3BSD/usr/include/sys/cons.m

#
#	cons.m	2.1	1/5/80
#
#
# VAX console interface registers
#

	.set	RXCS_IE,0x40		# receiver interrupt enable
	.set	RXCS_DONE,0x80		# receiver done
	.set	RXDB_DATA,0xff		# received character
	.set	RXDB_ID,0xf00		# channel id
	.set	RXDB_ERR,0x80000000	# receiver error

	.set	TXCS_IE,0x40		# transmitter interrupt enable
	.set	TXCS_RDY,0x80		# transmitter ready for next char
	.set	TXCS_BRDY,7		# bit number of TXCS_RDY
	.set	TXDB_DATA,0xff		# transmitter byte
	.set	TXDB_ID,0xf00		# channel id