Comment 35 for bug 1049630

I've installed (and since deinstalled) the modified bios, but it enabled me to do some testing. The system was unstable, and would freeze hard every 3-5 minutes or so when in either sideport-only or uma-only modes. However:
Graphics *seem* to work fine (either way, work much better) with things set either to Sideport only or UMA-only. Using sideport+uma caused massive corruption, as 'normal'.

Interestingly, although the BIOS states that there are 64mb of sideport ram, the system thinks I have 128mb when sideport-only is set in the bios.

This seems to correlate with d4ddio's observation:
> I see indications several places that theres only 64M of sideport VRAM, but 384 == 128 + 256