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Article #8022

Re: 600 transistor CPU (was: MINIMUM instruction set)

#8022
From: Eugene F. Styer
Date: Fri, 13 Nov 1992 15:52
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In article <1992Nov12.164510.28248@dartvax.dartmouth.edu> stevel@coos.dartmouth.edu (Steve Ligett) writes:
>Somewhere I have a copy of an article (or two) titled
>
>"A design for a 16 bit processor using only 600 transistors"
>
>from Microelectronics Journal, Vol 15, Nr 3,
>copyright 1984 Benn Electronics Publications Ltd, London
>
>The machine has 4 instructions: three subtracts, and one bit clear.
>
>I'll try to find and reread the articles if it would be of interest.
>-- 
>steve.ligett@dartmouth.edu
>Sign in our Machine Room:  Before Leaving Please Lock Door Behind You

I don't have that article any more (at least where I can find it), but I do
remember it.  I decided that if his goal was a small CPU to watch over things,
he would do better to have (say) 8 instructions and include load, store, etc.
My conclusion was that the additional size of the processor (I estimated 1000-
1200 transistors) would be more than balanced by the smaller programs required
(1/2 or smaller) for programs as small as a few hundred instructions.  If his
goal was the fewest number of instructions, then other posts have indicated he
has 3 too many instructions.  All in all, it was an attempt to be more practical
than most of the minimal-instruction systems.

Eugene Styer - 402 Wallace, EKU, Richmond, KY 40475  matstyer@eku.bitnet
"And to think I had a nice, safe career going for me putting mafiosi in jail"
-- 
Eugene Styer - 402 Wallace, EKU, Richmond, KY 40475  matstyer@eku.bitnet
"And to think I had a nice, safe career going for me putting mafiosi in jail"
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Message-ID: <1992Nov13.105238.10552@ms.uky.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!ukma!styer
References: <1992Nov10.235849.19192@fcom.cc.utah.edu> <1992Nov11.144304.10494@news.uiowa.edu> <1992Nov12.164510.28248@dartvax.dartmouth.edu>

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Newsgroups: comp.arch
Path: arc1-ca.pugleaf.net!sparky!uunet!ukma!styer
From: styer@ms.uky.edu (Eugene F. Styer)
Subject: Re: 600 transistor CPU (was: MINIMUM instruction set)
References: <1992Nov10.235849.19192@fcom.cc.utah.edu> 
    <1992Nov11.144304.10494@news.uiowa.edu> 
    <1992Nov12.164510.28248@dartvax.dartmouth.edu>
Message-ID: <1992Nov13.105238.10552@ms.uky.edu>
Date: Fri, 13 Nov 1992 15:52:38 GMT
Organization: University Of Kentucky, Dept. of Math Sciences
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