Excalibur LCD Chess

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Excalibur LCD Chess, (Excalibur 375-1 LCD Computer Chess) a dedicated travel chess computer by Excalibur Electronics, released in 2000. The computer consists of a Samsung KS57C21516 controller with a SAM47 4-bit core at 1.5 MHz with 16 KiB ROM and 544 nibbles of RAM, and a LCD board and button panel including the central eight-direction rocker button to interact with the user. The program and the new housing was developed and designed by Ron Nelson during a sabbatical in late 1999. The minimalistic 4-bit program performed sophisticated PV move and killer move ordering heuristics , to become the base program used for subsequent Excalibur models like King Arthur, Igor II, the Excalibur Chess Station, LCD Chess & Checkers and many others.

=Talking LCD Chess= Excalibur's Talking LCD Chess on the other hand was a relative of the 6502 line of Nelson programs as used in Ivan II The Conqueror and Alexandra The Great. It was released in 2002 with a Sunplus SPL191B-063A controller at 3 MHz with 256 KiB ROM and 704 bytes RAM.

=LCD Chess Express= A further model of Nelson's 6502 line, LCD Chess Express, released in 2005 with a Sunplus SPLB33A controller at 4MHz, 64 KiB ROM 1216 bytes RAM.

=See also=
 * Alexandra The Great
 * Excalibur Chess Station
 * Excalibur Igor
 * Excalibur King Arthur
 * Ivan II The Conqueror

=Manual=
 * Excalibur LCD Chess Operating Manual | ManualsLib, pdf hosted by Chris Kantack

=Forum Posts=
 * Ron Nelson by ChessChallenger, Hiarcs Forum, December 23, 2015
 * Ron Nelson by ChessChallenger, Hiarcs Forum, December 23, 2015 » Fidelity Electronics, Sidney Samole
 * Re: Ron Nelson by ChessChallenger, Hiarcs Forum, December 24, 2015


 * Ron Nelson & Talking Chess Computers by ChessChallenger, Hiarcs Forum, January 02, 2016
 * Excalibur Chess Products Ron Nelson designed/programmed by ChessChallenger, Hiarcs Forum, January 05, 2016
 * Chess Products Ron Nelson designed/programmed by ChessChallenger, Hiarcs Forum, January 11, 2016

=External Links=

Chess Computer

 * Excalibur Model 375-1 LCD Computer Chess (2001) Electronic Travel Chess Computer, The Spacious Mind
 * Excalibur Model 375-2 LCD Chess & Checkers (2003) Electronic Travel Chess Computer, The Spacious Mind
 * Excalibur LCD Chess - Schachcomputer.info Wiki (German)
 * Excalibur LCD Chess Express - Schachcomputer.info Wiki
 * Excalibur LCD Chess Page by Tobias Giesen
 * Excalibur LCD Chess vs. GameBoy ChessMaster by Chris Kantack
 * alking LCD Chess - A Review by Chris Kantack
 * Шахматный компьютер LCD Excalibur 375, February 5, 2019, YouTube Video

Misc

 * Excalibur - Wiktionary
 * Excalibur from Wikipedia
 * LCD from Wikipedia

=References= Up one level