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Article #3705Re: Real time AT Clock on int 70h
From: George Pontis
Date: Fri, 09 Oct 1992 06:59
Date: Fri, 09 Oct 1992 06:59
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>I was perusing Ralf Brown's interrupt list, >when I found the entry for the real time AT clock on Int 70h. > >So I wrote a TSR that hooked it and hoped it would be invoked, >every 1024th of a second. > >Absolutely nothing happened. To make this go, you also need to enable that interrupt by unmasking the second interrupt controller, IRQ8, and enable interrupt generation on the RTC chip itself. It sounds like a more useful timer than it really is, if you need precision timekeeping.
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Newsgroups: comp.os.msdos.programmer Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!uakari.primate.wisc.edu!ames!kronos.arc.nasa.gov!iscnvx!netcomsv!netcom.com!geo From: geo@netcom.com (George Pontis) Subject: Re: Real time AT Clock on int 70h Message-ID: <1992Oct9.065953.27618@netcom.com> Organization: Netcom - Online Communication Services (408 241-9760 guest) References: <E36CBC0C807F40DB59@qut.edu.au> <1992Oct08.195743.10203@bmerh85.bnr.ca> Date: Fri, 9 Oct 1992 06:59:53 GMT Lines: 12