Path: utzoo!attcan!uunet!seismo!ukma!uflorida!haven!decuac!shlump.nac.dec.com!shodha.dec.com!alan
From: alan@shodha.dec.com ( Alan's Home for Wayward Notes File.)
Newsgroups: comp.unix.ultrix
Subject: Re: uVax II problems
Summary: Memory error.
Message-ID: <1329@shodha.dec.com>
Date: 1 Jun 90 21:46:42 GMT
References: <1990Jun1.151251.24062@eng.umd.edu>
Organization: Digital Equipment Corp. - Colorado Springs, CO.
Lines: 22


} [ Crash dump deleted for space savings... ]

	The machine check 80 is (as it says) a failure to read
	from memory.  Generally this is due to a parity error,
	but it could be something worse.  The VAP listed (what-
	ever that is) is a virtual memory address.  If you can
	turn it into a physical address you should be able to
	figure out if the error is on the 8 MB board or the 1 MB
	on the CPU board.

	Since the system was getting fairly far along in booting
	you could probably boot the standalone system and get it
	running.  That way at least you can check the file systems
	and run a simple memory test:

		dd if=/dev/mem of=/dev/null

	You might also be able to boot the customer diagnostic
	tape, which might have something on it test memory.
-- 
Alan Rollow				alan@nabeth.enet.dec.com