOP		; CMD = NOP
+	LD	(IDE_CMD),A		; SAVE IT
+	CALL	IDE_WAITBSY
+	RET	NZ
+	JP	IDE_RUNCMD1		; RUN COMMAND AND EXIT
+;
+;
+;
 IDE_IDENTIFY:
 #IF (IDETRACE >= 3)
 	CALL	IDE_PRTPREFIX
@@ -672,6 +709,40 @@ IDE_IDENTIFY:
 	LD	(IDE_CMD),A
 	CALL	IDE_RUNCMD
 	RET	NZ
+
+	CALL	IDE_IN
+	.DB	IDE_REG_STAT
+	BIT	3,A			; IS DRQ SET?
+	JP	Z,IDE_NOMEDIA
+;
+	LD	HL,HB_WRKBUF
+	JP	IDE_GETBUF		; EXIT THRU BUFRD
+;
+;
+;
+IDE_IDENTIFYPACKET:
+#IF (IDETRACE >= 3)
+	CALL	IDE_PRTPREFIX
+	PRTS(" IDPKTDEV$")
+#ENDIF
+	LD	A,(IDE_DRVHD)
+	;OUT	(IDE_IO_DRVHD),A
+	CALL	IDE_OUT
+	.DB	IDE_REG_DRVHD
+#IF (IDETRACE >= 3)
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+	LD	A,IDE_CIDE_IDPKTDEV
+	LD	(IDE_CMD),A
+	CALL	IDE_RUNCMD
+	RET	NZ
+;
+	CALL	IDE_IN
+	.DB	IDE_REG_STAT
+	BIT	3,A			; IS DRQ SET?
+	JP	Z,IDE_NOMEDIA
+;
 	LD	HL,HB_WRKBUF
 	JP	IDE_GETBUF		; EXIT THRU BUFRD
 ;
@@ -766,10 +837,6 @@ IDE_SETADDR:
 #ENDIF
 	CALL	IDE_OUT
 	.DB	IDE_REG_COUNT
-;;;
-;;#IF (DSKYENABLE)
-;;	CALL	IDE_DSKY
-;;#ENDIF
 ;
 	RET
 ;
@@ -781,6 +848,7 @@ IDE_RUNCMD:
 	CALL	IDE_WAITRDY		; WAIT FOR DRIVE READY
 	RET	NZ			; BAIL OUT ON TIMEOUT
 ;
+IDE_RUNCMD1:
 	LD	A,(IDE_CMD)		; GET THE COMMAND
 #IF (IDETRACE >= 3)
 	CALL	PC_SPACE
@@ -937,47 +1005,14 @@ IDE_RESET:
 	PRTS(" RESET$")
 #ENDIF
 ;
-;#IF (IDEMODE == IDEMODE_RC)
+; HARD RESET
 ;
-	; OLDER CF CARDS DO NOT SEEM TO SET THE 
-	; REGISTERS ON RESET, SO HERE WE FAKE THINGS BY
-	; SETTING THEM AS A RESET WOULD.  SO WE ALWAYS
-	; DO THE FAKE.
-	;LD	A,(IY+IDE_MODE)		; GET MODE
-	;CP	IDEMODE_RC		; RCBUS?
-	;JR	NZ,IDE_RESET2		; IF NOT, BYPASS
-;
-	; RCBUS CANNOT ADDRESS THE DEVICE CONTROL PORT AND
-	; HAS NO WAY TO PERFORM A HARD RESET FROM SOFTWARE,
-	; SO FAKE IT BY SETTING THE REGISTERS TO THE SAME
-	; VALUES THAT A RESET WOULD CAUSE.
-#IF (IDETRACE >= 3)
-	PRTS(" FAKE$")
-#ENDIF
-	XOR	A
-	;OUT	(IDE_IO_CYLLO),A
-	CALL	IDE_OUT
-	.DB	IDE_REG_CYLLO
-	;OUT	(IDE_IO_CYLHI),A
-	CALL	IDE_OUT
-	.DB	IDE_REG_CYLHI
-	INC	A
-	;OUT	(IDE_IO_COUNT),A
-	CALL	IDE_OUT
-	.DB	IDE_REG_COUNT
-	;OUT	(IDE_IO_SECT),A
-	CALL	IDE_OUT
-	.DB	IDE_REG_SECT
-;
-IDE_RESET2:
-;
-;#ENDIF
-;
-;#IF (IDEMODE == IDEMODE_MK4)
+; RESET LINE IS NORMALLY PULSED AT POWER ON.  HOWEVER, THIS IS NOT
+; DONE FOR MK4 BUILT-IN IDE PORT, SO WE DO IT NOW.
 ;
 	LD	A,(IY+IDE_MODE)		; GET MODE
 	CP	IDEMODE_MK4		; MK4?
-	JR	NZ,IDE_RESET1		; IF NOT, BYPASS
+	JR	NZ,IDE_RESET2		; IF NOT, BYPASS
 ;
 	; USE HARDWARE RESET LINE
 #IF (IDETRACE >= 3)
@@ -996,66 +1031,59 @@ IDE_RESET2:
 	LD	DE,20
 	CALL	VDELAY
 ;
-IDE_RESET1:
+; SOME CF CARDS AND CF CARD EMULATORS NEED A LITTLE TIME TO
+; "BOOT" THEIR INTERNAL ELECTRONICS, SO THEY CANNOT ASSERT BUSY
+; IMMEDIATELY.  A SMALL WAIT IS PERFORMED HERE TO GIVE SUCH DEVICES
+; A BETTER CHANCE TO SUCCEED LATER.
 ;
-;#ENDIF
+;;;	CALL	LDELAY			; DELAY FOR SLAVE INIT
+	LD	DE,150000 / 16		; 
+	CALL	VDELAY			; SMALL DELAY
 ;
-;#IF ((IDEMODE != IDEMODE_MK4) & (IDEMODE != IDEMODE_RC))
+	JR	IDE_RESET3		; SKIP SOFT RESET
 ;
+; SOFT RESET
+;
+; RC CANNOT ACCESS DEVICE CONTROL REG, SO SKIP THIS
+;
+IDE_RESET2:
 	LD	A,(IY+IDE_MODE)		; GET MODE
-	CP	IDEMODE_MK4		; MK4?
-	JR	Z,IDE_RESET3		; IF SO, BYPASS
 	CP	IDEMODE_RC		; RCBUS?
-	JR	Z,IDE_RESET3		; IF SO, BYPASS
+	JR	Z,IDE_RESET4		; IF SO, BYPASS
 ;
 	; INITIATE SOFT RESET
 #IF (IDETRACE >= 3)
 	PRTS(" SOFT$")
 #ENDIF
-	LD	A,%00001110		; NO INTERRUPTS, ASSERT RESET BOTH DRIVES
+	LD	A,%00001110		; ASSERT RESET, NO INTERRUPTS
 	;OUT	(IDE_IO_CTRL),A
 	CALL	IDE_OUT
 	.DB	IDE_REG_CTRL
+	LD	DE,20			; DELAY 320US (SPEC IS >= 25US)
+	CALL	VDELAY
 ;
 IDE_RESET3:
 ;
-;#ENDIF
+; CONFIGURE OPERATION AND END SOFT RESET
 ;
-	LD	DE,2			; DELAY 32US (SPEC IS >= 25US)
-	CALL	VDELAY
-;
-;#IF (IDEMODE != IDEMODE_RC)
-;
-	LD	A,(IY+IDE_MODE)		; GET MODE
-	CP	IDEMODE_RC		; RCBUS?
-	JR	Z,IDE_RESET4		; IF SO, BYPASS
-;
-	; CONFIGURE OPERATION AND END SOFT RESET
 #IF (IDETRACE >= 3)
 	PRTS(" CONFIG$")
 #ENDIF
-	LD	A,%00001010		; NO INTERRUPTS, DEASSERT RESET
+	LD	DE,20			; DELAY 320US (SPEC IS >= 25US)
+	CALL	VDELAY
+	LD	A,%00001010		; DEASSERT RESET, NO INTERRUPTS
 	;OUT	(IDE_IO_CTRL),A		; PUSH TO REGISTER
 	CALL	IDE_OUT
 	.DB	IDE_REG_CTRL
 ;
 IDE_RESET4:
-;
-;#ENDIF
-;
-; SPEC ALLOWS UP TO 450MS FOR DEVICES TO ASSERT THEIR PRESENCE
-; VIA -DASP.  I ENCOUNTER PROBLEMS LATER ON IF I DON'T WAIT HERE
-; FOR THAT TO OCCUR.  THUS FAR, IT APPEARS THAT 150MS IS SUFFICIENT
-; FOR ANY DEVICE ENCOUNTERED.  MAY NEED TO EXTEND BACK TO 500MS
-; IF A SLOWER DEVICE IS ENCOUNTERED.
-;
-	;LD	DE,500000/16		; ~500MS
-	LD	DE,150000/16		; ~???MS
-	CALL	VDELAY
+	LD	HL,IDE_TONORM		; NORMAL TIMEOUT NOW
+	LD	(IDE_TIMEOUT),HL	; AND RESTORE IT
 ;
 	; INITIALIZE THE INDIVIDUAL UNITS (MASTER AND SLAVE).
 	; BASED ON TESTING, IT APPEARS THAT THE MASTER UNIT MUST
 	; BE DONE FIRST OR THIS BEHAVES BADLY.
+;
 	PUSH	IY			; SAVE CFG PTR
 	BIT	0,(IY+IDE_ACC)		; MASTER?
 	CALL	Z,IDE_GOPARTNER		; IF NOT, SWITCH TO MASTER
@@ -1073,14 +1101,10 @@ IDE_INITUNIT:
 	CALL	IDE_SELUNIT		; SELECT UNIT
 	RET	NZ			; ABORT IF ERROR
 
-	LD	HL,IDE_TIMEOUT		; POINT TO TIMEOUT
-	LD	(HL),IDE_TONORM		; SET NORMAL TIMEOUT
-
 	CALL	IDE_PROBE		; DO PROBE
 	RET	NZ			; JUST RETURN IF NOTHING THERE
 
