Author: Christophe Theron
Date: 18:08:29 01/02/01
Go up one level in this thread
On January 02, 2001 at 17:29:46, Tord Romstad wrote:
>On January 02, 2001 at 09:06:20, Christophe Theron wrote:
>
>>On January 02, 2001 at 06:52:46, Tom Glenn wrote:
>>
>>>On January 01, 2001 at 19:29:38, Christophe Theron wrote:
>>>
>>>>>>Rank Program C rating
>>>>>> 124 Fidelity Mach III 68000 16 MHz 1993 14 2410 52% 1980
>>>
>>>>
>>>
>>>>
>>>>I also think (correct me if I'm wrong) that the Mach III has hash tables, and
>>>>Chess Genius for Palm has none.
>>>
>>>
>>>
>>>........ the old ad says... "includes hash tables 8,000 positions"
>>>
>>> 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 think the answer is between the two following lines:
>>
>> 86 Mephisto Lyon 68030 36 MHz 2151 28 -27 716 68% 2016
>> 111 Mephisto Berlin 68 000 12 MHz 2015 22 -22 986 57% 1966
>>
>>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) ?"
Christophe
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