FE_DLCR3
bus_space_write_1(bst, bsh, FE_DLCR3, 0);
bus_space_read_1(bst, bsh, FE_DLCR3),
bus_space_write_1(bst, bsh, FE_DLCR3, 0x00);
bus_space_write_1(bst, bsh, FE_DLCR3, 0x00);
bus_space_write_1(bst, bsh, FE_DLCR3, FE_RMASK);