LPS_NACK          100 dev/ic/lpt.c   #define	LPS_INVERT	(LPS_SELECT|LPS_NERR|LPS_NBSY|LPS_NACK)
LPS_NACK          101 dev/ic/lpt.c   #define	LPS_MASK	(LPS_SELECT|LPS_NERR|LPS_NBSY|LPS_NACK|LPS_NOPAPER)