Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!pt.cs.cmu.edu!b.gp.cs.cmu.edu!Ralf.Brown@B.GP.CS.CMU.EDU
From: Ralf.Brown@B.GP.CS.CMU.EDU
Newsgroups: comp.sys.ibm.pc
Subject: Re: Turbo Pascal Delay Procedure
Message-ID: <261f38a9@ralf>
Date: 8 Apr 90 13:12:09 GMT
Sender: ralf@b.gp.cs.cmu.edu
Organization: Carnegie Mellon University School of Computer Science
Lines: 17
In-Reply-To: <261CDED5.17827@maccs.dcss.mcmaster.ca>

In article <261CDED5.17827@maccs.dcss.mcmaster.ca>, cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn) wrote:
}   The delay functions in Turbo C and Turbo Pascal use the DOS call to get
}DOs's time.  This is updated at about 18.2 Hz, so the clock is only accurate
}to about 0.05 second resolution.

The TC and TP delay functions use a delay loop which is calibrated on the first
call (TC) or at program startup (TP).  It allows delays to millisecond
precision with a fair amount of accuracy, provided you don't have some other
code stealing time (particularly during the one clock-tick calibration
period).

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