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74 lines
2.7 KiB
74 lines
2.7 KiB
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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ECB-VDU vdu.asm 6545
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ECB-CVDU cvdu.asm 8563
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ECB-VGA3 vga.asm 6445
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MBC-VDC cvdu.asm 8568
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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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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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----- -----
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16128 6776
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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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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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i.e. fonts files are converted to .asm format and then copied to the HBIOS directory.
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To replace a font, simply copy it to the Fonts directory using the same naming convention above,
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ensuring format and size match. Then complete a new build process.
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To reduce the size of the HBIOS image, fonts can be compressed by using the USEZLSA2 equate.
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Use the following in your custom configuration to turn on font compression:
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USELZSA2 .SET TRUE
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Compressed fonts are created using lzsa utility.
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During the build process, fonts are compressed using the command line compressor by Emmanuel Marty
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The compression is done as follows:
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lzsa.exe -f2 -r <sourcefile> <outfile>
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where option -f2 selects lzsa version 2 compression.
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where option -r asks for the generation of raw (frame-less) data.
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Original compression source code and files available here:
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Latest github code:
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https://github.com/emmanuel-marty/lzsa
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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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