SSTS
if ((bus_space_read_1(iot, ioh, SSTS) & SSTS_BUSY) != 0)
while ((bus_space_read_1(iot, ioh, SSTS) & SSTS_DREG_FULL) != 0)
if ((bus_space_read_1(iot, ioh, SSTS) & SSTS_BUSY) != 0)
if ((bus_space_read_1(iot, ioh, SSTS) &
if ((bus_space_read_1(iot, ioh, SSTS) &
if ((bus_space_read_1(iot, ioh, SSTS) & SSTS_BUSY) != 0)
sstat = bus_space_read_1(iot, ioh, SSTS);
bus_space_read_1(iot, ioh, SSTS),
if ((bus_space_read_1(iot, ioh, SSTS) & SSTS_DREG_EMPTY) == 0)