blob: 2605fa0ec1631be0cbb1784bf358b6f53a5e03cd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* %sccs.include.noredist.c%
*
* @(#)lptreg.h 1.1 (Berkeley) 12/19/90
*/
/*
* AT Parallel Port (for lineprinter)
* Interface port and bit definitions
* Written by William Jolitz 12/18/90
* Copyright (C) William Jolitz 1990
*/
#define lpt_data 0 /* Data to/from printer (R/W) */
#define lpt_status 1 /* Status of printer (R) */
#define LPS_NERR 0x08 /* printer no error */
#define LPS_SEL 0x10 /* printer selected */
#define LPS_OUT 0x20 /* printer out of paper */
#define LPS_NACK 0x40 /* printer no ack of data */
#define LPS_NBSY 0x80 /* printer no ack of data */
#define lpt_control 2 /* Control printer (R/W) */
#define LPC_STB 0x01 /* strobe data to printer */
#define LPC_AUTOL 0x02 /* automatic linefeed */
#define LPC_NINIT 0x04 /* initialize printer */
#define LPC_SEL 0x08 /* printer selected */
#define LPC_ENA 0x10 /* printer out of paper */
|
