U24_SINT
if (bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) {
if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0)
uhastat = bus_space_read_1(iot, ioh, U24_SINT);
bus_space_write_1(iot, ioh, U24_SINT, U24_ICM_ACK);
if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0)