[ntp:questions] drift modeling question

David Woolley david at ex.djwhome.demon.co.uk.invalid
Mon Jul 14 23:08:58 UTC 2008

David Woolley wrote:

> 1.190 MHz (that's what the PC Technical Reference says, but I suspect, 

That's actually the AT, not the basic PC.  It looks like the AT used a 
completely separate clock for for the processor clock, whereas I think 
the PC used the 14.1... MHz one as the basic source for that.  Modern 
PCs tend to have only one crystal besides the 32kHz one.  The former 
being used for everything except the CMOS clock.

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