11/23 clock issue

[Tothwolf]

On Fri, 6 Feb 2015, Noel Chiappa wrote:

>    > From: Brent Hilpert
>
>    >> Well, try removing W1 to isolate the output of the xtal oscillator E15
>    >> from inverter input pin E4.4.
>
> Sigh, the crystal output is dead as a doornail. Total flat-line. Guess I'm
> going to have to find a new one...

Does it have to be exactly 13MHz for the system to function correctly? I 
have some Fox brand 13.824MHz oscillators in my parts cabinets that were 
leftovers from something back in the mid 90s (probably modem R&D).