Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.PCS 1/10/84; site mtgzz.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!drutx!mtuxo!mtgzz!dmt From: dmt@mtgzz.UUCP (d.m.tutelman) Newsgroups: net.micro.pc Subject: Re: Parity Check 1 message Message-ID: <938@mtgzz.UUCP> Date: Wed, 17-Jul-85 11:59:13 EDT Article-I.D.: mtgzz.938 Posted: Wed Jul 17 11:59:13 1985 Date-Received: Thu, 18-Jul-85 08:22:20 EDT References: <205@geowhiz.UUCP> <185@teneron.UUCP> <2026@ut-ngp.UTEXAS> Organization: AT&T Information Systems Labs, Middletown NJ Lines: 20 Cc: dmt > I was playing around with the timer chip, > trying to discover how to program it to drive the speaker, working from > the Technical Refference Manual. > ..... In addition to the many varied error messages and lockups > I got as a result, one time the "PARITY ERROR 1" message appeared on > the screen, and the soft reboot didn't work. > > I would have thought that the timer chip wasn't so essential to the > opperation of the pc. I though the 8088 used it's own internal clock. I believe that one of the channels on the timer chip is used to generate the refresh signal for the dynamic RAM. If that got stretched out significantly (or turned off altogether) it would guarantee some sort of memory fault. Maybe that's what happened. Dave Tutelman Physical - AT&T Information Systems Holmdel, NJ 07733 Logical - ...ihnp4!mtuxo!mtgzz!dmt Audible - (201)-834-2895