Trident CyberBladeXP4 status?
Jason L Tibbitts III
tibbs at math.uh.edu
Tue May 10 13:03:19 PDT 2005
>>>>> "AD" == Alex Deucher <alexdeucher at gmail.com> writes:
AD> it looks to be some sort of stride register since
AD> pScrn->displaywidth is being written to it.
I think it's setting the clipping window. The other write to 0x2150
writes the same thing, but 0x2150 is the "texture function". I think
there's a typo, because 0x2158 is another clipping window with the
same layout. I made that change and commented out the write to the
mystery 0x2126 register (which is half way through a 32-bit register
that only has the lower byte defined). It works and looks fine but if
I add acceleration functions it dies in the blitter.
Anyway, there's little point in giving a blow-by-blow of my bumbling
in the dark; unless someone wants to read it, I'll be quiet now unless
I have something useful to report.
- J<
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