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- Newsgroups: alt.folklore.computers
- Path: sparky!uunet!mnemosyne.cs.du.edu!nyx!jgriffit
- From: jgriffit@nyx.cs.du.edu (Jonathan Griffitts)
- Subject: Re: ASSEMBLY LANGUAGE IBM
- Message-ID: <1992Nov18.203029.18985@mnemosyne.cs.du.edu>
- Sender: usenet@mnemosyne.cs.du.edu (netnews admin account)
- Organization: University of Denver, Dept. of Math & Comp. Sci.
- References: <BxtpIv.AMD@mentor.cc.purdue.edu> <STEVEV.92Nov17104240@miser.uoregon.edu> <NICKEL.92Nov17235221@desaster.cs.tu-berlin.de> <1992Nov18.104521.9036@news.columbia.edu>
- Date: Wed, 18 Nov 92 20:30:29 GMT
- Lines: 18
-
- lasner@watsun.cc.columbia.edu (Charles Lasner) writes:
- > As someone posted
- >earlier, the binary of any program from the beginning will run on each and
- >every model. This assumes that the implied O/S functions are present, as
-
- Actually, this is not strictly true.
-
- Counterexample: the 360 model 20, which implemented only a subset of the
- 360 instruction set. As I recall, it did not support fullword operations
- (halfword only), nor packed BCD memory-to-memory stuff, nor other 'fancy'
- operations. It was basically just a 16-bit minicomputer instruction set.
-
- As far as I know, though, it WAS upward compatible to the other 360s.
-
- --
- --JCG
- AnyWare Engineering, Boulder CO
- 303 442-0556
-