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mx68010.txt
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1993-01-22
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939b
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38 lines
MX 68010 1MB, 1024x768x26colors
3C4h index A7h (W?): Enable extensions
bit 0-7 Writing 87h to this register enables the MXIC extensions,
writing 0 disables them.
3C4h index C2h (R/W):
bit 2-3 Video RAM installed: 0=256k, 1=512k, 2=1M
3C4h index C3h (R/W):
bit 7 Bus width?. 0=8 bit, 1=16 bit.
3C4h index C5h (R/W): Bank register
bit 0-3 Write bank in 64k blocks.
4-7 Read bank in 64k blocks
Test for MXIC chip:
wrinx($3C4,$A7,0); {Disable extensions}
if not testinx($3C4,$c5) then
begin
wrinx($3C4,$a7,$87);
if testinx($3C4,$c5) then MXIC!!!;
end;
Video modes:
50h T 132 25 16 (8x16)
51h T 132 30 16 (8x16)
55h G 800 600 16 planar
56h G 1024 768 16 planar
57h G 640 350 256 packed
58h G 640 400 256 packed
59h G 640 480 256 packed
5Ah G 800 600 256 packed
5Bh G 1024 768 256 packed