-	CALL	IDE_INITDEV		; IF FOUND, ATTEMPT TO INIT DEVICE
-	RET				; DONE
+	JP	IDE_INITDEV		; EXIT VIA INITDEV
 ;
 ; TAKE ANY ACTIONS REQUIRED TO SELECT DESIRED PHYSICAL UNIT
 ; UNIT IS SPECIFIED IN IDE_UNIT
@@ -1095,9 +1119,15 @@ IDE_SELUNIT:
 	BIT	0,(IY+IDE_ACC)		; MASTER?
 	JR	Z,IDE_SELUNIT1		; HANDLE SLAVE
 	LD	A,IDE_DRVMASTER		; MASTER
+#IF (IDETRACE >= 3)
+	PRTS(" MASTER$")
+#ENDIF
 	JR	IDE_SELUNIT2
 IDE_SELUNIT1:
 	LD	A,IDE_DRVSLAVE		; SLAVE
+#IF (IDETRACE >= 3)
+	PRTS(" SLAVE$")
+#ENDIF
 IDE_SELUNIT2:
 	LD	(IDE_DRVHD),A		; SAVE IT
 	XOR	A			; SUCCESS
@@ -1106,10 +1136,25 @@ IDE_SELUNIT2:
 ;
 ;
 IDE_PROBE:
+;
+; PROBE FOR A DRIVE ON THE INTERFACE (EITHER MASTER OR SLAVE).
+; IDEALLY, THIS IS BEING CALLED IMMEDIATELY AFTER A HARD OR SOFT
+; INTERFACE RESET.  HOWEVER, THERE ARE SOME HARDWARE IMPLEMENTATTIONS
+; WHICH ARE NOT CAPABLE OF EITHER A HARD NOR SOFT RESET.  SO THIS
+; CODE SHOULD TRY TO HANDLE THE SCENARIO WHERE NO INTERFACE RESET
+; HAS OCCURRED.
+;
 #IF (IDETRACE >= 3)
 	CALL	IDE_PRTPREFIX
 	PRTS(" PROBE$")			; LABEL FOR IO ADDRESS
 #ENDIF
+;
+#IF (IDETRACE >= 3)
+	CALL	IDE_IN
+	.DB	IDE_REG_STAT
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
 ;
 	; SELECT DEVICE (MASTER/SLAVE)
 	LD	A,(IDE_DRVHD)
@@ -1120,20 +1165,96 @@ IDE_PROBE:
 	CALL	PC_SPACE
 	CALL	PRTHEXBYTE
 #ENDIF
-;
 	CALL	DELAY			; DELAY ~16US
 ;
+; THE RC2014 SD PICO TAKES A FEW SECONDS TO INITIALIZE.  DURING THIS
+; TIME IT APPEARS TO RETURN $00.  BELOW IS A SPECIAL CASE FOR RC2014
+; TO WAIT FOR THIS DEVICE TO INITIALIZE.  WE ONLY DO THIS IF THE
+; MASTER DEVICE IS BEING PROBED.  WHEN THE SLAVE DEVICE IS
+; SELECTED, THE SD PICO WILL ALWAYS RETURN ZERO AND CAUSE AN
+; UNNECESSARY DELAY.
+;
+	LD	A,(IY+IDE_MODE)		; GET MODE BITS
+	CP	IDEMODE_RC		; RCBUS?
+	JR	NZ,IDE_PROBE0		; IF NOT, BYPASS
+;
+	LD	A,(IDE_DRVHD)		; GET CURRENT SETTING
+	BIT	4,A			; TEST SLAVE BIT
+	JR	NZ,IDE_PROBE0		; IF SO, BYPASS
+;
+	CALL	IDE_IN
+	.DB	IDE_REG_STAT
+#IF (IDETRACE >= 3)
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+	OR	A			; SET FLAGS
+	JR	NZ,IDE_PROBE0		; SKIP IF NOT $00
+;
+#IF (IDETRACE >= 3)
+	PRTS(" WAIT$")
+#ENDIF
+	LD	HL,(IDE_TIMEOUT)	; GET CURRENT TIMEOUT
+	PUSH	HL			; SAVE IT
+	LD	HL,IDE_TOPICO		; SLOW TIMEOUT FOR THIS
+	LD	(IDE_TIMEOUT),HL	; SET IT
+	CALL	IDE_WAIT00		; WAIT FOR $00 TO CLEAR
+	POP	HL			; RECOVER TIMEOUT
+	LD	(IDE_TIMEOUT),HL	; SET IT
+;
+; IF WE GET HERE AND THE DRIVE IS STILL INITIALIZING, WE NEED TO
+; WAIT UNTIL THE DRIVE IS READY.  IN THIS CASE BUSY *WILL* BE HIGH.
+; BASED ON TESTING, DRDY AND DSC VALUES VARY.  EVERYTHING ELSE SEEMS
+; TO BE ZERO.  SO, WE FILTER OUT DRDY & DSC, THEN LOOK FOR BUSY=1
+; AND ALL ELSE ZERO.  THIS GENERALLY AVOIDS VALUES THAT ARE TYPICAL
+; FOR FLOATING PORTS AND SO CAN BE USED TO DETERMINE IF WE NEED TO
+; WAIT FOR THE DEVICE TO BE READY.  THIS WAIT IS MANDATORY BECAUSE
+; SOME (IF NOT ALL) DEVICES WILL NOT PERSIST REGISTER VALUES UNTIL
+; THE DRIVE IS READY.
+;
+IDE_PROBE0:
+	CALL	IDE_IN
+	.DB	IDE_REG_STAT
+#IF (IDETRACE >= 3)
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+;
+	AND	%10101111		; FILTER OUT DRDY & DSC
+	CP	$80			; INIT IN PROGRESS?
+	JR	NZ,IDE_PROBE1		; IF NOT, SKIP AHEAD
+;
+#IF (IDETRACE >= 3)
+	PRTS(" WAIT$")
+#ENDIF
+;
+	LD	HL,(IDE_TIMEOUT)	; GET CURRENT TIMEOUT
+	PUSH	HL			; SAVE IT
+	LD	HL,IDE_TOSLOW		; SLOW TIMEOUT FOR THIS
+	LD	(IDE_TIMEOUT),HL	; SET IT
+	CALL	IDE_WAITBSY		; WAIT FOR BUSY TO CLEAR
+	POP	HL			; RECOVER TIMEOUT
+	LD	(IDE_TIMEOUT),HL	; SET IT
+;
+#IF (IDETRACE >= 3)
+	CALL	IDE_IN
+	.DB	IDE_REG_STAT
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+;
 ; TEST FOR PRESENCE OF IDE REGISTERS.  USE LBA0/1 TO SEE
 ; IF VALUE CAN BE PERSISTED.  THE USE OF BOTH LBA0 AND LBA1
-; IS TO MAINTAIN CONSISTENCY WITH TGHE THE PPIDE DRIVER BECAUSE
+; IS TO MAINTAIN CONSISTENCY WITH THE THE PPIDE DRIVER BECAUSE
 ; PPI ITSELF WILL PERSIST THE LAST VALUE WRITTEN, SO WE USE
-; MULTIPLE REGISTERS TO WORK AROUND THIS FALSE POSITIVE.
+; MULTIPLE REGISTERS TO WORK AROUND THIS.
 ;
+IDE_PROBE1:
 	; $AA -> LBA0
 	LD	A,$AA
 	CALL	IDE_OUT
 	.DB	IDE_REG_LBA0
-;	
+;
 	; $55 => LBA1
 	LD	A,$55
 	CALL	IDE_OUT
@@ -1163,42 +1284,34 @@ IDE_PROBE:
 	CALL	IDE_REGDUMP
 #ENDIF
 ;
-	;JR	IDE_PROBE1		; *DEBUG*
-;
-IDE_PROBE0:
-	CALL	IDE_WAITBSY		; WAIT FOR BUSY TO CLEAR
-	JP	NZ,IDE_NOMEDIA		; CONVERT TIMEOUT TO NO MEDIA AND RETURN
-;
-#IF (IDETRACE >= 3)
-	CALL	IDE_REGDUMP
-#ENDIF
-;
-	; CHECK STATUS
-	;IN	A,(IDE_IO_STAT)		; GET STATUS
-	CALL	IDE_IN
-	.DB	IDE_REG_STAT
-#IF (IDETRACE >= 3)
-	CALL	PC_SPACE
-	CALL	PRTHEXBYTE		; IF DEBUG, PRINT STATUS
-#ENDIF
-	OR	A			; SET FLAGS TO TEST FOR ZERO
-	JP	Z,IDE_NOMEDIA
-;
-IDE_PROBE1:
-	; ASSUME ATA DEVICE FOR NOW, RECORD TYPE AND RETURN SUCCESS
-	LD	A,IDE_TYPEATA		; TYPE = ATA
-	LD	(IY+IDE_TYPE),A		; SET IT IN INSTANCE DATA
-	XOR	A			; SIGNAL SUCCESS
-	RET				; DONE, NOTE THAT A=0 AND Z IS SET
+	XOR	A
+	RET
 ;
 ; (RE)INITIALIZE DEVICE
 ;
 IDE_INITDEV:
 ;
-	LD	A,(IY+IDE_TYPE)		; GET THE DEVICE TYPE
-	OR	A			; SET FLAGS
-	JP	Z,IDE_NOMEDIA		; EXIT SETTING NO MEDIA STATUS
+#IF (IDETRACE >= 3)
+	CALL	IDE_PRTPREFIX
+	PRTS(" INITDEV$")		; LABEL FOR IO ADDRESS
+#ENDIF
 ;
+; IF THE IDE STATUS BYTE IS $00, WE HAVE EITHER A NON-PRESENT SLAVE
+; OR AN ATAPI DEVICE.  TO DIFFERENTIATE THESE POSSIBILITIES, WE RUN
+; A NOP COMMAND.  IF WE HAVE AN ATAPI DEVICE, THIS WILL CAUSE THE
+; STATUS BYTE TO BE "NORMAL" (NON-ZERO).  IF THE STATUS IS STILL
+; ZERO, WE ABORT WITH A NO MEDIA STATUS.  NOTE THAT THE NOP COMMAND
+; RETURNS A COMMAND ERROR BY DESIGN.  WE JUST IGNORE THE ERROR.
+;
+	CALL	IDE_NOP
+	CALL	IDE_IN
+	.DB	IDE_REG_STAT
+	OR	A
+	JP	Z,IDE_NOMEDIA
+;
+; WE NEED TO SETUP 8-BIT MODE BEFORE DOING ANYTHING ELSE
+;
+IDE_INITDEV0A:
 	BIT	1,(IY+IDE_ACC)		; 8 BIT ACCESS?
 	JR	Z,IDE_INITDEV0		; NO, DO 16 BIT INIT
 	LD	A,IDE_FEAT_ENABLE8BIT	; FEATURE VALUE = ENABLE 8-BIT PIO
@@ -1216,10 +1329,14 @@ IDE_INITDEV0:
 IDE_INITDEV00:
 ;
 	CALL	IDE_IDENTIFY		; EXECUTE IDENTIFY COMMAND
-	RET	NZ			; BAIL OUT ON ERROR
+	JR	NZ,IDE_INITDEVP		; ON ERROR, TRY PACKET DEVICE
+;
+	; DECLARE WE ARE ATA
+	LD	A,IDE_TYPEATA		; OTHERWISE TYPE=ATA
+	LD	(IY+IDE_TYPE),A		; SET IT IN INSTANCE DATA
 ;
 	LD	DE,HB_WRKBUF		; POINT TO BUFFER
-#IF (IDETRACE >= 3)
+#IF (IDETRACE >= 4)
 	CALL	DUMP_BUFFER		; DUMP IT IF DEBUGGING
 #ENDIF
 ;
@@ -1239,38 +1356,15 @@ IDE_INITDEV00:
 	CALL	PRTHEXWORD
 #ENDIF
 ;
-; SEE PAGE 114 OF CF+ & CF SPECIFICATION REV. 3.0 FOR CF CARD
-; SIGNATURE VALUES.  ALL OF THE BELOW ARE DOCUMENTED THERE EXCEPT
-; $045A WHICH IS A VALUE DISCOVERED ON A CF<->SD CARD ADAPTER.
-;
-; SIGNATURE $045A IS NOT LISTED IN THE CF SPEC.  IT WAS ADDED BECAUSE
-; IT WAS SEEN IN THE WILD ON A CF-SD ADAPTER.  HOWEVER IT HAS NOW
-; ALSO BEEN SEEN ON A SPINNING HARD DISK.  SINCE IT IS AMBIGUOUS, I
-; WILL CONSIDER IT TO BE A HARD DISK.
-;
-	LD	BC,$848A		; STANDARD CF CARD SIGNATURE	%1000 1111 1000 1010
-	CALL	IDE_INITDEV000		; TEST & SET
-	LD	BC,$044A		; ALT SIG FOR CF NON-REMOVABLE	%0000 0100 0100 1010
-	CALL	IDE_INITDEV000		; TEST & SET
-	;LD	BC,$045A		; ?ALT SIG FOR CF NON-REMOVABLE	%0000 0100 0101 1010
-	;CALL	IDE_INITDEV000		; TEST & SET
-	LD	BC,$0040		; ALT SIG FOR CF NON-REMOVABLE	%0000 0000 0100 0000
-	CALL	IDE_INITDEV000		; TEST & SET
-	JR	IDE_INITDEV1		; CONTINUE INIT
-;
-IDE_INITDEV000:
-	; CHECK IF FIRST WORD OF IDENTIFY DATA MATCHES VALUE IN BC
-	; AND SET CF FLAG IF SO
-	LD	HL,(HB_WRKBUF)		; FIRST WORD OF IDENTIFY DATA
-	OR	A			; CLEAR CARRY
-	SBC	HL,BC			; COMPARE
-	RET	NZ			; ABORT IF NOT EQUAL
+	; DETERMINE IF COMPACTFLASH MEDIA
+	LD	A,(HB_WRKBUF+(83*2))	; LOW BYTE OF WORD 83
+	BIT	2,A			; TEST CFA FEATURE SET BIT
+	JR	Z,IDE_INITDEV1		; IF NOT, SKIP
 	SET	0,(IY+IDE_MED)		; ELSE SET FLAGS BIT FOR CF MEDIA
-	RET				; AND RETURN
 ;
 IDE_INITDEV1:
 	; DETERMINE IF LBA CAPABLE
-	LD	A,(HB_WRKBUF+98+1)	; GET BYTE WITH LBA BIT FROM BUFFER
+	LD	A,(HB_WRKBUF+98+1)	; HIGH BYTE OF WORD 49
 	BIT	1,A			; CHECK THE LBA BIT
 	JR	Z,IDE_INITDEV2		; NOT SET, BYPASS
 	SET	1,(IY+IDE_MED)		; SET FLAGS BIT FOR LBA
@@ -1287,12 +1381,39 @@ IDE_INITDEV2:
 	POP	BC			; RECOVER POINTER TO CAPACITY ENTRY
 	CALL	ST32			; SAVE CAPACITY
 ;
-	; RESET CARD STATUS TO 0 (OK)
+	; RECORD STATUS OK
 	XOR	A			; A := 0 (STATUS = OK)
 	LD	(IY+IDE_STAT),A		; SAVE IT
 ;
 	RET				; RETURN, A=0, Z SET
 ;
+;
+;
+IDE_INITDEVP:
+	CALL	IDE_IDENTIFYPACKET	; EXECUTE IDENTIFY COMMAND
+	RET	NZ			; BAIL OUT ON ERROR
+;
+	; DECLARE WE ARE ATAPI
+	LD	A,IDE_TYPEATAPI		; OTHERWISE TYPE=ATAPI
+	LD	(IY+IDE_TYPE),A		; SET IT IN INSTANCE DATA
+;
+	LD	DE,HB_WRKBUF		; POINT TO BUFFER
+#IF (IDETRACE >= 4)
+	CALL	DUMP_BUFFER		; DUMP IT IF DEBUGGING
+#ENDIF
+;
+	LD	(IY+IDE_MED),0		; CLEAR FLAGS
+;
+	; DONE FOR NOW, ATAPI NOT INPLEMENTED
+;
+	; RETURN NOT SUPPORTED STATUS
+	JP	IDE_NOTSUP		; NOT SUPPORTED
+;
+;	; RECORD STATUS OK
+;	XOR	A			; A := 0 (STATUS = OK)
+;	LD	(IY+IDE_STAT),A		; SAVE IT
+;	RET
+;
 ; SWITCH IY POINTER FROM CURRENT UNIT CFG TO PARTNER UNIT CFG
 ;
 IDE_GOPARTNER:
@@ -1338,7 +1459,7 @@ IDE_WAITRDY2:
 ;
 ;
 IDE_WAITDRQ:
-	LD	A,(IDE_TIMEOUT)		; GET TIMEOUT IN 0.05 SECS
+	LD	A,(IDE_TIMEOUT)		; GET TIMEOUT IN 0.1 SECS
 	LD	B,A			; PUT IN OUTER LOOP VAR
 IDE_WAITDRQ1:
 	LD	DE,(IDE_TOSCALER)	; CPU SPPED SCALER TO INNER LOOP VAR
@@ -1360,14 +1481,14 @@ IDE_WAITDRQ2:
 ;
 ;
 IDE_WAITBSY:
-	LD	A,(IDE_TIMEOUT)		; GET TIMEOUT IN 0.05 SECS
+	LD	A,(IDE_TIMEOUT)		; GET TIMEOUT IN 0.1 SECS
 	LD	B,A			; PUT IN OUTER LOOP VAR
 IDE_WAITBSY1:
 	LD	DE,(IDE_TOSCALER)	; CPU SPPED SCALER TO INNER LOOP VAR
 IDE_WAITBSY2:
-	;IN	A,(IDE_IO_STAT)		; WAIT FOR DRIVE'S 512 BYTE READ BUFFER		; 11TS
-	CALL	IDE_IN									; 17TS + ???TS
-	.DB	IDE_REG_STAT								; 0TS
+	;IN	A,(IDE_IO_STAT)		; WAIT FOR DRIVE'S 512 BYTE READ BUFFER
+	CALL	IDE_IN									; 17TS + 121TS
+	.DB	IDE_REG_STAT
 	LD	C,A			; SAVE IT					; 4TS
 	AND	%10000000		; TO FILL (OR READY TO FILL)			; 7TS
 	RET	Z									; 5TS
@@ -1376,25 +1497,45 @@ IDE_WAITBSY2:
 	OR	E									; 4TS
 	JR	NZ,IDE_WAITBSY2								; 12TS
 	DJNZ	IDE_WAITBSY1								; -----
-	JP	IDE_BSYTO		; EXIT WITH BSYTO ERR				; ??TS
+	JP	IDE_BSYTO		; EXIT WITH BSYTO ERR				; 180
+;
+;
+;
+IDE_WAIT00:
+	LD	A,(IDE_TIMEOUT)		; GET TIMEOUT IN 0.1 SECS
+	LD	B,A			; PUT IN OUTER LOOP VAR
+IDE_WAIT001:
+	LD	DE,(IDE_TOSCALER)	; CPU SPPED SCALER TO INNER LOOP VAR
+IDE_WAIT002:
+	;IN	A,(IDE_IO_STAT)		; WAIT FOR DRIVE'S 512 BYTE READ BUFFER
+	CALL	IDE_IN
+	.DB	IDE_REG_STAT
+	OR	A			; SET FLAGS
+	RET	NZ			; DONE IF NOT ZERO
+	DEC	DE
+	LD	A,D
+	OR	E
+	JR	NZ,IDE_WAIT002
+	DJNZ	IDE_WAIT001
+	RET				; DONE
 ;
 ; READ A VALUE FROM THE DEVICE POINTED TO BY IY AND RETURN IT IN A
-; 
-IDE_IN:
-	EX	(SP),HL			; GET PARM POINTER
-	PUSH	BC
-	LD	A,(HL)
-	INC	HL
-	LD	C,(IY+IDE_IOBASE)
-	ADD	A,C
-	LD	C,A
-	IN	A,(C)
-	POP	BC
-	EX	(SP),HL			; RESTORE STACK
-	RET
 ;
-; OUTPUT VALUE IN A TO THE DEVICE POINTED TO BY IY
-; 
+IDE_IN:
+	EX	(SP),HL			; GET PARM POINTER				; 19TS
+	PUSH	BC									; 11TS
+	LD	A,(HL)									; 7TS
+	INC	HL									; 6TS
+	LD	C,(IY+IDE_IOBASE)							; 19TS
+	ADD	A,C									; 4TS
+	LD	C,A									; 4TS
+	IN	A,(C)									; 12TS
+	POP	BC									; 10TS
+	EX	(SP),HL			; RESTORE STACK					; 19TS
+	RET										; 10TS
+;											; ----
+; OUTPUT VALUE IN A TO THE DEVICE POINTED TO BY IY					; 121TS
+;
 IDE_OUT:
 	EX	(SP),HL			; GET PARM POINTER
 	PUSH	BC
@@ -1444,6 +1585,10 @@ IDE_BSYTO:
 	LD	A,IDE_STBSYTO
 	JR	IDE_ERR
 ;
+IDE_NOTSUP:
+	LD	A,IDE_STNOTSUP
+	JR	IDE_ERR
+;
 IDE_ERR:
 	LD	(IY+IDE_STAT),A		; SAVE NEW STATUS
 ;
@@ -1461,39 +1606,15 @@ IDE_PRTERR:
 	RET	Z			; DONE IF NO ERRORS
 	; FALL THRU TO IDE_PRTSTAT
 ;
-; PRINT STATUS STRING (STATUS NUM IN A)
+; PRINT FULL DEVICE STATUS LINE
 ;
 IDE_PRTSTAT:
 	PUSH	AF
 	PUSH	DE
 	PUSH	HL
 	LD	A,(IY+IDE_STAT)
-	OR	A
-	LD	DE,IDE_STR_STOK
-	JR	Z,IDE_PRTSTAT1
-	INC	A
-	LD	DE,IDE_STR_STINVUNIT
+	CP	IDE_STINVUNIT
 	JR	Z,IDE_PRTSTAT2		; INVALID UNIT IS SPECIAL CASE
-	INC	A
-	LD	DE,IDE_STR_STNOMEDIA
-	JR	Z,IDE_PRTSTAT1
-	INC	A
-	LD	DE,IDE_STR_STCMDERR
-	JR	Z,IDE_PRTSTAT1
-	INC	A
-	LD	DE,IDE_STR_STIOERR
-	JR	Z,IDE_PRTSTAT1
-	INC	A
-	LD	DE,IDE_STR_STRDYTO
-	JR	Z,IDE_PRTSTAT1
-	INC	A
-	LD	DE,IDE_STR_STDRQTO
-	JR	Z,IDE_PRTSTAT1
-	INC	A
-	LD	DE,IDE_STR_STBSYTO
-	JR	Z,IDE_PRTSTAT1
-	LD	DE,IDE_STR_STUNK
-IDE_PRTSTAT1:
 	CALL	IDE_PRTPREFIX		; PRINT UNIT PREFIX
 	JR	IDE_PRTSTAT3
 IDE_PRTSTAT2:
@@ -1501,12 +1622,52 @@ IDE_PRTSTAT2:
 	PRTS("IDE:$")			; NO UNIT NUM IN PREFIX FOR INVALID UNIT
 IDE_PRTSTAT3:
 	CALL	PC_SPACE		; FORMATTING
-	CALL	WRITESTR
+	CALL	IDE_PRTSTATSTR
 	POP	HL
 	POP	DE
 	POP	AF
 	RET
 ;
+; PRINT STATUS STRING
+;
+IDE_PRTSTATSTR:
+	PUSH	AF
+	PUSH	DE
+	LD	A,(IY+IDE_STAT)
+	OR	A
+	LD	DE,IDE_STR_STOK
+	JR	Z,IDE_PRTSTATSTR1
+	INC	A
+	LD	DE,IDE_STR_STINVUNIT
+	JR	Z,IDE_PRTSTATSTR1
+	INC	A
+	LD	DE,IDE_STR_STNOMEDIA
+	JR	Z,IDE_PRTSTATSTR1
+	INC	A
+	LD	DE,IDE_STR_STCMDERR
+	JR	Z,IDE_PRTSTATSTR1
+	INC	A
+	LD	DE,IDE_STR_STIOERR
+	JR	Z,IDE_PRTSTATSTR1
+	INC	A
+	LD	DE,IDE_STR_STRDYTO
+	JR	Z,IDE_PRTSTATSTR1
+	INC	A
+	LD	DE,IDE_STR_STDRQTO
+	JR	Z,IDE_PRTSTATSTR1
+	INC	A
+	LD	DE,IDE_STR_STBSYTO
+	JR	Z,IDE_PRTSTATSTR1
+	INC	A
+	LD	DE,IDE_STR_STNOTSUP
+	JR	Z,IDE_PRTSTATSTR1
+	LD	DE,IDE_STR_STUNK
+IDE_PRTSTATSTR1:
+	CALL	WRITESTR
+	POP	DE
+	POP	AF
+	RET
+;
 ; PRINT ALL REGISTERS DIRECTLY FROM DEVICE
 ; DEVICE MUST BE SELECTED PRIOR TO CALL
 ;
@@ -1546,30 +1707,6 @@ IDE_PRTPREFIX1:
 	CALL	PC_COLON
 	POP	AF
 	RET
-;;;
-;;;
-;;;
-;;#IF (DSKYENABLE)
-;;IDE_DSKY:
-;;	LD	HL,DSKY_HEXBUF		; POINT TO DSKY BUFFER
-;;	CALL	IDE_IN
-;;	.DB	IDE_REG_DRVHD
-;;	LD	(HL),A			; SAVE IN BUFFER
-;;	INC	HL			; INCREMENT BUFFER POINTER
-;;	CALL	IDE_IN
-;;	.DB	IDE_REG_CYLHI
-;;	LD	(HL),A			; SAVE IN BUFFER
-;;	INC	HL			; INCREMENT BUFFER POINTER
-;;	CALL	IDE_IN
-;;	.DB	IDE_REG_CYLLO
-;;	LD	(HL),A			; SAVE IN BUFFER
-;;	INC	HL			; INCREMENT BUFFER POINTER
-;;	CALL	IDE_IN
-;;	.DB	IDE_REG_SECT
-;;	LD	(HL),A			; SAVE IN BUFFER
-;;	CALL	DSKY_HEXOUT		; SEND IT TO DSKY
-;;	RET
-;;#ENDIF
 ;
 ;=============================================================================
 ; STRING DATA
@@ -1583,6 +1720,7 @@ IDE_STR_STIOERR		.TEXT	"IO ERROR$"
 IDE_STR_STRDYTO		.TEXT	"READY TIMEOUT$"
 IDE_STR_STDRQTO		.TEXT	"DRQ TIMEOUT$"
 IDE_STR_STBSYTO		.TEXT	"BUSY TIMEOUT$"
+IDE_STR_STNOTSUP	.TEXT	"NOT SUPPORTED$"
 IDE_STR_STUNK		.TEXT	"UNKNOWN ERROR$"
 ;
 IDE_STR_NO		.TEXT	"NO$"
@@ -1594,12 +1732,15 @@ IDE_STR_MODE_DIDE	.TEXT	"DIDE$"
 IDE_STR_MODE_MK4	.TEXT	"MK4$"
 IDE_STR_MODE_RC		.TEXT	"RC$"
 ;
+IDE_STR_TYPEATA		.TEXT	" ATA$"
+IDE_STR_TYPEATAPI	.TEXT	" ATAPI$"
+;
 ;=============================================================================
 ; DATA STORAGE
 ;=============================================================================
 ;
 IDE_TIMEOUT	.DB	IDE_TONORM	; WAIT FUNCS TIMEOUT IN TENTHS OF SEC
-IDE_TOSCALER	.DW	CPUMHZ * 961	; WAIT FUNCS SCALER FOR CPU SPEED
+IDE_TOSCALER	.DW	CPUMHZ * 556	; WAIT FUNCS SCALER FOR CPU SPEED
 ;
 IDE_CMD		.DB	0		; PENDING COMMAND TO PROCESS
 IDE_IOFNADR	.DW	0		; PENDING IO FUNCTION ADDRESS

Source/HBIOS/kbd.asm

@@ -14,9 +14,10 @@
 ;
 ; DRIVER DATA OFFSETS (FROM IY)
 ;
-KBD_ST		.EQU	0	; BYTE, STATUS PORT NUM (R)
+KBD_MODE	.EQU	0	; BYTE, KEYBOARD MODE (STD OR VRC)
+KBD_ST		.EQU	1	; BYTE, STATUS PORT NUM (R)
 KBD_CMD		.EQU	KBD_ST	; BYTE, CMD PORT NUM (W)
-KBD_DAT		.EQU	1	; BYTE, DATA PORT NUM (R/W)
+KBD_DAT		.EQU	2	; BYTE, DATA PORT NUM (R/W)
 ;
 ; TIMING CONSTANTS
 ;
@@ -69,17 +70,33 @@ KBD_INIT:
 	LD	(KBD_REPEAT),A		; SAVE IT
 	LD	A,KBD_DEFSTATE		; GET DEFAULT STATE
 	LD	(KBD_STATE),A		; SAVE IT
-
+;
+	LD	A,(IY+KBD_MODE)		; GET KBD MODE BYTE
+	CP	KBDMODE_VRC		; VRC?
+	JR	Z,KBD_INIT1		; IF SO, MUST ASSUME PRESENT
+;
 	LD	A,$AA			; CONTROLLER SELF TEST
 	CALL	KBD_PUTCMD		; SEND IT
 	CALL	KBD_GETDATA		; CONTROLLER SHOULD RESPOND WITH $55 (ACK)
-
+;
 	CP	$55			; IS IT THERE?
 	JR	Z,KBD_INIT1		; IF SO, CONTINUE
 	PRTS(" NOT PRESENT$")		; DIAGNOSE PROBLEM
 	RET				; BAIL OUT
-
+;
 KBD_INIT1:
+	PRTS(" MODE=$")			; TAG
+	LD	A,(IY+KBD_MODE)		; GET MODE VALUE
+	LD	DE,KBD_STR_MODEPS2
+	CP	KBDMODE_PS2
+	JR	Z,KBD_INIT2
+	LD	DE,KBD_STR_MODEVRC
+	CP	KBDMODE_VRC
+	JR	Z,KBD_INIT2
+	LD	DE,KBD_STR_MODEUNK
+KBD_INIT2:
+	CALL	WRITESTR
+;
 	LD	A,$60			; SET COMMAND REGISTER
 	CALL	KBD_PUTCMD		; SEND IT
 ;	LD	A,$60			; XLAT ENABLED, MOUSE DISABLED, NO INTS
@@ -88,11 +105,6 @@ KBD_INIT1:
 	
 	CALL	KBD_GETDATA		; GOBBLE UP $AA FROM POWER UP, AS NEEDED
 	
-;	LD	A,$AE			; COMMAND = ENABLE KEYBOARD
-;	CALL	KBD_PUTCMD		; SEND IT
-;	LD	A,$A7			; COMMAND = DISABLE MOUSE
-;	CALL	KBD_PUTCMD		; SEND IT
-	
 	CALL 	KBD_RESET		; RESET THE KEYBOARD
 	CALL	KBD_SETLEDS		; UPDATE LEDS BASED ON CURRENT TOGGLE STATE BITS
 	CALL	KBD_SETRPT		; UPDATE REPEAT RATE BASED ON CURRENT SETTING
@@ -177,6 +189,9 @@ KBD_PUTCMD:
 ; PUT A CMD BYTE FROM A TO THE KEYBOARD INTERFACE WITH TIMEOUT
 ;
 	LD	E,A			; SAVE INCOMING VALUE IN E
+	LD	A,(IY+KBD_MODE)		; GET MODE BYTE
+	CP	KBDMODE_VRC		; VGARC KEYBOARD?
+	JR	Z,KBD_PUTCMD2		; BAIL OUT
 	LD	B,KBD_WAITTO		; SETUP TO LOOP
 KBD_PUTCMD0:
 	CALL	KBD_OST			; GET OUTPUT REGISTER STATUS
@@ -194,6 +209,7 @@ KBD_PUTCMD1:
 #ENDIF
 	LD	C,(IY+KBD_CMD)		; COMMAND PORT
 	OUT	(C),A			; WRITE IT
+KBD_PUTCMD2:
 	XOR	A			; SIGNAL SUCCESS
 	RET
 ;
@@ -203,6 +219,9 @@ KBD_PUTDATA:
 ; PUT A DATA BYTE FROM A TO THE KEYBOARD INTERFACE WITH TIMEOUT
 ;
 	LD	E,A			; SAVE INCOMING VALUE IN E
+	LD	A,(IY+KBD_MODE)		; GET MODE BYTE
+	CP	KBDMODE_VRC		; VGARC KEYBOARD?
+	JR	Z,KBD_PUTDATA2		; BAIL OUT
 	LD	B,KBD_WAITTO		; SETUP TO LOOP
 KBD_PUTDATA0:
 	CALL	KBD_OST			; GET OUTPUT REGISTER STATUS
@@ -219,6 +238,7 @@ KBD_PUTDATA1:
 #ENDIF
 	LD	C,(IY+KBD_DAT)		; DATA PORT
 	OUT	(C),A			; WRITE IT
+KBD_PUTDATA2:
 	XOR	A			; SIGNAL SUCCESS
 	RET
 ;
@@ -681,11 +701,21 @@ KBD_DECNEW:	; START NEW KEYPRESS (CLEAR ALL STATUS BITS)
 	LD	(KBD_STATUS),A		; CLEAR STATUS
 	JP	KBD_DEC1		; RESTART THE ENGINE
 ;
+; DRIVER DATA
+;
+KBD_STR_MODEPS2		.TEXT	"PS2$"
+KBD_STR_MODEVRC		.TEXT	"VRC$"
+KBD_STR_MODEUNK		.TEXT	"???$"
+;
+;
+;
 #IF (KBDKBLOUT == KBD_US)
+;
 ;__________________________________________________________________________________________________
 ;
 ; MAPPING TABLES US/ENGLISH
 ;__________________________________________________________________________________________________
+;
 KBD_MAPSTD:	; SCANCODE IS INDEX INTO TABLE TO RESULTANT LOOKUP KEYCODE
 	.DB	$FF,$E8,$FF,$E4,$E2,$E0,$E1,$EB,$FF,$E9,$E7,$E5,$E3,$09,'`',$FF
 	.DB	$FF,$B4,$B0,$FF,$B2,'q','1',$FF,$FF,$FF,'z','s','a','w','2',$FF
@@ -722,7 +752,9 @@ KBD_MAPNUMPAD:	; KEYCODE TRANSLATION FROM NUMPAD RANGE TO STD ASCII/KEYCODES
 	.DB	$F3,$F7,$F5,$F8,$FF,$F9,$F2,$F6,$F4,$F0,$F1,$2F,$2A,$2D,$2B,$0D
 	.DB	$31,$32,$33,$34,$35,$36,$37,$38,$39,$30,$2E,$2F,$2A,$2D,$2B,$0D
 #ENDIF
+;
 #IF (KBDKBLOUT == KBD_DE)
+;
 ;__________________________________________________________________________________________________
 ;
 ; MAPPING TABLES GERMAN

