PReP RTC vs Decrementer accuracy...

[Troy Benjegerdes]

On Tue, 8 Dec 1998, Cort Dougan wrote:

> The hardware is more stable, of course, but we can miss when handling it.
> Take a look at the decrementer code - I think it's possible to miss a decr
> when resetting it.  That could explain drift.

Okay, would this cause the clock to be fast? (mine was about 45 minutes
fast) (And, is it feasable to make it 'impossible' to miss a decr?)

I have also rebooted the machine quite a bit.. This may also be the
reason.

> 
> }Nope, not even close.  If you convert rtc drift specifications and
> }processor oscillator drift specifications to a common reference (like
> }PPM) you will see processor oscillators are significantly better
> 
> 

Basically, I want to know the right way to do this before fixing it.

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