Programming the 8253 timer

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#1038

From: richard.dib
Date: Tue, 18 Aug 1992 15:06

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Hi There:

How can I program the 8253 timer so that it generates an interrupt every
1/2 second, and then execute a particular function?  I am using C language.

Why I want to do this?  I have an interactive type of program already written. 
There is something I want the program to do every 1/2 a second at the same time
the program is doing something else.  That is why I would like to set a timer
to interrupt the program every 1/2 sec and then execute a particular function.

With something like this, minimal modifications will have to be done to the 
original program (25,000 lines) and that is what I am looking for.

Please let me know if you know how to do this using C (Borland C), or if you 
have some book references that I can use. 

Thanks in advance!

Richard Dib
AT&T Bell Laboratories

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Message-ID: <1992Aug18.150656.904@cbnewse.cb.att.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!walter!att!att!cbnewsi!cbnewsh!cbnewse!cafe

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Newsgroups: comp.os.msdos.programmer,comp.sys.ibm.pc.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!walter!att!att!cbnewsi!cbnewsh!cbnewse!cafe
From: cafe@cbnewse.cb.att.com (richard.dib)
Subject: Programming the 8253 timer
Organization: AT&T
Date: Tue, 18 Aug 1992 15:06:56 GMT
Message-ID: <1992Aug18.150656.904@cbnewse.cb.att.com>
Followup-To: poster
Keywords: 8253 timer interrupts
Lines: 21