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Date:      Thu, 29 Jul 1999 15:00:59 +1000
From:      Bruce Evans <bde@zeta.org.au>
To:        mike@smith.net.au, phk@critter.freebsd.dk
Cc:        cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org
Subject:   Re: cvs commit: src/sys/i386/apm apm.c apm_setup.s apm_setup.h src/sys/i386/isa clock.c
Message-ID:  <199907290500.PAA31254@godzilla.zeta.org.au>

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>> I'd rather we stop using if it looks manipulated.  I have looked at various
>> ways to improve the calibration of the TSC by spending longer time doing it,
>> this is however not enough to detect a manipulated TSC because the timeouts
>> in the bios may be half and whole hours.
>
>Basically, the BIOS' behaviour has to be considered to be 
>nondeterministic.

That's just one reason why using the BIOS shouldn't be standard.

Bruce


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