Re: Source for 20Mhz. DIP-package Z80?

[Eric Rucker <bhtooefr@gmail.com>]

On Feb 9, 9:45 am, A2Pro <a...@wilserv.com> wrote:
> Hi!
>
> On Feb 9, 3:43 am, Alex wrote:
>
> > Now it's official. Put me into the Guiness book of world records.
> > My PCPI clone is happy to run at 20 MHz as advertised. No changes
> > needed, of course. Just a 20 MHz CPU and crystal.
> > Note that if a quartz crystal is used rather than a 3-pin ceramic
> > oscillator, you need to install 2 capacitors. 22 pF works for me.
>
>      A hardware idiot like me will need more detail on how to upgrade
> your card to 20 MHz.  Where exactly do the caps go?
>
> Willi

Looks like this page says what you need to know about that subject:
http://www.mirrow.com/FPGApple/Assembly.html