Author: Rick Hagen
Date: 13:59:00 03/19/05
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On March 19, 2005 at 16:46:37, Terry Giles wrote: >On March 19, 2005 at 16:25:33, Terry Giles wrote: > >>On March 19, 2005 at 13:42:26, William H Rogers wrote: >> >>>I have been playing multiple tournements lately and am now in the process of >>>playing tournements with programs written in Basic. >>>In passing I found that I have a very old program written for the Radio Shack >>>Model 100 portable computer. RS Basic saves programs in a tokenized fashion so >>>the occupy the least amount of space. In this case the program was only about 4k >>>long. When converted to QBasic and expanded it now occupies about 8k. >>>It does not follow 50 move rule or the 3 move repetition and I am not sure if >>>allows captures enpassant but for a tiny program it plays fairley well. >>>I am not sure how to post the program here or I would. If anyone is interested >>>then maybe they can show me how to post the program here. >>>Bill >> >> >>Hi Bill, >> >>Back in the days of the 8 bit processor and particularly the Zilog Z80 a >>software company named Artic Computing created a Chess program which was fully >>functional in 1K of RAM for the Sinclair ZX80/81 computer. Bearing in mind that >>the ZX80/81 computer used a bit of that 1K RAM for its own uses, it is a marvel >>that they managed this feat! >> >>Terry Giles > > >The program was written by David Horne and actually only had 672 bytes of memory >at its disposal! > >Terry Giles Hello Terry, I had that program (on the ZX-81) Wasn't is simply called "chess" ? I remember you could put it in "fast" mode which meant it calculated twice as fast, but the screen went blank until it came up with it's move... Or maybe I just put the "fast" command in the code, can't remember TBH :) Great memories, thanks! Rick PS. I wrote a ELO-calculating program on the ZX-81 at the time (with the 16K RAM-module).
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