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.

  • cheeseburger@lemmy.ca
    6·
    4 days ago

    This might be something PCem can do. LTT talked about it for emulating PC hardware (here) to install and play MS-DOS games accurately. I see someone in the PCem forum 10 years ago mentioning the recreation of FDIV bugs.

  • InverseParallax@lemmy.worldEnglish
    3·
    3 days ago

    Qemu, i386 target, not sure if they use TCG for that, they probably do, basically have a specific machine model that handles fdiv with a lookup table or something, honestly not sure how it went wrong.