FIFOSTAT
AIC_MISC(("%02x%02x ", bus_space_read_1(iot, ioh, FIFOSTAT),
amount = bus_space_read_1(iot, ioh, FIFOSTAT)
AIC_MISC(("%02x%02x ", bus_space_read_1(iot, ioh, FIFOSTAT),
xfer = uimin(bus_space_read_1(iot, ioh, FIFOSTAT), n);
bus_space_read_1(iot, ioh, FIFOSTAT),