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/ppa.asm

@@ -0,0 +1,861 @@
+;
+;=============================================================================
+;   PPA DISK DRIVER
+;=============================================================================
+;
+; PARALLEL PORT INTERFACE FOR SCSI DISK DEVICES USING A PARALLEL PORT
+; ADAPTER.  PRIMARILY TARGETS PARALLEL PORT IOMEGA ZIP DRIVES.
+;
+; INTENDED TO CO-EXIST WITH LPT DRIVER.
+;
+; CREATED BY WAYNE WARTHEN FOR ROMWBW HBIOS.
+; MUCH OF THE CODE IS DERIVED FROM FUZIX (ALAN COX).
+;
+; 5/23/2023 WBW - INITIAL RELEASE
+; 5/26/3023 WBW - CLEAN UP, LED ACTIVITY
+; 5/27/2023 WBW - ADDED SPP MODE
+;
+;=============================================================================
+;
+;  IBM PC STANDARD PARALLEL PORT (SPP):
+;  - NHYODYNE PRINT 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
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;     | /BUSY | /ACK  | POUT  | SEL   | /ERR  | 0     | 0     | 0     |
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;
+;  PORT 2 (OUTPUT):
+;
+;	D7	D6	D5	D4	D3	D2	D1	D0
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;     | STAT1 | STAT0 | ENBL  | PINT  | SEL   | RES   | LF    | STB   |
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;
+;=============================================================================
+;
+;  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  |
+;     +-------+-------+-------+-------+-------+-------+-------+-------+
+;
+;=============================================================================
+;
+; TODO:
+;
+; - OPTIMIZE READ/WRITE LOOPS
+;
+; NOTES:
+;
+; - THIS DRIVER IS FOR THE ZIP DRIVE PPA INTERFACE.  IT WILL SIMPLY
+;   FAIL TO EVEN RECOGNIZE A ZIP DRIVE WITH THE OLDER PPA INTERFACE.
+;   THERE DOES NOT SEEM TO BE A WAY TO VISUALLY DETERMINE IF A ZIP
+;   DRIVE IS PPA OR PPA.  SIGH.
+;
+; - THERE ARE SOME HARD CODED TIMEOUT LOOPS IN THE CODE.  THEY ARE
+;   WORKING OK ON A 7 MHZ Z80.  THEY ARE LIKELY TO NEED TWEAKING ON
+;   FASTER CPUS.
+;
+; - THIS DRIVER OPERATES PURELY IN NIBBLE MODE.  I SUSPECT IT IS
+;   POSSIBLE TO USE FULL BYTE MODE (PS2 STYLE), BUT I HAVE NOT
+;   ATTEMPTED IT.
+;
+; - RELATIVE TO ABOVE, THIS BEAST IS SLOW.  IN ADDITION TO THE
+;   NIBBLE MODE READS, THE MG014 ASSIGNS SIGNALS DIFFERENTLY THAN
+;   THE STANDARD IBM PARALLEL PORT WHICH NECESSITATES A BUNCH OF EXTRA
+;   BIT FIDDLING ON EVERY READ.
+;
+; - SOME OF THE DATA TRANSFERS HAVE NO BUFFER OVERRUN CHECKS.  IT IS
+;   ASSUMED SCSI DEVICES WILL SEND/REQUEST THE EXPECTED NUMBER OF BYTES.
+;
+; PPA PORT OFFSETS
+;
+PPA_IODATA	.EQU	0		; PORT A, DATA, OUT
+PPA_IOSTAT	.EQU	1		; PORT B, STATUS, IN
+PPA_IOCTRL	.EQU	2		; PORT C, CTRL, OUT
+PPA_IOSETUP	.EQU	3		; PPI SETUP
+;
+; SCSI UNIT IDS
+;
+PPA_SELF	.EQU	7
+PPA_TGT		.EQU	6
+;
+; PPA DEVICE STATUS
+;
+PPA_STOK	.EQU	0
+PPA_STNOMEDIA	.EQU	-1
+PPA_STCMDERR	.EQU	-2
+PPA_STIOERR	.EQU	-3
+PPA_STTO	.EQU	-4
+PPA_STNOTSUP	.EQU	-5
+;
+; PPA DEVICE CONFIGURATION
+;
+PPA_CFGSIZ	.EQU	12		; SIZE OF CFG TBL ENTRIES
+;
+; PER DEVICE DATA OFFSETS IN CONFIG TABLE ENTRIES
+;
+PPA_DEV		.EQU	0		; OFFSET OF DEVICE NUMBER (BYTE)
+PPA_MODE	.EQU	1		; OPERATION MODE: PPA MODE (BYTE)
+PPA_STAT	.EQU	2		; LAST STATUS (BYTE)
+PPA_IOBASE	.EQU	3		; IO BASE ADDRESS (BYTE)
+PPA_MEDCAP	.EQU	4		; MEDIA CAPACITY (DWORD)
+PPA_LBA		.EQU	8		; OFFSET OF LBA (DWORD)
+;
+;=============================================================================
+; INITIALIZATION ENTRY POINT
+;=============================================================================
+;
+PPA_INIT:
+	LD	IY,PPA_CFG		; POINT TO START OF CONFIG TABLE
+;
+PPA_INIT1:
+	LD	A,(IY)			; LOAD FIRST BYTE TO CHECK FOR END
+	CP	$FF			; CHECK FOR END OF TABLE VALUE
+	JR	NZ,PPA_INIT2		; IF NOT END OF TABLE, CONTINUE
+	XOR	A			; SIGNAL SUCCESS
+	RET				; AND RETURN
+;
+PPA_INIT2:
+	CALL	NEWLINE			; FORMATTING
+	PRTS("PPA:$")			; DRIVER LABEL
+;
+	PRTS(" IO=0x$")			; LABEL FOR IO ADDRESS
+	LD	A,(IY+PPA_IOBASE)	; GET IO BASE ADDRES
+	CALL	PRTHEXBYTE		; DISPLAY IT
+;
+	PRTS(" MODE=$")			; LABEL FOR MODE
+	LD	A,(IY+PPA_MODE)		; GET MODE BITS
+
+	LD	HL,PPA_STR_MODE_MAP
+	ADD	A,A
+	CALL	ADDHLA
+	LD	E,(HL)
+	INC	HL
+	LD	D,(HL)
+	CALL	WRITESTR
+;
+	; CHECK FOR HARDWARE PRESENCE
+	CALL	PPA_DETECT		; PROBE FOR INTERFACE
+	JR	Z,PPA_INIT4		; IF FOUND, CONTINUE
+	CALL	PC_SPACE		; FORMATTING
+	LD	DE,PPA_STR_NOHW		; NO PPA MESSAGE
+	CALL	WRITESTR		; DISPLAY IT
+	JR	PPA_INIT6		; SKIP CFG ENTRY
+;
+PPA_INIT4:
+	; UPDATE DRIVER RELATIVE UNIT NUMBER IN CONFIG TABLE
+	LD	A,(PPA_DEVNUM)		; GET NEXT UNIT NUM TO ASSIGN
+	LD	(IY+PPA_DEV),A		; UPDATE IT
+	INC	A			; BUMP TO NEXT UNIT NUM TO ASSIGN
+	LD	(PPA_DEVNUM),A		; SAVE IT
+;
+	; ADD UNIT TO GLOBAL DISK UNIT TABLE
+	LD	BC,PPA_FNTBL		; BC := FUNC TABLE ADR
+	PUSH	IY			; CFG ENTRY POINTER
+	POP	DE			; COPY TO DE
+	CALL	DIO_ADDENT		; ADD ENTRY TO GLOBAL DISK DEV TABLE
+;
+	CALL	PPA_RESET		; RESET/INIT THE INTERFACE
+#IF (PPATRACE == 0)
+	CALL	PPA_PRTSTAT
+#ENDIF
+	JR	NZ,PPA_INIT6
+;
+	; START PRINTING DEVICE INFO
+	CALL	PPA_PRTPREFIX		; PRINT DEVICE PREFIX
+;
+PPA_INIT5:
+	; PRINT STORAGE CAPACITY (BLOCK COUNT)
+	PRTS(" BLOCKS=0x$")		; PRINT FIELD LABEL
+	LD	A,PPA_MEDCAP		; OFFSET TO CAPACITY FIELD
+	CALL	LDHLIYA			; HL := IY + A, REG A TRASHED
+	CALL	LD32			; GET THE CAPACITY VALUE
+	CALL	PRTHEX32		; PRINT HEX VALUE
+;
+	; PRINT STORAGE SIZE IN MB
+	PRTS(" SIZE=$")			; PRINT FIELD LABEL
+	LD	B,11			; 11 BIT SHIFT TO CONVERT BLOCKS --> MB
+	CALL	SRL32			; RIGHT SHIFT
+	CALL	PRTDEC32		; PRINT DWORD IN DECIMAL
+	PRTS("MB$")			; PRINT SUFFIX
+;
+PPA_INIT6:
+	LD	DE,PPA_CFGSIZ		; SIZE OF CFG TABLE ENTRY
+	ADD	IY,DE			; BUMP POINTER
+	JP	PPA_INIT1		; AND LOOP
+;
+;----------------------------------------------------------------------
+; PROBE FOR PPA HARDWARE
+;----------------------------------------------------------------------
+;
+; ON RETURN, ZF SET INDICATES HARDWARE FOUND
+;
+PPA_DETECT:
+	; INITIALIZE 8255
+	LD	A,(IY+PPA_IOBASE)	; BASE PORT
+	ADD	A,PPA_IOSETUP		; BUMP TO SETUP PORT
+	LD	C,A			; MOVE TO C FOR I/O
+	LD	A,$82			; CONFIG A OUT, B IN, C OUT
+	OUT	(C),A			; DO IT
+	CALL	DELAY			; BRIEF DELAY FOR GOOD MEASURE
+;
+	LD	A,$AA \ CALL	PPA_WRITEDATA
+	CALL	PPA_DISCONNECT
+	CALL	PPA_CONNECT
+	LD	A,$06 \ CALL	PPA_WRITECTRL
+	CALL	PPA_READSTATUS
+;
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+;
+	AND	$F0
+	CP	$F0
+	JR	NZ,PPA_DETECT_FAIL
+	LD	A,$04 \ CALL	PPA_WRITECTRL
+	CALL	PPA_READSTATUS
+;
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+;
+	AND	$F0
+	CP	$80
+	JR	NZ,PPA_DETECT_FAIL
+	LD	A,$AA \ CALL	PPA_WRITEDATA
+	LD	A,$0C \ CALL	PPA_WRITECTRL
+	CALL	PPA_CONNECT
+	LD	A,$40 \ CALL	PPA_WRITEDATA
+	LD	A,$08 \ CALL	PPA_WRITECTRL
+	LD	A,$0C \ CALL	PPA_WRITECTRL
+	CALL	PPA_DISCONNECT
+;
+	XOR	A			; SIGNAL SUCCESS
+	RET				; AND RETURN
+;
+PPA_DETECT_FAIL:
+	OR	$FF			; SIGNAL FAILURE
+	RET	NZ
+
+;
+;=============================================================================
+; DRIVER FUNCTION TABLE
+;=============================================================================
+;
+PPA_FNTBL:
+	.DW	PPA_STATUS
+	.DW	PPA_RESET
+	.DW	PPA_SEEK
+	.DW	PPA_READ
+	.DW	PPA_WRITE
+	.DW	PPA_VERIFY
+	.DW	PPA_FORMAT
+	.DW	PPA_DEVICE
+	.DW	PPA_MEDIA
+	.DW	PPA_DEFMED
+	.DW	PPA_CAP
+	.DW	PPA_GEOM
+#IF (($ - PPA_FNTBL) != (DIO_FNCNT * 2))
+	.ECHO	"*** INVALID PPA FUNCTION TABLE ***\n"
+#ENDIF
+;
+PPA_VERIFY:
+PPA_FORMAT:
+PPA_DEFMED:
+	SYSCHKERR(ERR_NOTIMPL)		; NOT IMPLEMENTED
+	RET
+;
+;
+;
+PPA_READ:
+	CALL	HB_DSKREAD		; HOOK DISK READ CONTROLLER
+	LD	A,SCSI_CMD_READ		; SETUP SCSI READ
+	LD	(PPA_CMD_RW),A		; AND SAVE IT IN SCSI CMD
+	JP	PPA_IO			; DO THE I/O
+;
+;
+;
+PPA_WRITE:
+	CALL	HB_DSKREAD		; HOOK DISK WRITE CONTROLLER
+	LD	A,SCSI_CMD_WRITE	; SETUP SCSI WRITE
+	LD	(PPA_CMD_RW),A		; AND SAVE IT IN SCSI CMD
+	JP	PPA_IO			; DO THE I/O
+;
+;
+;
+PPA_IO:
+	LD	(PPA_DSKBUF),HL		; SAVE DISK BUFFER ADDRESS
+	CALL	PPA_CHKERR		; CHECK FOR ERR STATUS AND RESET IF SO
+	JR	NZ,PPA_IO3		; BAIL OUT ON ERROR
+;
+	; SETUP LBA
+	; 3 BYTES, LITTLE ENDIAN -> BIG ENDIAN
+	LD	HL,PPA_CMD_RW+1		; START OF LBA FIELD IN CDB (MSB)
+	LD	A,(IY+PPA_LBA+2)	; THIRD BYTE OF LBA FIELD IN CFG (MSB)
+	LD	(HL),A
+	INC	HL
+	LD	A,(IY+PPA_LBA+1)
+	LD	(HL),A
+	INC	HL
+	LD	A,(IY+PPA_LBA+0)
+	LD	(HL),A
+	INC	HL
+;
+	; DO SCSI IO
+	LD	DE,(PPA_DSKBUF)		; DISK BUFFER TO DE
+	LD	BC,512			; ONE SECTOR, 512 BYTES
+	LD	HL,PPA_CMD_RW		; POINT TO READ/WRITE CMD TEMPLATE
+	CALL	PPA_RUNCMD		; RUN THE SCSI ENGINE
+	CALL	Z,PPA_CHKCMD		; IF EXIT OK, CHECK SCSI RESULTS
+	JR	NZ,PPA_IO2		; IF ERROR, SKIP INCREMENT
+	; INCREMENT LBA
+	LD	A,PPA_LBA		; LBA OFFSET
+	CALL	LDHLIYA			; HL := IY + A, REG A TRASHED
+	CALL	INC32HL			; INCREMENT THE VALUE
+	; INCREMENT DMA
+	LD	HL,PPA_DSKBUF+1		; POINT TO MSB OF BUFFER ADR
+	INC	(HL)			; BUMP DMA BY
+	INC	(HL)			; ... 512 BYTES
+	XOR	A			; SIGNAL SUCCESS
+;
+PPA_IO2:
+PPA_IO3:
+	LD	HL,(PPA_DSKBUF)		; CURRENT DMA TO HL
+	OR	A			; SET FLAGS BASED ON RETURN CODE
+	RET	Z			; RETURN IF SUCCESS
+	LD	A,ERR_IO		; SIGNAL IO ERROR
+	OR	A			; SET FLAGS
+	RET				; AND DONE
+;
+;
+;
+PPA_STATUS:
+	; RETURN UNIT STATUS
+	LD	A,(IY+PPA_STAT)		; GET STATUS OF SELECTED DEVICE
+	OR	A			; SET FLAGS
+	RET				; AND RETURN
+;
+;
+;
+PPA_RESET:
+	JP	PPA_INITDEV		; JUST (RE)INIT DEVICE
+;
+;
+;
+PPA_DEVICE:
+	LD	D,DIODEV_PPA		; D := DEVICE TYPE
+	LD	E,(IY+PPA_DEV)		; E := PHYSICAL DEVICE NUMBER
+	LD	C,%01000000		; C := REMOVABLE HARD DISK
+	LD	H,(IY+PPA_MODE)		; H := MODE
+	LD	L,(IY+PPA_IOBASE)	; L := BASE I/O ADDRESS
+	XOR	A			; SIGNAL SUCCESS
+	RET
+;
+; PPA_GETMED
+;
+PPA_MEDIA:
+	LD	A,E			; GET FLAGS
+	OR	A			; SET FLAGS
+	JR	Z,PPA_MEDIA1		; JUST REPORT CURRENT STATUS AND MEDIA
+;
+	CALL	PPA_RESET		; RESET INCLUDES MEDIA CHECK
+;
+PPA_MEDIA1:
+	LD	A,(IY+PPA_STAT)		; GET STATUS
+	OR	A			; SET FLAGS
+	LD	D,0			; NO MEDIA CHANGE DETECTED
+	LD	E,MID_HD		; ASSUME WE ARE OK
+	RET	Z			; RETURN IF GOOD INIT
+	LD	E,MID_NONE		; SIGNAL NO MEDIA
+	LD	A,ERR_NOMEDIA		; NO MEDIA ERROR
+	OR	A			; SET FLAGS
+	RET				; AND RETURN
+;
+;
+;
+PPA_SEEK:
+	BIT	7,D			; CHECK FOR LBA FLAG
+	CALL	Z,HB_CHS2LBA		; CLEAR MEANS CHS, CONVERT TO LBA
+	RES	7,D			; CLEAR FLAG REGARDLESS (DOES NO HARM IF ALREADY LBA)
+	LD	(IY+PPA_LBA+0),L	; SAVE NEW LBA
+	LD	(IY+PPA_LBA+1),H	; ...
+	LD	(IY+PPA_LBA+2),E	; ...
