ibool PMAPI PM_setRealTimeClockHandler(PM_intHandler th,int frequency)
{
/* Save the old CMOS real time clock values */
_PM_oldCMOSRegA = _PM_readCMOS(0x0A);
_PM_oldCMOSRegB = _PM_readCMOS(0x0B);
/* Set the real time clock interrupt handler */
getISR(0x70, &_PM_prevRTC, &_PM_prevRealRTC);
_PM_rtcHandler = th;
setISR(0x70, _PM_rtcISR);
/* Program the real time clock default frequency */
PM_setRealTimeClockFrequency(frequency);
/* Unmask IRQ8 in the PIC2 */
_PM_oldRTCPIC2 = PM_inpb(0xA1);
PM_outpb(0xA1,_PM_oldRTCPIC2 & 0xFE);
return true;
}
/****************************************************************************
REMARKS:
Restarts the real time clock ticking. Note that when we are actually using
IRQ0 instead, this functions does nothing.
****************************************************************************/
void PMAPI PM_restartRealTimeClock(
int frequency)
{
PM_setRealTimeClockFrequency(frequency);
}
/****************************************************************************
REMARKS:
Stops the real time clock from ticking. Note that when we are actually
using IRQ0 instead, this functions does nothing (unlike calling
PM_setRealTimeClockFrequency directly).
****************************************************************************/
void PMAPI PM_stopRealTimeClock(void)
{
PM_setRealTimeClockFrequency(0);
}