Copyright (c) 1993 Christopher G. Demetriou
Copyright (c) 1994 Geoffrey M. Rehmet
Copyright (c) 1999 Nicolas Souchu
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$FreeBSD: src/share/man/man4/lpt.4,v 1.9.2.2 2001/08/17 13:08:38 ru Exp $
.Dd February 3, 2004 .Dt LPT 4 .Os .Sh NAME .Nm lpt .Nd generic printer device driver .Sh SYNOPSIS .Cd "lpt* at ppbus?" .Cd options LPT_DEBUG .Cd options LPT_VERBOSE .Sh DESCRIPTION The .Nm driver is the port of the lpt driver to the .Xr ppbus 4 system.
p The purpose of this driver is to allow parallel port sharing with other parallel devices. See .Xr ppbus 4 for more information about the parallel port bus system.
p The parallel port bus is reserved by .Nm when the printer device is opened and released when the device is closed.
p Ports can be configured to use interrupts, DMA, IEEE negotiations, and IEEE compliant transfer modes by using the .Xr lptctl 8 command, with modes depending on the hardware available. .Sh FILES l -tag -width "/dev/lpt0xxxx" -compact t Pa /dev/lpt? parallel port device t Pa /dev/lpt?ctl parallel port control device .El .Sh SEE ALSO .Xr atppc 4 , .Xr ppbus 4 , .Xr lptctl 8 , .Xr mknod 8 .Sh HISTORY This driver is derived from the .Fx ppbus and also from the historic .Nx drivers.
p The .Nm driver used to assign special meaning for some bits of device minor. This was dropped in ppbus-based .Nm in favour of configuration via .Xr lptctl 8 . .Sh AUTHORS This manual page was based on the .Fx .Nm lpt manual page. The information has been updated for the .Nx port by Gary Thorpe.
Indexes created Wed Sep 24 05:09:52 GMT 2025