Run just before the interrupt service routine
Pointer to the
just before the model-level interrupt service routine (either a function-call
subsystem or entire model) is called.
This function must check the status register on the board to determine if the board caused the interrupt. It returns one of the following:
XPC_RUN_ISR — If the function
determines that the board did cause the interrupt, the function must
perform the required operation to stop the board from generating the
interrupt. The function then returns this value.
XPC_DROP_ISR — If the function
determines that the board did not cause the interrupt, this function
returns this value.