512 MB VRAM:
I think you are wasting time with this issue, trying to downgrade cards/flashing bios, etc.. because, as you can see in my previuos posts in this thread, particularly the n.156
, I made my 512MB 6800 vga work with '98, but only on one motherboard out of three I tried.
To sum, I tried on :
- Asus P4B-533 (Intel ?815? chipset) with AGP 4X ----> OK, also with games (a few)
- Asus P4P-800-X (Intel 865) with AGP 8X -----> hangs at boot
- Biostar OEM (Via chipset with integrated graphic) and AGP 8x -----> hangs, but this kind of MoBo gave always problems with spare cards, even with an old 6600 128MB, that is officially supported by nvidia drivers.
So it IS possible to make 512MB cards work on W'98 without limiting RAM; in my opinion everything is up to the MoBo/chipset. Excluding the Via chipsets that are (in)famous for agp problems, in my experience it worked with an agp 4x while not with the 8x. I don't know if this is the key, but I hope someone of you can find a solution, 'cause I'm stuck like you and I'm looking for another 6800 (non-GS->officially supported) to exchange with mine.
Edited by 98er, 02 July 2008 - 09:38 AM.