SIntInstall
SQElemPtr sIntQElemPtr; address of a new element
short theSlot ; value of the slot number
SIntInstall adds a new element to the interrupt queue for a particular card slot on the bus
sIntQElemPtr points to the element being added to the interrupt queue for a given
slot.
theSlot is the location on the bus where the new element is being installed
noErr (0) No error
slotNumErr (-360) invalid slot # error