Hello again,
It's been a while since I updated this thread. I've decided to pick up this project again but I'm still stuck in the same place I was in September. That is, the machine bombs if I try to shut down, restart, or press the interrupt button. No floppy port is functioning either, including external. It's possible that back when I was testing voltages out of the floppy connector, I touched the data and power leads together with my probe. Is my SWIM perhaps damaged, and more importantly, is this recoverable? Also, any ideas on the wrong voltages appearing on the board?
At this point I've put so much time and money into reviving the machine that I don't want to give up on it, but the issues may have exceeded my skill level at this point.
Thanks.