> I don't know if it's specifically the PC or some other system using an 8088/8086, but > I seem to recall hearing about a system in MESS that's finicky because the hardware's > floppy controller can actually halt the CPU mid-instruction. For something like that, > you need to actually have per-cycle emulation rather than just instructions with > correct cycle counts.
Oh wow, fascinating stuff. I've never heard of a PC that does that - I guess it would have to be done by gating the CPU's clock line. That must have been a tricky circuit to get working in the first place, let alone to emulate!
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