> The CPU doesn't support PATs, sorry. > > It does have MTRR support though, wasn't there a patch to support > Write-combining for the framebuffer region using them instead? > > FWIW, native graphics applications (including Hyperglenda) are very fast...
if the slowdown is caused by reading the framebuffer, than the patch wouldn't help anyway. reading the frame buffer on certain nvidia cards (for example, mine) can be astoundingly slow. - erik
