Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!rutgers!cbmvax!jesup
From: jesup@cbmvax.commodore.com (Randell Jesup)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 48454C50 (HELP)
Keywords: SCSI A2091 Problems
Message-ID: <20242@cbmvax.commodore.com>
Date: 1 Apr 91 23:57:50 GMT
References: <1991Mar15.163457.19985@terminator.cc.umich.edu>
Reply-To: jesup@cbmvax.commodore.com (Randell Jesup)
Organization: Commodore, West Chester, PA
Lines: 32

In article <1991Mar15.163457.19985@terminator.cc.umich.edu> msiskin@css.itd.umich.edu (Marc Siskin) writes:
>Ever since I got my 2091 I have been getting Random gurus from 2 addresses.
>Just recently I have tracked the addresses to the SCSI Handler and the 
>IORequest Handler.  When I get these gurus Location 0 has these numbers
>in it (as shown by MemGuard) 48454C50 which translates to HELP in ASCII.

	That's part of Exec's Alert mechanism.

>My dealer has been unable to determine why I get these gurus since they
>don't happen consistantly.  I get gurus when doing SCSI I/O and when the
>system is just sitting there not doing anything.  I have Wshell, Conman,
>Fcomp, AREXX and Crossdos in my startup-sequence but when I removed
>everything but CBM supplied programs I still got gurus.  

	My only suggestions: try board-swapping the 2091 and/or the
motherboard.  Also, you didn't indicate what versions of the roms you had,
but I know of no version that causes that sort of error.  Actually, before
board-swapping, I'd remove all other peripherals - it could be caused by
some sort of Zorro problem between the 2091 and one of your other boards
(micron, AT bridgeboard).

>My Hardware is an A2000 V4.2 Mother board with the missing first keystroke
>problem fixed, 1.3 Roms, Fat Agnus, Micron 2 Meg Memory board, AT Bridgeboard
>and 2091-40.

-- 
Randell Jesup, Keeper of AmigaDos, Commodore Engineering.
{uunet|rutgers}!cbmvax!jesup, jesup@cbmvax.commodore.com  BIX: rjesup  
Disclaimer: Nothing I say is in anything other than my personal opinion.
Thus spake the Master Ninjei: "To program a million-line operating system
is easy, to change a man's temperament is more difficult."
(From "The Zen of Programming")  ;-)