First post, by Deksor
Yesterday I bought this motherboard at a garage sale :
It works, but if I try to put a VLB video card, it won't POST at all. The POST card I'm using to check it doesn't show up any numbers when I put a VLB card. When I put a crappy Realtek ISA card, it works. It also seems to fail to POST at some point but that may just be the cache memory having errors or something like that. It seemed to be more stable when I deactivated it.
I tried to add waitstates but it didn't help. I tried a VLB io board. At first it didn't work, but after some cleaning it seemed to work (the floppy disk drive I pluged seeked but it couldn't read anything. I don't know if that drive or the cable is dead or if there is still some problems though) but I tried again many video cards and still nothing.
These video cards worked last time I checked them so I don't think they're dead
Any ideas ?
Also sometimes it displays incorrect ram size (64KB) and it says "incorrect CMOS memory, press F1 to continue" and then it displays "Onboard memory parity error" or something like that with adresses in hexadecimal.
The motherboard is this one :
http://stason.org/TULARC/pc/motherboards/U/UN … -486-VL486.html
Trying to identify old hardware ? Visit Ultimate Hardware 2019