From: uno AT 40th DOT com (uno AT 40th DOT com)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: UCLOCK_PER_SEC value
Date: 15 Apr 1999 23:28:42 GMT
Organization: Yanaguana
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Adam Schrotenboer? (ajschrotenboer AT lycosmail DOT com?) wrote (Mon, 12 Apr 1999 19:28:42 -0400):
>I noticed that in time.h UCLOCKS_PER_SEC is defined as 1193180, but when
>I take 2^32/3600 i get approximately 1193046. I know that this isn't
>much difference, only 134, but was still wondering why this is.

It was originally derived from the MGA clock: 14.318MHz (div/12 and fed
to the 8253).  14.318/12=1.193MHz.  From there all stems...(used to be
the only clock source -- 14.318MHz/3 = 4.77 MHz (remember that?)).

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