SCOOP_IMR
bus_space_write_2(iot, scooph, SCOOP_IMR,
bus_space_write_2(iot, scooph, SCOOP_IMR, 0x0000);
bus_space_write_2(iot, scooph, SCOOP_IMR, 0x00c4);
bus_space_write_2(iot, scooph, SCOOP_IMR, 0x00ce);
imr = ioreg16_read(baseaddr + SCOOP_IMR);