It's old Pentium motherboard day today 😀
Four beautiful boards, three working perfectly and the other is starting POST, so still hope there too.
First off one I received a few weeks ago but hadn't gotten round to doing anything with (busy November/December...):
UMC UM889x chipset So5. Years back I tested two boards with this chipset and they were the slowest Pentium boards I ever handled. However others have had different experiences. Time for a re-trial (once I add some cache).
Then the mystery board:
PIP56-0. Only found chemical resistant gloves so far searching for that...
ALi M1451 chipset So4. Starts POST, but hangs at 13 (with an AMI PENTIUM PCI ISA BIOS), which sounds like low-level chipset stuff.
Finally the real catch:
Spring Circle SF586
Forex FRX58C601A chipset, PCI, ISA and VLB So5. Very unusual board - most VLB Pentium boards are OPTi-based, I hadn't even heard of any Forex Pentium chipsets until fellow Vogon Nvm1 posted in this topic with this board almost 2 years back. Now, thanks to sf78, who also has one, I have not one but two. And they are both in excellent working condition. I'll open a topic on them, as apart from a BIOS online there's no info on jumper settings that I've been able to find. Fortunately I have been able to work some things out already (all eight FSB speeds from 16.7-80MHz for one), so we can share there. But first that barrel battery needs to go.