gjc@buitc.bu.edu (George J. Carrette) (01/08/91)
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
esmith@goofy.apple.com (Eric Smith) (01/08/91)
In article <71756@bu.edu.bu.edu> gjc@buitc.bu.edu (George J. Carrette) writes: > [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. Actually, the first AS-400 machines are more recent than that. I think they were introduced in '88 or '89. Anyone know for sure? Does the AS-400 have any neat architectural innovations other than those needed to merge the System 36 and 38? Are there any good papers on the AS-400? Eric -- Eric L. Smith Opinions expressed herein do not necessarily reflect those esmith@apple.com of my employer, friends, family, computer, or even me! :-)
moliver@shadow (Mike Oliver) (01/09/91)
In article <ESMITH.91Jan7184655@goofy.apple.com> esmith@goofy.apple.com (Eric Smith) writes: >In article <71756@bu.edu.bu.edu> gjc@buitc.bu.edu (George J. Carrette) writes: >> >> 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. > >Actually, the first AS-400 machines are more recent than that. I think >they were introduced in '88 or '89. Anyone know for sure? "The Application System/400 [tm] (AS/400 [tm]) was announced in June 1988 and was the product of a development effort centered in the IBM Rochester, Minnesota, Development Laboratory". >Does the AS-400 have any neat architectural innovations other than those >needed to merge the System 36 and 38? What's the difference between "neat" and "off the wall" ? :) > Are there any good papers on the >AS-400? The above quote concerning the announcement date is excerpted from the "IBM Systems Journal Vol 26 No 3, 1989", an issue of the SJ dedicated to the AS/400. It doesn't go into enormous detail on the machine architecture, but it does give a decent overview of the system composition and the rationale behind it. If you want to get hold of a copy (cost is $6 for a single issue), ask your local IBM office. The order number for this particular issue is G321-0095-00. Cheers, Mike. moliver@pyramid.com {allegra,decwrl,hplabs,munnari,sun,utai,uunet}!pyramid!moliver