21 Apr
2016
21 Apr
'16
12:03 p.m.
I do know that the Wait signal was used by the Fluke 90 tester so it could be clamped on
top of an in circuit Z80 and run memory and I/O tests while the CPU was doing its regular
operations.
On vacation so haven't easy access to the operators manual for the Fluke 90 though...
John :-#)#
On Apr 21, 2016, at 1:36 PM, Eric Smith <spacewar
at gmail.com> wrote:
A friend building a Z80 system asked me about whether the Z80 /WAIT
signal has any effect during machine cycles that aren't
memory/IO/intack cycles (i.e., neither /MREQ and /IORQ asserted). The
user manual only describes the use of /WAIT for adding wait states, so
I expect it probably only affects mem/IO/intack cycles, but I can't
find anything definitive in the user manual.
I'm hoping someone can save me the time of hooking up a logic analyzer
and running the experiment.
Thanks!
Eric