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From: jkenton@pinocchio.encore.com (Jeff Kenton)
Newsgroups: comp.sys.m88k,comp.os.aos
Subject: Re: Software breaking DG AViiON?
Message-ID: <12242@encore.Encore.COM>
Date: 13 Jul 90 14:23:48 GMT
References: <1567@uvm-gen.UUCP>
Sender: news@Encore.COM
Followup-To: comp.sys.m88k
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From article <1567@uvm-gen.UUCP>, by ackerman@sadye.uvm.edu (Steve Ackerman):
> 
> 	We're having a big problem with our DG AViiON 300, and we're
> hoping someone may have had a similar experience.  We're attempting to
> write a stand-alone program that runs without the DG/UX kernel.
> 
>	. . . 
> 
> 	They (DG) replaced everything in the unit, and returned it.
> We got it back this Monday.  Last night, while working on the same
> code, the machine broke again.  Once we could take as coincidence,
> but twice?  We weren't doing anything device specific -- just trying
> to set up our own (basic) exception handler.
> 

Exception handlers for the 88000 are easy to get wrong -- there are so many
more possible ways to do it wrong than right -- and a broken one could do
almost anything.

Could what you are seeing be the result of software that does "almost
anything"?  Otherwise, it's the hardware.  But it sounds from your note
that the software is at least triggering something wierd.  I hope you
have a good logic analyzer handy.


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      jeff kenton  ---	temporarily at jkenton@pinocchio.encore.com	 
		   ---  always at (617) 894-4508  ---
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