1.\" $NetBSD: acc.4,v 1.10 2001/08/18 12:05:25 wiz Exp $ 2.\" 3.\" Copyright (c) 1983, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" from: @(#)acc.4 8.1 (Berkeley) 6/5/93 35.\" 36.Dd June 5, 1993 37.Dt ACC 4 vax 38.Os 39.Sh NAME 40.Nm acc 41.Nd 42.Tn ACC LH/DH IMP 43network interface 44.Sh SYNOPSIS 45.Cd pseudo-device imp "acc0 at uba0 csr 167600 vector accrint accxint" 46.Sh DESCRIPTION 47NOTE: 48At the moment 49.Nx 50does not support 51.Tn IMP , 52so this manual page is not relevant. 53.Pp 54The 55.Nm acc 56device provides a Local Host/Distant Host 57interface to an 58.Tn IMP . 59It is normally used when participating 60in the 61.Tn DARPA 62Internet. The controller itself is not accessible 63to users, but instead provides the hardware support to the 64.Tn IMP 65interface described in 66.Xr imp 4 . 67The configuration entry for the 68.Xr imp 4 69must also include the 70.Em pseudo-device 71as shown above. 72.Sh DIAGNOSTICS 73.Bl -diag 74.It acc%d: not alive. 75The initialization routine was entered even though the device 76did not autoconfigure. This indicates a system problem. 77.Pp 78.It acc%d: can't initialize. 79Insufficient UNIBUS resources existed to initialize the device. 80This is likely to occur when the device is run on a buffered 81data path on an 11/750 and other network interfaces are also 82configured to use buffered data paths, or when it is configured 83to use buffered data paths on an 11/730 (which has none). 84.Pp 85.It acc%d: imp doesn't respond, icsr=%b. 86The driver attempted to initialize the device, but the 87.Tn IMP 88failed to respond after 500 tries. Check the cabling. 89.Pp 90.It acc%d: stray xmit interrupt, csr=%b. 91An interrupt occurred when no output had previously been started. 92.Pp 93.It acc%d: output error, ocsr=%b, icsr=%b. 94The device indicated a problem sending data on output. 95.Pp 96.It acc%d: input error, csr=%b. 97The device indicated a problem receiving data on input. 98.Pp 99.It acc%d: bad length=%d. 100An input operation resulted in a data transfer of less than 1010 or more than 1008 bytes of 102data into memory (according to the word count register). 103This should never happen as the maximum size of a 104.Pf host- Tn IMP 105message is 1008 bytes. 106.El 107.Sh SEE ALSO 108.Xr netintro 4 109.Sh HISTORY 110The 111.Nm 112interface appeared in 113.Bx 4.2 . 114