Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/lptreg.h
Version:
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1 /* $OpenBSD: lptreg.h,v 1.4 2003/06/02 23:28:02 millert Exp $ */ 2 /* $NetBSD: lptreg.h,v 1.4 1994/10/27 04:17:56 cgd Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)lptreg.h 1.1 (Berkeley) 12/19/90 36 */ 37 38 /* 39 * AT Parallel Port (for lineprinter) 40 * Interface port and bit definitions 41 * Written by William Jolitz 12/18/90 42 * Copyright (C) William Jolitz 1990 43 */ 44 45 #define lpt_data 0 /* Data to/from printer (R/W) */ 46 47 #define lpt_status 1 /* Status of printer (R) */ 48 #define LPS_NERR 0x08 /* printer no error */ 49 #define LPS_SELECT 0x10 /* printer selected */ 50 #define LPS_NOPAPER 0x20 /* printer out of paper */ 51 #define LPS_NACK 0x40 /* printer no ack of data */ 52 #define LPS_NBSY 0x80 /* printer no ack of data */ 53 54 #define lpt_control 2 /* Control printer (R/W) */ 55 #define LPC_STROBE 0x01 /* strobe data to printer */ 56 #define LPC_AUTOLF 0x02 /* automatic linefeed */ 57 #define LPC_NINIT 0x04 /* initialize printer */ 58 #define LPC_SELECT 0x08 /* printer selected */ 59 #define LPC_IENABLE 0x10 /* printer out of paper */ 60 61 #define LPT_NPORTS 4
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