Author: Tord Romstad
Date: 04:48:12 01/03/01
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On January 02, 2001 at 21:08:29, Christophe Theron wrote: >On January 02, 2001 at 17:29:46, Tord Romstad wrote: > >>On January 02, 2001 at 09:06:20, Christophe Theron wrote: >> >>>I take Lang's programs as reference as they are known to be well optimized for >>>680x0 processors. >>> >>>The DragonBall processor is close to a 68000 (at the same clock frequency). So >>>the Mephisto Lyon @36MHz would be above, and the Mephisto Berlin is clearly >>>below. >>> >>>My best guess is the rating of the Berlin on 68000 @12MHz + the elo difference >>>you get by speeding up the processor to 33MHz (that makes >>>70*log(33/12)/log(2)=102 elo points). >>> >>>So it would be rated 2117 elo (SSDF). This does not account for software >>>improvements that have been done since the Berlin, maybe 50 to 100 additional >>>points? I don't know... >> >>I am afraid the truth is precisely the opposite --- the chess engine in >>Chess Genius for Palm is probably significantly weaker than the one in >>Mephisto Berlin. The engine in Chess Genius, I have read, is the engine >>of the very old Mephisto Roma (1987, I think), which was the last Lang >>program which did not use transposition tables. The engine in Mepisto >>Berlin is basically a port of Chess Genius 1 for the PC (released some time >>during the years 1991--1993). >> >>The best way to estimate the strength of Genius for Palm is proably to >>look up the rating of Mephisto Roma on the SSDF list and add some points >>for the faster hardware. >> >>Please note that this is all based 100% on what I have read from various >>sources, I have never seen Genius for Palm in action myself. >> >>Tord > > > >You are absolutely right in what you say, but I think you should keep in mind >that I was simply trying to answer the following question: > >"In theory , what could a program be rated (SSDF) on a device like > this , given the physical limitations ? (33MHz , and if the total > program isn't over 4-5 mg) ?" I apologise for the misunderstanding, I was reading too fast. However, I still think you are a little bit too optimistic. Mephisto Berlin did use transposition tables. If I understand correctly, transposition tables are difficult or impossible to implement in PalmOS. Tord
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