I was fiddling and I pulled the NPG from the Unibus ribbon cable and the
machine will boot now! But when I try starting RSTS timesharing (START
command to the bootloader [Is that INIT?]) it lists devices it disables
and hangs there. I can see an LED go high on the 2nd UDA board (The one
that doesn't connect to the drives), stay high for a second, then go lo,
strobe, and repeat. The READY lamp on the RA81 has died, so I can't
really tell what's happening... I'll go RTFM tonight, but if anyone knows
for sure what's happening, it'd be nice to know!