Re: Executive 64 two crystals??

From: Ruud Baltissen (ruud.Baltissen_at_abp.nl)
Date: 2001-04-02 08:04:15

> WHat I don't understand is why there are two crystals on this little
board.
> The top one is the normal ntsc 14mhz crystal, and the bottom one is
> obscured, soldered to the top crystal such that it cant be seen.
>
> anyone have any clues? :)

It seems that I still have mail problems; now my mail from home does not
appear on the list


I have a 17.733 MHz on top because it's a PAL machine. The second one is a
7.8819 MHz.
(17.733 / 18) * 8 = 7.8817
It seems that the second crystal takes care of the DOT-clock.

Groetjes, Ruud

http://Ruud.C64.org/


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