MID_INTACK       1016 dev/ic/midway.c     reg = EN_READ(sc, MID_INTACK); 
MID_INTACK       1042 dev/ic/midway.c     reg = EN_READ(sc, MID_INTACK); 
MID_INTACK       2348 dev/ic/midway.c   reg = EN_READ(sc, MID_INTACK);