Qbcd wrote on 2020-06-18, 23:27:
Can someone please elaborate on why any PCI card, even a GT 610, wouldn't boot in a 486 board? Is the issue with the newer PCI spec that isn't supported by the chipset? Do we know exactly what's causing an issue with newer cards, so we can determine the fastest possible card for each chipset w/o necessarily having to test everything.
I spent some time last winter with the PCI cards 486-PCI motherboards that I had available to see if there was a clear tell for what would work.
Cards: S3 Trio64V+ (1996) Tseng 4000w32p (1996) , Matrox Mystique PCI (1997) , Permedia 2 (1998), MX4000 (2003), Radeon 9250 (2004), Radeon x1300 (2005)
Mobos: FIC 486 VIP (Via82C505) & Gateway BAT4IP3 (420EX) Both 1994. Gateway has a power plug for extra PCI power.
The stuff from the 90's would work with the 486's, the stuff from the 00's didn't stop the computers from booting, but wouldn't generate a VGA signal.