1 .\" $NetBSD: lpt.4,v 1.7 2004/02/03 21:37:00 jdolecek Exp $
4 .\" Copyright (c) 1993 Christopher G. Demetriou
5 .\" Copyright (c) 1994 Geoffrey M. Rehmet
6 .\" Copyright (c) 1999 Nicolas Souchu
7 .\" All rights reserved.
9 .\" Redistribution and use in source and binary forms, with or without
10 .\" modification, are permitted provided that the following conditions
12 .\" 1. Redistributions of source code must retain the above copyright
13 .\" notice, this list of conditions and the following disclaimer.
14 .\" 2. Redistributions in binary form must reproduce the above copyright
15 .\" notice, this list of conditions and the following disclaimer in the
16 .\" documentation and/or other materials provided with the distribution.
18 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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30 .\" $FreeBSD: src/share/man/man4/lpt.4,v 1.9.2.2 2001/08/17 13:08:38 ru Exp $
37 .Nd generic printer device driver
41 .Cd options LPT_VERBOSE
45 driver is the port of the lpt driver to the
49 The purpose of this driver is to allow parallel port sharing with
50 other parallel devices.
53 for more information about the parallel port bus system.
55 The parallel port bus is reserved by
57 when the printer device is opened and released when the device is
60 Ports can be configured to use interrupts, DMA, IEEE negotiations, and IEEE
61 compliant transfer modes by using the
63 command, with modes depending on the hardware available.
65 .Bl -tag -width "/dev/lpt0xxxx" -compact
69 parallel port control device
77 This driver is derived from the
79 ppbus and also from the historic
85 driver used to assign special meaning for some bits of device minor.
86 This was dropped in ppbus-based
88 in favour of configuration via
91 This manual page was based on the
95 The information has been updated for the