kaleb@thyme.jpl.nasa.gov (Kaleb Keithley ) (09/18/90)
This is a last ditch effort, before I go out and replace my motherboard. I just added four more meg to my (generic Taiwan) 386SX motherboard, bringing it to a total of eight meg. The machine boots, memory test finds no errors, but both my protected mode operating systems, OS/2 1.1 and ESIX 3.2.C, crash. Good old M'soft provides the wonderfully intuitive "Parity Error ????", while ESIX says "PANIC: Parity Error on Motherboard" followed by a dump message. By taking the two SIMMs out of the fourth bank, everything works ok. I swapped all eight SIMMs around in the first three banks, so I know they're all good. I only get the parity error when I plug SIMMs into the fourth bank. Anyone have any thoughts? -- Kaleb Keithley Jet Propeller Labs kaleb@thyme.jpl.nasa.gov "So that's what an invisible barrier looks like!"
richard@pegasus.com (Richard Foulk) (09/18/90)
>This is a last ditch effort, before I go out and replace my motherboard. > >I just added four more meg to my (generic Taiwan) 386SX motherboard, bringing >it to a total of eight meg. The machine boots, memory test finds no errors, >but both my protected mode operating systems, OS/2 1.1 and ESIX 3.2.C, crash. >Good old M'soft provides the wonderfully intuitive "Parity Error ????", >while ESIX says "PANIC: Parity Error on Motherboard" followed by a dump >message. > >By taking the two SIMMs out of the fourth bank, everything works ok. I >swapped all eight SIMMs around in the first three banks, so I know they're >all good. I only get the parity error when I plug SIMMs into the fourth bank. It is still possible that some of your SIMMs are bad. Are some of them Samsung brand? -- Richard Foulk richard@pegasus.com
poffen@sj.ate.slb.com (Russell Poffenberger) (09/18/90)
In article <1990Sep18.073020.3330@pegasus.com> richard@pegasus.com (Richard Foulk) writes: >>This is a last ditch effort, before I go out and replace my motherboard. >> >>I just added four more meg to my (generic Taiwan) 386SX motherboard, bringing >>it to a total of eight meg. The machine boots, memory test finds no errors, >>but both my protected mode operating systems, OS/2 1.1 and ESIX 3.2.C, crash. >>Good old M'soft provides the wonderfully intuitive "Parity Error ????", >>while ESIX says "PANIC: Parity Error on Motherboard" followed by a dump >>message. >> >>By taking the two SIMMs out of the fourth bank, everything works ok. I >>swapped all eight SIMMs around in the first three banks, so I know they're >>all good. I only get the parity error when I plug SIMMs into the fourth bank. > >It is still possible that some of your SIMMs are bad. > >Are some of them Samsung brand? It is also possible (since only the fourth bank causes problems) that the board itself is bad, or one of the SIMM sockets in the fourth bank is bad. Many board manufacturers don't test all the ram sockets. Russ Poffenberger DOMAIN: poffen@sj.ate.slb.com Schlumberger Technologies UUCP: {uunet,decwrl,amdahl}!sjsca4!poffen 1601 Technology Drive CIS: 72401,276 San Jose, Ca. 95110 (408)437-5254
JCS120@psuvm.psu.edu (09/21/90)
If I am reading your problem correctly, it sounds like the motherboard may have a bad memory connection in the fourth bank. Hope this helps! JCS120
root@neon.UUCP (Thomas Ziemer) (09/22/90)
kaleb@thyme.jpl.nasa.gov (Kaleb Keithley ) writes: > but both my protected mode operating systems, OS/2 1.1 and ESIX 3.2.C, crash. >Good old M'soft provides the wonderfully intuitive "Parity Error ????", >while ESIX says "PANIC: Parity Error on Motherboard" I think, I have had the same problem some time ago. While installing interactive's unix I get the same message. The solution was changing my VGA card. The old one seemed to access forbidden memory addresses. Perhaps this will help you. Greetings ... thomas -- __ ______________________________________________________________________ (00) N E O N Research Caboose Computer Science Research \`\/ Thomas Ziemer, 1000 Berlin 20, West Germany, Phone#: +049-30-361 89 95 "" thomas@neon.UUCP, thomas@neon.mbx.sub.org [tmpmbx!zelator!neon!thomas] ---------------------------------------------------------------------- Wenn man es versteht, ist es veraltet... (Bitton's Theorem)