1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Systems Programming Group of the University of Utah Computer 6.\" Science Department. 7.\" 8.\" %sccs.include.redist.man% 9.\" 10.\" @(#)ppi.4 8.1 (Berkeley) 06/09/93 11.\" 12.Dd 13.Dt PPI 4 hp300 14.Os 15.Sh NAME 16.Nm ppi 17.Nd 18.Tn HP-IB 19printer/plotter interface 20.Sh SYNOPSIS 21.Cd "device ppi0 at hpib0 slave 5" 22.Sh DESCRIPTION 23The 24.Nm ppi 25interface provides a means of communication with 26.Tn HP-IB 27printers and plotters. 28.Pp 29Special files 30.Pa ppi0 31through 32.Pa ppi7 33are used to access the devices, with the digit at the end 34of the filename referring to the bus address of the device. 35Current versions of the autoconf code can not probe for these 36devices, so the device entry in the configuration file must be 37fully qualified. 38.Pp 39The device files appear as follows: 40.Bd -literal -offset indent 41"crw-rw-rw- 1 root 11, 0 Dec 21 11:22 /dev/ppi" 42.Ed 43.Sh DIAGNOSTICS 44None. 45.Sh SEE ALSO 46.Xr hpib 4 . 47.Sh BUGS 48This driver is very primitive, it handshakes data out byte by byte. 49It should use 50.Tn DMA 51if possible. 52