Path: utzoo!utgpu!cunews!cognos!alzabo!tris
From: tris@alzabo.uucp (Tris Orendorff)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: How to roll my own Clock service routine and emit tones
Keywords: timers, speaker, tones
Message-ID: <1990Oct18.012855.15045@alzabo.uucp>
Date: 18 Oct 90 01:28:55 GMT
References: <16408@shlump.nac.dec.com>
Lines: 29

heintze@grane.enet.dec.com (Siegfried Heintze) writes:

>I have some questions about timers in the IBM PC/AT and its clones.  I wasn't
>sure if this is a
>hardware or software question.

>(1)  What is the name of the chip they use to generate the clock interrupt every
>18.2 ms?
>(2)  Where can I get documentation on it?

I recommend the following book:
Programmer's Problem Solver for the IBM PC, XT and AT
Robert Jourdain
1986
ISBN 0-89303-787-7

It will answer all your questions.

-- 
				Sincerely Yours
				Tris Orendorff
				tris@alzabo.uucp
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