FDSTS
i = bus_space_read_1(iot, ioh, FDSTS) &
while ((bus_space_read_1(iot, ioh, FDSTS) & NE7_DIO) && i-- > 0);
while ((bus_space_read_1(iot, ioh, FDSTS) & NE7_RQM) == 0 && i-- > 0);