If you are trying to find a crystal for baud rate generation consider a
14.7456 MHz crystal.  It will give you 0% error on all standard baud rates.
I persume this is the crystal speed used in PC UART though haven't verified
this.  The use of a 19.6608MHz crystal for baud rate generation works well
for speeds under 115200kbps (which is as high as most people will go).

Donovan

> >I notice on the picdem.net board, a 19.6608MHz crystal is used.
>
> >What's the significance of this particular frequency?  It's readily
> >available from stockists.
>
> Often used for baud rate generation. It will divide nicely by powers of 2
to
> get the required frequencies.
>
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