+	LD	(IY+PPA_LBA+3),D	; ...
+	XOR	A			; SIGNAL SUCCESS
+	RET				; AND RETURN
+;
+;
+;
+PPA_CAP:
+	LD	A,(IY+PPA_STAT)		; GET STATUS
+	PUSH	AF			; SAVE IT
+	LD	A,PPA_MEDCAP		; OFFSET TO CAPACITY FIELD
+	CALL	LDHLIYA			; HL := IY + A, REG A TRASHED
+	CALL	LD32			; GET THE CURRENT CAPACITY INTO DE:HL
+	LD	BC,512			; 512 BYTES PER BLOCK
+	POP	AF			; RECOVER STATUS
+	OR	A			; SET FLAGS
+	RET
+;
+;
+;
+PPA_GEOM:
+	; FOR LBA, WE SIMULATE CHS ACCESS USING 16 HEADS AND 16 SECTORS
+	; RETURN HS:CC -> DE:HL, SET HIGH BIT OF D TO INDICATE LBA CAPABLE
+	CALL	PPA_CAP			; GET TOTAL BLOCKS IN DE:HL, BLOCK SIZE TO BC
+	LD	L,H			; DIVIDE BY 256 FOR # TRACKS
+	LD	H,E			; ... HIGH BYTE DISCARDED, RESULT IN HL
+	LD	D,16 | $80		; HEADS / CYL = 16, SET LBA CAPABILITY BIT
+	LD	E,16			; SECTORS / TRACK = 16
+	RET				; DONE, A STILL HAS PPA_CAP STATUS
+;
+;=============================================================================
+; FUNCTION SUPPORT ROUTINES
+;=============================================================================
+;
+;
+;
+PPA_DELAY:
+	PUSH	AF
+	CALL	DELAY
+	CALL	DELAY
+	CALL	DELAY
+	CALL	DELAY
+	POP	AF
+	RET
+;
+;
+;
+PPA_WAITDONE:
+	LD	HL,0			; TIMEOUT COUNTER
+PPA_WAITDONE1:
+	CALL	PPA_READSTATUS
+	AND	$F0
+	BIT	7,A
+	RET	NZ
+	DEC	HL
+	LD	A,H
+	OR	L
+	JP	Z,IMM_CMD_TIMEOUT	; TIMEOUT
+	JR	PPA_WAITDONE1
+;
+; OUTPUT BYTE IN A TO THE DATA PORT
+;
+PPA_WRITEDATA:
+	LD	C,(IY+PPA_IOBASE)	; DATA PORT IS AT IOBASE
+	OUT	(C),A			; WRITE THE BYTE
+	;CALL	DELAY			; IS THIS NEEDED???
+	RET				; DONE
+;
+;
+;
+PPA_WRITECTRL:
+	; IBM PC INVERTS ALL BUT C2 ON THE BUS, MG014 DOES NOT.
+	; BELOW TRANSLATES FROM IBM -> MG014.	IT ALSO INVERTS THE
+	; MG014 LED SIMPLY TO MAKE IT EASY TO KEEP LED ON DURING
+	; ALL ACTIVITY.
+#IF (PPAMODE == PPAMODE_MG014
+	XOR	$0B | $80		; HIGH BIT IS MG014 LED
+#ENDIF
+	LD	C,(IY+PPA_IOBASE)	; GET BASE IO ADDRESS
+	INC	C			; BUMP TO CONTROL PORT
+	INC	C
+	OUT	(C),A			; WRITE TO CONTROL PORT
+	;CALL	DELAY			; IS THIS NEEDED?
+	RET				; DONE
+;
+; READ THE PARALLEL PORT INPUT LINES (STATUS) AND MAP SIGNALS FROM
+; MG014 TO IBM STANDARD.  NOTE POLARITY CHANGE REQUIRED FOR BUSY.
+;
+; 	MG014		IBM PC
+;	--------	--------
+;	0: /ACK		6: /ACK
+;	1: BUSY		7: /BUSY
+;	2: POUT		5: POUT
+;	3: SEL		4: SEL
+;	4: /ERR		3: /ERR
+;
+PPA_READSTATUS:
+	LD	C,(IY+PPA_IOBASE)	; IOBASE TO C
+	INC	C			; BUMP TO STATUS PORT
+	IN	A,(C)			; READ IT
+;
+#IF (PPAMODE == PPAMODE_MG014
+;
+	; SHUFFLE BITS ON MG014
+	LD	C,0			; INIT RESULT
+	BIT	0,A			; 0: /ACK
+	JR	Z,PPA_READSTATUS1
+	SET	6,C			; 6: /ACK
+PPA_READSTATUS1:
+	BIT	1,A			; 1: BUSY
+	JR	NZ,PPA_READSTATUS2	; POLARITY CHANGE!
+	SET	7,C			; 7: /BUSY
+PPA_READSTATUS2:
+	BIT	2,A			; 2: POUT
+	JR	Z,PPA_READSTATUS3
+	SET	5,C			; 5: POUT
+PPA_READSTATUS3:
+	BIT	3,A			; 3: SEL
+	JR	Z,PPA_READSTATUS4
+	SET	4,C			; 4: SEL
+PPA_READSTATUS4:
+	BIT	4,A			; 4: /ERR
+	JR	Z,PPA_READSTATUS5
+	SET	3,C			; 3: /ERR
+PPA_READSTATUS5:
+	LD	A,C			; RESULT TO A
+;
+#ENDIF
+;
+	RET
+;
+;
+;
+PPA_DPULSE:
+	CALL	PPA_WRITEDATA
+	LD	A,$0C \ CALL	PPA_WRITECTRL
+	LD	A,$0E \ CALL	PPA_WRITECTRL
+	LD	A,$0C \ CALL	PPA_WRITECTRL
+	LD	A,$04 \ CALL	PPA_WRITECTRL
+	LD	A,$0C \ CALL	PPA_WRITECTRL
+	RET
+;
+;
+;
+PPA_CPULSE:
+	CALL	PPA_WRITEDATA
+	LD	A,$04 \ CALL	PPA_WRITECTRL
+	LD	A,$06 \ CALL	PPA_WRITECTRL
+	LD	A,$04 \ CALL	PPA_WRITECTRL
+	LD	A,$0C \ CALL	PPA_WRITECTRL
+	RET
+;
+;
+;
+PPA_CONNECT:
+	LD	A,$00 \ CALL	PPA_CPULSE
+	LD	A,$3C \ CALL	PPA_CPULSE
+	LD	A,$20 \ CALL	PPA_CPULSE
+	LD	A,$8F \ CALL	PPA_CPULSE
+	RET
+;
+;
+;
+PPA_DISCONNECT:
+	LD	A,$00 \ CALL	PPA_DPULSE
+	LD	A,$3C \ CALL	PPA_DPULSE
+	LD	A,$20 \ CALL	PPA_DPULSE
+	LD	A,$0F \ CALL	PPA_DPULSE
+	RET
+;
+; SCSI SELECT PROCESS
+;
+;
+PPA_SELECT:
+	LD	A,1 << PPA_TGT
+	CALL	PPA_WRITEDATA
+	LD	A,$0E \ CALL	PPA_WRITECTRL
+	LD	A,$0C \ CALL	PPA_WRITECTRL
+	LD	A,1 << PPA_SELF
+	CALL	PPA_WRITEDATA
+	LD	A,$08 \ CALL	PPA_WRITECTRL
+;
+	LD	HL,0			; TIMEOUT COUNTER
+;
+PPA_SELECT1:
+	CALL	PPA_READSTATUS
+	OR	$F0
+	RET	NZ
+	DEC	HL
+	LD	A,H
+	OR	L
+	RET	Z			; TIMEOUT
+	JR	PPA_SELECT1
+;
+; SEND SCSI CMD BYTE STRING.  AT ENTRY, HL POINTS TO START OF
+; COMMAND BYTES.  THE LENGTH OF THE COMMAND STRING MUST PRECEED
+; THE COMMAND BYTES (HL - 1).
+;
+; NOTE THAT DATA IS SENT AS BYTE PAIRS!  EACH LOOP SENDS 2 BYTES.
+; DATA OUTPOUT IS BURSTED (NO CHECK FOR BUSY).  SEEMS TO WORK FINE.
+;
+PPA_SENDCMD:
+	JP	PPA_ERR			; NOW DO STANDARD ERR PROCESSING
+;
+; THIS IS THE MAIN SCSI ENGINE.  BASICALLY, IT SELECTS THE DEVICE
+; ON THE BUS, SENDS THE COMMAND, THEN PROCESSES THE RESULT.
+;
+; HL: COMMAND BUFFER
+; DE: TRANSFER BUFFER
+; BC: TRANSFER LENGTH (0=VARIABLE)
+;
+PPA_RUNCMD:
+	JP	PPA_ERR			; NOW DO STANDARD ERR PROCESSING
+;
+; ERRORS SHOULD GENERALLY NOT CAUSE SCSI PROCESSING TO FAIL.  IF A
+; DEVICE ERROR (I.E., READ ERROR) OCCURS, THEN THE SCSI PROTOCOL WILL
+; PROVIDE ERROR INFORMATION.  THE STATUS RESULT OF THE SCSI COMMAND
+; WILL INDICATE IF AN ERROR OCCURRED.  ADDITIONALLY, IF THE ERROR IS
+; A CHECK CONDITION ERROR, THEN IT IS MANDATORY TO ISSUE A SENSE
+; REQUEST SCSI COMMAND TO CLEAR THE ERROR AND RETRIEVE DETAILED ERROR
+; INFO.
+;
+PPA_CHKCMD:
+	; SCSI COMMAND COMPLETED, CHECK SCSI CMD STATUS
+	LD	A,(PPA_CMDSTAT)		; GET STATUS BYTE
+	OR	A			; SET FLAGS
+	RET	Z			; IF ZERO, ALL GOOD, DONE
+;
+	; DO WE HAVE A CHECK CONDITION?
+	CP	2			; CHECK CONDITION RESULT?
+	JR	Z,PPA_CHKCMD1		; IF SO, REQUEST SENSE
+	JP	PPA_IOERR		; ELSE, GENERAL I/O ERROR
+;
+PPA_CHKCMD1:
+	; USE REQUEST SENSE CMD TO GET ERROR DETAILS
+	LD	DE,HB_WRKBUF		; PUT DATA IN WORK BUF
+	LD	BC,0			; VARIABLE LENGTH REQUEST
+	LD	HL,PPA_CMD_SENSE	; REQUEST SENSE CMD
+	CALL	PPA_RUNCMD		; DO IT
+	JP	NZ,PPA_IOERR		; BAIL IF ERROR IN CMD
+;
+	; REQ SENSE CMD COMPLETED
+#IF (PPATRACE >= 3)
+	LD	A,16
+	LD	DE,HB_WRKBUF
+	CALL	Z,PRTHEXBUF
+#ENDIF
+;
+	; CHECK SCSI CMD STATUS
+	LD	A,(PPA_CMDSTAT)		; GET STATUS BYTE
+	OR	A			; SET FLAGS
+	JP	NZ,PPA_IOERR		; IF FAILED, GENERAL I/O ERROR
+;
+	; RETURN RESULT BASED ON REQ SENSE DATA
+	; TODO: WE NEED TO CHECK THE SENSE KEY FIRST!!!
+	LD	A,(HB_WRKBUF+12)	; GET ADDITIONAL SENSE CODE
+	CP	$3A			; NO MEDIA?
+	JP	Z,PPA_NOMEDIA		; IF SO, RETURN NO MEDIA ERR
+	JP	PPA_IOERR		; ELSE GENERAL I/O ERR
+;
+; CHECK CURRENT DEVICE FOR ERROR STATUS AND ATTEMPT TO RECOVER
+; VIA RESET IF DEVICE IS IN ERROR.
+;
+PPA_CHKERR:
+	LD	A,(IY+PPA_STAT)		; GET STATUS
+	OR	A			; SET FLAGS
+	CALL	NZ,PPA_RESET		; IF ERROR STATUS, RESET BUS
+	RET
+;
+; (RE)INITIALIZE DEVICE
+;
+PPA_INITDEV:
+	; INITIALIZE 8255
+	LD	A,(IY+PPA_IOBASE)	; BASE PORT
+	ADD	A,PPA_IOSETUP		; BUMP TO SETUP PORT
+	LD	C,A			; MOVE TO C FOR I/O
+	LD	A,$82			; CONFIG A OUT, B IN, C OUT
+	OUT	(C),A			; DO IT
+	CALL	DELAY			; SHORT DELAY FOR BUS SETTLE
+;
+	JP	PPA_NOTSUP
+;
+;=============================================================================
+; ERROR HANDLING AND DIAGNOSTICS
+;=============================================================================
+;
+; ERROR HANDLERS
+;
+;
+PPA_NOMEDIA:
+	LD	A,PPA_STNOMEDIA
+	JR	PPA_ERR
+;
+PPA_CMDERR:
+	LD	A,PPA_STCMDERR
+	JR	PPA_ERR
+;
+PPA_IOERR:
+	LD	A,PPA_STIOERR
+	JR	PPA_ERR
+;
+PPA_TO:
+	LD	A,PPA_STTO
+	JR	PPA_ERR
+;
+PPA_NOTSUP:
+	LD	A,PPA_STNOTSUP
+	JR	PPA_ERR
+;
+PPA_ERR:
+	LD	(IY+PPA_STAT),A		; SAVE NEW STATUS
+;
+PPA_ERR2:
+#IF (PPATRACE >= 1)
+	CALL	PPA_PRTSTAT
+#ENDIF
+	OR	A			; SET FLAGS
+	RET
+;
+;
+;
+PPA_PRTERR:
+	RET	Z			; DONE IF NO ERRORS
+	; FALL THRU TO PPA_PRTSTAT
+;
+; PRINT FULL DEVICE STATUS LINE
+;
+PPA_PRTSTAT:
+	PUSH	AF
+	PUSH	DE
+	PUSH	HL
+	LD	A,(IY+PPA_STAT)
+	CALL	PPA_PRTPREFIX		; PRINT UNIT PREFIX
+	CALL	PC_SPACE		; FORMATTING
+	CALL	PPA_PRTSTATSTR
+	POP	HL
+	POP	DE
+	POP	AF
+	RET
+;
+; PRINT STATUS STRING
+;
+PPA_PRTSTATSTR:
+	PUSH	AF
+	PUSH	DE
+	PUSH	HL
+	LD	A,(IY+PPA_STAT)
+	NEG
+	LD	HL,PPA_STR_ST_MAP
+	ADD	A,A
+	CALL	ADDHLA
+	LD	E,(HL)
+	INC	HL
+	LD	D,(HL)
+	CALL	WRITESTR
+	POP	HL
+	POP	DE
+	POP	AF
+	RET
+;
+; PRINT DIAGNONSTIC PREFIX
+;
+PPA_PRTPREFIX:
+	PUSH	AF
+	CALL	NEWLINE
+	PRTS("PPA$")
+	LD	A,(IY+IMM_DEV)		; GET CURRENT DEVICE NUM
+	CALL	PRTDECB
+	CALL	PC_COLON
+	POP	AF
+	RET
+;
+;=============================================================================
+; STRING DATA
+;=============================================================================
+;
+PPA_STR_ST_MAP:
+	.DW		PPA_STR_STOK
+	.DW		PPA_STR_STNOMEDIA
+	.DW		PPA_STR_STCMDERR
+	.DW		PPA_STR_STIOERR
+	.DW		PPA_STR_STTO
+	.DW		PPA_STR_STNOTSUP
+;
+PPA_STR_STOK		.TEXT	"OK$"
+PPA_STR_STNOMEDIA	.TEXT	"NO MEDIA$"
+PPA_STR_STCMDERR	.TEXT	"COMMAND ERROR$"
+PPA_STR_STIOERR		.TEXT	"IO ERROR$"
+PPA_STR_STTO		.TEXT	"TIMEOUT$"
+PPA_STR_STNOTSUP	.TEXT	"NOT SUPPORTED$"
+PPA_STR_STUNK		.TEXT	"UNKNOWN ERROR$"
+;
+PPA_STR_MODE_MAP:
+	.DW	PPA_STR_MODE_NONE
+	.DW	PPA_STR_MODE_SPP
+	.DW	PPA_STR_MODE_MG014
+;
+PPA_STR_MODE_NONE	.DB	"NONE$"
+PPA_STR_MODE_SPP	.DB	"SPP$"
+PPA_STR_MODE_MG014	.DB	"MG014$"
+;
+PPA_STR_NOHW		.TEXT	"NOT PRESENT$"
+;
+;=============================================================================
+; DATA STORAGE
+;=============================================================================
+;
+PPA_DEVNUM	.DB	0		; TEMP DEVICE NUM USED DURING INIT
+PPA_CMDSTK	.DW	0		; STACK PTR FOR CMD ABORTING
+PPA_DSKBUF	.DW	0		; WORKING DISK BUFFER POINTER
+PPA_XFRLEN	.DW	0		; WORKING TRANSFER LENGTH
+PPA_CMDSTAT	.DB	0, 0		; CMD RESULT STATUS
+;
+; SCSI COMMAND TEMPLATES (LENGTH PREFIXED)
+;
+		.DB	6
+PPA_CMD_RW	.DB	$00, $00, $00, $00, $01, $00	; READ/WRITE SECTOR
+		.DB	6
+PPA_CMD_SENSE	.DB	$03, $00, $00, $00, $FF, $00	; REQUEST SENSE DATA
+		.DB	10
+PPA_CMD_RDCAP	.DB	$25, $00, $00, $00, $00, $00, $00, $00, $00, $00 ; READ CAPACITY
+;
+; PPA DEVICE CONFIGURATION TABLE
+;
+PPA_CFG:
+;
+#IF (PPACNT >= 1)
+;
+PPA0_CFG:	; DEVICE 0
+	.DB	0			; DRIVER DEVICE NUMBER (FILLED DYNAMICALLY)
+	.DB	PPAMODE			; DRIVER DEVICE MODE
+	.DB	0			; DEVICE STATUS
+	.DB	PPA0BASE		; IO BASE ADDRESS
+	.DW	0,0			; DEVICE CAPACITY
+	.DW	0,0			; CURRENT LBA
+#ENDIF
+;
+#IF (PPACNT >= 2)
+;
+PPA1_CFG:	; DEVICE 1
+	.DB	0			; DRIVER DEVICE NUMBER (FILLED DYNAMICALLY)
+	.DB	PPAMODE			; DRIVER DEVICE MODE
+	.DB	0			; DEVICE STATUS
+	.DB	PPA1BASE		; IO BASE ADDRESS
+	.DW	0,0			; DEVICE CAPACITY
+	.DW	0,0			; CURRENT LBA
+#ENDIF
+;
+#IF ($ - PPA_CFG) != (PPACNT * PPA_CFGSIZ)
+	.ECHO	"*** INVALID PPA CONFIG TABLE ***\n"
+#ENDIF
+;
+	.DB	$FF			; END MARKER

