1 Jul
2012
1 Jul
'12
9:37 a.m.
Chuck Guzis <cclist at sydex.com> wrote:
"The PHI signal is output from the Z80 clock
driver circuitry,
which is a schottky clamped circuit using a PNP-NPN transistor (push-
pull) pair to obtain the required current and waveform to drive the
Z80 devices. "
This sounds right, yeah
Probably very similar to the Z80 clock driver shown
here:
http://www.80bus.co.uk/pages/gemini/documentation/GM813_Circuit.pdf
Where exactly? Was not able to find it...