Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!pyramid!voder!apple!bcase 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.