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From: xanthian@saturn.ADS.COM (Metafont Consultant Account)
Newsgroups: comp.theory.cell-automata
Subject: Re: wireworld patterns
Message-ID: <10801@saturn.ADS.COM>
Date: 10 Feb 90 00:37:34 GMT
References: <6713@ubc-cs.UUCP>
Organization: Advanced Decision Systems, Mt. View, CA (415) 960-7300
Lines: 41

In article <6713@ubc-cs.UUCP> phillips@cs.ubc.ca (George Phillips) writes:

 > In the Jan. 1990 issue of Scientific American, A. K.  Dewdney
 > describes the rules for a cellular automata called "wireworld".
 > For those that haven't seen it, each cell has 4 possible states:
 > space, wire, electron head or electron tail.  Cells interact with
 > their 8 neighbours by the following rules:
 > 
 > - space cells forever remain space cells
 > - electron tails turn into wire cells
 > - electron heads turn into electron tails
 > - wire cells remain wire cells unless bordered by 1 or 2 electron
 >   heads 
 > 
 > With these rules, electrons composed of heads and tails can move
 > along wires and you can build diodes, OR gates, NOT gates, memory
 > cells, wire crossings and so on.
 > 
 > After a couple of really cheap hacks, I played with wireworld on my
 > PC and Unix and was able to come up with a 6 cycle memory cell, a
 > number of logical gates and some pulsars which generate electrons
 > at different rates.  If anyone is interested, I'll post my patterns
 > here and (hopefully) someone can dazzle me with their discoveries.
 > If such postings (or even this posting) are inappropriate here, I'm
 > sure you'll inform me :-).
 > 
 > -- 
 > George Phillips phillips@cs.ubc.ca
 > {alberta,uw-beaver,uunet}!ubc-cs!phillips

Hey, post your cheap hacks, too.  Porting them should be easier than
coming up with them in the first place!  This group is too quiet; a
bit of source code wouldn't hurt a bit.
--
Again, my opinions, not the account furnishers'.

xanthian@well.sf.ca.us (Kent Paul Dolan)
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