RTC interrupt using SYS/BIOS

Hi,

  I am trying to write a simple 1 time per second RTC interrupt while using SYS/BIOS.  It seems that when I do configure the RTC interrupt, I go off into the weeds when I call a Task_sleep function.  I guess Bios uses Interrupt 14.  WHy is there a conflict.  I am loading the RTC interrupt using these functions:

IntRegister(C674X_MASK_INT7, RTCIsr);

IntEventMap(C674X_MASK_INT7, SYS_INT_RTC_IRQS);  mapped to 63

IntEnable(C674X_MASK_INT7);

/* Enabling RTC interrupts. Configuring RTC to interrupt every second.*/

    RTCIntTimerEnable(SOC_RTC_0_REGS, RTC_INT_EVERY_SECOND);

Any thoughts?

Will