No dice. I didn't notice that one of the pins on the parity jumper is broken off. What's left isn't long enough to make a connection because it still doesn't work. I don't fell like soldering it if doesn't fix the problem. Maybe I'll do a wire wrap.

Anyway, I tried Lido and a patched Apple HD SC 7.5.3 utility. Both give me weird errors and fail to format. Maybe the drive is just toast.