From owner-cvs-all  Wed Jul 28 22: 3:11 1999
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Date: Thu, 29 Jul 1999 15:00:59 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199907290500.PAA31254@godzilla.zeta.org.au>
To: mike@smith.net.au, phk@critter.freebsd.dk
Subject: Re: cvs commit: src/sys/i386/apm apm.c apm_setup.s apm_setup.h src/sys/i386/isa clock.c
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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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