1 | /* $NetBSD: lptreg.h,v 1.10 2006/05/02 08:31:02 martin Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1990 The Regents of the University of California. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to Berkeley by |
8 | * William Jolitz. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * 3. Neither the name of the University nor the names of its contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | * @(#)lptreg.h 1.1 (Berkeley) 12/19/90 |
35 | */ |
36 | |
37 | /* |
38 | * AT Parallel Port (for lineprinter) |
39 | * Interface port and bit definitions |
40 | * Written by William Jolitz 12/18/90 |
41 | * Copyright (C) William Jolitz 1990 |
42 | */ |
43 | |
44 | /* |
45 | * On a standard DB25 parallel port, the bits show up as follows: |
46 | * |
47 | * 13 12 11 10 9 8 7 6 5 4 3 2 1 |
48 | * S4 S5 ~S7 S6 D7 D6 D5 D4 D3 D2 D1 D0 ~C0 |
49 | * |
50 | * G G G G G G G G ~C3 C2 S3 ~C1 |
51 | * 25 24 23 22 21 20 19 18 17 16 15 14 |
52 | * |
53 | * D7-D0 are output bits from the data register |
54 | * S7-S3 are input bits read at the status register |
55 | * C3-C0 are output bits from the control register |
56 | */ |
57 | |
58 | #define lpt_data 0 /* Data to/from printer (R/W) */ |
59 | |
60 | #define lpt_status 1 /* Status of printer (R) */ |
61 | #define LPS_NERR 0x08 /* printer no error */ |
62 | #define LPS_SELECT 0x10 /* printer selected */ |
63 | #define LPS_NOPAPER 0x20 /* printer out of paper */ |
64 | #define LPS_NACK 0x40 /* printer no ack of data */ |
65 | #define LPS_NBSY 0x80 /* printer not busy */ |
66 | |
67 | #define lpt_control 2 /* Control printer (R/W) */ |
68 | #define LPC_STROBE 0x01 /* strobe data to printer */ |
69 | #define LPC_AUTOLF 0x02 /* automatic linefeed */ |
70 | #define LPC_NINIT 0x04 /* initialize printer */ |
71 | #define LPC_SELECT 0x08 /* printer selected */ |
72 | #define LPC_IENABLE 0x10 /* printer out of paper */ |
73 | |
74 | #define LPT_NPORTS 4 |
75 | |