kinetix wrote on 2025-05-03, 03:05:
I got six motherboards for cheap. Two are liquidated, because one is missing a pair of pal and another has the vram chips torn and a cache chip burst by an internal short-circuit. Also, all the cache chips that were in sockets are also missing. Hope those ones works without cache, as I have some chips but not the necessary amount nor all types.
From 4 of them I already sent better images to theretroweb, and from 2 the bios. With one of them a new entry was created on the web, as "[Unknown] OPTI 386-16".
I have started restoring this 386. It is slightly damaged by the battery (easy compared to the one I restored before in which some lines had already disappeared eaten away). this and a MiTAC/Trigon PWA-PB5500C are the ones that interests me the most.
Interesting stuff...
Very early socket 5 board, unusually to see one with an oscillator instead of PLL. You might need an early stepping P90 to get that going as it might not understand the later multiplier standards.
LPX 4a board looks like IBM microelectronics had something to do with it, by it's grid markings. Extra power connector might be a drive pigtail takeoff rather than input, unsure.
LPXish 3a is marked Dell, so proceed with caution in assuming the PSU connector is standard pinout.
Nice PCI/VLB board, seems a bit Asus to me, due to style of markings.
386 could be an ECS... but NEC, AST, Packard Bell and others had those funky memory/expansion slots.
Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.