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Eden and my status
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H.G.Muller



Joined: 10 Mar 2006
Posts: 12911
Location: Amsterdam
PostPost subject: Re: Eden and my status    Posted: Mon Apr 23, 2007 12:54 pm Reply to topic Reply with quote
nczempin wrote:
Instead, in my quest for knowledge in areas I have no clue about, I have ordered the Pico Edition of the XGamestation (http://www.xgamestation.com/view_product.php?id=34), a "retro" game console that you can build yourself. I'm planning to write a chess program for it, just to see what I can achieve with only 2k of memory, in SX28 assembly code.

It would be a really first-class job if you could pull that off. The problem doesn't seem so much the 2K program memory, but that these things only seem to have 136 bytes of data memory. That is really tight for a chess program. I vaguely seem to remember that Frans Morsch once wrote a Chess program for a similar chip, in the early '90s.

In 1980 I did write a chess program for a 6800 CPU that could run in 2KB of RAM. Program and data had to share that, but the data could take a larger fraction of that, and the program could draw on the system ROM for I/O functions. And that program (Usurpator I) did not implement castling and e.p., nor move-legality checking.

Later I developed a fully FIDE compliant Chess program for 6502, (Usurpator II), that needed 4KB to run (program+data), and I then proceeded building it into a matchbox. There I used an 8KB RAM chip, as in addition to the program I had to add all I/O software as well.
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Subject Author Date/Time
Eden and my status nczempin Thu Apr 19, 2007 2:08 pm
      Re: Eden and my status Zlaire Thu Apr 19, 2007 2:46 pm
            Re: Eden and my status nczempin Thu Apr 19, 2007 3:35 pm
                  Re: Eden and my status Jim Ablett Thu Apr 19, 2007 4:16 pm
            Re: Eden and my status H.G.Muller Thu Apr 19, 2007 4:02 pm
                  Re: Eden and my status NKOTB Thu Apr 19, 2007 7:48 pm
      Re: Eden and my status Dan Andersson Thu Apr 19, 2007 8:00 pm
            Re: Eden and my status nczempin Fri Apr 20, 2007 8:23 am
      Re: Eden and my status Dann Corbit Fri Apr 20, 2007 4:48 am
            Re: Eden and my status nczempin Fri Apr 20, 2007 8:20 am
      Re: Eden and my status Roman Hartmann Sun Apr 22, 2007 6:43 pm
      Re: Eden and my status H.G.Muller Mon Apr 23, 2007 12:54 pm
            Re: Eden and my status nczempin Tue Apr 24, 2007 4:34 pm
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