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1.1 ! root 1: .\" Copyright (c) 1990 The Regents of the University of California. ! 2: .\" 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: .\" Redistribution and use in source and binary forms are permitted provided ! 9: .\" that: (1) source distributions retain this entire copyright notice and ! 10: .\" comment, and (2) distributions including binaries display the following ! 11: .\" acknowledgement: ``This product includes software developed by the ! 12: .\" University of California, Berkeley and its contributors'' in the ! 13: .\" documentation or other materials provided with the distribution and in ! 14: .\" all advertising materials mentioning features or use of this software. ! 15: .\" Neither the name of the University nor the names of its contributors may ! 16: .\" be used to endorse or promote products derived from this software without ! 17: .\" specific prior written permission. ! 18: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED ! 19: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF ! 20: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 21: .\" ! 22: .\" @(#)ppi.4 5.1 (Berkeley) 6/29/90 ! 23: .\" ! 24: .TH PPI 4 "June 29, 1990" ! 25: .UC 7 ! 26: .SH NAME ! 27: ppi \- HPIB printer/plotter interface ! 28: .SH SYNOPSIS ! 29: .B "device ppi0 at hpib0 slave 5" ! 30: .PP ! 31: .B "crw-rw-rw- 1 root 11, 0 Dec 21 11:22 /dev/ppi" ! 32: .SH DESCRIPTION ! 33: The ppi interface provides a means of communication with HP-IB ! 34: printers and plotters. ! 35: .PP ! 36: Special files ! 37: .I ppi0 ! 38: through ! 39: .I ppi7 ! 40: are used to access the devices, with the digit at the end ! 41: of the filename referring to the bus address of the device. ! 42: Current versions of the autoconf code can not probe for these ! 43: devices, so the device entry in the configuration file must be ! 44: fully qualified. ! 45: .SH DIAGNOSTICS ! 46: None. ! 47: .SH BUGS ! 48: This driver is very primitive, it handshakes data out byte by byte. ! 49: It should use DMA if possible. ! 50: .SH "SEE ALSO" ! 51: hpib(4).
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