Source/HBIOS/ppide.asm

@@ -4,7 +4,6 @@
 ;=============================================================================
 ;
 ; TODO:
-; - FIX SCALER CONSTANT
 ; - GOPARTNER NEEDS TO HANDLE "NO PARTNER" CONDITION
 ;
 ; NOTES:
@@ -144,9 +143,13 @@ PPIDE_REG_DRVADR	.EQU	PPIDE_CTL_CS3 | $07	; DRIVE ADDRESS REGISTER (R)
 ;
 ; COMMAND BYTES
 ;
+PPIDE_CIDE_NOP		.EQU	$00
+PPIDE_CIDE_DEVRES	.EQU	$08
 PPIDE_CMD_RECAL		.EQU	$10
 PPIDE_CMD_READ		.EQU	$20
 PPIDE_CMD_WRITE		.EQU	$30
+PPIDE_CIDE_DEVDIAG	.EQU	$90
+PPIDE_CIDE_IDPKTDEV	.EQU	$A1
 PPIDE_CMD_IDDEV		.EQU	$EC
 PPIDE_CMD_SETFEAT	.EQU	$EF
 ;
@@ -171,6 +174,7 @@ PPIDE_STIOERR	.EQU	-4
 PPIDE_STRDYTO	.EQU	-5
 PPIDE_STDRQTO	.EQU	-6
 PPIDE_STBSYTO	.EQU	-7
+PPIDE_STNOTSUP	.EQU	-8
 ;
 ; DRIVE SELECTION BYTES (FOR USE IN DRIVE/HEAD REGISTER)
 ;
@@ -217,7 +221,7 @@ PPIDE_DEV0M:	; DEVICE 0, MASTER
 	.DW	0,0			; DEVICE CAPACITY
 	.DW	0,0			; CURRENT LBA
 	.DB	PPIDE0BASE  		; DATALO
-	.DB	PPIDE0BASE+2		; CTL 
+	.DB	PPIDE0BASE+2		; CTL
 	.DB	PPIDE0BASE+3		; PPI
 	.DW	PPIDE_DEV0S		; PARTNER
 ;
@@ -230,7 +234,7 @@ PPIDE_DEV0S:	; DEVICE 0, SLAVE
 	.DW	0,0			; DEVICE CAPACITY
 	.DW	0,0			; CURRENT LBA
 	.DB	PPIDE0BASE  		; DATALO
-	.DB	PPIDE0BASE+2		; CTL 
+	.DB	PPIDE0BASE+2		; CTL
 	.DB	PPIDE0BASE+3		; PPI
 	.DW	PPIDE_DEV0M		; PARTNER
 ;
@@ -247,7 +251,7 @@ PPIDE_DEV1M:	; DEVICE 1, MASTER
 	.DW	0,0			; DEVICE CAPACITY
 	.DW	0,0			; CURRENT LBA
 	.DB	PPIDE1BASE  		; DATALO
-	.DB	PPIDE1BASE+2		; CTL 
+	.DB	PPIDE1BASE+2		; CTL
 	.DB	PPIDE1BASE+3		; PPI
 	.DW	PPIDE_DEV1S		; PARTNER
 ;
@@ -260,7 +264,7 @@ PPIDE_DEV1S:	; DEVICE 1, SLAVE
 	.DW	0,0			; DEVICE CAPACITY
 	.DW	0,0			; CURRENT LBA
 	.DB	PPIDE1BASE  		; DATALO
-	.DB	PPIDE1BASE+2		; CTL 
+	.DB	PPIDE1BASE+2		; CTL
 	.DB	PPIDE1BASE+3		; PPI
 	.DW	PPIDE_DEV1M		; PARTNER
 ;
@@ -277,10 +281,10 @@ PPIDE_DEV2M:	; DEVICE 2, MASTER
 	.DW	0,0			; DEVICE CAPACITY
 	.DW	0,0			; CURRENT LBA
 	.DB	PPIDE2BASE  		; DATALO
-	.DB	PPIDE2BASE+2		; CTL 
+	.DB	PPIDE2BASE+2		; CTL
 	.DB	PPIDE2BASE+3		; PPI
 	.DW	PPIDE_DEV2S		; PARTNER
-;	
+;
 PPIDE_DEV2S:	; DEVICE 2, SLAVE
 	.DB	$FE			; DRIVER DEVICE NUMBER (FILLED DYNAMICALLY)
 	.DB	0			; DEVICE STATUS
@@ -290,7 +294,7 @@ PPIDE_DEV2S:	; DEVICE 2, SLAVE
 	.DW	0,0			; DEVICE CAPACITY
 	.DW	0,0			; CURRENT LBA
 	.DB	PPIDE2BASE  		; DATALO
-	.DB	PPIDE2BASE+2		; CTL 
+	.DB	PPIDE2BASE+2		; CTL
 	.DB	PPIDE2BASE+3		; PPI
 	.DW	PPIDE_DEV2M		; PARTNER
 ;
@@ -302,17 +306,17 @@ PPIDE_DEV2S:	; DEVICE 2, SLAVE
 ;
 	.DB	$FF			; END OF TABLE MARKER
 ;
-; THE IDE_WAITXXX FUNCTIONS ARE BUILT TO TIMEOUT AS NEEDED SO DRIVER WILL
+; THE PPIDE_WAITXXX FUNCTIONS ARE BUILT TO TIMEOUT AS NEEDED SO DRIVER WILL
 ; NOT HANG IF DEVICE IS UNRESPONSIVE.  DIFFERENT TIMEOUTS ARE USED DEPENDING
-; ON THE SITUATION.  GENERALLY, THE FAST TIMEOUT IS USED TO PROBE FOR DEVICES
-; USING FUNCTIONS THAT PERFORM NO I/O.	OTHERWISE THE NORMAL TIMEOUT IS USED.
-; IDE SPEC ALLOWS FOR UP TO 30 SECS MAX TO RESPOND.  IN PRACTICE, THIS IS WAY
-; TOO LONG, BUT IF YOU ARE USING A VERY OLD DEVICE, THESE TIMEOUTS MAY NEED TO
-; BE ADJUSTED.	NOTE THAT THESE ARE BYTE VALUES, SO YOU CANNOT EXCEED 255.
-; THE TIMEOUTS ARE IN UNITS OF .05 SECONDS.
+; ON THE SITUATION.  THE SLOW TIMEOUT IS USED TO WAIT FOR A DEVICE TO
+; BECOME READY AFTER A HARD RESET (SPIN UP, ETC.).  THE NORMAL TIMEOUT
+; IS USED DURING NORMAL OPERATION FOR ALL I/O OPERATIONS WHICH SHOULD
+; OCCUR PRETTY FAST.  NOTE THAT THE ATA SPEC ALLOWS UP TO 30 SECONDS
+; FOR DEVICES TO RESPOND.  WE ARE USING MUCH MORE AGGRESSIVE VALUES
+; BASED ON REAL WORLD EXPERIENCE.
 ;
-PPIDE_TONORM	.EQU	200		; NORMAL TIMEOUT IS 10 SECS
-PPIDE_TOFAST	.EQU	10		; FAST TIMEOUT IS 0.5 SECS
+PPIDE_TOSLOW	.EQU	200		; SLOW TIMEOUT IS 20 SECS
+PPIDE_TONORM	.EQU	5		; NORMAL TIMEOUT IS 0.5 SECS
 ;
 ;=============================================================================
 ; INITIALIZATION ENTRY POINT
@@ -320,9 +324,12 @@ PPIDE_TOFAST	.EQU	10		; FAST TIMEOUT IS 0.5 SECS
 ;
 PPIDE_INIT:
 	; COMPUTE CPU SPEED COMPENSATED TIMEOUT SCALER
-	; AT 1MHZ, THE SCALER IS 218 (50000US / 229TS = 218)
-	; SCALER IS THEREFORE 218 * CPU SPEED IN MHZ
-	LD	DE,218			; LOAD SCALER FOR 1MHZ
+	; ONE INTERNAL LOOP IN WAITBSY IS 263TS.  ON A 1 MHZ CPU, 1 TS
+	; TAKES 1NS.  SO 1/10 SECOND IS 100000 TS ON A 1 MHZ CPU.
+	; SINCE 1 INTERNAL LOOP IS 263 TS, IT TAKES 100000 / 263 = 356
+	; INTERNAL LOOPS FOR 1/10 SECOND.  SO, WE WANT TO USE
+	; 356 * CPU MHZ FOR INTERNAL LOOP COUNT.
+	LD	DE,380			; LOAD SCALER FOR 1MHZ
 	LD	A,(CB_CPUMHZ)		; LOAD CPU SPEED IN MHZ
 	CALL	MULT8X16		; HL := DE * A
 	LD	(PPIDE_TOSCALER),HL	; SAVE IT
@@ -355,7 +362,7 @@ PPIDE_INIT2:
 	LD	DE,PPIDE_STR_NOPPI	; NO PPI MESSAGE
 	CALL	WRITESTR		; DISPLAY IT
 	JR	PPIDE_INIT4		; SKIP CFG ENTRY
-;	
+;
 PPIDE_INIT3:
 	CALL	PPIDE_RESET		; RESET THE BUS
 	CALL	PPIDE_INIT5		; DETECT/INIT MASTER
@@ -363,7 +370,7 @@ PPIDE_INIT3:
 	CALL	PPIDE_GOPARTNER		; SWITCH IY TO PARTNER CFG
 	CALL	PPIDE_INIT5		; DETECT/INIT SLAVE
 	POP	IY			; RESTORE CFG PTR
-;	
+;
 PPIDE_INIT4:
 	LD	DE,PPIDE_CFGSIZ		; SIZE OF CFG TABLE ENTRY
 	ADD	IY,DE			; BUMP POINTER
@@ -381,13 +388,28 @@ PPIDE_INIT5:
 	PUSH	IY			; CFG ENTRY POINTER
 	POP	DE			; COPY TO DE
 	CALL	DIO_ADDENT		; ADD ENTRY TO GLOBAL DISK DEV TABLE
+;
+	; START PRINTING DEVICE INFO
+	CALL	PPIDE_PRTPREFIX		; PRINT DEVICE PREFIX
+	LD	A,(IY+PPIDE_TYPE)
+	LD	DE,PPIDE_STR_TYPEATA
+	CP	PPIDE_TYPEATA
+	CALL	Z,WRITESTR
+	LD	DE,PPIDE_STR_TYPEATAPI
+	CP	PPIDE_TYPEATAPI
+	CALL	Z,WRITESTR
 ;
 	; CHECK FOR BAD STATUS
 	LD	A,(IY+PPIDE_STAT)	; GET STATUS
 	OR	A			; SET FLAGS
-	JP	NZ,PPIDE_PRTSTAT	; EXIT VIA PRINT STATUS
+	JP	Z,PPIDE_INIT6
+	CALL	PC_SPACE
+	JP	NZ,PPIDE_PRTSTATSTR	; EXIT VIA PRINT STATUS STRING
 ;
-	CALL	PPIDE_PRTPREFIX		; PRINT DEVICE PREFIX
+PPIDE_INIT6:
+	LD	A,(IY+PPIDE_TYPE)	; GET DEVICE TYPE
+	CP	PPIDE_TYPEATA		; ATA?
+	RET	NZ			; IF NOT, THEN DONE
 ;
 	LD	DE,PPIDE_STR_8BIT
 	BIT	1,(IY+PPIDE_ACC)	; 8 BIT ACCESS?
@@ -426,9 +448,9 @@ PPIDE_INIT5:
 PPIDE_DETECT:
 ;
 	; TEST FOR PPI EXISTENCE
-	; WE SETUP THE PPI TO WRITE, THEN WRITE A VALUE OF ZERO
+	; 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 ZERO. SINCE
+	; THEN THE BUS HOLD CIRCUITRY WILL READ BACK THE $A5. SINCE
 	; WE ARE IN WRITE MODE, AN IDE CONTROLLER WILL NOT BE ABLE TO
 	; INTERFERE WITH THE VALUE BEING READ.
 ;
@@ -437,14 +459,14 @@ PPIDE_DETECT:
 	OUT	(C),A			; WRITE IT
 ;
 	LD	C,(IY+PPIDE_DATALO)	; PPI PORT A, DATALO
-	XOR	A			; VALUE ZERO
+	LD	A,$A5			; TEST VALUE
 	OUT	(C),A			; PUSH VALUE TO PORT
 	IN	A,(C)			; GET PORT VALUE
 #IF (PPIDETRACE >= 3)
 	CALL	PC_SPACE
 	CALL	PRTHEXBYTE
 #ENDIF
-	OR	A			; SET FLAGS
+	CP	$A5			; CHECK FOR TEST VALUE
 	RET				; AND RETURN
 ;
 ;=============================================================================
@@ -564,26 +586,12 @@ PPIDE_DEVICE1:
 PPIDE_MEDIA:
 	LD	A,E			; GET FLAGS
 	OR	A			; SET FLAGS
-	JR	Z,PPIDE_MEDIA2		; JUST REPORT CURRENT STATUS AND MEDIA
+	JR	Z,PPIDE_MEDIA1		; JUST REPORT CURRENT STATUS AND MEDIA
 ;
-	; GET CURRENT STATUS
-	LD	A,(IY+PPIDE_STAT)	; GET STATUS
-	OR	A			; SET FLAGS
-	JR	NZ,PPIDE_MEDIA1		; ERROR ACTIVE, GO RIGHT TO RESET
-;
-	; USE IDENTIFY COMMAND TO CHECK DEVICE
-	LD	HL,PPIDE_TIMEOUT	; POINT TO TIMEOUT
-	LD	(HL),PPIDE_TOFAST	; USE FAST TIMEOUT DURING IDENTIFY COMMAND
-	CALL	PPIDE_SELUNIT		; HARDWARE SELECTION OF TARGET UNIT
-	CALL	PPIDE_IDENTIFY		; EXECUTE IDENTIFY COMMAND
-	LD	HL,PPIDE_TIMEOUT	; POINT TO TIMEOUT
-	LD	(HL),PPIDE_TONORM	; BACK TO NORMAL TIMEOUT
-	JR	Z,PPIDE_MEDIA2		; IF SUCCESS, BYPASS RESET
+	;CALL	PPIDE_RESET		; RESET IDE INTERFACE
+	CALL	PPIDE_INITUNIT		; RE-INITIALIZE UNIT
 ;
 PPIDE_MEDIA1:
-	CALL	PPIDE_RESET		; RESET IDE INTERFACE
-;
-PPIDE_MEDIA2:
 	LD	A,(IY+PPIDE_STAT)	; GET STATUS
 	OR	A			; SET FLAGS
 	LD	D,0			; NO MEDIA CHANGE DETECTED
@@ -666,6 +674,32 @@ PPIDE_SETFEAT:
 ;
 ;
 ;
+PPIDE_NOP:
+#IF (PPIDETRACE >= 3)
+	CALL	PPIDE_PRTPREFIX
+	PRTS(" NOP$")
+#ENDIF
+	LD	A,(PPIDE_DRVHD)
+	;OUT	(PPIDE_IO_DRVHD),A
+	CALL	PPIDE_OUT
+	.DB	PPIDE_REG_DRVHD
+#IF (PPIDETRACE >= 3)
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+;
+	; EXECUTE THE NOP COMMAND, BUT DON'T WAIT FOR DRDY, JUST
+	; MAKE SURE BUSY IS CLEAR.  THIS COMMAND IS USED DURING
+	; DEVICE DETECTION/INITIALIZATION AND ATAPI DEVICES WILL
+	; NOT ASSERT DRDY AFTER RESET.
+	LD	A,PPIDE_CIDE_NOP	; CMD = NOP
+	LD	(PPIDE_CMD),A		; SAVE IT
+	CALL	PPIDE_WAITBSY
+	RET	NZ
+	JP	PPIDE_RUNCMD1		; RUN COMMAND AND EXIT
+;
+;
+;
 PPIDE_IDENTIFY:
 #IF (PPIDETRACE >= 3)
 	CALL	PPIDE_PRTPREFIX
@@ -683,6 +717,35 @@ PPIDE_IDENTIFY:
 	LD	(PPIDE_CMD),A
 	CALL	PPIDE_RUNCMD
 	RET	NZ
+;
+	LD	HL,HB_WRKBUF
+	JP	PPIDE_GETBUF		; EXIT THRU BUFRD
+;
+;
+;
+PPIDE_IDENTIFYPACKET:
+#IF (PPIDETRACE >= 3)
+	CALL	PPIDE_PRTPREFIX
+	PRTS(" IDPKTDEV$")
+#ENDIF
+	LD	A,(PPIDE_DRVHD)
+	;OUT	(PPIDE_IO_DRVHD),A
+	CALL	PPIDE_OUT
+	.DB	PPIDE_REG_DRVHD
+#IF (PPIDETRACE >= 3)
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+	LD	A,PPIDE_CIDE_IDPKTDEV
+	LD	(PPIDE_CMD),A
+	CALL	PPIDE_RUNCMD
+	RET	NZ
+;
+	CALL	PPIDE_IN
+	.DB	PPIDE_REG_STAT
+	BIT	6,A			; IS DRQ SET?
+	JP	Z,PPIDE_NOMEDIA
+;
 	LD	HL,HB_WRKBUF
 	JP	PPIDE_GETBUF		; EXIT THRU BUFRD
 ;
@@ -777,10 +840,6 @@ PPIDE_SETADDR:
 #ENDIF
 	CALL	PPIDE_OUT
 	.DB	PPIDE_REG_COUNT
-;
-;;#IF (DSKYENABLE)
-;;	CALL	PPIDE_DSKY
-;;#ENDIF
 ;
 	RET
 ;
@@ -792,6 +851,7 @@ PPIDE_RUNCMD:
 	CALL	PPIDE_WAITRDY		; WAIT FOR DRIVE READY
 	RET	NZ			; BAIL OUT ON TIMEOUT
 ;
+PPIDE_RUNCMD1:
 	LD	A,(PPIDE_CMD)		; GET THE COMMAND
 #IF (PPIDETRACE >= 3)
 	CALL	PC_SPACE
@@ -982,7 +1042,7 @@ PPIDE_GETRES:
 ; HARDWARE INTERFACE ROUTINES
 ;=============================================================================
 ;
-; SOFT RESET OF ALL DEVICES ON BUS
+; RESET ALL DEVICES ON BUS
 ;
 PPIDE_RESET:
 #IF (PPIDETRACE >= 3)
@@ -990,26 +1050,10 @@ PPIDE_RESET:
 	PRTS(" RESET$")
 #ENDIF
 ;
-	; OLDER CF CARDS DO NOT SEEM TO SET THE 
-	; REGISTERS ON RESET, SO HERE WE FAKE THINGS BY
-	; SETTING THEM AS A RESET WOULD
-#IF (PPIDETRACE >= 3)
-	PRTS(" FAKE$")
-#ENDIF
-	XOR	A
-	;OUT	(IDE_IO_CYLLO),A
-	CALL	PPIDE_OUT
-	.DB	PPIDE_REG_CYLLO
-	;OUT	(IDE_IO_CYLHI),A
-	CALL	PPIDE_OUT
-	.DB	PPIDE_REG_CYLHI
-	INC	A
-	;OUT	(IDE_IO_COUNT),A
-	CALL	PPIDE_OUT
-	.DB	PPIDE_REG_COUNT
-	;OUT	(IDE_IO_SECT),A
-	CALL	PPIDE_OUT
-	.DB	PPIDE_REG_SECT
+; HARD RESET
+;
+; RESET LINE IS NORMALLY PULSED AT POWER ON.  HOWEVER, THIS IS NOT
+; DONE FOR PPIDE DEVICES, SO WE DO IT NOW.
 ;
 	; SETUP PPI TO READ
 	LD	A,PPIDE_DIR_READ	; SET DATA BUS DIRECTION TO READ
@@ -1034,18 +1078,21 @@ PPIDE_RESET:
 #ENDIF
 ;
 	; PULSE IDE RESET LINE
+#IF (PPIDETRACE >= 3)
+	PRTS(" HARD$")
+#ENDIF
 	LD	A,PPIDE_CTL_RESET
 	;OUT	(PPIDE_IO_CTL),A
 	LD	C,(IY+PPIDE_CTL)	; SET IDE ADDRESS
 	OUT	(C),A
-	LD	DE,20
+	LD	DE,20			; DELAY 320US (SPEC IS >= 25US)
 	CALL	VDELAY
 	XOR	A
 	;OUT	(PPIDE_IO_CTL),A
 	OUT	(C),A
 	LD	DE,20
 	CALL	VDELAY
-;	
+;
 #IF (DSKYENABLE)
   #IF (DSKYMODE == DSKYMODE_NG)
 	; REININT DSKY AND RESTORE CONTENTS
@@ -1057,24 +1104,55 @@ PPIDE_RESET:
   #ENDIF
 #ENDIF
 ;
-	LD	A,%00001010		; SET ~IEN, NO INTERRUPTS
+; SOME CF CARDS AND CF CARD EMULATORS NEED A LITTLE TIME TO
+; "BOOT" THEIR INTERNAL ELECTRONICS, SO THEY CANNOT ASSERT BUSY
+; IMMEDIATELY.  A SMALL WAIT IS PERFORMED HERE TO GIVE SUCH DEVICES
+; A BETTER CHANCE TO SUCCEED LATER.
+;
+;;;	CALL	LDELAY			; DELAY FOR SLAVE INIT
+	LD	DE,150000 / 16		; 
+	CALL	VDELAY			; SMALL DELAY
+;
+	JR	PPIDE_RESET3		; SKIP SOFT RESET
+;
+; SOFT RESET
+;
+; RC CANNOT ACCESS DEVICE CONTROL REG, SO SKIP THIS
+;
+PPIDE_RESET2:
+	; INITIATE SOFT RESET
+#IF (IDETRACE >= 3)
+	PRTS(" SOFT$")
+#ENDIF
+	LD	A,%00001110		; ASSERT RESET, NO INTERRUPTS
+	;OUT	(PPIDE_IO_CTRL),A
+	CALL	PPIDE_OUT
+	.DB	PPIDE_REG_CTRL
+	LD	DE,20			; DELAY 320US (SPEC IS >= 25US)
+	CALL	VDELAY
+;
+PPIDE_RESET3:
+;
+; CONFIGURE OPERATION AND END SOFT RESET
+;
+#IF (PPIDETRACE >= 3)
+	PRTS(" CONFIG$")
+#ENDIF
+	LD	A,%00001010		; DEASSERT RESET, NO INTERRUPTS
 	;OUT	(PPIDE_REG_CTRL),A
 	CALL	PPIDE_OUT
 	.DB	PPIDE_REG_CTRL
-;
-; SPEC ALLOWS UP TO 450MS FOR DEVICES TO ASSERT THEIR PRESENCE
-; VIA -DASP.  I ENCOUNTER PROBLEMS LATER ON IF I DON'T WAIT HERE
-; FOR THAT TO OCCUR.  THUS FAR, IT APPEARS THAT 150MS IS SUFFICIENT
-; FOR ANY DEVICE ENCOUNTERED.  MAY NEED TO EXTEND BACK TO 500MS
-; IF A SLOWER DEVICE IS ENCOUNTERED.
-;
-	;LD	DE,500000/16		; ~500MS
-	LD	DE,150000/16		; ~???MS
+	LD	DE,20			; DELAY 320US (SPEC IS >= 25US)
 	CALL	VDELAY
+;
+PPIDE_RESET5:
+	LD	HL,PPIDE_TONORM		; NORMAL TIMEOUT NOW
+	LD	(PPIDE_TIMEOUT),HL	; AND RESTORE IT
 ;
 	; INITIALIZE THE INDIVIDUAL UNITS (MASTER AND SLAVE).
 	; BASED ON TESTING, IT APPEARS THAT THE MASTER UNIT MUST
 	; BE DONE FIRST OR THIS BEHAVES BADLY.
+;
 	PUSH	IY			; SAVE CFG PTR
 	BIT	0,(IY+PPIDE_ACC)	; MASTER?
 	CALL	Z,PPIDE_GOPARTNER	; IF NOT, SWITCH TO MASTER
@@ -1082,7 +1160,7 @@ PPIDE_RESET:
 	CALL	PPIDE_GOPARTNER		; POINT TO SLAVE
 	CALL	PPIDE_INITUNIT		; INIT PARTNER UNIT
 	POP	IY			; RECOVER ORIG CFG PTR
-;	
+;
 	XOR	A			; SIGNAL SUCCESS
 	RET				; AND DONE
 ;
@@ -1092,14 +1170,10 @@ PPIDE_INITUNIT:
 	CALL	PPIDE_SELUNIT		; SELECT UNIT
 	RET	NZ			; ABORT IF ERROR
 
-	LD	HL,PPIDE_TIMEOUT	; POINT TO TIMEOUT
-	LD	(HL),PPIDE_TONORM	; SET NORMAL TIMEOUT
-
 	CALL	PPIDE_PROBE		; DO PROBE
 	RET	NZ			; JUST RETURN IF NOTHING THERE
 
