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From: nha@crim.eecs.umich.edu (Nejib Ben Hadj-Alouane)
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.programmer
Subject: Real-time clock?
Message-ID: <1990Oct9.203437.22659@zip.eecs.umich.edu>
Date: 9 Oct 90 20:34:37 GMT
Sender: news@zip.eecs.umich.edu
Reply-To: nha@crim.eecs.umich.edu (Nejib Ben Hadj-Alouane)
Distribution: usa
Organization: University of Michigan EECS Dept., Ann Arbor, MI
Lines: 10

Hello netters,

I am trying to use the IBM PC (compatible) to do real-time control. And,
I need access to some kind of a clock. The timer of the system (an intel 8253)
provides the interrupt IRQ0; but it seems that IRQ0 is being used by BIOS
to maintain several system functions. Besides, that provides with only 
one programmable counter (may be a limitation). Any ideas? 

Your help is greatly appreciated. Please respond by direct mail to me 
(I do not check the news very often).