SMC_ENABLE_INT
SMC_ENABLE_INT( IM_ALLOC_INT );
SMC_ENABLE_INT( (IM_TX_INT | IM_TX_EMPTY_INT) );
SMC_ENABLE_INT(lp, IM_TX_INT | IM_TX_EMPTY_INT);
SMC_ENABLE_INT(lp, IM_ALLOC_INT);