How to Maintain Time, Independent of CPU Speed

ID: Q12131

The information in this article applies to:

Microsoft C for MS-DOS, versions 6.0, 6.0a, and 6.0ax
Microsoft C/C++ for MS-DOS, versions 7.0, 7.0a
Microsoft Visual C++ for Windows, 16-bit edition, versions 1.0, 1.5

To pause an application for a specific amount of time, independent of the CPU speed, create a routine that processes the timer tick interrupt. The frequency of timer ticks is the same all machines (approximately 18.2 per second when interrupts are enabled). The timer tick is Interrupt 1Ch.

Additional query words: kbinf 1.00 1.50 6.00 6.00a 6.00ax 7.00 7.00a


Keywords          : kb16bitonly 
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Last Reviewed: July 30, 1999