-	CALL	PPIDE_INITDEV		; IF FOUND, ATTEMPT TO INIT DEVICE
-	RET				; DONE
+	JP	PPIDE_INITDEV		; EXIT VIA INITDEV
 ;
 ; TAKE ANY ACTIONS REQUIRED TO SELECT DESIRED PHYSICAL UNIT
 ;
@@ -1111,10 +1185,16 @@ PPIDE_SELUNIT:
 	BIT	0,(IY+PPIDE_ACC)	; MASTER?
 	JR	Z,PPIDE_SELUNIT1	; HANDLE SLAVE
 	LD	A,PPIDE_DRVMASTER	; MASTER
-	JR	PPIDE_SELUNIT2          
-PPIDE_SELUNIT1:                         
+#IF (PPIDETRACE >= 3)
+	PRTS(" MASTER$")
+#ENDIF
+	JR	PPIDE_SELUNIT2
+PPIDE_SELUNIT1:
 	LD	A,PPIDE_DRVSLAVE	; SLAVE
-PPIDE_SELUNIT2:                         
+#IF (PPIDETRACE >= 3)
+	PRTS(" SLAVE$")
+#ENDIF
+PPIDE_SELUNIT2:
 	LD	(PPIDE_DRVHD),A		; SAVE IT
 	XOR	A			; SUCCESS
 	RET
@@ -1122,10 +1202,25 @@ PPIDE_SELUNIT2:
 ;
 ;
 PPIDE_PROBE:
+;
+; PROBE FOR A DRIVE ON THE INTERFACE (EITHER MASTER OR SLAVE).
+; IDEALLY, THIS IS BEING CALLED IMMEDIATELY AFTER A HARD OR SOFT
+; INTERFACE RESET.  HOWEVER, THERE ARE SOME HARDWARE IMPLEMENTATTIONS
+; WHICH ARE CAPABLE OF NEITHER A HARD NOR SOFT RESET.  SO THIS
+; CODE SHOULD TRY TO HANDLE THE SCENARIO WHERE NO INTERFACE RESET
+; HAS OCCURRED.
+;
 #IF (PPIDETRACE >= 3)
 	CALL	PPIDE_PRTPREFIX
 	PRTS(" PROBE$")			; LABEL FOR IO ADDRESS
 #ENDIF
+;
+#IF (PPIDETRACE >= 3)
+	CALL	PPIDE_IN
+	.DB	PPIDE_REG_STAT
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
 ;
 	; SELECT DEVICE (MASTER/SLAVE)
 	LD	A,(PPIDE_DRVHD)
@@ -1136,20 +1231,60 @@ PPIDE_PROBE:
 	CALL	PC_SPACE
 	CALL	PRTHEXBYTE
 #ENDIF
-;
 	CALL	DELAY			; DELAY ~16US
 ;
+; IF WE GET HERE AND THE DRIVE IS STILL INITIALIZING, WE NEED TO
+; WAIT UNTIL THE DRIVE IS READY.  IN THIS CASE BUSY *WILL* BE HIGH.
+; BASED ON TESTING, DRDY AND DSC VALUES VARY.  EVERYTHING ELSE SEEMS
+; TO BE ZERO.  SO, WE FILTER OUT DRDY & DSC, THEN LOOK FOR BUSY=1
+; AND ALL ELSE ZERO.  THIS GENERALLY AVOIDS VALUES THAT ARE TYPICAL
+; FOR FLOATING PORTS AND SO CAN BE USED TO DETERMINE IF WE NEED TO
+; WAIT FOR THE DEVICE TO BE READY.  THIS WAIT IS MANDATORY BECAUSE
+; SOME (IF NOT ALL) DEVICES WILL NOT PERSIST REGISTER VALUES UNTIL
+; THE DRIVE IS READY.
+;
+	CALL	PPIDE_IN
+	.DB	PPIDE_REG_STAT
+#IF (PPIDETRACE >= 3)
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+;
+	AND	%10101111		; FILTER OUT DRDY & DSC
+	CP	$80			; INIT IN PROGRESS?
+	JR	NZ,PPIDE_PROBE1		; IF NOT, SKIP AHEAD
+;
+#IF (PPIDETRACE >= 3)
+	PRTS(" WAIT$")
+#ENDIF
+;
+	LD	HL,(PPIDE_TIMEOUT)	; GET CURRENT TIMEOUT
+	PUSH	HL			; SAVE IT
+	LD	HL,PPIDE_TOSLOW		; SLOW TIMEOUT FOR THIS
+	LD	(PPIDE_TIMEOUT),HL	; SET IT
+	CALL	PPIDE_WAITBSY		; WAIT FOR BUSY TO CLEAR
+	POP	HL			; RECOVER TIMEOUT
+	LD	(PPIDE_TIMEOUT),HL	; SET IT
+;
+#IF (PPIDETRACE >= 3)
+	CALL	PPIDE_IN
+	.DB	PPIDE_REG_STAT
+	CALL	PC_SPACE
+	CALL	PRTHEXBYTE
+#ENDIF
+;
 ; TEST FOR PRESENCE OF IDE REGISTERS.  USE LBA0/1 TO SEE
 ; IF VALUE CAN BE PERSISTED.  THE USE OF BOTH LBA0 AND LBA1
 ; IS TO MAINTAIN CONSISTENCY WITH TGHE THE PPIDE DRIVER BECAUSE
 ; PPI ITSELF WILL PERSIST THE LAST VALUE WRITTEN, SO WE USE
 ; MULTIPLE REGISTERS TO WORK AROUND THIS FALSE POSITIVE.
 ;
+PPIDE_PROBE1:
 	; $AA -> LBA0
 	LD	A,$AA
 	CALL	PPIDE_OUT
 	.DB	PPIDE_REG_LBA0
-;	
+;
 	; $55 => LBA1
 	LD	A,$55
 	CALL	PPIDE_OUT
@@ -1179,42 +1314,34 @@ PPIDE_PROBE:
 	CALL	PPIDE_REGDUMP
 #ENDIF
 ;
-	;JR	PPIDE_PROBE1		; *DEBUG*
-;
-PPIDE_PROBE0:
-	CALL	PPIDE_WAITBSY		; WAIT FOR BUSY TO CLEAR
-	JP	NZ,PPIDE_NOMEDIA	; CONVERT TIMEOUT TO NO MEDIA AND RETURN
-;
-#IF (PPIDETRACE >= 3)
-	CALL	PPIDE_REGDUMP
-#ENDIF
-;
-	; CHECK STATUS
-;	IN	A,(PPIDE_REG_STAT)	; GET STATUS
-	CALL	PPIDE_IN
-	.DB	PPIDE_REG_STAT
-#IF (PPIDETRACE >= 3)
-	CALL	PC_SPACE
-	CALL	PRTHEXBYTE		; IF DEBUG, PRINT STATUS
-#ENDIF
-	OR	A			; SET FLAGS TO TEST FOR ZERO
-	JP	Z,PPIDE_NOMEDIA		; CONTINUE IF NON-ZERO
-;
-PPIDE_PROBE1:
-	; ASSUME ATA DEVICE FOR NOW, RECORD TYPE AND RETURN SUCCESS
-	LD	A,PPIDE_TYPEATA		; TYPE = ATA
-	LD	(IY+PPIDE_TYPE),A	; SET IT IN INSTANCE DATA
-	XOR	A			; SIGNAL SUCCESS
-	RET				; DONE, NOTE THAT A=0 AND Z IS SET
+	XOR	A
+	RET
 ;
 ; (RE)INITIALIZE DEVICE
 ;
 PPIDE_INITDEV:
 ;
-	LD	A,(IY+PPIDE_TYPE)	; GET THE DEVICE TYPE
-	OR	A			; SET FLAGS
-	JP	Z,PPIDE_NOMEDIA		; EXIT SETTING NO MEDIA STATUS
+#IF (PPIDETRACE >= 3)
+	CALL	PPIDE_PRTPREFIX
+	PRTS(" INITDEV$")		; LABEL FOR IO ADDRESS
+#ENDIF
 ;
+; IF THE IDE STATUS BYTE IS $00, WE HAVE EITHER A NON-PRESENT SLAVE
+; OR AN ATAPI DEVICE.  TO DIFFERENTIATE THESE POSSIBILITIES, WE RUN
+; A NOP COMMAND.  IF WE HAVE AN ATAPI DEVICE, THIS WILL CAUSE THE
+; STATUS BYTE TO BE "NORMAL" (NON-ZERO).  IF THE STATUS IS STILL
+; ZERO, WE ABORT WITH A NO MEDIA STATUS.  NOTE THAT THE NOP COMMAND
+; RETURNS A COMMAND ERROR BY DESIGN.  WE JUST IGNORE THE ERROR.
+;
+	CALL	PPIDE_NOP
+	CALL	PPIDE_IN
+	.DB	PPIDE_REG_STAT
+	OR	A
+	JP	Z,PPIDE_NOMEDIA
+;
+; WE NEED TO SETUP 8-BIT MODE BEFORE DOING ANYTHING ELSE
+;
+PPIDE_INITDEV0A:
 	BIT	1,(IY+PPIDE_ACC)	; 8 BIT ACCESS?
 	JR	Z,PPIDE_INITDEV0	; NO, DO 16 BIT INIT
 	LD	A,PPIDE_FEAT_ENABLE8BIT	; FEATURE VALUE = ENABLE 8-BIT PIO
@@ -1232,10 +1359,14 @@ PPIDE_INITDEV0:
 PPIDE_INITDEV00:
 ;
 	CALL	PPIDE_IDENTIFY		; EXECUTE PPIDENTIFY COMMAND
-	RET	NZ			; BAIL OUT ON ERROR
+	JR	NZ,PPIDE_INITDEVP	; ON ERROR, TRY PACKET DEVICE
+;
+	; DECLARE WE ARE ATA
+	LD	A,PPIDE_TYPEATA		; OTHERWISE TYPE=ATA
+	LD	(IY+PPIDE_TYPE),A	; SET IT IN INSTANCE DATA
 ;
 	LD	DE,HB_WRKBUF		; POINT TO BUFFER
-#IF (PPIDETRACE >= 3)
+#IF (PPIDETRACE >= 4)
 	CALL	DUMP_BUFFER		; DUMP IT IF DEBUGGING
 #ENDIF
 ;
@@ -1255,38 +1386,15 @@ PPIDE_INITDEV00:
 	CALL	PRTHEXWORD
 #ENDIF
 ;
-; SEE PAGE 114 OF CF+ & CF SPECIFICATION REV. 3.0 FOR CF CARD
-; SIGNATURE VALUES.  ALL OF THE BELOW ARE DOCUMENTED THERE EXCEPT
-; $045A WHICH IS A VALUE DISCOVERED ON A CF<->SD CARD ADAPTER.
-;
-; SIGNATURE $045A IS NOT LISTED IN THE CF SPEC.  IT WAS ADDED BECAUSE
-; IT WAS SEEN IN THE WILD ON A CF-SD ADAPTER.  HOWEVER IT HAS NOW
-; ALSO BEEN SEEN ON A SPINNING HARD DISK.  SINCE IT IS AMBIGUOUS, I
-; WILL CONSIDER IT TO BE A HARD DISK.
-;
-	LD	BC,$848A		; STANDARD CF CARD SIGNATURE	%1000 1111 1000 1010
-	CALL	PPIDE_INITDEV000	; TEST & SET
-	LD	BC,$044A		; ALT SIG FOR CF NON-REMOVABLE	%0000 0100 0100 1010
-	CALL	PPIDE_INITDEV000	; TEST & SET
-	;LD	BC,$045A		; ?ALT SIG FOR CF NON-REMOVABLE	%0000 0100 0101 1010
-	;CALL	PPIDE_INITDEV000	; TEST & SET
-	LD	BC,$0040		; ALT SIG FOR CF NON-REMOVABLE	%0000 0000 0100 0000
-	CALL	PPIDE_INITDEV000	; TEST & SET
-	JR	PPIDE_INITDEV1		; CONTINUE INIT
-;
-PPIDE_INITDEV000:
-	; CHECK IF FIRST WORD OF IDENTIFY DATA MATCHES VALUE IN BC
-	; AND SET CF FLAG IF SO
-	LD	HL,(HB_WRKBUF)		; FIRST WORD OF IDENTIFY DATA
-	OR	A			; CLEAR CARRY
-	SBC	HL,BC			; COMPARE
-	RET	NZ			; ABORT IF NOT EQUAL
+	; DETERMINE IF COMPACTFLASH MEDIA
+	LD	A,(HB_WRKBUF+(83*2))	; LOW BYTE OF WORD 83
+	BIT	2,A			; TEST CFA FEATURE SET BIT
+	JR	Z,PPIDE_INITDEV1	; IF NOT, SKIP
 	SET	0,(IY+PPIDE_MED)	; ELSE SET FLAGS BIT FOR CF MEDIA
-	RET				; AND RETURN
 ;
 PPIDE_INITDEV1:
 	; DETERMINE IF LBA CAPABLE
-	LD	A,(HB_WRKBUF+98+1)	; GET BYTE WITH LBA BIT FROM BUFFER
+	LD	A,(HB_WRKBUF+98+1)	; HIGH BYTE OF WORD 49
 	BIT	1,A			; CHECK THE LBA BIT
 	JR	Z,PPIDE_INITDEV2	; NOT SET, BYPASS
 	SET	1,(IY+PPIDE_MED)	; SET FLAGS BIT FOR LBA
@@ -1303,12 +1411,39 @@ PPIDE_INITDEV2:
 	POP	BC			; RECOVER POINTER TO CAPACITY ENTRY
 	CALL	ST32			; SAVE CAPACITY
 ;
-	; RESET CARD STATUS TO 0 (OK)
+	; RECORD STATUS OK
 	XOR	A			; A := 0 (STATUS = OK)
 	LD	(IY+PPIDE_STAT),A	; SAVE IT
 ;
 	RET				; RETURN, A=0, Z SET
 ;
+;
+;
+PPIDE_INITDEVP:
+	CALL	PPIDE_IDENTIFYPACKET	; EXECUTE IDENTIFY COMMAND
+	RET	NZ			; BAIL OUT ON ERROR
+;
+	; DECLARE WE ARE ATAPI
+	LD	A,PPIDE_TYPEATAPI	; OTHERWISE TYPE=ATAPI
+	LD	(IY+PPIDE_TYPE),A	; SET IT IN INSTANCE DATA
+;
+	LD	DE,HB_WRKBUF		; POINT TO BUFFER
+#IF (PPIDETRACE >= 4)
+	CALL	DUMP_BUFFER		; DUMP IT IF DEBUGGING
+#ENDIF
+;
+	LD	(IY+PPIDE_MED),0		; CLEAR FLAGS
+;
+	; DONE FOR NOW, ATAPI NOT INPLEMENTED
+;
+	; RETURN NOT SUPPORTED STATUS
+	JP	PPIDE_NOTSUP		; NOT SUPPORTED
+;
+;	; RECORD STATUS OK
+;	XOR	A			; A := 0 (STATUS = OK)
+;	LD	(IY+PPIDE_STAT),A	; SAVE IT
+;	RET
+;
 ; SWITCH IY POINTER FROM CURRENT UNIT CFG TO PARTNER UNIT CFG
 ;
 PPIDE_GOPARTNER:
@@ -1332,7 +1467,7 @@ PPIDE_CHKERR:
 ;
 ;
 PPIDE_WAITRDY:
-	LD	A,(PPIDE_TIMEOUT)	; GET TIMEOUT IN 0.05 SECS
+	LD	A,(PPIDE_TIMEOUT)	; GET TIMEOUT IN 0.1 SECS
 	LD	B,A			; PUT IN OUTER LOOP VAR
 PPIDE_WAITRDY1:
 	LD	DE,(PPIDE_TOSCALER)	; CPU SPEED SCALER TO INNER LOOP VAR
@@ -1354,7 +1489,7 @@ PPIDE_WAITRDY2:
 ;
 ;
 PPIDE_WAITDRQ:
-	LD	A,(PPIDE_TIMEOUT)	; GET TIMEOUT IN 0.05 SECS
+	LD	A,(PPIDE_TIMEOUT)	; GET TIMEOUT IN 0.1 SECS
 	LD	B,A			; PUT IN OUTER LOOP VAR
 PPIDE_WAITDRQ1:
 	LD	DE,(PPIDE_TOSCALER)	; CPU SPEED SCALER TO INNER LOOP VAR
@@ -1376,14 +1511,14 @@ PPIDE_WAITDRQ2:
 ;
 ;
 PPIDE_WAITBSY:
-	LD	A,(PPIDE_TIMEOUT)	; GET TIMEOUT IN 0.05 SECS
+	LD	A,(PPIDE_TIMEOUT)	; GET TIMEOUT IN 0.1 SECS
 	LD	B,A			; PUT IN OUTER LOOP VAR
 PPIDE_WAITBSY1:
 	LD	DE,(PPIDE_TOSCALER)	; CPU SPEED SCALER TO INNER LOOP VAR
 PPIDE_WAITBSY2:
 	;IN	A,(PPIDE_REG_STAT)	; READ STATUS
-	CALL	PPIDE_IN							; 17TS + 170TS
-	.DB	PPIDE_REG_STAT							; 0TS
+	CALL	PPIDE_IN							; 17TS + 204TS
+	.DB	PPIDE_REG_STAT
 	LD	C,A			; SAVE IT				; 4TS
 	AND	%10000000		; TO FILL (OR READY TO FILL)		; 7TS
 	RET	Z								; 5TS
@@ -1392,32 +1527,32 @@ PPIDE_WAITBSY2:
 	OR	E								; 4TS
 	JR	NZ,PPIDE_WAITBSY2						; 12TS
 	DJNZ	PPIDE_WAITBSY1							; -----
-	JP	PPIDE_BSYTO		; EXIT WITH BSYTO ERR			; 229TS
+	JP	PPIDE_BSYTO		; EXIT WITH BSYTO ERR			; 263TS
 ;
 ; READ A VALUE FROM THE DEVICE POINTED TO BY IY AND RETURN IT IN A
-; 
+;
 PPIDE_IN:
 	EX	(SP),HL			; GET PARM POINTER			; 19TS
 	PUSH	BC			; SAVE INCOMING BC			; 11TS
 	LD	A,PPIDE_DIR_READ	; SET DATA BUS DIRECTION TO READ	; 7TS
-	;OUT	(PPIDE_IO_PPI),A	; DO IT					; 11TS
-	LD	C,(IY+PPIDE_PPI)	; PPI CONTROL WORD
-	OUT	(C),A			; WRITE IT
+	;OUT	(PPIDE_IO_PPI),A	; DO IT
+	LD	C,(IY+PPIDE_PPI)	; PPI CONTROL WORD			; 19TS
+	OUT	(C),A			; WRITE IT				; 12TS
 ;
 	LD	B,(HL)			; GET CTL PORT VALUE			; 7TS
-	;LD	C,PPIDE_IO_CTL		; SETUP PORT TO WRITE			; 7TS
+	;LD	C,PPIDE_IO_CTL		; SETUP PORT TO WRITE
 	;LD	C,(IY+PPIDE_CTL)	; SET IDE ADDRESS
-	DEC	C			; SET IDE ADDRESS
+	DEC	C			; SET IDE ADDRESS			; 4TS
 	OUT	(C),B			; SET ADDRESS LINES			; 12TS
 	SET	6,B			; TURN ON READ BIT			; 8TS
 	OUT	(C),B			; ASSERT READ LINE			; 12TS
 ;
-	;IN	A,(PPIDE_IO_DATALO)	; GET DATA VALUE FROM DEVICE		; 11TS
-	DEC	C
-	DEC	C
-	IN	A,(C)			; GET DATA VALUE FROM DEVICE
-	INC	C
-	INC	C
+	;IN	A,(PPIDE_IO_DATALO)	; GET DATA VALUE FROM DEVICE
+	DEC	C								; 4TS
+	DEC	C								; 4TS
+	IN	A,(C)			; GET DATA VALUE FROM DEVICE		; 12
+	INC	C								; 4TS
+	INC	C								; 4TS
 ;
 	RES	6,B			; CLEAR READ BIT			; 8TS
 	OUT	(C),B			; DEASSERT READ LINE			; 12TS
@@ -1425,9 +1560,9 @@ PPIDE_IN:
 	INC	HL			; POINT PAST PARM			; 6TS
 	EX	(SP),HL			; RESTORE STACK				; 19TS
 	RET									; 10TS
+;										; -----
+; OUTPUT VALUE IN A TO THE DEVICE POINTED TO BY IY				; 204TS
 ;
-; OUTPUT VALUE IN A TO THE DEVICE POINTED TO BY IY
-; 
 PPIDE_OUT:
 	; *** TODO *** FIX ORDER OF SET/CLEAR WRITE LINE
 	EX	(SP),HL			; GET PARM POINTER
@@ -1495,6 +1630,10 @@ PPIDE_BSYTO:
 	LD	A,PPIDE_STBSYTO
 	JR	PPIDE_ERR
 ;
+PPIDE_NOTSUP:
+	LD	A,PPIDE_STNOTSUP
+	JR	PPIDE_ERR
+;
 PPIDE_ERR:
 	LD	(IY+PPIDE_STAT),A	; SAVE NEW STATUS
 ;
@@ -1512,39 +1651,15 @@ PPIDE_PRTERR:
 	RET	Z			; DONE IF NO ERRORS
 	; FALL THRU TO PPIDE_PRTSTAT
 ;
-; PRINT STATUS STRING (STATUS NUM IN A)
+; PRINT FULL DEVICE STATUS LINE
 ;
 PPIDE_PRTSTAT:
 	PUSH	AF
 	PUSH	DE
 	PUSH	HL
 	LD	A,(IY+PPIDE_STAT)
-	OR	A
-	LD	DE,PPIDE_STR_STOK
-	JR	Z,PPIDE_PRTSTAT1
-	INC	A
-	LD	DE,PPIDE_STR_STINVUNIT
+	CP	PPIDE_STINVUNIT
 	JR	Z,PPIDE_PRTSTAT2	; INVALID UNIT IS SPECIAL CASE
-	INC	A
-	LD	DE,PPIDE_STR_STNOMEDIA
-	JR	Z,PPIDE_PRTSTAT1
-	INC	A
-	LD	DE,PPIDE_STR_STCMDERR
-	JR	Z,PPIDE_PRTSTAT1
-	INC	A
-	LD	DE,PPIDE_STR_STIOERR
-	JR	Z,PPIDE_PRTSTAT1
-	INC	A
-	LD	DE,PPIDE_STR_STRDYTO
-	JR	Z,PPIDE_PRTSTAT1
-	INC	A
-	LD	DE,PPIDE_STR_STDRQTO
-	JR	Z,PPIDE_PRTSTAT1
-	INC	A
-	LD	DE,PPIDE_STR_STBSYTO
-	JR	Z,PPIDE_PRTSTAT1
-	LD	DE,PPIDE_STR_STUNK
-PPIDE_PRTSTAT1:
 	CALL	PPIDE_PRTPREFIX		; PRINT UNIT PREFIX
 	JR	PPIDE_PRTSTAT3
 PPIDE_PRTSTAT2:
@@ -1552,12 +1667,52 @@ PPIDE_PRTSTAT2:
 	PRTS("PPIDE:$")			; NO UNIT NUM IN PREFIX FOR INVALID UNIT
 PPIDE_PRTSTAT3:
 	CALL	PC_SPACE		; FORMATTING
-	CALL	WRITESTR
+	CALL	PPIDE_PRTSTATSTR
 	POP	HL
 	POP	DE
 	POP	AF
 	RET
 ;
+; PRINT STATUS STRING
+;
+PPIDE_PRTSTATSTR:
+	PUSH	AF
+	PUSH	DE
+	LD	A,(IY+PPIDE_STAT)
+	OR	A
+	LD	DE,PPIDE_STR_STOK
+	JR	Z,PPIDE_PRTSTATSTR1
+	INC	A
+	LD	DE,PPIDE_STR_STINVUNIT
+	JR	Z,PPIDE_PRTSTATSTR1
+	INC	A
+	LD	DE,PPIDE_STR_STNOMEDIA
+	JR	Z,PPIDE_PRTSTATSTR1
+	INC	A
+	LD	DE,PPIDE_STR_STCMDERR
+	JR	Z,PPIDE_PRTSTATSTR1
+	INC	A
+	LD	DE,PPIDE_STR_STIOERR
+	JR	Z,PPIDE_PRTSTATSTR1
+	INC	A
+	LD	DE,PPIDE_STR_STRDYTO
+	JR	Z,PPIDE_PRTSTATSTR1
+	INC	A
+	LD	DE,PPIDE_STR_STDRQTO
+	JR	Z,PPIDE_PRTSTATSTR1
+	INC	A
+	LD	DE,PPIDE_STR_STBSYTO
+	JR	Z,PPIDE_PRTSTATSTR1
+	INC	A
+	LD	DE,PPIDE_STR_STNOTSUP
+	JR	Z,PPIDE_PRTSTATSTR1
+	LD	DE,PPIDE_STR_STUNK
+PPIDE_PRTSTATSTR1:
+	CALL	WRITESTR
+	POP	DE
+	POP	AF
+	RET
+;
 ; PRINT ALL REGISTERS DIRECTLY FROM DEVICE
 ; DEVICE MUST BE SELECTED PRIOR TO CALL
 ;
@@ -1616,30 +1771,6 @@ PPIDE_PRTPREFIX1:
 	CALL	PC_COLON
 	POP	AF
 	RET
-;;;
-;;;
-;;;
-;;#IF (DSKYENABLE)
-;;PPIDE_DSKY:
-;;	LD	HL,DSKY_HEXBUF		; POINT TO DSKY BUFFER
-;;	CALL	PPIDE_IN
-;;	.DB	PPIDE_REG_DRVHD
-;;	LD	(HL),A			; SAVE IN BUFFER
-;;	INC	HL			; INCREMENT BUFFER POINTER
-;;	CALL	PPIDE_IN
-;;	.DB	PPIDE_REG_CYLHI
-;;	LD	(HL),A			; SAVE IN BUFFER
-;;	INC	HL			; INCREMENT BUFFER POINTER
-;;	CALL	PPIDE_IN
-;;	.DB	PPIDE_REG_CYLLO
-;;	LD	(HL),A			; SAVE IN BUFFER
-;;	INC	HL			; INCREMENT BUFFER POINTER
-;;	CALL	PPIDE_IN
-;;	.DB	PPIDE_REG_SECT
-;;	LD	(HL),A			; SAVE IN BUFFER
-;;	CALL	DSKY_HEXOUT		; SEND IT TO DSKY
-;;	RET
-;;#ENDIF
 ;
 ;=============================================================================
 ; STRING DATA
@@ -1653,18 +1784,22 @@ PPIDE_STR_STIOERR	.TEXT	"IO ERROR$"
 PPIDE_STR_STRDYTO	.TEXT	"READY TIMEOUT$"
 PPIDE_STR_STDRQTO	.TEXT	"DRQ TIMEOUT$"
 PPIDE_STR_STBSYTO	.TEXT	"BUSY TIMEOUT$"
+PPIDE_STR_STNOTSUP	.TEXT	"NOT SUPPORTED$"
 PPIDE_STR_STUNK		.TEXT	"UNKNOWN ERROR$"
 ;
 PPIDE_STR_NO		.TEXT	"NO$"
 PPIDE_STR_NOPPI		.TEXT	"PPI NOT PRESENT$"
 PPIDE_STR_8BIT		.TEXT	" 8-BIT$"
 ;
+PPIDE_STR_TYPEATA	.TEXT	" ATA$"
+PPIDE_STR_TYPEATAPI	.TEXT	" ATAPI$"
+;
 ;=============================================================================
 ; DATA STORAGE
 ;=============================================================================
 ;
 PPIDE_TIMEOUT	.DB	PPIDE_TONORM	; WAIT FUNCS TIMEOUT IN TENTHS OF SEC
-PPIDE_TOSCALER	.DW	CPUMHZ * 218	; WAIT FUNCS SCALER FOR CPU SPEED
+PPIDE_TOSCALER	.DW	CPUMHZ * 380	; WAIT FUNCS SCALER FOR CPU SPEED
 ;
 PPIDE_CMD	.DB	0		; PENDING COMMAND TO PROCESS
 PPIDE_IOFNADR	.DW	0		; PENDING IO FUNCTION ADDRESS

