diff --git a/Source/HBIOS/Config/RCZ80_std.asm b/Source/HBIOS/Config/RCZ80_std.asm
index c533cd36..de027501 100644
--- a/Source/HBIOS/Config/RCZ80_std.asm
+++ b/Source/HBIOS/Config/RCZ80_std.asm
@@ -36,8 +36,9 @@ SIOENABLE	.SET	TRUE		; SIO: ENABLE ZILOG SIO SERIAL DRIVER (SIO.ASM)
 ;
 TMSENABLE	.SET	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
 TMSTIMENABLE	.SET	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
-TMSMODE         .SET    TMSMODE_MSX9958	; TMS: DRIVER MODE: TMSMODE_[RC/MSX9958]
+TMSMODE		.SET	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
 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
 ;
 AY38910ENABLE	.SET	TRUE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 ;
diff --git a/Source/HBIOS/ansi.asm b/Source/HBIOS/ansi.asm
index 4b4612c1..a761542d 100644
--- a/Source/HBIOS/ansi.asm
+++ b/Source/HBIOS/ansi.asm
@@ -114,6 +114,10 @@ ANSI_FNTBL:
 ;
 ANSI_IN:	; HANDLE INPUT REQUEST
 ;
+#IF (VDAEMU_SERKBD != $FF)
+	LD	C,VDAEMU_SERKBD
+	JP	CIO_DISPATCH
+#ELSE
 	; RETURN QUEUED DATA IF WE HAVE ANY
 	LD	A,(ANSI_QLEN)	; GET THE CURRENT QUEUE LENGTH
 	OR	A		; SET FLAGS
@@ -140,6 +144,7 @@ ANSI_IN1:	; PERFORM ACTUAL KEYBOARD INPUT
 ANSI_IN2:	; HANDLE SPECIAL KEY
 	CALL	ANSI_KDISP	; IF $80 OR HIGHER, DISPATCH
 	JR	ANSI_IN		; AND LOOP
+#ENDIF
 ;
 ; WRITE A CHARACTER W/ EMULATION
 ;
@@ -166,6 +171,11 @@ ANSI_OUT2:	; SET RESULT AND RETURN
 ; CHECK INPUT STATUS
 ;
 ANSI_IST:	; CHECK QUEUE FIRST
+;
+#IF (VDAEMU_SERKBD != $FF)
+	LD	C,VDAEMU_SERKBD
+	JP	CIO_DISPATCH
+#ELSE
 	LD	A,(ANSI_QLEN)	; GET CURRENT QUEUE LENGTH
 	OR	A		; SET FLAGS
 	RET	NZ		; RETURN IF CHAR(S) WAITING
@@ -196,6 +206,7 @@ ANSI_IST:	; CHECK QUEUE FIRST
 ANSI_IST1:	; HANDLE SPECIAL KEY
 	CALL	ANSI_KDISP	; DO SPECIAL KEY HANDLING
 	JR	ANSI_IST	; REPEAT
+#ENDIF
 ;
 ; CHECK OUTPUT STATUS
 ;
diff --git a/Source/HBIOS/cfg_dyno.asm b/Source/HBIOS/cfg_dyno.asm
index fb5cb3c0..06209dbc 100644
--- a/Source/HBIOS/cfg_dyno.asm
+++ b/Source/HBIOS/cfg_dyno.asm
@@ -78,6 +78,7 @@ DSKYENABLE	.EQU	FALSE		; ENABLES DSKY (DO NOT COMBINE WITH PPIDE)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
 MKYENABLE	.EQU	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
 ;
@@ -124,7 +125,7 @@ VDUENABLE	.EQU	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
 CVDUENABLE	.EQU	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 ;
diff --git a/Source/HBIOS/cfg_ezz80.asm b/Source/HBIOS/cfg_ezz80.asm
index 28fea35d..e725d028 100644
--- a/Source/HBIOS/cfg_ezz80.asm
+++ b/Source/HBIOS/cfg_ezz80.asm
@@ -79,6 +79,7 @@ DSKYENABLE	.EQU	FALSE		; ENABLES DSKY (DO NOT COMBINE WITH PPIDE)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -161,7 +162,7 @@ VDUENABLE	.EQU	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
 CVDUENABLE	.EQU	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 ;
diff --git a/Source/HBIOS/cfg_master.asm b/Source/HBIOS/cfg_master.asm
index 968a488f..16e25df5 100644
--- a/Source/HBIOS/cfg_master.asm
+++ b/Source/HBIOS/cfg_master.asm
@@ -113,6 +113,7 @@ DSKYOSC		.EQU	3000000		; OSCILLATOR FREQ FOR DSKYNG (IN HZ)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -221,7 +222,7 @@ GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 GDCMODE		.EQU	GDCMODE_RPH	; GDC: GDC MODE: GDCMODE_[NONE|ECB|RPH]
