First post, by AppleDash
I was given a VLB 486 motherboard by a friend, and wasn't told much else other than it "acted weird". I did some testing, and no matter what I do, as long as there is a valid memory configuration, it counts 3MB of RAM. It had no cache so I added some, and now it counts between 2 and 3MB of RAM at random. I haven't tested beyond this. The RAM is known good and so is the cache. What can I do to try and troubleshoot this? My first thought would be potentially bad capacitors? I'd love to get it working!
Main retro system: Am486 DX4 100MHz | 128K cache | 16MB RAM | VLB Mach32 | Sound Blaster 16 | HardMPU w/ MT-32 or SC-55 | MS-DOS 6.22; no Windows