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From: dslg0849@uxa.cso.uiuc.edu (Daniel S. Lewart)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: How do I determine the clock speed?
Keywords: Clock Speed Timer
Message-ID: <1990Dec7.191240.7768@ux1.cso.uiuc.edu>
Date: 7 Dec 90 19:12:40 GMT
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robl@idca.tds.PHILIPS.nl (R. Luursema) writes:

> Basically, you can't determine the CPU clockspeed of an arbitrary PC.
>
> What you can do is determine CPU type and 
> some relative speed against a known system (like IBM PC/XT), by 
> executing some instruction mix and time execution speed.
> However this number can tell only little about CPU clock speed; it
> will give different numbers on similar systems with the same CPU and 
> clock speed.
>
> If you want source (TP), look at INFOPLUS, posted in comp.binaries.ibm.pc
> about a month ago (infop131.zoo). A even more recent version should be
> available on SIMTEL20 or any mirror archives.

Thanks, Rob.  I looked at INFOPLUS 1.40 and it has code to determine the CPU
type, not the clock speed.  This would be fine, but it doesn't (and cannot)
identify all the types of clones.  Thus, it is not sufficiently general.

Dan
d-lewart@uiuc.edu