Copyright (c) 2004 The NetBSD Foundation, Inc.
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by Gary Thorpe.
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.Dd February 2, 2004 .Dt LPTCTL 8 .Os .Sh NAME .Nm lptctl .Nd manipulate lpt devices .Sh SYNOPSIS .Nm lptctl Ar device Op Ar command Op Ar ... .Sh DESCRIPTION .Nm is used to manipulate lpt devices so that a user can change how a printer that is attached to a parallel port works. If no command-argument pairs are specified, the status of the device is printed to standard output. The status information is also output after commands are carried out. .Sh DEVICE COMMANDS Multiple command-argument pairs can be specified. Available commands are: l -item t .Cm dma .Ar on | off
p Enables or disables DMA. t .Cm mode .Ar standard | nibble | ps2 | fast | ecp | epp
p Sets port to use a mode of operation: standard centronics mode (standard), nibble mode, bidirectional mode (ps2), fast centronics mode (fast), enhanced capabilities port mode (ecp), or enhanced parallel port mode (epp). t .Cm ieee .Ar yes | no
p Enables or disables the use of .Tn IEEE 1284 negotiations during mode changes and channel direction changes. t .Cm intr .Ar yes | no
p Enables or disables use of interrupts for port operation. If interrupts are disabled, polling is used for data transfers. Default setting depends on device, but polling is commonly preferred. t .Cm prime .Ar yes | no
p Enables (default) or disables printer initialization sequence on device open. Note the initialization sequence is never done on open of control lpt device. t .Cm autolf .Ar yes | no
p Enables or disables (default) automatic LF on CR for data transfers. .El .Sh EXIT STATUS .Nm returns 0 on success, \*[Gt]0 on failure. .Sh FILES l -item t
a /dev/lpt?ctl - printer port control devices t
a /dev/lpt? - printer ports .El .Sh SEE ALSO .Xr ioctl 2 , .Xr lpt 4 , .Xr ppbus 4 .Sh HISTORY A similar utility called .Nm lptcontrol exists in .Fx to control the .Xr lpt 4 device. While similar in concept, the implementations are independent. .Nm was added in .Nx 2.0 . .Sh AUTHORS This man page and the .Nm utility were written by Gary Thorpe.