Hand clocking CPUs
mcguire at neurotica.com
Wed Jul 21 16:30:14 CDT 2010
On 7/21/10 5:24 PM, Eric Smith wrote:
>> A single-stepping circuit for a Z80 is pretty simple.
> True, but it is not quite as simple as hooking up a debounced pushbutton
> to the clock, which was how I interpreted the OP's question.
Yes, I suppose you're right. It's much nicer (IMO) to do the full
trick by asserting /WAIT with /M1, a flip-flop, AND a debounced
pushbutton, though. Then you get true instruction stepping, rather than
Port Charlotte, FL
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