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From: reggie@pdnbah.UUCP (George Leach)
Newsgroups: comp.arch
Subject: Re: Wirth's "challenge" (was Re: RISC)
Message-ID: <1846@pdn.UUCP>
Date: Thu, 3-Dec-87 14:14:32 EST
Article-I.D.: pdn.1846
Posted: Thu Dec  3 14:14:32 1987
Date-Received: Wed, 9-Dec-87 02:35:59 EST
References: <902@mips.UUCP> <1775@cognos.UUCP> <5157@columbia.edu> <1883@cognos.UUCP> <6877@apple.UUCP>
Sender: usenet@pdn.UUCP
Reply-To: reggie@pdnbah.UUCP (George Leach)
Organization: Paradyne Corporation, Largo, Florida
Lines: 27

In article <6877@apple.UUCP> bcase@apple.UUCP (Brian Case) writes:
>In article <1883@cognos.UUCP> roberts@cognos.UUCP (Robert Stanley) writes:
>
>[Talking about the Yorktown 801 simple machine architecture.]
>
>I have heard only nth-hand information that the 801
>in unadulterated form is used as an I/O processor in mainframes.

       About a year and a half ago I wrote an overview paper on RISC
architecture for a class that I was taking in Computer Management.  I 
asked Herbie Chong, from the Watson Research Center in Yorktown Heights,
what had become of the 801.  I paraphrased his e-mail responce as follows:

"Finally, the 801 is used as the processor controller in the IBM 3090
mainframe.  A processor controller monitors all memory, device controllers,
I/O channels, and handles console interaction when the 3090 itself is
unable to do so."

       I beleive since that time the UUCP machine at Yorktown Height, polaris,
is no more.  So I don't even know if anyone there is on the net and can offer
their insights.


George W. Leach					Paradyne Corporation
{gatech,rutgers,attmail}!codas!pdn!reggie	Mail stop LF-207
Phone: (813) 530-2376				P.O. Box 2826
						Largo, FL  34649-2826