Brian Gregory wrote:
>
> In-Reply-To: <4042F7084FCDD311834B00104BCA47700B86EE@MAIL2>
>
> John Orhan <JOrhan@EDM.COM.AU> wrote:
> > I have seen a circuit where a 4Mhz Z80 was clocked at 10Mhz with the
> > addition of a 10M parallel resistor across the Xtal. I don't know how/why
> > this would work but am dying to find out.
>
> This doesn't make sense.
>
> The 10M resistor can't have anything to do with the overclocking.
>
> For a start you don't connect a crystal directly to a Z80. It needs an
> external clock oscillator.

Hmmm... Quite correct. Now I am showing my age. But I remember going
through this 10Meg across the xtl thing to kick start the xtl
oscillations. Now where was it?

Don McKenzie    mailto:don@dontronics.com      http://www.dontronics.com

World's Largest Range of Atmel/AVR and  PICmicro Hardware and  Software.
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