AS/400s in the Champaign area

From: Dave McGuire <>
Date: Sat Apr 20 11:39:54 2002

On April 19, William Donzelli wrote:
> > FWIW the AS/400 is essentially the follow-on to the System/36, to the
> > point of having a highly-evolved software environment allowing S/36
> > applications to run un-modified on AS/400. Supposedly there is some
> > dotted-line relationship to S/38 as well, but I don't have any real
> > information about that.
> The other way round, architecturally. AS/400 gained most from S/38 and
> FS. The whole AS/400 family was designed to replace S/32, S/34, S/36, and
> S/38.

  The AS/400 grew primarily out of the S/36 architecture but
incorporated many architectural features of the S/38. It has a good
deal of application compatibility with both the S/36 and the S/38.
The S/38 (which came out before the S/36) is otherwise a fairly
different machine from the S/32, S/34, and S/36.

  The lineage:

   System/3, 1969
   System/32, 1975
   System/34, 1977
   System/38, 1978
   System/36, 1983
   AS/400 family, 1988

  The last model of the System/36 line, the 5363, was "enhanced" (though
I don't know how) and renamed "AS/Entry" seems to me that they
followed the numbering scheme, but loosely. I don't have any hard
information about this, but I'm guessing this is how they got to where
they are now. I've put the possible "steps" through the naming system
in brackets below.



Dave McGuire                                 "Mmmm.  Big."
St. Petersburg, FL                                -Den
Received on Sat Apr 20 2002 - 11:39:54 BST

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