XL_CMD_TX_SET_START 1473 dev/ic/xl.c    			    XL_CMD_TX_SET_START|sc->xl_tx_thresh);
XL_CMD_TX_SET_START 2001 dev/ic/xl.c    	CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_SET_START|sc->xl_tx_thresh);