FDREG77_DOR
bus_space_write_1(t, h, FDREG77_DOR, dor | FDO_EJ);
bus_space_write_1(t, h, FDREG77_DOR, FDO_FRST | FDO_DS);
bus_space_write_1(t, h, FDREG77_DOR,
bus_space_write_1(t, h, FDREG77_DOR, FDO_FRST | FDO_DS);
bus_space_write_1(t, h, FDREG77_DOR, FDO_FDMAEN | FDO_MOEN(0));
bus_space_write_1(t, h, FDREG77_DOR,
FDREG77_DOR, status);