2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * form: @(#)lptreg.h 1.1 (Berkeley) 12/19/90
13 * AT Parallel Port (for lineprinter)
14 * Interface port and bit definitions
15 * Written by William Jolitz 12/18/90
16 * Copyright (C) William Jolitz 1990
19 #define lpt_data 0 /* Data to/from printer (R/W) */
21 #define lpt_status 1 /* Status of printer (R) */
22 #define LPS_NERR 0x08 /* printer no error */
23 #define LPS_SEL 0x10 /* printer selected */
24 #define LPS_OUT 0x20 /* printer out of paper */
25 #define LPS_NACK 0x40 /* printer no ack of data */
26 #define LPS_NBSY 0x80 /* printer no ack of data */
28 #define lpt_control 2 /* Control printer (R/W) */
29 #define LPC_STB 0x01 /* strobe data to printer */
30 #define LPC_AUTOL 0x02 /* automatic linefeed */
31 #define LPC_NINIT 0x04 /* initialize printer */
32 #define LPC_SEL 0x08 /* printer selected */
33 #define LPC_ENA 0x10 /* printer out of paper */