First post, by vstrakh
Got this board, it's not detected by bios.
Probing the power lines I see some suspiciously low resistance (88 Ohms, or 0.17v drop when measuring in diode testing mode).
It's not dead short, but still way too low. To avoid desoldering all tantalum capacitors I started with taking out all the socketed chips.
It turns out the dead IC is the PAL16L8 close to ISA connector, the one in row with 74LS244 buffers.
I think I would be able to replace it with modern GAL16V8 from Microchip, but I'd need the equations from the original chip. The original PAL is of L series, so just plain logic, no registers, and I think it would be relatively simple to probe the behavior of the original working chip. Or maybe I could reverse-engineer that piece if I had a schematics for that card.
Does anyone has this card and would it be possible to read/probe its content, or at least any hints on where to look for the board schematics?