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From: gjc@buitc.bu.edu (George J. Carrette)
Newsgroups: comp.arch
Subject: Crashing machines with and without microstore, and the IBM AS-400
Message-ID: <71756@bu.edu.bu.edu>
Date: 7 Jan 91 22:42:04 GMT
References: <71537@bu.edu.bu.edu> <1991Jan6.033536.14108@zoo.toronto.edu> <71693@bu.edu.bu.edu> <1763@cluster.cs.su.oz.au>
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Reply-To: gjc@buitc.bu.edu (George J. Carrette)
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Organization: Information Technology, Boston University, Boston, MA, USA
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In article <1763@cluster.cs.su.oz.au> andrewt@cluster.cs.su.oz (Andrew Taylor) writes:
>
>On our Sun 3/50s running SunOS 4.1 crashme can result (try crashme 32 1 4)
>in a cpu-bound process which can't be killed. Rebooting seems the only way
>to remove it. Seems like an OS bug to me.

Thanks for the info. The replies were not always that specific.
[BTW. One group interested in this sort of thing is the CERT security
 advisory people at CMU].

I want to apologize for the tone of my last message. It was
too harsh. Not at all the kind of fun-loving point I wanted to
get across.

[In some previous article it was mentioned that instruction sets
designed after 1985 were made so that microcode would not be required]

Q: How do we date the AS-400 from IBM? It is a tagged architecture
   with a PAGEABLE MICROSTORE! It was introduced around 1985 anyway.

-gjc