Setting up a VAXstation

Yes, quite likely. For such machines this argument does not apply; that's why I specifically mentioned that most of the on-topic hardware I have and run (and was addressing your puzzlement with respect to) was SBus-era Suns. Perhaps even them, though probably not with a freeware emulator. (I'd expect it to have to do some kind of JIT compilation to native machine code to run at anything approaching full speed, and that's a but much to ask of a freeware emulator.) No, not yet. When I saw the stuck-at fault, I shelved that project, and haven't picked it up again even to the extent necessary to go looking for schematics. (Especially since it was working when I started, which means I quite likely blew it myself - perhaps I shorted a pin to a power rail by mistake or something.) When I do get back to that project, if I have further trouble, I'm sure I'll mention it here. :-) /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B