LMS_SIGN
if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x0c)
bus_space_write_1(iot, ioh, LMS_SIGN, 0x50);
if (bus_space_read_1(iot, ioh, LMS_SIGN) != 0x50)
bus_space_write_1(iot, ioh, LMS_SIGN, 0x0c);