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
@@ -1352,20 +1352,24 @@ diskread:
 ;
 clrled:
 #if (BIOS == BIOS_WBW)
-  #if (DIAGENABLE)
-	xor	a		; zero accum
-	out	(DIAGPORT),a	; clear diag leds
+  #if (FPLED_ENABLE)
+	;xor	a			; zero accum
+	;out	(FPLED_IO),a		; clear diag leds
+	ld	b,BF_SYSSET		; HBIOS SysGet
+	ld	c,BF_SYSSET_PANEL	; ... Panel swiches value
+	ld	l,$00			; all LEDs off
+	rst	08			; do it
   #endif
   #if (LEDENABLE)
     #if (LEDMODE == LEDMODE_STD)
-	ld	a,$FF		; led is inverted
-	out	(LEDPORT),a	; clear led
+	ld	a,$FF			; led is inverted
+	out	(LEDPORT),a		; clear led
     #endif
     #if (LEDMODE == LEDMODE_RTC)
 	; Bits 0 and 1 of the RTC latch are for the LEDs.
 	ld	a,(HB_RTCVAL)
 	and	~%00000011
-	out	(RTCIO),a	; clear led
+	out	(RTCIO),a		; clear led
 	ld	(HB_RTCVAL),a
     #endif
   #endif

Source/HBIOS/std.asm

@@ -242,6 +242,24 @@ 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
+;
 ; GDC MONITOR SELECTIONS
 ;
 GDCMON_NONE	.EQU	0
@@ -257,6 +275,12 @@ DMAMODE_Z280	.EQU	3		; Z280 INTEGRATED DMA
 DMAMODE_RC	.EQU	4		; RCBUS Z80 DMA
 DMAMODE_MBC	.EQU	5		; MBC
 ;
+; KEYBOARD MODE SELECTIONS
+;
+KBDMODE_NONE	.EQU	0
+KBDMODE_PS2	.EQU	1		; PS/2 KEYBOARD CONTROLLER
+KBDMODE_VRC	.EQU	2		; VGARC KEYBOARD CONTROLLER
+;
 ; SERIAL DEVICE CONFIGURATION CONSTANTS
 ;
 SER_DATA5	.EQU	0 << 0
@@ -425,6 +449,16 @@ 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/HBIOS/tms.asm

@@ -942,10 +942,10 @@ TMS_IDAT:
 	.DB	TMS_PPIX        ; PPI CONTROL PORT
 #ENDIF
 #IF ((TMSMODE == TMSMODE_MSXKBD) | (TMSMODE == TMSMODE_MBC))
+	.DB	KBDMODE_PS2	; PS/2 8242 KEYBOARD CONTROLLER
 	.DB	TMS_KBDST	; 8242 CMD/STATUS PORT
 	.DB	TMS_KBDDATA	; 8242 DATA PORT
 	.DB	0		; FILLER
-	.DB	0		; FILER
 #ENDIF
 ;
 	.DB	TMS_DATREG

Source/HBIOS/unlzsa2s.asm

@@ -1,3 +1,4 @@
+;  WARNING: This code does not seem to be working on Z280.  WBW - 5/3/2023
 ;
 ;  Size-optimized LZSA2 decompressor by spke & uniabis (134 bytes)
 ;
@@ -59,8 +60,8 @@
 ;  3. This notice may not be removed or altered from any source distribution.
 ;
 
-;	#DEFINE	BACKWARD_DECOMPRESS						; uncomment for data compressed with option -b (+5 bytes, -3% speed)
-;	#DEFINE	AVOID_SELFMODIFYING_CODE					; uncomment to disallow self-modifying code (-1 byte, -4% speed)
+;	#DEFINE	BACKWARD_DECOMPRESS		; uncomment for data compressed with option -b (+5 bytes, -3% speed)
+;	#DEFINE	AVOID_SELFMODIFYING_CODE	; uncomment to disallow self-modifying code (-1 byte, -4% speed)
 
 	#IFNDEF	BACKWARD_DECOMPRESS
 
@@ -78,7 +79,7 @@
 
 		#DEFINE ADD_OFFSET \
 		#DEFCONT \ ld a,e \ sub l \ ld l,a
-		#DEFCONT \ ld a,d \ sbc h \ ld h,a						; 6*4 = 24t / 6 bytes
+		#DEFCONT \ ld a,d \ sbc h \ ld h,a	; 6*4 = 24t / 6 bytes
 
 		#DEFINE BLOCKCOPY \
 		#DEFCONT \ lddr
@@ -117,7 +118,7 @@ MatchLen:		and %00000111 \ add a,2 \ cp 9
 			call z,ExtendedCode
 
 CopyMatch:		ld c,a
-			push hl						; BC = len, DE = dest, HL = -offset, SP -> [src]
+			push hl		; BC = len, DE = dest, HL = -offset, SP -> [src]
 
 	#IFNDEF	AVOID_SELFMODIFYING_CODE
 PrevOffset		.EQU $+1 \ ld hl,0
@@ -125,8 +126,8 @@ PrevOffset		.EQU $+1 \ ld hl,0
 			push ix \ pop hl
 	#ENDIF
 			ADD_OFFSET
-			BLOCKCOPY					; BC = 0, DE = dest
-			pop hl						; HL = src
+			BLOCKCOPY	; BC = 0, DE = dest
+			pop hl		; HL = src
 
 ReadToken:	ld a,(hl) \ NEXT_HL \ push af
 		and %00011000 \ jr z,NoLiterals
@@ -162,12 +163,16 @@ ExtendedCode:	call ReadNibble \ inc a \ jr z,ExtraByte
 ExtraByte	ld a,15 \ add a,c \ add a,(hl) \ NEXT_HL \ ret nc
 		ld a,(hl) \ NEXT_HL
 		ld b,(hl) \ NEXT_HL \ ret nz
-		pop bc								; RET is not needed, because RET from ReadNibble is sufficient
+		pop bc			; RET is not needed, because RET from ReadNibble is sufficient
 
 
 ReadNibble:	ld c,a
-skipLDCA	xor a \ ex af,af' \ ret m
+skipLDCA	xor a \ nop \ ex af,af' \ ret m		; NOP for Z280 bug
 		ld a,(hl) \ or $F0 \ ex af,af'
 		ld a,(hl) \ NEXT_HL \ or $0F
 		rrca \ rrca \ rrca \ rrca \ ret
 
+; The extraneous NOP instruction above is to workaround a bug in the
+; Z280 processor where ex af,af' can copy rather than swap the flags
+; register.
+; See https://www.retrobrewcomputers.org/forum/index.php?t=msg&goto=10183&

Source/HBIOS/vga.asm

@@ -1039,5 +1039,6 @@ REGS_VGA:
 ;==================================================================================================
 ;
 VGA_IDAT:
+	.DB	KBDMODE_PS2	; PS/2 8242 KEYBOARD CONTROLLER
 	.DB	VGA_KBDST
 	.DB	VGA_KBDDATA

