Final Video Hardware Reset Changes

- Modified TMS driver to always imbed an uncompressed font.  This is because I have found no reasonable way to decompress a font while an OS is still active without mangling some of the OSes RAM.

Source/HBIOS/Config/DUO_std.asm

@@ -38,10 +38,11 @@ BATCOND		.SET	TRUE		; ENABLE LOW BATTERY WARNING MESSAGE
 ROMSIZE		.SET	512		; SIZE OF ROM IN KB (MUST MATCH YOUR HARDWARE!!!)
 RAMSIZE		.SET	512		; SIZE OF RAM IN KB (MUST MATCH YOUR HARDWARE!!!)
 ;
-PCFENABLE	.SET	TRUE		; ENABLE PCF8584 I2C CONTROLLER
+PCFENABLE	.SET	FALSE		; ENABLE PCF8584 I2C CONTROLLER
 ;
 MDFFENABLE	.SET	FALSE		; MD: ENABLE FLASH FILE SYSTEM
 ;
 UARTINTS	.SET	FALSE		; UART: INCLUDE INTERRUPT SUPPORT UNDER IM1/2/3
 ;
+CHENABLE	.SET	TRUE		; CH: ENABLE CH375/376 USB SUPPORT
 ESPENABLE	.SET	TRUE 		; ESP: ENABLE ESP32 IO BOARD DRIVER (ESP.ASM)

Source/HBIOS/cfg_duo.asm

@@ -237,7 +237,7 @@ SDTRACE		.EQU	1		; SD: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 SDCSIOFAST	.EQU	FALSE		; SD: ENABLE TABLE-DRIVEN BIT INVERTER IN CSIO MODE
 SDMTSWAP	.EQU	TRUE		; SD: SWAP THE LOGICAL ORDER OF THE SPI PORTS OF THE MT011
 ;
-CHENABLE	.EQU	TRUE		; CH: ENABLE CH375/376 USB SUPPORT
+CHENABLE	.EQU	FALSE		; CH: ENABLE CH375/376 USB SUPPORT
 CHTRACE		.EQU	1		; CH: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 CHUSBTRACE	.EQU	1		; CHUSB: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 CHSDTRACE	.EQU	1		; CHSD: TRACE LEVEL (0=NO,1=ERRORS,2=ALL)

Source/HBIOS/hbios.asm

@@ -6544,7 +6544,10 @@ ORG_FONTS	.EQU	$
 ;
 #IFDEF USEFONT8X8
 FONT8X8:
-  #IF USELZSA2
+;
+; FOR NOW, WE NEVER COMPRESS THE 8X8 FONT.  SEE TMS DRIVER.
+;
+  #IF USELZSA2 & FALSE
     #INCLUDE "font8x8c.asm"
   #ELSE
     #INCLUDE "font8x8u.asm"
@@ -8044,7 +8047,7 @@ SLACK		.EQU	BNKTOP - $
 ;
 ; DIAGNOSE HBIOS BANK OVERFLOW
 ;
-#IF (SLACK<0)
+#IF (SLACK < 0)
 		.ECHO	"*** ERROR: HBIOS too big!!!\n"
 		!!!	; FORCE AN ASSEMBLY ERROR
 #ENDIF
@@ -8059,6 +8062,11 @@ SLACK		.EQU	BNKTOP - $
 		!!!	; FORCE AN ASSEMBLY ERROR
 #ENDIF
 ;
+;;;#IF (SLACK < (1024 * 3))	
+;;;		.ECHO	"*** ERROR: Low HEAP space!!!\n"
+;;;		!!!	; FORCE AN ASSEMBLY ERROR
+;;;#ENDIF
+;
 #IFDEF ROMBOOT
   #IF (ROMSIZE > 0)
 		.FILL	SLACK

Source/HBIOS/tms.asm

@@ -352,15 +352,11 @@ TMS_VDARES:
 	CALL	TMS_Z180IO
 #ENDIF
 	CALL	TMS_CRTINIT1A
-#IF (!USELZSA2)
-	; WE WANT TO RELOAD THE FONT ON RESET, BUT THIS IS NOT CURRENTLY
-	; POSSIBLE WHEN FONT COMPRESSION IS IN USE.
 	CALL	TMS_CLRCUR		; CLEAR CURSOR
 	CALL	TMS_LOADFONT		; RELOAD FONT
 	LD	A,$FF			; REMOVE
 	LD	(TMS_CURSAV),A		; ... SAVED CURSOR CHAR
 	CALL	TMS_SETCUR		; RESTORE CURSOR
-#ENDIF
 	XOR	A
 	RET
 
@@ -672,8 +668,15 @@ TMS_LOADFONT:
 	; SET WRITE ADDRESS TO TMS_FNTVADDR
 	LD	HL,TMS_FNTVADDR
 	CALL	TMS_WR
-
-#IF USELZSA2
+;
+; THE USE OF COMPRESSED FONT STORAGE FOR THE TMS DRIVER IS DISABLED
+; SO THAT WE CAN RELOAD THE FONT DATA ON USER RESET.  THE TMS CHIP
+; IS FREQUENTLY REPROGRAMMED BY GAMES, ETC., SO IT IS NECESSARY TO
+; REINIT AND RELOAD FONTS.  RELOADING A COMPRESSED FONT AFTER
+; SYSTEM INITIALIZATION REQUIRES A LARGE DECOMPRESSION BUFFER THAT WE
+; HAVE NO WAY TO ACCOMMODATE WITHOUT TRASHING OS/APP MEMORY.
+;
+#IF USELZSA2 & FALSE
 	LD	(TMS_STACK),SP		; SAVE STACK
 	LD	HL,(TMS_STACK)		; AND SHIFT IT
 	LD	DE,$2000		; DOWN 4KB TO
@@ -701,7 +704,7 @@ TMS_LOADFONT1:
 	OR	E
 	JR	NZ,TMS_LOADFONT1
 ;
-#IF USELZSA2
+#IF USELZSA2 & FALSE
 	LD	HL,(TMS_STACK)		; ERASE DECOMPRESS BUFFER
 	LD	SP,HL			; BY RESTORING THE STACK
 	RET				; DONE

Source/HBIOS/vga.asm

@@ -546,7 +546,7 @@ VGA_LOADFONT:
 	LD	HL,$7000 | VGA_89BIT	; CLEAR FONT PAGE NUM
 	CALL	VGA_SETCFG
 
-#IF USELZSA2
+#IF USELZSA2 & (VGASIZ != V80X60)
 	LD	(VGA_STACK),SP		; SAVE STACK
 	LD	HL,(VGA_STACK)		; AND SHIFT IT
 	LD	DE,$2000		; DOWN 4KB TO
@@ -583,7 +583,7 @@ VGA_LOADFONT2:
 	LD	HL,$7070 | VGA_89BIT	; SET FONT PAGE NUM TO 7
 	CALL	VGA_SETCFG
 
-#IF USELZSA2
+#IF USELZSA2 & (VGASIZ != V80X60)
 	LD	HL,(VGA_STACK)		; ERASE DECOMPRESS BUFFER
 	LD	SP,HL			; BY RESTORING THE STACK
 	RET				; DONE

Source/ver.inc

@@ -2,7 +2,7 @@
 #DEFINE	RMN	5
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.5.0-dev.26"
+#DEFINE BIOSVER	"3.5.0-dev.27"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP

Source/ver.lib

@@ -3,5 +3,5 @@ rmn	equ	5
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.5.0-dev.26"
+	db	"3.5.0-dev.27"
 	endm