RF28B: Difference between revisions
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|discoverer = Dave Buckingham | |discoverer = Dave Buckingham | ||
|rle = true | |rle = true | ||
|viewerconfig = #C [[ WIDTH 600 HEIGHT 400 ZOOM 16 GPS | |viewerconfig = #C [[ WIDTH 600 HEIGHT 400 ZOOM 16 GPS 7 PAUSE 2 T 28 PAUSE 2 LOOP 29 ]] | ||
}} | }} | ||
'''RF28B''' is a [[converter]] that accepts an [[R-pentomino]] as input and produces an output [[B-heptomino]] 28 ticks later. Of nine major variants known as of the end of 2017, four versions are shown below. Most of these were discovered by [[Dave Buckingham]] between 1972 and the early 1980's. | '''RF28B''' is a [[converter]] that accepts an [[R-pentomino]] as input and produces an output [[B-heptomino]] 28 ticks later. Of nine major variants known as of the end of 2017, four versions are shown below. Most of these were discovered by [[Dave Buckingham]] between 1972 and the early 1980's. | ||
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|position = center | |position = center | ||
|pname = rf28bvariants | |pname = rf28bvariants | ||
|viewerconfig = #C [[ AUTOSTART THUMBSIZE 2 GPS | |viewerconfig = #C [[ AUTOSTART THUMBSIZE 2 GPS 7 ZOOM 10 HEIGHT 800 PAUSE 2 T 28 PAUSE 2 T 48 PAUSE 2 LOOP 49 ]] | ||
}} | }} | ||
The top version above is part of the [[L156]] [[Herschel conduit]], but it can be replaced by the variant below it which produces a forward glider output. The third version can be combined with a [[boojum reflector]] or [[rectifier]] to clean up the block normally produced by the output B-heptomino. The fourth version is used in Paul Callahan's Herschel receiver. | The top version above is part of the [[L156]] [[Herschel conduit]], but it can be replaced by the variant below it which produces a forward glider output. The third version can be combined with a [[boojum reflector]] or [[rectifier]] to clean up the block normally produced by the output B-heptomino. The fourth version is used in Paul Callahan's Herschel receiver. | ||
A B-heptomino naturally evolves into a Herschel, as shown above -- but it leaves an extra block behind which must then be cleaned up before the circuit can be used again. To avoid this problem, in most cases a conduit such as [[BFx59H]] or [[BFx46B]] will be appended to the RF28B. | |||
==External links== | ==External links== | ||
{{LinkLexicon|lex_r.htm#rf28b}} | {{LinkLexicon|lex_r.htm#rf28b}} | ||
* [http://conwaylife.com/ref/lifepage/patterns/bhept/bhept.html My Experience with B-heptominos in Oscillators], by Dave Buckingham | * [http://conwaylife.com/ref/lifepage/patterns/bhept/bhept.html My Experience with B-heptominos in Oscillators], by Dave Buckingham | ||
Revision as of 14:26, 1 May 2018
| RF28B | |||||
| View static image | |||||
| Pattern type | Conduit | ||||
|---|---|---|---|---|---|
| Conduit type | Converter | ||||
| Input | R-pentomino | ||||
| Output | B-heptomino | ||||
| Number of cells | 11 | ||||
| Step | Unknown | ||||
| Recovery time (ignoring FNG if any) |
33 ticks | ||||
| Minimum overclock period (ignoring FNG if any) |
Unknown | ||||
| Spartan? | Yes | ||||
| Discovered by | Dave Buckingham | ||||
| Year of discovery | Unknown | ||||
| |||||
RF28B is a converter that accepts an R-pentomino as input and produces an output B-heptomino 28 ticks later. Of nine major variants known as of the end of 2017, four versions are shown below. Most of these were discovered by Dave Buckingham between 1972 and the early 1980's.
| (click above to open LifeViewer) RLE: here Plaintext: here |
The top version above is part of the L156 Herschel conduit, but it can be replaced by the variant below it which produces a forward glider output. The third version can be combined with a boojum reflector or rectifier to clean up the block normally produced by the output B-heptomino. The fourth version is used in Paul Callahan's Herschel receiver.
A B-heptomino naturally evolves into a Herschel, as shown above -- but it leaves an extra block behind which must then be cleaned up before the circuit can be used again. To avoid this problem, in most cases a conduit such as BFx59H or BFx46B will be appended to the RF28B.
External links
- RF28B at the Life Lexicon
- My Experience with B-heptominos in Oscillators, by Dave Buckingham