 GDCMON		.EQU	GDCMON_EGA      ; GDC: GDC MONITOR SETUP: GDCMON_[NONE|CGA|EGA]
 TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 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]
diff --git a/Source/HBIOS/cfg_mbc.asm b/Source/HBIOS/cfg_mbc.asm
index 2820b8fb..ac19b215 100644
--- a/Source/HBIOS/cfg_mbc.asm
+++ b/Source/HBIOS/cfg_mbc.asm
@@ -78,6 +78,7 @@ DSKYOSC		.EQU	3000000		; OSCILLATOR FREQ FOR DSKYNG (IN HZ)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -149,7 +150,7 @@ CVDUMODE	.EQU	CVDUMODE_MBC	; CVDU: CVDU MODE: CVDUMODE_[NONE|ECB|MBC]
 CVDUMON		.EQU	CVDUMON_CGA	; CVDU: CVDU MONITOR SETUP: CVDUMON_[NONE|CGA|EGA]
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 TMSENABLE	.EQU	TRUE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_MBC	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_MBC	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 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]
diff --git a/Source/HBIOS/cfg_mk4.asm b/Source/HBIOS/cfg_mk4.asm
index 555b40b7..29d5493b 100644
--- a/Source/HBIOS/cfg_mk4.asm
+++ b/Source/HBIOS/cfg_mk4.asm
@@ -84,6 +84,7 @@ DSKYOSC		.EQU	3000000		; OSCILLATOR FREQ FOR DSKYNG (IN HZ)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -149,7 +150,7 @@ CVDUMODE	.EQU	CVDUMODE_ECB	; CVDU: CVDU MODE: CVDUMODE_[NONE|ECB|MBC]
 CVDUMON		.EQU	CVDUMON_EGA	; CVDU: CVDU MONITOR SETUP: CVDUMON_[NONE|CGA|EGA]
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_SCG	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_SCG	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 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]
diff --git a/Source/HBIOS/cfg_n8.asm b/Source/HBIOS/cfg_n8.asm
index 2653c052..bdd5f0d0 100644
--- a/Source/HBIOS/cfg_n8.asm
+++ b/Source/HBIOS/cfg_n8.asm
@@ -86,6 +86,7 @@ DSKYOSC		.EQU	3000000		; OSCILLATOR FREQ FOR DSKYNG (IN HZ)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -151,7 +152,7 @@ CVDUMODE	.EQU	CVDUMODE_ECB	; CVDU: CVDU MODE: CVDUMODE_[NONE|ECB|MBC]
 CVDUMON		.EQU	CVDUMON_EGA	; CVDU: CVDU MONITOR SETUP: CVDUMON_[NONE|CGA|EGA]
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 TMSENABLE	.EQU	TRUE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_N8	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_N8	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 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]
diff --git a/Source/HBIOS/cfg_rcz180.asm b/Source/HBIOS/cfg_rcz180.asm
index 8e87167c..520e47c2 100644
--- a/Source/HBIOS/cfg_rcz180.asm
+++ b/Source/HBIOS/cfg_rcz180.asm
@@ -81,6 +81,7 @@ DSKYENABLE	.EQU	FALSE		; ENABLES DSKY (DO NOT COMBINE WITH PPIDE)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -168,7 +169,7 @@ VDUENABLE	.EQU	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
 CVDUENABLE	.EQU	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 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]
+TMSMODE		.EQU	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 ;
diff --git a/Source/HBIOS/cfg_rcz280.asm b/Source/HBIOS/cfg_rcz280.asm
index 9501676b..05a8ce34 100644
--- a/Source/HBIOS/cfg_rcz280.asm
+++ b/Source/HBIOS/cfg_rcz280.asm
