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Article #8022Re: 600 transistor CPU (was: MINIMUM instruction set)
From: Eugene F. Styer
Date: Fri, 13 Nov 1992 15:52
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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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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