Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Crafty and single-computer winboard matches

Author: Vincent Lejeune

Date: 03:14:23 10/08/99

Go up one level in this thread


On October 08, 1999 at 04:16:57, Christophe Theron wrote:

>On October 08, 1999 at 03:42:54, Dave Gomboc wrote:
>
>>On October 07, 1999 at 23:29:05, Christophe Theron wrote:
>>
>>>That's a real problem on PC.
>>>
>>>The timer clicks 65536 times in 1 hour, which makes something close to 18.2
>>>times per second, or a 0.05s timer resolution.
>>>
>>>This numbers come from the prehistoric IBM PC 4.77MHz and have never been
>>>changed in 20 years, for compatibility reasons.
>>>
>>>Even Windows programmers did not dare to change this. You have time functions in
>>>Windows, they returns values in milliseconds, but still the resolution is about
>>>0.05s!!!
>>
>>Use performance tick counts if you develop for Win32.  (Actually, I am not 100%
>>sure that Win98 supports them. :-(  WinNT does for sure.)  Their resolution is
>>very good.
>>
>>Dave
>
>Not sure this works. In the experiences I have done, the timer resolution was
>always 0.05s. I'm pressimistic about getting something more accurate under
>Windows 9x.
>
>This is not a big problem anyway...
>
>
>    Christophe

I've tested the gettickcount() Win32 api, it's documented as have a 1
millisecond time resolution and it have it effectivly.

The win32 functions are usable in all Windows programming language (C++ (Borland
and Microsoft), Delphi, ...)



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.