Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ppbus/lpt.h
Version:
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1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Copyright (c) 1997, 1999 Nicolas Souchu 9 * All rights reserved. 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * Distantly from : 33 * @(#)lptreg.h 1.1 (Berkeley) 12/19/90 34 * Id: lptreg.h,v 1.6 1997/02/22 09:36:52 peter Exp 35 * From Id: nlpt.h,v 1.3 1999/01/10 12:04:54 nsouch Exp 36 * 37 * $FreeBSD$ 38 */ 39 40 /* 41 * AT Parallel Port (for lineprinter) 42 * Interface port and bit definitions 43 * Written by William Jolitz 12/18/90 44 * Copyright (C) William Jolitz 1990 45 */ 46 47 #ifndef __LPT_H 48 #define __LPT_H 49 50 /* machine independent definitions, it shall only depend on the ppbus 51 * parallel port model */ 52 53 #define LPS_NERR 0x08 /* printer no error */ 54 #define LPS_SEL 0x10 /* printer selected */ 55 #define LPS_OUT 0x20 /* printer out of paper */ 56 #define LPS_NACK 0x40 /* printer no ack of data */ 57 #define LPS_NBSY 0x80 /* printer no ack of data */ 58 59 #define LPC_STB 0x01 /* strobe data to printer */ 60 #define LPC_AUTOL 0x02 /* automatic linefeed */ 61 #define LPC_NINIT 0x04 /* initialize printer */ 62 #define LPC_SEL 0x08 /* printer selected */ 63 #define LPC_ENA 0x10 /* enable IRQ */ 64 65 #endif
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