home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!sgiblab!darwin.sura.net!wupost!gumby!yale!yale.edu!ira.uka.de!math.fu-berlin.de!mailgzrz.TU-Berlin.DE!mailgzrz.tu-berlin.de!nickel
- From: nickel@cs.tu-berlin.de (Juergen Nickelsen)
- Newsgroups: alt.folklore.computers
- Subject: Re: ASSEMBLY LANGUAGE IBM
- Date: 17 Nov 1992 22:52:21 GMT
- Organization: STONE Project, Technical University of Berlin, Germany
- Lines: 22
- Message-ID: <NICKEL.92Nov17235221@desaster.cs.tu-berlin.de>
- References: <16NOV92.12250000.0072@VM1.MCGILL.CA> <BxtpIv.AMD@mentor.cc.purdue.edu>
- <STEVEV.92Nov17104240@miser.uoregon.edu>
- Reply-To: nickel@cs.tu-berlin.de
- NNTP-Posting-Host: desaster.cs.tu-berlin.de
- In-reply-to: stevev@miser.uoregon.edu's message of 17 Nov 92 10:42:40
-
- In article <STEVEV.92Nov17104240@miser.uoregon.edu>
- stevev@miser.uoregon.edu (Steve VanDevender) writes:
-
- > I suspect that the questions apply to IBM's most famous series of
- > machines, the 360/370 series. If you thought them placing
- > increasingly souped-up versions of the 8088 in IBM PCs was bad,
- > note that the 360/370 series has been using the same instruction
- > set and processor architecture for nearly _30 years_. IBM's
- > top-end mainframes (like the 3090) still run IBM 360 programs in
- > binary form.
-
- If I remember Tanenbaum's "Structured Computer Organization" correctly
- (just lent it to a friend), the different 360/370 CPUs have the same
- instruction set and architecture only at the *programmnig level*, but
- are completely different at the microprogramming level, even different
- architectures. I vaguely remember reading elsewhere that the
- top-of-the-line model of the 370 (360?) wasn't even microprogrammed
- but executed the machine instructions in hardware for speed reasons.
- A true RISC machine with a complex instruction set.
-
- --
- Juergen Nickelsen
-