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Date:      Wed, 22 Jul 1998 21:35:46 +0200
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        Bruce Evans <bde@zeta.org.au>
Cc:        brian@Awfulhak.org, freebsd-current@FreeBSD.ORG, jak@cetlink.net
Subject:   Re: tickadj -t not changing tick 
Message-ID:  <905.901136146@critter.freebsd.dk>
In-Reply-To: Your message of "Mon, 20 Jul 1998 16:42:39 %2B1000." <199807200642.QAA17899@godzilla.zeta.org.au> 

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In message <199807200642.QAA17899@godzilla.zeta.org.au>, Bruce Evans writes:
>>APM seems to be preventing use of the TSC timecounter.  Otherwise
>>the clock would go non-backwards 233/17 faster :-).
>
>The whole problem may be caused by APM.  APM's time handling is of low
>quality.

As currently designed, there is only the RTC chip which is reliably keeping
track of time on a APMized system, and only reading the registers is reliable,
the number of interrupts and their frequency is subject to change without
notice.

--
Poul-Henning Kamp             FreeBSD coreteam member
phk@FreeBSD.ORG               "Real hackers run -current on their laptop."
"ttyv0" -- What UNIX calls a $20K state-of-the-art, 3D, hi-res color terminal

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