PA_83902_IF
buf[0] = *(vhalf *) PA_83902_IF;
buf[1] = *(vhalf *) PA_83902_IF;
val = *(vhalf *) PA_83902_IF;
*(vhalf *) PA_83902_IF = ((half) buf[1] << 8) | buf[0];
*(vhalf *) PA_83902_IF = ((half) buf[0] << 8) | buf[1];