On 2 Jul 2012 at 13:34, Dave McGuire wrote:
I haven't gone and checked, but I do recall
pretty clearly that they
specify a 330 ohm pullup on the clock line of a Z80, not 10K.
I was going by the Z80 app note that shows the discrete totem pole
output followed by a resistor that has the notation "10K (max)". I
haven't checked the date of publication--the notation on the
schematic might have been made by an oil company executive...
--Chuck