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Subject: Re: AMD's MMX support?

Author: Ernst Walet

Date: 23:53:57 10/31/01

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I asked Frans Morsch at the Dutch Open Championship what the difference was
between the two engines.  He told me that he uses the MMX registers for bitboard
functions, as one can program 2 MMX registers as 64 bit register.  I understood
also that the NO MMX version is closer to the Fritz6 engine than to the Fritz7
one.

Ernst.


On November 01, 2001 at 02:07:45, Jouni Uski wrote:

>On October 31, 2001 at 17:16:13, Mike S. wrote:
>
>>On October 31, 2001 at 16:24:05, Roy Eassa wrote:
>>
>>>Total                 73.5 – 86.5    98.0 – 62.0
>>
>>Meanwhile, Bertil pointed out that this could have to do with the MMX support of
>>the CPU.
>>
>>Do some of the experts here know, if the K6 has MMX support (and if, is it
>>slower than that of the Intel CPUs)? This could be the reason, or one of them,
>>for these big differences in the match results.
>>
>>Did other chess progammers utilize MMX code for their engines yet? I assume it
>>has to do with that SIMD instructions (?).
>>
>>Regards,
>>M.Scheidl
>
>I quess no MMX is simply "no Man Machine eXtension".
>
>Jouni



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