On Fri, Apr 22, 2016 at 12:26 PM, Eric Smith wrote:
> I thought at one point I saw Zilog or Mostek Z80 documentation
> that gave the specific details of every M cycle of every instruction,
> but I can find such a thing at the moment. :-(
Found it. Section 12.0 of the Mostek MK3880 Central Proces
On Fri, Apr 22, 2016 at 3:15 AM, Alexis Kotlowy
wrote:
> http://kaput.homeunix.org/~thrashbarg/z80.pdf
>
> Looking at this Z80 datasheet (page 20 of the PDF) the timing diagrams
> say the /WAIT signal is sampled on the falling edge of clock state T2.
> If it is active, additional cycles are introd
On 22/04/2016 3:06 AM, Eric Smith 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 st
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
On 04/21/2016 12:36 PM, Eric Smith 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 s
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
