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Diffstat (limited to 'static/netbsd/man4/ppi.4')
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1 files changed, 79 insertions, 0 deletions
diff --git a/static/netbsd/man4/ppi.4 b/static/netbsd/man4/ppi.4 new file mode 100644 index 00000000..1b2d812f --- /dev/null +++ b/static/netbsd/man4/ppi.4 @@ -0,0 +1,79 @@ +.\" $NetBSD: ppi.4,v 1.4 2004/01/23 19:36:23 wiz Exp $ +.\" +.\" Copyright (c) 1997 +.\" Michael Smith +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer as +.\" the first lines of this file unmodified. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' +.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD: src/share/man/man4/ppi.4,v 1.4.2.7 2001/12/17 11:30:12 ru Exp $ +.\" +.Dd December 29, 2003 +.Dt PPI 4 +.Os +.Sh NAME +.Nm ppi +.Nd "user-space interface to ppbus parallel port" +.Sh SYNOPSIS +.Cd "ppi* at ppbus?" +.Pp +Minor numbering: Unit numbers correspond directly to +.Xr ppbus 4 +numbers. +.Sh DESCRIPTION +The +.Nm +driver provides a convenient means for user applications to manipulate +the state of the parallel port, enabling easy low-speed I/O operations +without the security problems inherent with the use of the +.Pa /dev/io +interface. +.Pp +The programming interface is described in +.Xr ppi 9 . +.Sh SEE ALSO +.Xr atppc 4 , +.Xr io 4 , +.Xr ppbus 4 , +.Xr ppi 9 +.Sh HISTORY +.Nm +originally appeared in +.Fx . +.Sh AUTHORS +This manual page is based on the +.Fx +.Nm ppi +manual page and was updated for the +.Nx +port by +.An Gary Thorpe . +.Sh BUGS +The inverse sense of signals is confusing. +.Pp +The +.Fn ioctl +interface is slow, and there is no way (yet) to chain multiple +operations together. +.Pp +The headers required for user applications are not installed as +part of the standard system. |
