[time-nuts] PC clock comparison software?

Peter Vince pvince at theiet.org
Wed Dec 20 10:11:33 EST 2006

     I could be talking a lot of hot air, so please forgive me, but I've
had a thought: if PCs still use a Real Time Clock chip, could a hardware
modification be done to give them an accurate clock frequency, rather
than relying on whatever cheap crystal is installed on the mother board?
Maybe one of the aforementioned TAPR Clock-Blocks configured for, I
guess, a 32768 Hz output?

     I am worried by Hals comment though, that NMIs could upset the clock
- that suggests the PC clock is not just a simple RTC, which would render
the above suggestion invalid.  Oh well, just a thought thrown into the


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