[ntp:questions] how do I lock in average frequency correction

John Hasler jhasler at newsguy.com
Wed Feb 15 14:33:54 UTC 2012


Dave Hart writes:
> I believe it had more to do with the Color Graphics Adapter circuitry
> needing to operate at NTSC-compatible frequency.

According to my Technical Reference manual the XT and the Portable PC
used a 14.31818MHz crystal.  This was the only crystal on the
motherboard.
-- 
John Hasler 
jhasler at newsguy.com
Dancing Horse Hill
Elmwood, WI USA



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