Changes

Jump to: navigation, search

Mark Taylor

44 bytes added, 12:24, 7 June 2020
no edit summary
=160 Nibble Challenge=
Mark Taylor worked with Levy to produce a program for a [https://en.wikipedia.org/wiki/Hitachi_Ltd. Hitachi] 4-bit [https://en.wikipedia.org/wiki/CMOS CMOS] [https://en.wikipedia.org/wiki/Microcontroller microcontroller]. The [[HMCS4xC|HD44801]] had 2K of 10-bit word [[Memory#ROM|ROM]], '''160''' [[Nibble|nibbles]] (80 bytes) of [[Memory#RAM|RAM]], running at 400 KHz. Levy developed a chess playing algorithm for this chip which played fully legal chess including [[Promotions|pawn promotion]], [[En passant|en passant capturing]], [[Castling|castling]], and even managed mate with KR v K in some versions all in 160 nibbles of RAM. A piece of work that Taylor is still rightly proud of today <ref>[http://www.chesscomputeruk.com/html/chess_computers_-_the_uk_story.html Chess Computers - The UK Story] from [http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]]</ref>. The chip went into a series of small portable [[Saitek|SciSys]] machines - [[Mini Chess]], [[Mini Chess#Junior|Junior Chess]] and [[Mini Chess#Graduate|Graduate Chess]], all released in early 1981. The 4-bit program also initiated [[Eric White|Eric White's]] involvement in computer chess business and long time collaboration with Levy, when [https://en.wikipedia.org/wiki/Hong_Kong Hong Kong] based manufacturer ''White and Allcock'', forerunner of [[Newcrest Technology]] introduced the CXG brand with [[CXG Sensor Computachess]] in 1981 <ref>[http://www.schach-computer.info/wiki/index.php/CXG_Pocket_Chess CXG Pocket Chess] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref> <ref>[http://www.schach-computer.info/wiki/index.php/CXG_Sensor_Computachess CXG Sensor Computachess] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref>.
=Philidor=
=References=
<references />
 
'''[[People|Up one level]]'''
[[Category:Chess Programmer|Taylor]]

Navigation menu