DosTmrQueryFreq: Difference between revisions
Created page with "==Description== Provides the frequency of the IRQ0 high resolution timer (Intel 8254). ==Syntax== <PRE> #define INCL_DOSPROFILE #include <os2.h> PULONG pulTmrFreq; /* T..." |
m Martini moved page OS2 API:CPI:DosTmrQueryFreq to DosTmrQueryFreq |
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Revision as of 22:44, 19 December 2016
Description
Provides the frequency of the IRQ0 high resolution timer (Intel 8254).
Syntax
#define INCL_DOSPROFILE #include <os2.h> PULONG pulTmrFreq; /* Timer Frequency. */ APIRET rc; /* Return Code. */ rc = DosTmrQueryFreq(pulTmrFreq);
Parameters
- pulTmrFreq (PULONG) - output
- Timer Frequency.
Provides the frequency of the IRQ0 high resolution timer in hertz (timer units/sec).
Return Code
rc (APIRET) - returns
DosTmrQueryFrequency returns the following values:
- 0 NO_ERROR
- 87 ERROR_INVALID_PARAMETER
- 535 ERROR_TMR_NO_DEVICE
- 99 ERROR_DEVICE_IN_USE