NetBSD/sys/dev/ic/lptreg.h

75 lines
3.1 KiB
C

/* $NetBSD: lptreg.h,v 1.8 2005/02/27 00:27:02 perry Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)lptreg.h 1.1 (Berkeley) 12/19/90
*/
/*
* AT Parallel Port (for lineprinter)
* Interface port and bit definitions
* Written by William Jolitz 12/18/90
* Copyright (C) William Jolitz 1990
*/
/*
* On a standard DB25 parallel port, the bits show up as follows:
*
* 13 12 11 10 9 8 7 6 5 4 3 2 1
* ~S7 S6 S5 S4 D7 D6 D5 D4 D3 D2 D1 D0 ~C0
*
* G G G G G G G G ~C3 C2 S3 ~C1
* 25 24 23 22 21 20 19 18 17 16 15 14
*
* D7-D0 are output bits from the data register
* S7-S3 are input bits read at the status register
* C3-C0 are output bits from the control register
*/
#define lpt_data 0 /* Data to/from printer (R/W) */
#define lpt_status 1 /* Status of printer (R) */
#define LPS_NERR 0x08 /* printer no error */
#define LPS_SELECT 0x10 /* printer selected */
#define LPS_NOPAPER 0x20 /* printer out of paper */
#define LPS_NACK 0x40 /* printer no ack of data */
#define LPS_NBSY 0x80 /* printer no ack of data */
#define lpt_control 2 /* Control printer (R/W) */
#define LPC_STROBE 0x01 /* strobe data to printer */
#define LPC_AUTOLF 0x02 /* automatic linefeed */
#define LPC_NINIT 0x04 /* initialize printer */
#define LPC_SELECT 0x08 /* printer selected */
#define LPC_IENABLE 0x10 /* printer out of paper */
#define LPT_NPORTS 4