Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site ut-ngp.UTEXAS Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!whuxl!houxm!ihnp4!qantel!dual!mordor!ut-sally!ut-ngp!lindley From: lindley@ut-ngp.UTEXAS (John L. Templer) Newsgroups: net.micro.pc Subject: Re: Parity Check 1 message Message-ID: <2026@ut-ngp.UTEXAS> Date: Sun, 14-Jul-85 16:55:45 EDT Article-I.D.: ut-ngp.2026 Posted: Sun Jul 14 16:55:45 1985 Date-Received: Wed, 17-Jul-85 20:59:07 EDT References: <205@geowhiz.UUCP> <185@teneron.UUCP> Distribution: net Organization: U.Texas Physics Department; Austin, Texas Lines: 36 > >Has anyone ever had this message pop up on your screen in about > >20 point high letters. After which you must hard reboot? > > > > PARITY CHECK 1 > My suspicion is that this program (which I copied off an RBBS) is doing > something to cause the system to generate this message. Perhaps it is > running through some interrupt vector which causes this message. The > message always appears at the same place in the program. I do not > believe that my memory chips are failing since neither the power on > self test nor the advanced diagnostics can detect any problem with the > computer's memory. I think I have an idea what might cause this, at least I found one thing that does cause it. 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. What I did was use the sequence that the BIOS uses to make the error beep during the start up diagnostics, but changing some of the parameters. (No, I don't remember which I/O ports correspond to the timer chip.) 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. Oh well, maybe someone out there can tell me how to get the timer chip to work the speaker. -- ~~ John L. Templer, University of Texas at Austin ~~ {allegra,gatech,seismo!ut-sally,vortex}!ut-ngp!lindley "Oh, I liked it well enough-- only it was so dusty and hot, and the elephants did tease so!" (Can you recognise the character speaking?)