NetBSD/share/man/man4/man4.hp300/ppi.4

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1997-10-19 16:55:52 +04:00
.\" $NetBSD: ppi.4,v 1.4 1997/10/19 12:57:25 mrg Exp $
.\"
.\" Copyright (c) 1990, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
1993-03-21 12:45:37 +03:00
.\"
.\" 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
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" 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.
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" from: @(#)ppi.4 8.1 (Berkeley) 6/9/93
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.\"
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.Dd June 9, 1993
1993-03-21 12:45:37 +03:00
.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 BUGS
This driver is very primitive, it handshakes data out byte by byte.
It should use
.Tn DMA
if possible.