I know this would basically be a useless feature, except for scientific curiousity. I think it could be interesting to some people to see first hand what sort of errors that old faulty CPUs would produce.
Emulators for other faulty platforms might be interesting too. Not like I’d expect any programmers out there to deliberately write faulty instructions though, except as stated, something of a scientific exercise.
Just curious honestly.
Of course I wouldn’t expect any emulator to run faulty instructions by default, but it seems to me that it would be an interesting option for digital historians to study, if for no other reason than shits and giggles…