Source/HBIOS/vrc.asm

@@ -0,0 +1,670 @@
+;======================================================================
+;	VIDEO DRIVER FOR VGARC
+;	https://www.retrobrewcomputers.org/doku.php?id=builderpages:plasmo:vgarc1:vgarc1home
+;
+;	WRITTEN BY: WAYNE WARTHEN -- 5/1/2023
+;======================================================================
+;
+; TODO:
+;
+;======================================================================
+; VGARC DRIVER - CONSTANTS
+;======================================================================
+;
+VRC_BASE	.EQU	$00		; FIRST CHAR DATA PORT
+VRC_FONTBASE	.EQU	VRC_BASE + $0C	; FIRST FONT PORT
+VRC_SCROLLIO	.EQU	$F5		; SCROLL REG PORT
+;
+VRC_KBDDATA	.EQU	$F4
+VRC_KBDST	.EQU	$F5
+;
+VRC_ROWS	.EQU	48
+VRC_COLS	.EQU	64
+;
+#DEFINE USEFONTVGARC
+#DEFINE	VRC_FONT FONTVGARC
+;
+TERMENABLE	.SET	TRUE		; INCLUDE TERMINAL PSEUDODEVICE DRIVER
+;
+;======================================================================
+; VRC DRIVER - INITIALIZATION
+;======================================================================
+;
+VRC_INIT:
+	LD	IY,VRC_IDAT		; POINTER TO INSTANCE DATA
+;
+	CALL	NEWLINE			; FORMATTING
+	PRTS("VRC: IO=0x$")
+	LD	A,VRC_BASE
+	CALL	PRTHEXBYTE
+	CALL	VRC_PROBE		; CHECK FOR HW PRESENCE
+	JR	Z,VRC_INIT1		; CONTINUE IF HW PRESENT
+;
+	; HARDWARE NOT PRESENT
+	PRTS(" NOT PRESENT$")
+	OR	$FF			; SIGNAL FAILURE
+	RET
+;
+VRC_INIT1:
+	; RECORD DRIVER ACTIVE
+	OR	$FF
+	LD	(VRC_ACTIVE),A
+	; DISPLAY CONSOLE DIMENSIONS
+	LD	A,VRC_COLS
+	CALL	PC_SPACE
+	CALL	PRTDECB
+	LD	A,'X'
+	CALL	COUT
+	LD	A,VRC_ROWS
+	CALL	PRTDECB
+	PRTS(" TEXT$")
+
+	; HARDWARE INITIALIZATION
+	CALL 	VRC_CRTINIT		; SETUP THE VGARC CHIP REGISTERS
+	CALL	VRC_LOADFONT		; LOAD FONT DATA FROM ROM TO VGARC STORAGE
+	CALL	VRC_VDARES		; RESET
+	CALL	KBD_INIT		; INITIALIZE KEYBOARD DRIVER
+
+	; ADD OURSELVES TO VDA DISPATCH TABLE
+	LD	BC,VRC_FNTBL		; BC := FUNCTION TABLE ADDRESS
+	LD	DE,VRC_IDAT		; DE := VGARC INSTANCE DATA PTR
+	CALL	VDA_ADDENT		; ADD ENTRY, A := UNIT ASSIGNED
+
+	; INITIALIZE EMULATION
+	LD	C,A			; C := ASSIGNED VIDEO DEVICE NUM
+	LD	DE,VRC_FNTBL		; DE := FUNCTION TABLE ADDRESS
+	LD	HL,VRC_IDAT		; HL := VGARC INSTANCE DATA PTR
+	CALL	TERM_ATTACH		; DO IT
+
+	XOR	A			; SIGNAL SUCCESS
+	RET
+;
+;======================================================================
+; VGARC DRIVER - VIDEO DISPLAY ADAPTER (VDA) FUNCTIONS
+;======================================================================
+;
+VRC_FNTBL:
+	.DW	VRC_VDAINI
+	.DW	VRC_VDAQRY
+	.DW	VRC_VDARES
+	.DW	VRC_VDADEV
+	.DW	VRC_VDASCS
+	.DW	VRC_VDASCP
+	.DW	VRC_VDASAT
+	.DW	VRC_VDASCO
+	.DW	VRC_VDAWRC
+	.DW	VRC_VDAFIL
+	.DW	VRC_VDACPY
+	.DW	VRC_VDASCR
+	.DW	KBD_STAT
+	.DW	KBD_FLUSH
+	.DW	KBD_READ
+	.DW	VRC_VDARDC
+#IF (($ - VRC_FNTBL) != (VDA_FNCNT * 2))
+	.ECHO	"*** INVALID VRC FUNCTION TABLE ***\n"
+	!!!!!
+#ENDIF
+
+VRC_VDAINI:
+	; RESET VDA
+	; CURRENTLY IGNORES VIDEO MODE AND BITMAP DATA
+	CALL	VRC_VDARES	; RESET VDA
+	XOR	A		; SIGNAL SUCCESS
+	RET
+
+VRC_VDAQRY:
+	LD	C,$00		; MODE ZERO IS ALL WE KNOW
+	LD	D,VRC_ROWS	; ROWS
+	LD	E,VRC_COLS	; COLS
+	LD	HL,0		; EXTRACTION OF CURRENT BITMAP DATA NOT SUPPORTED YET
+	XOR	A		; SIGNAL SUCCESS
+	RET
+
+VRC_VDARES:
+	XOR	A		; CLEAR ATTRIBUTES (REV VIDEO OFF)
+	LD	(VRC_ATTR),A	; SAVE IT
+	DEC	A		; INIT CUR NESTING, INIT TO HIDDEN
+	LD	(VRC_CURSOR),A	; SAVE IT
+	LD	HL,0		; ZERO THE SCROLL OFFSET
+	LD	(VRC_OFF),HL	; SAVE VALUE
+	XOR	A		; ZERO
+	LD	(VRC_LOFF),A	; SCROLL OFFSET (LINES)
+	LD	A,' '		; BLANK THE SCREEN
+	LD	DE,VRC_ROWS*VRC_COLS	; FILL ENTIRE BUFFER
+	CALL	VRC_FILL	; DO IT
+	LD	DE,0		; ROW = 0, COL = 0
+	CALL	VRC_XY		; SEND CURSOR TO TOP LEFT
+	CALL	VRC_SHOWCUR	; NOW SHOW THE CURSOR
+;
+	XOR	A		; SIGNAL SUCCESS
+	RET
+
+VRC_VDADEV:
+	LD	D,VDADEV_VRC	; D := DEVICE TYPE
+	LD	E,0		; E := PHYSICAL UNIT IS ALWAYS ZERO
+	LD	H,0		; H := 0, DRIVER HAS NO MODES
+	LD	L,VRC_BASE	; L := BASE I/O ADDRESS
+	XOR	A		; SIGNAL SUCCESS
+	RET
+
+VRC_VDASCS:
+	SYSCHKERR(ERR_NOTIMPL)	; NOT IMPLEMENTED (YET)
+	RET
+
+VRC_VDASCP:
+	CALL	VRC_XY		; SET CURSOR POSITION
+	XOR	A		; SIGNAL SUCCESS
+	RET
+
+VRC_VDASAT:
+	; INCOMING IS:  -----RUB (R=REVERSE, U=UNDERLINE, B=BLINK)
+	;
+	; ALL WE SUPPORT IS REVERSE.  MOVE BIT TO BIT 7 OF ATTR BYTE
+	LD	A,E		; GET ATTR VALUE
+	RRCA			; ROTATE TO BIT 7
+	RRCA
+	RRCA
+	AND	$80		; ENSURE ONLY BIT 7
+	LD	(VRC_ATTR),A	; SAVE IT
+	XOR	A		; SIGNAL SUCCESS
+	RET			; DONE
+
+VRC_VDASCO:
+	; INCOMING IS:  IBGRIBGR (I=INTENSITY, B=BLUE, G=GREEN, R=RED)
+	;
+	; NONE SUPPORTED, IGNORE
+	XOR	A		; SIGNAL SUCCESS
+	RET			; DONE
+
+VRC_VDAWRC:
+	LD	A,E		; CHARACTER TO WRITE GOES IN A
+	CALL	VRC_PUTCHAR	; PUT IT ON THE SCREEN
+	XOR	A		; SIGNAL SUCCESS
+	RET
+
+VRC_VDAFIL:
+	LD	A,E		; FILL CHARACTER GOES IN A
+	EX	DE,HL		; FILL LENGTH GOES IN DE
+	CALL	VRC_FILL	; DO THE FILL
+	XOR	A		; SIGNAL SUCCESS
+	RET
+
+VRC_VDACPY:
+	; LENGTH IN HL, SOURCE ROW/COL IN DE, DEST IS VRC_POS
+	; BLKCPY USES: HL=SOURCE, DE=DEST, BC=COUNT
+	PUSH	HL		; SAVE LENGTH
+	CALL	VRC_XY2IDX	; ROW/COL IN DE -> SOURCE ADR IN HL
+	POP	BC		; RECOVER LENGTH IN BC
+	LD	DE,(VRC_POS)	; PUT DEST IN DE
+	JP	VRC_BLKCPY	; DO A BLOCK COPY
+
+VRC_VDASCR:
+	LD	A,E		; LOAD E INTO A
+	OR	A		; SET FLAGS
+	RET	Z		; IF ZERO, WE ARE DONE
+	PUSH	DE		; SAVE E
+	JP	M,VRC_VDASCR1	; E IS NEGATIVE, REVERSE SCROLL
+	CALL	VRC_SCROLL	; SCROLL FORWARD ONE LINE
+	POP	DE		; RECOVER E
+	DEC	E		; DECREMENT IT
+	JR	VRC_VDASCR	; LOOP
+VRC_VDASCR1:
+	CALL	VRC_RSCROLL	; SCROLL REVERSE ONE LINE
+	POP	DE		; RECOVER E
+	INC	E		; INCREMENT IT
+	JR	VRC_VDASCR	; LOOP
+
+;----------------------------------------------------------------------
+; READ VALUE AT CURRENT VDU BUFFER POSITION
+; RETURN E = CHARACTER, B = COLOUR, C = ATTRIBUTES
+;----------------------------------------------------------------------
+
+VRC_VDARDC:
+	OR	$FF		; UNSUPPORTED FUNCTION
+	RET
+;
+;======================================================================
+; VGARC DRIVER - PRIVATE DRIVER FUNCTIONS
+;======================================================================
+;
+;
+;----------------------------------------------------------------------
+; PROBE FOR VGARC HARDWARE
+;----------------------------------------------------------------------
+;
+; ON RETURN, ZF SET INDICATES HARDWARE FOUND
+;
+VRC_PROBE:
+	LD	C,VRC_BASE + 1		; +1 AVOIDS LEDS
+	LD	B,$00
+	LD	A,$AA
+	OUT	(C),A
+	INC	B
+	LD	A,$55
+	OUT	(C),A
+	DEC	B
+	IN	A,(C)
+	CP	$AA
+	RET	NZ
+	INC	B
+	IN	A,(C)
+	CP	$55
+	RET
+;
+;----------------------------------------------------------------------
+; CRTC DISPLAY CONTROLLER CHIP INITIALIZATION
+;----------------------------------------------------------------------
+;
+VRC_CRTINIT:
+	XOR	A			; ZERO ACCUM
+	LD	A,$80			; ACTIVATE AND ZERO HW SCROLL
+	OUT	(VRC_SCROLLIO),A	; RESET HW SCROLL
+	RET				; DONE
+;
+;----------------------------------------------------------------------
+; LOAD FONT DATA
+;----------------------------------------------------------------------
+;
+VRC_LOADFONT:
+;
+#IF USELZSA2
+	LD	(VRC_STACK),SP		; SAVE STACK
+	LD	HL,(VRC_STACK)		; AND SHIFT IT
+	LD	DE,$2000		; DOWN 4KB TO
+	OR	A			; CREATE A
+	SBC	HL,DE			; DECOMPRESSION BUFFER
+	LD	SP,HL			; HL POINTS TO BUFFER
+	EX	DE,HL			; START OF STACK BUFFER
+	PUSH	DE			; SAVE IT
+	LD	HL,VRC_FONT		; START OF FONT DATA
+	CALL	DLZSA2			; DECOMPRESS TO DE
+	POP	HL			; RECALL STACK BUFFER POSITION
+#ELSE
+	LD	HL,VRC_FONT		; START OF FONT DATA
+#ENDIF
+;
+#IF 0
+	; THIS APPROACH TO LOADING FONTS IS BEST (FASTEST), BUT IS
+	; CAUSING ARTIFACTS ON THE DISPLAYED FONTS WHEN RUN ON A
+	; Z280.  IT IS NOT CLEAR WHAT THE PROBLEM IS (POSSIBLY
+	; Z280 BUG), BUT FOR NOW WE AVOID THIS AND USE AN
+	; ALTERNATIVE APPROACH BELOW.
+	LD	DE,0+(128*8)-1		; LENGTH OF FONT DATA - 1
+	ADD	HL,DE			; ADD TO HL
+	LD	BC,VRC_FONTBASE+3	; WORK BACKWARDS
+	OTDR				; DO 4 PAGES
+	DEC	C
+	OTDR
+	DEC	C
+	OTDR
+	DEC	C
+	OTDR
+	DEC	C
+#ENDIF
+;
+#IF 1
+	; ALTERNATIVE APPROACH TO LOADING FONTS.  THIS ONE AVOIDS
+	; THE USE OF OTDR WHICH SEEMS TO CAUSE PROBLEMS ON Z280.
+	LD	B,0
+	LD	C,VRC_FONTBASE
+VRC_LOADFONT1:
+	LD	A,(HL)
+	OUT	(C),A
+	INC	HL
+	INC	B
+	JR	NZ,VRC_LOADFONT1
+	INC	C
+	LD	A,C
+	CP	VRC_FONTBASE + 4
+	JR	NZ,VRC_LOADFONT1
+#ENDIF
+;
+#IF USELZSA2
+	LD	HL,(VRC_STACK)		; ERASE DECOMPRESS BUFFER
+	LD	SP,HL			; BY RESTORING THE STACK
+	RET				; DONE
+VRC_STACK	.DW	0
+#ELSE
+	RET
+#ENDIF
+;
+;----------------------------------------------------------------------
+; SET CURSOR POSITION TO ROW IN D AND COLUMN IN E
+;----------------------------------------------------------------------
+;
+VRC_XY:
+	PUSH	DE			; SAVE NEW POSITION FOR NOW
+	CALL	VRC_HIDECUR		; HIDE THE CURSOR
+	POP	DE			; RECOVER INCOMING ROW/COL
+	CALL	VRC_XY2IDX		; CONVERT ROW/COL TO BUF IDX
+	LD	(VRC_POS),HL		; SAVE THE RESULT (DISPLAY POSITION)
+	JP	VRC_SHOWCUR		; SHOW THE CURSOR AND EXIT
+;
+;----------------------------------------------------------------------
+; CONVERT XY COORDINATES IN DE INTO LINEAR INDEX IN HL
+; D=ROW, E=COL
+;----------------------------------------------------------------------
+;
+VRC_XY2IDX:
+	LD	A,E			; SAVE COLUMN NUMBER IN A
+	LD	H,D			; SET H TO ROW NUMBER
+	LD	E,VRC_COLS		; SET E TO ROW LENGTH
+	CALL	MULT8			; MULTIPLY TO GET ROW OFFSET, H * E = HL, E=0, B=0
+	LD	E,A			; GET COLUMN BACK
+	ADD	HL,DE			; ADD IT IN
+
+	LD	DE,(VRC_OFF)		; SCREEN OFFSET
+	ADD	HL,DE			; ADJUST
+;
+	PUSH	HL			; SAVE IT
+	LD	DE,VRC_ROWS * VRC_COLS	; DE := BUF SIZE
+	OR	A			; CLEAR CARRY
+	SBC	HL,DE			; SUBTRACT FROM HL
+	JR	C,VRC_XY2IDX1		; BYPASS IF NO WRAP
+	POP	DE			; THROW AWAY TOS
+	RET				; DONE
+VRC_XY2IDX1:
+	POP	HL			; NO WRAP, RESTORE
+	RET				; RETURN
+;
+;----------------------------------------------------------------------
+; SHOW OR HIDE CURSOR
+;----------------------------------------------------------------------
+;
+; VGARC USES HIGH BIT OF CHAR VALUE FOR INVERSE VIDEO.  WE HAVE NO
+; HARDWARE CURSOR, SO WE LEVERAGE THE INVERSE VIDEO TO SHOW A CURSOR.
+; SINCE ANY OPERATION THAT POTENTIALLY OVERWERITES THE CURSOR POSITION
+; COULD DESTROY THE CURSOR, WE HAVE A COUPLE FUNCTIONS TO SHOW AND
+; HIDE THE CURSOR.  A VARIABLE IS USED TO TRACK THE SHOW/HIDE
+; OPERATIONS BECAUSE WE MAY HAVE NESTED CALLS.  ZERO MEANS SHOW
+; REAL CURSOR.  ANY VALUE LESS THAN ZERO MEANS HIDDEN.
+;
+VRC_SHOWCUR:
+	LD	A,(VRC_CURSOR)		; GET CURRENT NESTING VALUE
+	INC	A			; INCREMENT TO SHOW
+	LD	(VRC_CURSOR),A		; SAVE IT
+	RET	NZ			; ALREADY SHOWN, NOTHING TO DO
+;
+	; WE TRANSITIONED FROM NON-ZERO TO ZERO.  NEED TO ACTUALLY
+	; SHOW THE CURSOR NOW.
+;
+	JR	VRC_FLIPCUR
+;
+VRC_HIDECUR:
+	LD	A,(VRC_CURSOR)		; GET CURRENT NESTING VALUE
+	DEC	A			; DECREMENT TO HIDE
+	LD	(VRC_CURSOR),A		; SAVE IT
+	INC	A			; BACK TO ORIGINAL VALUE
+	RET	NZ			; ALREADY HIDDEN, NOTHING TO DO
+;
+	; WE TRANSITIONED FROM ZERO TO NEGATIVE.  NEED TO ACTUALLY
+	; HIDE THE CURSOR NOW.  SINCE SHOWING AND HIDING ARE THE
+	; SAME OPERATION (FLIP REV VID BIT), WE REUSE CODE ABOVE.
+;
+	JR	VRC_FLIPCUR
+;
+VRC_FLIPCUR:
+	; SHOWING OR HIDING THE CURSOR IS THE SAME OPERATION.
+	; SO WE USE COMMON CODE TO FLIP THE REV VID BIT.
+	LD	HL,(VRC_POS)		; CURSOR POSITION
+	LD	B,L			; INVERT FOR I/O
+	LD	C,H
+	IN	A,(C)			; GET VALUE
+	XOR	$80			; FLIP REV VID BIT
+	OUT	(C),A			; WRITE NEW VALUE
+	RET
+;
+;----------------------------------------------------------------------
+; WRITE VALUE IN A TO CURRENT VDU BUFFER POSITION, ADVANCE CURSOR
+;----------------------------------------------------------------------
+;
+VRC_PUTCHAR:
+	; WRITE CHAR AT CURRENT CURSOR POSITION.  SINCE THE CURSOR
+	; IS JUST THE HIGH BIT (REV VIDEO), WE FIRST TURN OFF THE
+	; CURSOR, WRITE THE CHAR, UPDATE THE CURSOR POSITION, AND
+	; FINALLY TURN THE CURSOR BACK ON AT THE NEW POSITION.
+;
+	PUSH	AF			; SAVE INCOMING CHAR
+	CALL	VRC_HIDECUR		; HIDE CURSOR
+	POP	AF
+	LD	HL,(VRC_POS)		; GET CUR BUF POSITION
+	LD	B,L			; INVERT FOR I/O
+	LD	C,H
+	AND	$7F			; SUPPRESS ATTRIBUTE (HI BIT)
+	LD	L,A			; PUT VALUE IN L
+	LD	A,(VRC_ATTR)		; GET CURRENT ATTRIBUTE
+	OR	L			; COMBINE WITH CHAR VALUE
+	OUT	(C),A			; WRITE VALUE TO BUFFER
+;
+	; SET CURSOR AT NEW POSITION
+	LD	HL,(VRC_POS)		; GET CURRENT BUF OFFSET
+	INC	HL			; INCREMENT
+	PUSH	HL			; SAVE IT
+	LD	DE,VRC_ROWS * VRC_COLS	; DE := BUF SIZE
+	OR	A			; CLEAR CARRY
+	SBC	HL,DE			; SUBTRACT FROM HL
+	JR	C,VRC_PUTCHAR1		; BYPASS IF NO WRAP
+	POP	DE			; THROW AWAY TOS
+	LD	HL,0			; BACK TO START
+	JR	VRC_PUTCHAR2		; CONTINUE
+VRC_PUTCHAR1:
+	POP	HL			; NO WRAP, RESTORE
+VRC_PUTCHAR2:
+	LD	(VRC_POS),HL		; SAVE NEW POSITION
+	JP	VRC_SHOWCUR		; SHOW IT AND RETURN
+;
+;----------------------------------------------------------------------
+; FILL AREA IN BUFFER WITH SPECIFIED CHARACTER AND CURRENT COLOR/ATTRIBUTE
+; STARTING AT THE CURRENT FRAME BUFFER POSITION
+;   A: FILL CHARACTER
+;   DE: NUMBER OF CHARACTERS TO FILL
+;----------------------------------------------------------------------
+;
+VRC_FILL:
+	LD	(VRC_FILL1+1),A		; SAVE FILL CHAR
+	PUSH	DE			; SAVE INCOMING DE
+	CALL	VRC_HIDECUR		; HIDE CURSOR
+	POP	DE			; RESTORE INCOMING DE
+	LD	HL,(VRC_POS)		; STARTING POSITION
+;
+VRC_FILL1:
+	LD	A,$FF			; FILL CHAR
+	LD	B,L			; INVERT FOR I/O
+	LD	C,H
+	OUT	(C),A			; PUT CHAR TO BUF
+;
+	DEC	DE			; DECREMENT COUNT
+	LD	A,D			; TEST FOR ZERO
+	OR	E
+	JP	Z,VRC_SHOWCUR		; EXIT VIA SHOW CURSOR IF DONE
+;
+	INC	HL			; INCREMENT
+	PUSH	HL			; SAVE IT
+	LD	BC,VRC_ROWS * VRC_COLS	; BC := BUF SIZE
+	OR	A			; CLEAR CARRY
+	SBC	HL,BC			; SUBTRACT FROM HL
+	JR	C,VRC_FILL2		; BYPASS IF NO WRAP
+	POP	BC			; THROW AWAY TOS
+	LD	HL,0			; BACK TO START
+	JR	VRC_FILL3		; CONTINUE
+VRC_FILL2:
+	POP	HL			; NO WRAP, RESTORE
+VRC_FILL3:
+	LD	(VRC_POS),HL		; SAVE NEW POSITION
+	JR	VRC_FILL1		; LOOP TILL DONE
+;
+;----------------------------------------------------------------------
+; SCROLL ENTIRE SCREEN FORWARD BY ONE LINE (CURSOR POSITION UNCHANGED)
+;----------------------------------------------------------------------
+;
+VRC_SCROLL:
+	; SCROLL DOWN 1 LINE VIA HARDWARE
+	CALL	VRC_HIDECUR		; SUPPRESS CURSOR
+	LD	A,(VRC_LOFF)		; GET LINE OFFSET
+	INC	A			; BUMP
+	CP	VRC_ROWS		; OVERFLOW?
+	JR	C,VRC_SCROLL1		; IF NOT, SKIP
+	XOR	A			; ELSE, BACK TO ZERO
+VRC_SCROLL1:
+	LD	(VRC_LOFF),A		; SAVE NEW VALUE
+	OR	$80			; SET HW SCROLL ENABLE BIT
+	OUT	(VRC_SCROLLIO),A	; DO IT
+;
+	; ADJUST BUFFER OFFSET
+	LD	HL,(VRC_OFF)		; BUFFER OFFSET
+	LD	DE,VRC_COLS		; COLUMNS
+	ADD	HL,DE			; ADD TO GET NEW OFFSET
+	PUSH	HL			; SAVE IT
+	LD	DE,VRC_ROWS * VRC_COLS	; DE := BUF SIZE
+	OR	A			; CLEAR CARRY
+	SBC	HL,DE			; SUBTRACT FROM HL
+	JR	C,VRC_SCROLL2		; BYPASS IF NO WRAP
+	POP	DE			; BURN TOS
+	JR	VRC_SCROLL3		; CONTINUE
+VRC_SCROLL2:
+	POP	HL			; NO WRAP, RESTORE HL
+VRC_SCROLL3:
+	LD	(VRC_OFF),HL		; SAVE NEW OFFSET
+;
+	; FILL EXPOSED LINE
+	LD	HL,(VRC_POS)		; GET CURSOR POS
+	PUSH	HL			; SAVE IT
+	LD	D,VRC_ROWS - 1		; LAST ROW
+	LD	E,0			; FIRST COLUMN
+	CALL	VRC_XY2IDX		; HL = START OF LAST LINE
+	LD	(VRC_POS),HL		; SET FILL POSITION
+	LD	A,' '			; FILL WITH BLANKS
+	LD	DE,VRC_COLS		; FILL ONE LINE
+	CALL	VRC_FILL		; FILL LAST LINE
+	POP	HL			; RECOVER CURSOR POS
+	LD	(VRC_POS),HL		; PUT VALUE BACK
+;
+	; ADJUST CURSOR POSITION 
+	LD	HL,(VRC_POS)		; CURSOR POSITION
+	LD	DE,VRC_COLS		; COLUMNS
+	ADD	HL,DE			; NEW CURSOR POS
+	PUSH	HL			; SAVE IT
+	LD	DE,VRC_ROWS * VRC_COLS	; DE := DISPLAY SIZE
+	OR	A			; CLEAR CARRY
+	SBC	HL,DE			; SUBTRACT FROM HL
+	JR	C,VRC_SCROLL4		; BYPASS IF NO WRAP
+	POP	DE			; BURN TOS
+	JR	VRC_SCROLL5		; CONTINUE
+VRC_SCROLL4:
+	POP	HL			; NO WRAP, RESTORE HL
+VRC_SCROLL5:
+	LD	(VRC_POS),HL		; SAVE NEW CURSOR POS
+	JP	VRC_SHOWCUR		; EXIT VIA SHOW CURSOR
+;
+;----------------------------------------------------------------------
+; REVERSE SCROLL ENTIRE SCREEN BY ONE LINE (CURSOR POSITION UNCHANGED)
+;----------------------------------------------------------------------
+;
+VRC_RSCROLL:
+	; SCROLL UP 1 LINE VIA HARDWARE
+	CALL	VRC_HIDECUR		; SUPPRESS CURSOR
+	LD	A,(VRC_LOFF)		; GET LINE OFFSET
+	DEC	A			; BUMP
+	CP	$FF			; OVERFLOW?
+	JR	NZ,VRC_RSCROLL1		; IF NOT, SKIP
+	LD	A,VRC_ROWS - 1		; ELSE, BACK TO LAST ROW
+VRC_RSCROLL1:
+	LD	(VRC_LOFF),A		; SAVE NEW VALUE
+	OR	$80			; SET HW SCROLL ENABLE BIT
+	OUT	(VRC_SCROLLIO),A	; DO IT
+;
+	; ADJUST BUFFER OFFSET
+	LD	HL,(VRC_OFF)		; BUFFER OFFSET
+	LD	DE,VRC_COLS		; COLUMNS
+	OR	A			; CLEAR CARRY
+	SBC	HL,DE			; SUBTRACT TO GET NEW OFFSET
+	PUSH	HL			; SAVE IT
+	JR	NC,VRC_RSCROLL2		; BYPASS IF NO WRAP
+	LD	DE,VRC_ROWS * VRC_COLS	; DISPLAY SIZE
+	ADD	HL,DE			; HANDLE WRAP
+	POP	DE			; BURN TOS
+	JR	VRC_RSCROLL3		; CONTINUE
+VRC_RSCROLL2:
+	POP	HL			; NO WRAP, RESTORE HL
+VRC_RSCROLL3:
+	LD	(VRC_OFF),HL		; SAVE NEW OFFSET
+;
+	; FILL EXPOSED LINE
+	LD	HL,(VRC_POS)		; GET CURSOR POS
+	PUSH	HL			; SAVE IT
+	LD	D,0			; FIRST ROW
+	LD	E,0			; FIRST COLUMN
+	CALL	VRC_XY2IDX		; HL = START OF FIRST LINE
+	LD	(VRC_POS),HL		; SET FILL POSITION
+	LD	A,' '			; FILL WITH BLANKS
+	LD	DE,VRC_COLS		; FILL ONE LINE
+	CALL	VRC_FILL		; FILL FIRST LINE
+	POP	HL			; RECOVER CURSOR POS
+	LD	(VRC_POS),HL		; PUT VALUE BACK
+;
+	; ADJUST CURSOR POSITION 
+	LD	HL,(VRC_POS)		; CURSOR POSITION
+	LD	DE,VRC_COLS		; COLUMNS
+	OR	A			; CLEAR CARRY
+	SBC	HL,DE			; NEW CURSOR POS
+	PUSH	HL			; SAVE IT
+	JR	NC,VRC_RSCROLL4		; BYPASS IF NO WRAP
+	LD	DE,VRC_ROWS * VRC_COLS	; DISPLAY SIZE
+	ADD	HL,DE			; HANDLE WRAP
+	POP	DE			; BURN TOS
+	JR	VRC_RSCROLL5		; CONTINUE
+VRC_RSCROLL4:
+	POP	HL			; NO WRAP, RESTORE HL
+VRC_RSCROLL5:
+	LD	(VRC_POS),HL		; SAVE NEW CURSOR POS
+	JP	VRC_SHOWCUR		; EXIT VIA SHOW CURSOR
+;
+;----------------------------------------------------------------------
+; BLOCK COPY BC BYTES FROM HL TO DE
+;----------------------------------------------------------------------
+;
+VRC_BLKCPY:
+	PUSH	BC
+	PUSH	HL
+	CALL	VRC_HIDECUR
+	POP	HL
+	POP	BC
+;
+VRC_BLKCPY1:
+	LD	A,B
+	OR	C
+	JP	Z,VRC_SHOWCUR		; EXIT VIA SHOW CURSOR
+;
+	PUSH	BC			; SAVE LOOP CTL
+	LD	B,L			; INVERT FOR I/O
+	LD	C,H
+	IN	A,(C)			; GET SOURCE CHAR
+	LD	B,E			; INVERT FOR I/O
+	LD	C,D
+	OUT	(C),A			; WRITE DEST CHAR
+	POP	BC			; RESTORE LOOP CTL
+;
+	INC	HL			; NEXT SRC CHAR
+	INC	DE			; NEXT DEST CHAR
+	DEC	BC			; DEC COUNT
+	JR	VRC_BLKCPY1		; LOOP TILL DONE
+;
+;==================================================================================================
+;   VGARC DRIVER - DATA
+;==================================================================================================
+;
+VRC_ATTR	.DB	0	; CURRENT COLOR
+VRC_POS		.DW 	0	; CURRENT DISPLAY POSITION
+VRC_OFF		.DW	0	; SCREEN START OFFSET INTO DISP BUF
+VRC_LOFF	.DB	0	; LINE OFFSET INTO DISP BUF
+VRC_CURSOR	.DB	0	; CURSOR NESTING LEVEL
+VRC_ACTIVE	.DB	FALSE	; FLAG FOR DRIVER ACTIVE
+;
+;==================================================================================================
+;   VGA DRIVER - INSTANCE DATA
+;==================================================================================================
+;
+VRC_IDAT:
+	.DB	KBDMODE_VRC	; VGARC KEYBOARD CONTROLLER
+	.DB	VRC_KBDST
+	.DB	VRC_KBDDATA

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.5"
+#DEFINE BIOSVER	"3.3.0-dev.17"
 #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.5"
+	db	"3.3.0-dev.17"
 	endm