Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!usc!julius.cs.uiuc.edu!apple!goofy.apple.com!esmith From: esmith@goofy.apple.com (Eric Smith) Newsgroups: comp.arch Subject: Re: Crashing machines with and without microstore, and the IBM AS-400 Message-ID: Date: 8 Jan 91 02:46:55 GMT References: <71537@bu.edu.bu.edu> <1991Jan6.033536.14108@zoo.toronto.edu> <71693@bu.edu.bu.edu> <1763@cluster.cs.su.oz.au> <71756@bu.edu.bu.edu> Sender: usenet@Apple.COM Followup-To: comp.arch Organization: Frobozz Magic Widget Company Lines: 20 In-reply-to: gjc@buitc.bu.edu's message of 7 Jan 91 22:42:04 GMT 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! :-)