Welcome to TiddlyWiki created by Jeremy Ruston, Copyright © 2007 UnaMesa Association
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To get started with this blank TiddlyWiki, you'll need to modify the following tiddlers:
* SiteTitle & SiteSubtitle: The title and subtitle of the site, as shown above (after saving, they will also appear in the browser title bar)
* MainMenu: The menu (usually on the left)
* DefaultTiddlers: Contains the names of the tiddlers that you want to appear when the TiddlyWiki is opened
You'll also need to enter your username for signing your edits: <<option txtUserName>>
These InterfaceOptions for customising TiddlyWiki are saved in your browser
Your username for signing your edits. Write it as a WikiWord (eg JoeBloggs)
<<option txtUserName>>
<<option chkSaveBackups>> SaveBackups
<<option chkAutoSave>> AutoSave
<<option chkRegExpSearch>> RegExpSearch
<<option chkCaseSensitiveSearch>> CaseSensitiveSearch
<<option chkAnimate>> EnableAnimations
----
Also see AdvancedOptions
My name is Alan Tennant.
My main website can be found [[here|http://with-logic.co.uk]]
WireWorld
[[Who am I?|Alan]]
<<search>><<closeAll>><<permaview>><<newTiddler>><<saveChanges>>
<<tabs txtMainTab "Tags" "All tags" TabTags "Timeline" "Timeline" TabTimeline "All" "All tiddlers" TabAll "Missing" "Missing" TabMoreMissing "Orp" "Orphaned tiddlers" TabMoreOrphans>>
My WireWorld CA Contraptions
WireWorld is 2D Moore neighbourhood 4 state totalistic cellular automation, states 1, 2 and 3 resemble a Generations CA.
It is one of many that I am familiar with.
I am using Golly, it can be found here.
http://golly.sourceforge.net/
The following page up to the binary adder is usefull to understand this page.
http://www.quinapalus.com/wi-index.html
Half and Full adders are electronic components. They can be connected together to proform adding calculations on binary numbers.
http://upload.wikimedia.org/wikipedia/commons/a/a9/Full-adder.svg
This page contains many more small components, most of the components are designed to work with inputs given regularly in a stream as opposed to the occational pulse of activity, as a result many are larger.
http://karl.kiwi.gen.nz/CA-Wireworld.html
It is also worth looking at the Golly example files. They include the simplest standard gates up to complicated components such as the prime calculating computer.
On to things I have designed. Contact me at alan2here@gmail.com for the .rle or .mc files.
[[This|wwImages/cross.png]] shows how the modern crossover could have been developed from the larger crossover that uses 3 NOT gates, intrestingly the smaller crossover acts as an XOR when crossing two signals together. If signals are not given together then both the larger and the smallest requires signals to be 5 cells or more apart to preserve both signals.
[[This|wwImages/rabbit.png]] one shows a delay in which a signals are sent around two loops, one loop is one cell shorter than the other and only after the signals in both loops are aligned a signal is output, a signal is also sent back to reset the loop.
[[Here|wwImages/adder.png]] is a half and a full adder. See http://www.quinapalus.com/wires8.html for an alternative adding device.
[[Thease|wwImages/sgates.png]] gates are synchronizing gates, they have syncronisers on the back where the two inputs are, memory cells in the middle and the gate goes on the end neer the output. There is an AND, an OR, an XOR and a NOT gate. Signals can be input at any time and the output is evaluated only after both inputs have been given. They use a novel signal type where a single signal represents 0 and two signals 6 spaces apart represent a 1. The synchronizers on the gates in this example are of a less reliable type that are smaller and can be easily designed to synchronize to longer periods, the other type is used in the examples below.
[[Here|wwImages/syncfulladd.png]] is a full adder implemented using synchronized gates. There are considrable overheads to using synchronizing components for small devices, this may be overcome however in large devices.
[[This|wwImages/pim.png]] parallel integer multiplier is created using only synchronized gates, crossovers and a few small loops for storing the output on the edges of the device. The image has been reduced in size beyond one cell to one pixel.