DLCR_TX_STAT
bus_space_write_1(bst, bsh, DLCR_TX_STAT, 0xff);
if ((tstat = bus_space_read_1(bst, bsh, DLCR_TX_STAT)) != 0) {
if (bus_space_read_1(bst, bsh, DLCR_TX_STAT)
tstat = bus_space_read_1(bst, bsh, DLCR_TX_STAT);
bus_space_write_1(bst, bsh, DLCR_TX_STAT, tstat);
bus_space_read_1(bst, bsh, DLCR_TX_STAT),