1.\" $NetBSD: css.4,v 1.10 2003/08/07 10:31:10 agc 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. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" from: @(#)css.4 8.1 (Berkeley) 6/5/93 31.\" 32.Dd June 5, 1993 33.Dt CSS 4 vax 34.Os 35.Sh NAME 36.Nm css 37.Nd 38.Tn DEC IMP-11A LH/DH IMP 39network interface 40.Sh SYNOPSIS 41.Cd "pseudo-device imp device css0 \&at uba0 csr 167600 flags 10 vector cssrint cssxint" 42.Sh DESCRIPTION 43NOTE: At the moment, 44.Nx 45does not support 46.Tn IMP , 47so this manual page is not relevant. 48.Pp 49The 50.Nm css 51device provides a Local Host/Distant Host 52interface to an 53.Tn IMP . 54It is normally used when participating 55in the 56.Tn DARPA 57Internet. The controller itself is not accessible 58to users, but instead provides the hardware support to the 59.Tn IMP 60interface described in 61.Xr imp 4 . 62The configuration entry for the 63.Xr imp 4 64must also include the 65.Em pseudo-device 66as shown above. 67.Sh DIAGNOSTICS 68.Bl -diag 69.It css%d: not alive. 70The initialization routine was entered even though the device 71did not autoconfigure. This is indicates a system problem. 72.Pp 73.It css%d: can't initialize. 74Insufficient 75.Tn UNIBUS 76resources existed to initialize the device. 77This is likely to occur when the device is run on a buffered 78data path on an 11/750 and other network interfaces are also 79configured to use buffered data paths, or when it is configured 80to use buffered data paths on an 11/730 (which has none). 81.Pp 82.It css%d: imp doesn't respond, icsr=%b. 83The driver attempted to initialize the device, but the 84.Tn IMP 85failed to respond after 500 tries. Check the cabling. 86.Pp 87.It css%d: stray output interrupt csr=%b. 88An interrupt occurred when no output had previously been started. 89.Pp 90.It css%d: output error, ocsr=%b icsr=%b. 91The device indicated a problem sending data on output. 92.Pp 93.It css%d: recv error, csr=%b. 94The device indicated a problem receiving data on input. 95.Pp 96.It css%d: bad length=%d. 97An input operation resulted in a data transfer of less than 980 or more than 1008 bytes of 99data into memory (according to the word count register). 100This should never happen as the maximum size of a 101.Pf host- Tn IMP 102message is 1008 bytes. 103.El 104.Sh HISTORY 105The 106.Nm 107interface appeared in 108.Bx 4.2 . 109