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/* GXemul: $Id: lptreg.h,v 1.1 2005/11/12 11:34:31 debug Exp $ */ |
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/* $NetBSD: lptreg.h,v 1.8 2005/02/27 00:27:02 perry Exp $ */ |
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|
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#ifndef LPTREG_H |
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#define LPTREG_H |
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|
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/*- |
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* Copyright (c) 1990 The Regents of the University of California. |
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* All rights reserved. |
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* |
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* This code is derived from software contributed to Berkeley by |
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* William Jolitz. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* @(#)lptreg.h 1.1 (Berkeley) 12/19/90 |
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*/ |
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|
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/* |
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* AT Parallel Port (for lineprinter) |
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* Interface port and bit definitions |
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* Written by William Jolitz 12/18/90 |
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* Copyright (C) William Jolitz 1990 |
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*/ |
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|
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/* |
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* On a standard DB25 parallel port, the bits show up as follows: |
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* |
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* 13 12 11 10 9 8 7 6 5 4 3 2 1 |
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* ~S7 S6 S5 S4 D7 D6 D5 D4 D3 D2 D1 D0 ~C0 |
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* |
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* G G G G G G G G ~C3 C2 S3 ~C1 |
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* 25 24 23 22 21 20 19 18 17 16 15 14 |
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* |
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* D7-D0 are output bits from the data register |
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* S7-S3 are input bits read at the status register |
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* C3-C0 are output bits from the control register |
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*/ |
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|
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#define LPT_DATA 0 /* Data to/from printer (R/W) */ |
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|
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#define LPT_STATUS 1 /* Status of printer (R) */ |
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#define LPS_NERR 0x08 /* printer no error */ |
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#define LPS_SELECT 0x10 /* printer selected */ |
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#define LPS_NOPAPER 0x20 /* printer out of paper */ |
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#define LPS_NACK 0x40 /* printer no ack of data */ |
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#define LPS_NBSY 0x80 /* printer no ack of data */ |
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|
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#define LPT_CONTROL 2 /* Control printer (R/W) */ |
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#define LPC_STROBE 0x01 /* strobe data to printer */ |
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#define LPC_AUTOLF 0x02 /* automatic linefeed */ |
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#define LPC_NINIT 0x04 /* initialize printer */ |
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#define LPC_SELECT 0x08 /* printer selected */ |
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#define LPC_IENABLE 0x10 /* printer out of paper */ |
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|
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#define LPT_NPORTS 4 |
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|
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#endif /* LPTREG_H */ |
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