1*62988Sbostic.\" Copyright (c) 1990, 1991, 1993 2*62988Sbostic.\" The Regents of the University of California. All rights reserved. 344680Sbostic.\" 444680Sbostic.\" This code is derived from software contributed to Berkeley by 544680Sbostic.\" the Systems Programming Group of the University of Utah Computer 644680Sbostic.\" Science Department. 744680Sbostic.\" 844680Sbostic.\" %sccs.include.redist.man% 944680Sbostic.\" 10*62988Sbostic.\" @(#)ppi.4 8.1 (Berkeley) 06/09/93 1144680Sbostic.\" 1247672Scael.Dd 1347672Scael.Dt PPI 4 hp300 1447672Scael.Os 1547672Scael.Sh NAME 1647672Scael.Nm ppi 1747672Scael.Nd 1847672Scael.Tn HP-IB 1947672Scaelprinter/plotter interface 2047672Scael.Sh SYNOPSIS 2147672Scael.Cd "device ppi0 at hpib0 slave 5" 2247672Scael.Sh DESCRIPTION 2347672ScaelThe 2447672Scael.Nm ppi 2547672Scaelinterface provides a means of communication with 2647672Scael.Tn HP-IB 2744680Sbosticprinters and plotters. 2847672Scael.Pp 2944680SbosticSpecial files 3047672Scael.Pa ppi0 3144680Sbosticthrough 3247672Scael.Pa ppi7 3344680Sbosticare used to access the devices, with the digit at the end 3444680Sbosticof the filename referring to the bus address of the device. 3544680SbosticCurrent versions of the autoconf code can not probe for these 3644680Sbosticdevices, so the device entry in the configuration file must be 3744680Sbosticfully qualified. 3847672Scael.Pp 3947672ScaelThe device files appear as follows: 4047672Scael.Bd -literal -offset indent 4147672Scael"crw-rw-rw- 1 root 11, 0 Dec 21 11:22 /dev/ppi" 4247672Scael.Ed 4347672Scael.Sh DIAGNOSTICS 4444680SbosticNone. 4547672Scael.Sh SEE ALSO 4647672Scael.Xr hpib 4 . 4747672Scael.Sh BUGS 4844680SbosticThis driver is very primitive, it handshakes data out byte by byte. 4947672ScaelIt should use 5047672Scael.Tn DMA 5147672Scaelif possible. 52