@@ -86,6 +86,7 @@ DSKYENABLE	.EQU	FALSE		; ENABLES DSKY (DO NOT COMBINE WITH PPIDE)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -183,7 +184,7 @@ VDUENABLE	.EQU	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
 CVDUENABLE	.EQU	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 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]
+TMSMODE		.EQU	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 ;
diff --git a/Source/HBIOS/cfg_rcz80.asm b/Source/HBIOS/cfg_rcz80.asm
index b85d6df7..bc61bedb 100644
--- a/Source/HBIOS/cfg_rcz80.asm
+++ b/Source/HBIOS/cfg_rcz80.asm
@@ -80,6 +80,7 @@ DSKYENABLE	.EQU	FALSE		; ENABLES DSKY (DO NOT COMBINE WITH PPIDE)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -172,7 +173,7 @@ VDUENABLE	.EQU	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
 CVDUENABLE	.EQU	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 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]
+TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 ;
diff --git a/Source/HBIOS/cfg_rph.asm b/Source/HBIOS/cfg_rph.asm
index 5010d8a5..65dbd5b8 100644
--- a/Source/HBIOS/cfg_rph.asm
+++ b/Source/HBIOS/cfg_rph.asm
@@ -84,6 +84,7 @@ DSKYOSC		.EQU	3000000		; OSCILLATOR FREQ FOR DSKYNG (IN HZ)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -151,7 +152,7 @@ GDCENABLE	.EQU	TRUE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 GDCMODE		.EQU	GDCMODE_RPH	; GDC: GDC MODE: GDCMODE_[NONE|ECB|RPH]
 GDCMON		.EQU	GDCMON_EGA      ; GDC: GDC MONITOR SETUP: GDCMON_[NONE|CGA|EGA]
 TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_N8	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_N8	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 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]
diff --git a/Source/HBIOS/cfg_sbc.asm b/Source/HBIOS/cfg_sbc.asm
index 48c1de7a..37d80781 100644
--- a/Source/HBIOS/cfg_sbc.asm
+++ b/Source/HBIOS/cfg_sbc.asm
@@ -78,6 +78,7 @@ DSKYOSC		.EQU	3000000		; OSCILLATOR FREQ FOR DSKYNG (IN HZ)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -149,7 +150,7 @@ CVDUMODE	.EQU	CVDUMODE_ECB	; CVDU: CVDU MODE: CVDUMODE_[NONE|ECB|MBC]
 CVDUMON		.EQU	CVDUMON_EGA	; CVDU: CVDU MONITOR SETUP: CVDUMON_[NONE|CGA|EGA]
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_SCG	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_SCG	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 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]
diff --git a/Source/HBIOS/cfg_scz180.asm b/Source/HBIOS/cfg_scz180.asm
index 154cb8e4..cacb5e7a 100644
--- a/Source/HBIOS/cfg_scz180.asm
+++ b/Source/HBIOS/cfg_scz180.asm
@@ -76,6 +76,7 @@ DSKYENABLE	.EQU	FALSE		; ENABLES DSKY (DO NOT COMBINE WITH PPIDE)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
@@ -163,7 +164,7 @@ VDUENABLE	.EQU	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
 CVDUENABLE	.EQU	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 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]
+TMSMODE		.EQU	TMSMODE_MSX	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 ;
diff --git a/Source/HBIOS/cfg_zeta.asm b/Source/HBIOS/cfg_zeta.asm
index 09d3f31a..ba9642a7 100644
--- a/Source/HBIOS/cfg_zeta.asm
+++ b/Source/HBIOS/cfg_zeta.asm
