It doesn't have the VRAM to do it. It only has 512Kb of VRAM. 640x480 is 300K pixels. To go to thousands of colors at 640x480 you need 600K of VRAM. To do 640x400 at thousands of colors you need just under 512Kb of VRAM so it dis do able.
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Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting
Its kind of a shame, in that once you transplant a 65225 video controller in the place of the 65220, it can read 1 meg of VRAM, but there is no good way to get the VRAM onto the board.
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