First post, by Baoran
Basic isa 386 motherboard. I know I probably can't fix it, but if someone who has more technical information on how motherboards work could explain me what could theoretically be wrong with a motherboard that would cause floppy drives not working with the motherboard.
Ram is fine, motherboard cache has been disabled. I/O controller is a separate isa card that has 1.44Mb floppy drive and 120Mb hard drive connected to it and the card has been tested with these same floppy drive and hard drive on another motherboard and they work fine. I moved the card with same things connected to it directly from one motherboard to another. Hard drive and the floppy drive are recognized during post. Hard drive works fine and boots and I can run anything on the hard drive and programs work in dos. Floppy drive doesn't work and either directory listing shows empty even if there are files on the disk or it shows random characters mixed with the directory listing. Sometimes there are also general and invalid media errors.
What could be theoretically be broken on the motherboard that could cause something like this when the FDD controller is on a separate working isa card?