@@ -70,6 +70,7 @@ DSKYOSC		.EQU	3000000		; OSCILLATOR FREQ FOR DSKYNG (IN HZ)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+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)
 MKYENABLE	.EQU	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
 ;
@@ -122,7 +123,7 @@ VDUENABLE	.EQU	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
 CVDUENABLE	.EQU	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 ;
diff --git a/Source/HBIOS/cfg_zeta2.asm b/Source/HBIOS/cfg_zeta2.asm
index 48c5532d..d5357338 100644
--- a/Source/HBIOS/cfg_zeta2.asm
+++ b/Source/HBIOS/cfg_zeta2.asm
@@ -81,6 +81,7 @@ DSKYOSC		.EQU	3000000		; OSCILLATOR FREQ FOR DSKYNG (IN HZ)
 BOOTCON		.EQU	0		; BOOT CONSOLE DEVICE
 CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
+VDAEMU_SERKBD	.EQU	$FF		; VDA EMULATION: SERIAL KBD UNIT #, OR $FF FOR HW KBD
 ANSITRACE	.EQU	1		; ANSI DRIVER TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 MKYENABLE	.EQU	FALSE		; MSX 5255 PPI KEYBOARD COMPATIBLE DRIVER (REQUIRES TMS VDA DRIVER)
 ;
@@ -133,7 +134,7 @@ VDUENABLE	.EQU	FALSE		; VDU: ENABLE VDU VIDEO/KBD DRIVER (VDU.ASM)
 CVDUENABLE	.EQU	FALSE		; CVDU: ENABLE CVDU VIDEO/KBD DRIVER (CVDU.ASM)
 GDCENABLE	.EQU	FALSE		; GDC: ENABLE 7220 GDC VIDEO/KBD DRIVER (GDC.ASM)
 TMSENABLE	.EQU	FALSE		; TMS: ENABLE TMS9918 VIDEO/KBD DRIVER (TMS.ASM)
-TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|RC|RCV9958|RCKBD]
+TMSMODE		.EQU	TMSMODE_NONE	; TMS: DRIVER MODE: TMSMODE_[SCG|N8|MBC|MSX|RCV9958|RCKBD]
 TMSTIMENABLE	.EQU	FALSE		; TMS: ENABLE TIMER INTERRUPTS (REQUIRES IM1)
 VGAENABLE	.EQU	FALSE		; VGA: ENABLE VGA VIDEO/KBD DRIVER (VGA.ASM)
 ;
diff --git a/Source/HBIOS/tms.asm b/Source/HBIOS/tms.asm
index e9c0255c..2dcc6253 100644
--- a/Source/HBIOS/tms.asm
+++ b/Source/HBIOS/tms.asm
@@ -153,7 +153,7 @@ TMS_INIT:
 	PRTS("N8$")
 #ENDIF
 #IF (TMSMODE == TMSMODE_MSX)
-	PRTS("RC$")
+	PRTS("MSX$")
 #ENDIF
 #IF (TMSMODE == TMSMODE_MSXKBD)
 	PRTS("RCKBD$")
diff --git a/Source/HBIOS/tty.asm b/Source/HBIOS/tty.asm
index 5c78e0e6..65d09a49 100644
--- a/Source/HBIOS/tty.asm
+++ b/Source/HBIOS/tty.asm
@@ -73,8 +73,13 @@ TTY_FNTBL:
 ;
 ;
 TTY_IN:
+#IF (VDAEMU_SERKBD != $FF)
+	LD	C,VDAEMU_SERKBD
+	JP	CIO_DISPATCH
+#ELSE
 	LD	B,BF_VDAKRD	; SET FUNCTION TO KEYBOARD READ
 	JP	TTY_VDADISP	; CHAIN TO VDA DISPATCHER
+#ENDIF
 ;
 ;
 ;
@@ -86,8 +91,13 @@ TTY_OUT:
 ;
 ;
 TTY_IST:
+#IF (VDAEMU_SERKBD != $FF)
+	LD	C,VDAEMU_SERKBD
+	JP	CIO_DISPATCH
+#ELSE
 	LD	B,BF_VDAKST	; SET FUNCTION TO KEYBOARD STATUS
 	JP	TTY_VDADISP	; CHAIN TO VDA DISPATCHER
+#ENDIF
 ;
 ;
 ;
diff --git a/Source/pSys/ReadMe.txt b/Source/pSys/ReadMe.txt
index 6c12b3af..c40a7d72 100644
--- a/Source/pSys/ReadMe.txt
+++ b/Source/pSys/ReadMe.txt
@@ -16,12 +16,12 @@ fill.asm       used to complete the track 0 build (see below)
 
 Notes:
 
-This adatation runs on a single RomWBWW HBIOS hard disk type device (CF 
-Cart, SD Card, IDE drive, etc.).  The image built (psys.img) should be 
-copied to your disk media start at the first sector.  You can then boot 
-by selecting the corresponding disk device unit number from the RomWBW 
-boot loader prompt.  The p-System disk image (psys.img) is entirely 
-different from the RomWBW CP/M-style disk images.
