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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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    The actual duration of the wait is always an integral multiple of 976
    microseconds.
 
    Use of this function allows programmed, hardware-independent delays at a
    finer resolution than can be obtained through use of the MS-DOS Get Time
    function (Int 21H Function 2CH, which returns time in hundredths of a
    second).
 
    See also Int 15H Function 83H, which triggers a semaphore after a
    specified interval but does not suspend the calling program.
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