Messages in this thread |  | | Date | Thu, 5 Jul 2001 13:43:06 +0400 | From | Ivan Kokshaysky <> | Subject | Re: [patch] Re: alpha - generic_init_pit - why using RTC for calibration? |
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On Thu, Jul 05, 2001 at 11:14:19AM +0400, Oleg I. Vdovikin wrote: > Richard, thanks. But please use calibrate_cc version which I've submited > as a patch - it gives more accuracy with maximum latch we can ever use and
With both variants even on a 166MHz CPU you'll get above 1e-7 precision, which is way above accuracy of any crystal oscillator.
> has cc's type changed to 'unsigned int' to prevent problems when rpcc > overflows.
The only difference is that you'll have extra 'zap' instruction converting 'unsigned int' to 'unsigned long'.
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