Re: MTRR & NVTNT

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 11 Mar 1999 12:19:44 +0000 (GMT)

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> Of course, I agree, it apparently isn't aligned that way. Does this mean that
> one cannot use MTRR with the NVidia TNT boards? Looking on a Windows box with
> the same card it appears to break up the 16 megs of video RAM into
> non-contiguous blocks. I'm not even sure if the Windows drivers are making
> use of the MTRRs. Anyhow, just thought I'd throw out the question and see if
> anyone would be kind enough to clue me in. Thanks,

Find which is the frame buffer ram (that would be the big chunks). I guess
texture may be non contiguous and if need be use multiple mtrrs to map
the relevant bits

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