Reply 36100 of 56687, by NautilusComputer
Picked these two boards up with CPUs and RAM. Both are seemingly unique/rare/odd/unknown as far as I can tell.
ASUS ISA-486SV2 rev. 3.1. Can't find any other pictures of this model in revision 3.1 with VLB *and* a blue OverDrive socket (there's no number on the socket). Nasty little Varta was clipped off; there is some leakage/corrosion but VERY minimal. 256KB cache installed. Came with 486DX2-50. I think I found jumper settings online but most things seem to be for the G/GX/GV (or whatever) boards.
Softek 5HXA. This guy is even weirder. Seems to have 430HX chipset (no USB, bummer). PS/2 mouse header. 256KB cache on board (I think pipelined burst, even?) with COASt socket for additional cache. I think if you put in 256KB you get 512KB, but if you put in 512KB it disables the onboard and uses the module only (never heard of 768KB of cache...). Not sure if the tag chip on the board is big enough to cache 512MB of RAM (430HX is supposed to be able to cache up to 512MB), but it's socketed so that's good? There's a 'hard-bridged' jumper on the board with labels for P54C and P55C that is soldered to P54C. Right next to it is an unpopulated area that looks like it would get filled with VRM components for the split-plane P55C voltages. ZERO information about this board online. Not sure if the southbridge is PIIX3 or not, the serial number sticker is on that chip. This might have been a replacement board; the seller said it arrived at the recycler he works for as a whitebox and amazingly enough had a 'shadow layout' diagram with jumper info on it in the box. I think Softek was the hardware division of Soltek, but that's all I can even MAYBE find online about it.
If anyone can fill in the holes in what I know of these boards or point me to manuals, that'd be awesome!