This is really weird. My IIGS worked fine up until a couple of months ago, when it suddenly decided to stop recognizing any i/o device other than 5.25" drives. It's definitely the computer; it recognizes both physical 5.25" drives and emulated 5.25" drives, but neither real nor emulated 3.5" or smartport hard drives. It does give them power, so I can eject disks, but it just won't attempt to read them and says no device is connected.
I've checked my slot assignments and they're all set to defaults. So slot 5 is the smartport. Doing a PR#5 from a prompt also gives me the "no device connected" error.
I thought I might have a dry solder joint on the connector itself, but I just remelted all of them tonight and there was no change.
I do have a spare motherboard but it has an even worse problem (keyboard connector is jammed up with something, I think part of a cable broke off in it) so I can't just swap it out. But I could easily swap any removable chips, or potentially unsolder something and solder it to the other board if I had to. I just don't even know what might be the culprit. I assume there's a smartport controller somewhere on the board, but I don't know what it is.
Thanks for any help.
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