Document p-System Volume Management Python Script

- Andrew Davidson created a nice Python script to extract/insert p-System volumes from/to disk images.  Added a reference to his website in the p-System ReadMe.txt file.

Doc/ChangeLog.txt

@@ -5,6 +5,8 @@ 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
 
 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
+03 May 2023
 
 # Overview
 

ReadMe.txt

@@ -1,6 +1,6 @@
 RomWBW ReadMe
 Wayne Warthen (wwarthen@gmail.com)
-16 Apr 2023
+03 May 2023
 
 
 

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
 
@@ -3923,5 +3926,6 @@ 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

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

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

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

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

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]

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

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

@@ -35,9 +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	$00		; DIAGNOSTIC PORT 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)
 ;
 DSRTCENABLE	.SET	TRUE		; DSRTC: ENABLE DS-1302 CLOCK DRIVER (DSRTC.ASM)
@@ -52,6 +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	$00		; 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	$00		; 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	$00		; 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	$00		; 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

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
@@ -309,7 +311,9 @@ 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|IBM|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
 ;

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
@@ -232,8 +234,10 @@ 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_IBM	; LPT: DRIVER MODE: LPTMODE_[NONE|IBM|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
 ;

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
@@ -246,7 +248,9 @@ 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|IBM|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
 ;

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

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 +257,11 @@ 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|IBM|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
 ;
 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 +261,11 @@ 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|IBM|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
 ;
 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 +255,11 @@ 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|IBM|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
 ;
 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

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
@@ -232,7 +234,9 @@ 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|IBM|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
 ;

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	$00		; 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 +251,11 @@ 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|IBM|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
 ;
 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

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

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

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
@@ -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
@@ -3488,7 +3468,7 @@ 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 +3558,7 @@ 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 +3655,9 @@ 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 +3665,8 @@ 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 +4516,11 @@ 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 +4828,9 @@ 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 +6161,15 @@ 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 +6225,22 @@ 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
@@ -6438,11 +6437,101 @@ 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 +6647,6 @@ 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
 ;==================================================================================================
@@ -7221,6 +7200,7 @@ 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 +7340,7 @@ CST2:
 	RET
 ;
 ;==================================================================================================
-;   MISCELLANEOUS UTILITY FUNCTIONS
+;   INTERNAL UTILITY FUNCTIONS
 ;==================================================================================================
 ;
 ; SET HL TO IY+A, A IS TRASHED
@@ -7397,6 +7377,117 @@ 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

@@ -338,7 +338,7 @@ 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/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

@@ -3,12 +3,15 @@
 ; 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.
 ;
+;==================================================================================================
+;
+;  IBM STYLE INTERFACE (USED BY NHYODYNE PRINT MODULE):
+;
 ;  PORT 0 (INPUT/OUTPUT):
 ;
 ;	D7	D6	D5	D4	D3	D2	D1	D0
@@ -20,7 +23,7 @@
 ;
 ;	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):
@@ -30,16 +33,40 @@
 ;     | 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 (USED BY RCBUS MG014 MODULE):
+;
+;  PORT 0 (INPUT/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 (INPUT/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 +163,26 @@ 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_IBM)
+	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_IBM)
+	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 +196,16 @@ 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_IBM)
+	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 +220,40 @@ 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_IBM)
+;
+	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 +275,26 @@ 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_IBM)
+;
+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_IBM		; RETURN CHIP TYPE
 	RET				; DONE
 ;
 LPT_DETECT2:
@@ -253,6 +322,43 @@ 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	$A5			; CHECK FOR TEST VALUE
+	JR	Z,LPT_DETECT1		; FOUND IT
+	LD	A,LPTMODE_NONE		; NOT FOUND
+	RET
+;
+LPT_DETECT1:
+	; LPT FOUND, RECORD IT
+	LD	A,LPTMODE_MG014		; RETURN CHIP TYPE
+	RET				; DONE
+#ENDIF
+;
 ;
 ;
 LPT_PRTCFG:
@@ -291,9 +397,11 @@ LPT_PRTCFG:
 LPT_TYPE_MAP:
 		.DW	LPT_STR_NONE
 		.DW	LPT_STR_IBM
+		.DW	LPT_STR_MG014
 ;
 LPT_STR_NONE	.DB	"<NOT PRESENT>$"
 LPT_STR_IBM	.DB	"IBM$"
+LPT_STR_MG014	.DB	"MG014$"
 ;
 ; WORKING VARIABLES
 ;

Source/HBIOS/romldr.asm

@@ -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 +242,12 @@ 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_IBM	.EQU	1		; IBM STYLE INTERFACE
+LPTMODE_MG014	.EQU	2		; RCBUS MG014 STYLE INTERFACE
+;
 ; GDC MONITOR SELECTIONS
 ;
 GDCMON_NONE	.EQU	0
@@ -257,6 +263,12 @@ 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

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.7"
+#DEFINE BIOSVER	"3.3.0-dev.14"
 #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.7"
+	db	"3.3.0-dev.14"
 	endm