+This adaptation runs on a single RomWBW HBIOS hard disk type device (CF 
+Card, SD Card, IDE drive, etc.).  The image built (psys.img) should be 
+copied to your disk media starting at the first sector.  You can then 
+boot by selecting the corresponding disk device unit number from the 
+RomWBW boot loader prompt.  The p-System disk image (psys.img) is 
+entirely different from the RomWBW CP/M-style disk images.
 
 The boot device hard disk is broken up into 6 logical p-System 
 volumes.  These are referred to as p-System slices.  A single RomWBW 
@@ -91,4 +91,51 @@ There is currently no support for floppy drives.
 Wayne Warthen
 wwarthen@gmail.com
 
-5:42 PM Sunday, January 15, 2023
\ No newline at end of file
+5:42 PM Sunday, January 15, 2023
+
+So, it turns out that the serial line support in p-System is seriously 
+deficient.  It insists on polling all of the serial input devices 
+(console, remote, and printer) when the sytem is idle with the idea 
+that it will queue up any characters received.  I guess the idea is 
+that this will help in scenarios where characters are coming in too 
+fast to be processed. However, the basic/default interpreter does not 
+support the queues! Strangely, it still polls the the devices and 
+literally discards anything received.  This completely undermines the 
+ability of the underlying hardware which is doing it's own robust
+interrupt or hardware based buffering and flow control.
+
+I have relinked the interpreter (SYSTEM.INTERP) so that it now uses
+the BIOS version that supports the queues (BIOS.CRP).  This mostly
+resolves the situation, but needlessly increases the size of the
+interpreter.  Additionally, I believe that if the p-System queue gets
+full, it will still poll and discard any new characters received.  I
+have not seen any documentation indicating the size of the queues.
+
+Seriously, what were they thinking.
+
+One last thing in case anyone actually reads this.  As indicated
+above, this is an adaptation of p-System IV.0.  It is well documented
+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.
+
+3:58 PM Tuesday, January 17, 2023
+
+I forgot to discuss the terminal handling.
+
+The p-System has a setup program (SETUP.CODE) that is used to define
+terminal handling escape sequences.  However, it is limited to a
+single character to introduce the escape sequences.  Since ANSI
+and VT-100 escape sequences start with 2 characters, this is
+problematic.  The BIOS for RomWBW borrows a hack used by Udo Monk.
+Specifically, whenever an outbound <esc> is seen, a '[' is added
+in flight.
+
+Likewise, it is problematic to define a way to interpret the
+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
\ No newline at end of file
diff --git a/Source/pSys/psys.vol b/Source/pSys/psys.vol
index 63b726d8..358175d3 100644
Binary files a/Source/pSys/psys.vol and b/Source/pSys/psys.vol differ
diff --git a/Source/ver.inc b/Source/ver.inc
index 94b122d9..7da481e4 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	1
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.1.1-pre.193"
+#DEFINE BIOSVER	"3.1.1-pre.194"
diff --git a/Source/ver.lib b/Source/ver.lib
index d1aaa179..58903a71 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	1
 rup	equ	1
 rtp	equ	0
 biosver	macro
-	db	"3.1.1-pre.193"
+	db	"3.1.1-pre.194"
 	endm