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Subject: DOS 6.22 VS. 7.0

Author: Thom Perry

Date: 03:35:31 02/07/00

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On February 06, 2000 at 08:13:49, leonid wrote:

>On February 06, 2000 at 06:33:32, Thom Perry wrote:
>
>>On February 05, 2000 at 08:50:21, leonid wrote:
>>
>>>Hello!
>>>
>>>What is real difference in speed between chess game written for DOS and
>>>identical game but done for Windows 32 bits system? Just your idea or some
>>>direct numbers from the game that you tried or wrote.
>>>
>>>Thanks!
>>>Leonid.
>>
>>This doesn't directly answer your question, but I do have some
>>information about MS DOS 6.22 versus the Windows 95 32 bit DOS, which I
>>believe was called DOS 7.0. I was training neural networks using a DOS
>>program, so I logged a training session using DOS 6.22, then DOS 7.0 on a
>>computer that had both systems installed. The training session was 13%
>>faster on DOS 6.22. I assume, therefore, that a DOS chess program will
>>also run faster in DOS 6.22 than DOS 7.0, or whatever the current Windows
>>98 DOS is called.
>
>Pretty strange and curious! How big was your program? But actually I want to
>know if it used that much extended memory or expended memory.
>
>Windows first versions for sure used DOS 7.0, later I don't know. We had even
>for some time DOS 7 from other company but this big company never came with
>upgrade. This last DOS was done probably more to impress the public that for
>real desire to be new system company.
>
>Leonid.

The program I was using is Brainmaker Professional Ver. 3.0.  The
executable is 265K.  It converts the training files to binary files.  My
fact file was 451K, and the test file was 265K.  I think that Brainmaker
runs in extended memory, as there is no disk activity even though I ask
it to generate data files after each cycle.  But I also use disk
caching, so I just occasionally get disk writes during periods of
inactivity.  Anyhow, I was told that 7.0 was faster than 6.22, but this
was not my experience.



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