1.\" $NetBSD: lptctl.8,v 1.10 2008/04/30 13:11:02 martin Exp $ 2.\" 3.\" Copyright (c) 2004 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Gary Thorpe. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 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. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd February 2, 2004 31.Dt LPTCTL 8 32.Os 33.Sh NAME 34.Nm lptctl 35.Nd manipulate lpt devices 36.Sh SYNOPSIS 37.Nm lptctl Ar device Op Ar command Op Ar ... 38.Sh DESCRIPTION 39.Nm 40is used to manipulate lpt devices so that a user can change how a 41printer that is attached to a parallel port works. 42If no command-argument pairs are specified, the status of the device 43is printed to standard output. 44The status information is also output after commands are carried out. 45.Sh DEVICE COMMANDS 46Multiple command-argument pairs can be specified. 47Available commands are: 48.Bl -item 49.It 50.Cm mode 51.Ar standard | nibble | ps2 | fast | ecp | epp 52.Pp 53Sets port to use a mode of operation: standard centronics mode 54(standard), nibble mode, bidirectional mode (ps2), fast centronics 55mode (fast), enhanced capabilities port mode (ecp), or enhanced 56parallel port mode (epp). 57.It 58.Cm dma 59.Ar yes | no 60.Pp 61Enables or disables DMA. 62Note DMA is only used in some advanced 63modes such as ECP, and only if interrupts are enabled too. 64.It 65.Cm ieee 66.Ar yes | no 67.Pp 68Enables or disables the use of 69.Tn IEEE 1284 70negotiations during mode changes and channel direction changes. 71.It 72.Cm intr 73.Ar yes | no 74.Pp 75Enables or disables use of interrupts for port operation. 76If interrupts are disabled, polling is used for data transfers. 77Default setting depends on device, but polling is commonly preferred. 78.It 79.Cm prime 80.Ar yes | no 81.Pp 82Enables (default) or disables printer initialization sequence 83on device open. 84Note the initialization sequence is never done 85on open of control lpt device. 86.It 87.Cm autolf 88.Ar yes | no 89.Pp 90Enables or disables (default) automatic LF on CR for data transfers. 91.El 92.Sh EXIT STATUS 93.Nm 94returns 0 on success, \*[Gt]0 on failure. 95.Sh FILES 96.Bl -item 97.It 98.Pa /dev/lpt?ctl 99- printer port control devices 100.It 101.Pa /dev/lpt? 102- printer ports 103.El 104.Sh SEE ALSO 105.Xr ioctl 2 , 106.Xr lpt 4 , 107.Xr ppbus 4 108.Sh HISTORY 109A similar utility called 110.Nm lptcontrol 111exists in 112.Fx 113to control the 114.Xr lpt 4 115device. 116While similar in concept, the implementations are independent. 117.Nm 118was added in 119.Nx 2.0 . 120.Sh AUTHORS 121This man page and the 122.Nm 123utility were written by Gary Thorpe. 124