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From: ane@hal.UUCP (Aydin "Bif" Edguer)
Newsgroups: comp.unix.wizards,comp.sys.dec
Subject: mcr0: errors
Message-ID: <192@hal.UUCP>
Date: Wed, 2-Dec-87 09:46:04 EST
Article-I.D.: hal.192
Posted: Wed Dec  2 09:46:04 1987
Date-Received: Sun, 6-Dec-87 23:19:08 EST
Reply-To: ane@hal.UUCP (Aydin "Bif" Edguer)
Followup-To: comp.sys.dec
Organization: Biometry Computing Facility
Lines: 30
Keywords: syslog mcr0 ecc errors
Xref: mnetor comp.unix.wizards:5768 comp.sys.dec:479

Hello,
	I am currently running UNIX 4.3 BSD on a VAX-11/750.  Recently
I have noticed a large number of soft ecc errors appearing in my system
log.  It looks alot like there may be a bad chip on one of my 6 memory
boards.  I can isolate which board (probably) by board swapping, but
how can I determine which chip?  The memory boards all pass the software
diagnostic tests from Digital.  I am including some of the log entries
in the hopes that this will help.

Aydin Edguer					Case Western Reserve University
!{cbosgd,decvax,sun}!mandrill.cwru.EDU!hal!ane		Cleveland, OH
Work : (216) 368 3195	0900-1700 EST M-F
----------------------------------------------------------
Nov 28 19:39:55 hal vmunix: mcr0: soft ecc addr 120d syn 4
Nov 28 22:10:02 hal vmunix: mcr0: soft ecc addr 1222 syn 4
Nov 28 15:10:02 hal vmunix: mcr0: soft ecc addr 1228 syn 4
Nov 28 14:58:00 hal vmunix: mcr0: soft ecc addr 1229 syn 4
Nov 28 20:15:35 hal vmunix: mcr0: soft ecc addr 1230 syn 4
Nov 28 19:29:12 hal vmunix: mcr0: soft ecc addr 1231 syn 4
Nov 28 12:17:47 hal vmunix: mcr0: soft ecc addr 1233 syn 4
Nov 28 09:00:01 hal vmunix: mcr0: soft ecc addr 1238 syn 4
Nov 28 09:30:01 hal vmunix: mcr0: soft ecc addr 1239 syn 4
Nov 28 09:10:01 hal vmunix: mcr0: soft ecc addr 123a syn 4
Nov 28 09:16:25 hal vmunix: mcr0: soft ecc addr 123b syn 4
Nov 28 18:45:51 hal vmunix: mcr0: soft ecc addr 123e syn 4
Nov 28 19:15:51 hal vmunix: mcr0: soft ecc addr 123f syn 4
Nov 28 05:40:41 hal vmunix: mcr0: soft ecc addr 124f syn 4
Nov 28 22:16:28 hal vmunix: mcr0: soft ecc addr 126a syn 4
Nov 28 17:24:11 hal vmunix: mcr0: soft ecc addr 12b7 syn 4
Nov 28 19:45:54 hal vmunix: mcr0: soft ecc addr 12d8 syn 4