FDO_FRST          187 dev/isa/fd.c   	bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive));
FDO_FRST          208 dev/isa/fd.c   	bus_space_write_1(iot, ioh, fdout, FDO_FRST);
FDO_FRST          500 dev/isa/fd.c   		status |= FDO_FRST | FDO_FDMAEN;
FDO_FRST          120 dev/isa/fdc.c  	bus_space_write_1(iot, ioh, fdout, FDO_FRST);