| 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 | |