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From: bcase@apple.UUCP (Brian Case)
Newsgroups: comp.arch
Subject: Re: Wirth's "challenge" (was Re: RISC)
Message-ID: <6877@apple.UUCP>
Date: Wed, 2-Dec-87 13:32:57 EST
Article-I.D.: apple.6877
Posted: Wed Dec  2 13:32:57 1987
Date-Received: Sat, 5-Dec-87 17:28:28 EST
References: <902@mips.UUCP> <1775@cognos.UUCP> <5157@columbia.edu> <1883@cognos.UUCP>
Reply-To: bcase@apple.UUCP (Brian Case)
Organization: Apple Computer Inc., Cupertino, USA
Lines: 12

In article <1883@cognos.UUCP> roberts@cognos.UUCP (Robert Stanley) writes:

[Talking about the Yorktown 801 simple machine architecture.]

>Not in the form originally worked with in Building 801.  However, the same RISC
>architecture became both the RT PC and the heart of a number of key pieces of
>the big mainframe systems.

Just in the interest of accurate information, the RT PC processor
architecture is *very* unlike the 801 processor architecture.  The
801 had some influence on the RT PC, but the implementation constraints
were different.  I have heard only nth-hand information that the 801
in unadulterated form is used as an I/O processor in mainframes.