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