84 lines
2.9 KiB
Groff
84 lines
2.9 KiB
Groff
.\" Copyright (c) 1990, 1991 The Regents of the University of California.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to Berkeley by
|
|
.\" the Systems Programming Group of the University of Utah Computer
|
|
.\" Science Department.
|
|
.\"
|
|
.\" 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.
|
|
.\" 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.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
|
.\"
|
|
.\" from: @(#)ppi.4 5.2 (Berkeley) 3/27/91
|
|
.\" $Id: ppi.4,v 1.2 1993/08/01 07:56:26 mycroft Exp $
|
|
.\"
|
|
.Dd March 27, 1991
|
|
.Dt PPI 4 hp300
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ppi
|
|
.Nd
|
|
.Tn HP-IB
|
|
printer/plotter interface
|
|
.Sh SYNOPSIS
|
|
.Cd "device ppi0 at hpib0 slave 5"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm ppi
|
|
interface provides a means of communication with
|
|
.Tn HP-IB
|
|
printers and plotters.
|
|
.Pp
|
|
Special files
|
|
.Pa ppi0
|
|
through
|
|
.Pa ppi7
|
|
are used to access the devices, with the digit at the end
|
|
of the filename referring to the bus address of the device.
|
|
Current versions of the autoconf code can not probe for these
|
|
devices, so the device entry in the configuration file must be
|
|
fully qualified.
|
|
.Pp
|
|
The device files appear as follows:
|
|
.Bd -literal -offset indent
|
|
"crw-rw-rw- 1 root 11, 0 Dec 21 11:22 /dev/ppi"
|
|
.Ed
|
|
.Sh DIAGNOSTICS
|
|
None.
|
|
.Sh SEE ALSO
|
|
.Xr hpib 4 .
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
interface
|
|
.Ud
|
|
.Sh BUGS
|
|
This driver is very primitive, it handshakes data out byte by byte.
|
|
It should use
|
|
.Tn DMA
|
|
if possible.
|