First post, by quicknick
- Rank
- Oldbie
Hi folks,
Got this mistery board that has an odd expansion slot (OPTi local bus, maybe?); it does't want to POST no matter what I tried. Diagnostic card displays only dashes, no beep from the speaker.
- Modded the Dallas chip, CPU gets hot, tried three processors (all Intel, DX and SX/33, DX2/66), known good RAM (and no RAM).
- Reflowed the SiS 85C360 chipset to be sure there's no broken solder joint.
- Tried another keyboard controller, another (un-modded) Dallas chip, tried a BIOS from another SiS 471 board.
- Oscillators on the board are working, even replaced the 66MHz with a 50MHz one for testing, no change.
- Cache sockets were populated when I got the board, I removed the chips to make sure they are good; tested OK on my TL866 but I'm not putting them back until I get the board going.
Scoured the net for another BIOS for this SiS 360 chipset, couldn't find any. Same for the chipset datasheet.
There's this string to be found inside the BIOS image, based on which the board seems to be manufactured by Flexus (never heard of them):
40-0000-001470-00101111-060692-SIS3486
As usual, looking for any advice or suggestion.
Here's the BIOS if someone is interested: