1 /* $NetBSD: lptreg.h,v 1.6 2001/01/06 17:16:19 nathanw 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)lptreg.h 1.1 (Berkeley) 12/19/90 39 */ 40 41 /* 42 * AT Parallel Port (for lineprinter) 43 * Interface port and bit definitions 44 * Written by William Jolitz 12/18/90 45 * Copyright (C) William Jolitz 1990 46 */ 47 48 /* 49 * On a standard DB25 parallel port, the bits show up as follows: 50 * 51 * 13 12 11 10 9 8 7 6 5 4 3 2 1 52 * ~S7 S6 S5 S4 D7 D6 D5 D4 D3 D2 D1 D0 ~C0 53 * 54 * G G G G G G G G ~C3 C2 S3 ~C1 55 * 25 24 23 22 21 20 19 18 17 16 15 14 56 * 57 * D7-D0 are output bits from the data register 58 * S7-S3 are input bits read at the status register 59 * C3-C0 are output bits from the control register 60 */ 61 62 #define lpt_data 0 /* Data to/from printer (R/W) */ 63 64 #define lpt_status 1 /* Status of printer (R) */ 65 #define LPS_NERR 0x08 /* printer no error */ 66 #define LPS_SELECT 0x10 /* printer selected */ 67 #define LPS_NOPAPER 0x20 /* printer out of paper */ 68 #define LPS_NACK 0x40 /* printer no ack of data */ 69 #define LPS_NBSY 0x80 /* printer no ack of data */ 70 71 #define lpt_control 2 /* Control printer (R/W) */ 72 #define LPC_STROBE 0x01 /* strobe data to printer */ 73 #define LPC_AUTOLF 0x02 /* automatic linefeed */ 74 #define LPC_NINIT 0x04 /* initialize printer */ 75 #define LPC_SELECT 0x08 /* printer selected */ 76 #define LPC_IENABLE 0x10 /* printer out of paper */ 77 78 #define LPT_NPORTS 4 79