Rationalize Font Files

- Consolidated font files from 6 to 4 by eliminating redundant files.
- Use code page 437 for all fonts (except 8x11).

Source/Fonts/Build.cmd

@@ -8,7 +8,7 @@ set PATH=%TOOLS%\lzsa;%TOOLS%\fonttool;%PATH%
 echo.
 echo Preparing compressed font files...
 
-for %%f in (font6x8 font8x8 font8x11 font8x16 fontcga fontvgarc) do call :genfont %%f
+for %%f in (font6x8 font8x8 font8x11 font8x16) do call :genfont %%f
 
 goto :eof
 

Source/Fonts/Makefile

@@ -1,8 +1,8 @@
 OBJECTS = \
-	font6x8u.asm font8x8u.asm font8x11u.asm font8x16u.asm fontcgau.asm fontvgarcu.asm \
-	font6x8c.asm font8x8c.asm font8x11c.asm font8x16c.asm fontcgac.asm fontvgarcc.asm
+	font6x8u.asm font8x8u.asm font8x11u.asm font8x16u.asm \
+	font6x8c.asm font8x8c.asm font8x11c.asm font8x16c.asm
 
-OTHERS = font6x8c.bin font8x8c.bin font8x11c.bin font8x16c.bin fontcgac.bin fontvgarcc.bin
+OTHERS = font6x8c.bin font8x8c.bin font8x11c.bin font8x16c.bin
 
 TOOLS = ../../Tools
 
@@ -26,11 +26,5 @@ font8x11c.bin: font8x11u.bin
 font8x16c.bin: font8x16u.bin
 	$(BINDIR)/lzsa -f2 -r $< $@
 
-fontcgac.bin: fontcgau.bin
-	$(BINDIR)/lzsa -f2 -r $< $@
-
-fontvgarcc.bin: fontvgarcu.bin
-	$(BINDIR)/lzsa -f2 -r $< $@
-
 %.asm: %.bin
 	$(BINDIR)/bin2asm $< > $@

Source/Fonts/fonts.txt

@@ -1,12 +1,5 @@
 Font files for ROMWBW.
 
-8x8: 8x8 cell, mostly IBM CGA, first 16 differ, thin font
-8x11: 8x11 cell, possibly VT-100?
-8x16: 8x16 cell, IBM MDA
-CGA: 8x16 cell, IBM CGA, normal (thick) CGA font, rows 8-15 are unused padding
-
-There are multiple fonts associated with ROMWBW supported hardware:
-
 	Board		Driver		Chip
 	--------	--------	--------
 	ECB-SCG		tms.asm		9918
@@ -17,25 +10,31 @@ There are multiple fonts associated with ROMWBW supported hardware:
 	MBC-VDP		tms.asm		9938/9958
 	RCBUS-VRC	vrc.asm		PLD
 	RCBUS-TMS	tms.asm		99x8
-	XOSERA		xosera.asm	?
 
 Name		Glyph	Cell	Size	Comp	Board & Display Mode
 ------------------------------------------------------------------------------------------------
 font6x8		6x8	8x8	2048	1094	ECB-SCG, MBC-VDP
-font8x8		6x8	8x8	2048	1034	ECB-VGA3 (80x60)
+font8x8		6x8	8x8	2048	1259	ECB-CVDU (CGA), MBC-VDC (CGA), ECB-VGA3 (80x60)
 font8x11	8x11	8x11	2816	1252	ECB-VGA3 (80x43)
-font8x16	8x14	8x16	4096	1466	ECB-CVDU (EGA), ECB-VGA3 (80x24, 80x25, 80x30), MBC-VDC (EGA)
-fontcga		8x8	8x16	4096	1280	ECB-CVDU (CGA), MBC-VDC (CGA)
-fontvrc		8x8	8x8	1024	650	VGARC
+font8x16	8x14	8x16	4096	1466	ECB-CVDU (EGA), MBC-VDC (EGA), ECB-VGA3 (80x24, 80x25, 80x30)
 				-----	-----
-				16128	6776
+				11008	5071
 
 Notes:
 
-- The CGA font is roughly equivalent to the 8x8 font, but padded out to 8x16.  Scan lines
-  8-15 are unused.  The CVDU driver (8563 chip) always uses fonts defined in an 8x16 cell.
-  When the CVDU is configured for use with a CGA monitor, an 8x8 character cell is used,
-  but the font definition must still be 8x16.  The CGA font is used for this.
+- Compression of the 6x8 font is disabled because the TMS driver must
+  reload the font when CP/M is warm booted.  There is no memory area
+  where the decompression can safely be done at this point.
+
+- The 856x GDPs always use 16 bytes per font character.  The CVDU
+  driver inserts dummy bytes as needed to utilize the 8x8 font when
+  selected.
+
+- The 8x11 font is not typically used and only supported by one
+  board.  It is probably not worth the space of storing it and will
+  probably be eliminated in the future.
+
+- All fonts are in code page 437 except 8x11.
 
 For inclusion in HBIOS the .bin format files must be converted to assembler .asm format.
 This is achieved using the fonttool utility and is completed automatically as part of the build process.
@@ -68,7 +67,3 @@ Implementation example (older version):
  https://cpcrulez.fr/applications_tools_cruncher_LZSA2_Z80.htm
 x86 lzsa compressor application:
  http://www.pouet.net/prod.php?which=81573
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