Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site umcp-cs.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!think!harvard!seismo!umcp-cs!chris From: chris@umcp-cs.UUCP (Chris Torek) Newsgroups: net.unix-wizards Subject: Re: VAX soft error messages Message-ID: <836@umcp-cs.UUCP> Date: Fri, 12-Jul-85 21:13:53 EDT Article-I.D.: umcp-cs.836 Posted: Fri Jul 12 21:13:53 1985 Date-Received: Sat, 13-Jul-85 15:25:02 EDT References: <247@kovacs.UUCP> Organization: U of Maryland, Computer Science Dept., College Park, MD Lines: 22 "soft ecc" messages come from all sorts of places in all sorts of Unix kernels. However, the one you mentioned sounds like a 780 or 750 memory controller (mcr) ecc error. The 4BSD kernels print something like this: mcr%d: soft ecc addr %x syn %x You can then use your manufacturer's tables to look up the "address" and "syndrome number"; this will point you to the bad chip. The tables vary for different memory boards and systems. 4.2/4.3 BSD kernels will even (optionally) point you to the chip, IF you have all Trendata boards.... (Maybe someday I'll put in the National Semi board tables. Too bad there's no way to pull a board identifier out of the controller. Also too bad DEC doesn't seem to give out ECC tables---then again DEC solders the chips in directly (better for stability, worse for repairs).) -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 4251) UUCP: seismo!umcp-cs!chris CSNet: chris@umcp-cs ARPA: chris@maryland