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 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)lptreg.h 1.1 (Berkeley) 12/19/90 37 * $Id: lptreg.h,v 1.2 1993/05/22 08:01:32 cgd Exp $ 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 #define lpt_data 0 /* Data to/from printer (R/W) */ 48 49 #define lpt_status 1 /* Status of printer (R) */ 50 #define LPS_NERR 0x08 /* printer no error */ 51 #define LPS_SEL 0x10 /* printer selected */ 52 #define LPS_OUT 0x20 /* printer out of paper */ 53 #define LPS_NACK 0x40 /* printer no ack of data */ 54 #define LPS_NBSY 0x80 /* printer no ack of data */ 55 56 #define lpt_control 2 /* Control printer (R/W) */ 57 #define LPC_STB 0x01 /* strobe data to printer */ 58 #define LPC_AUTOL 0x02 /* automatic linefeed */ 59 #define LPC_NINIT 0x04 /* initialize printer */ 60 #define LPC_SEL 0x08 /* printer selected */ 61 #define LPC_ENA 0x10 /* printer out of paper */ 62