126 lines
3.6 KiB
Groff
126 lines
3.6 KiB
Groff
.\" Copyright (c) 1983, 1991 The Regents of the University of California.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" from: @(#)hdh.4 6.4 (Berkeley) 3/27/91
|
|
.\" $Id: hdh.4,v 1.2 1993/08/01 07:36:20 mycroft Exp $
|
|
.\"
|
|
.Dd March 27, 1991
|
|
.Dt HDH 4 vax
|
|
.Os BSD 4.3
|
|
.Sh NAME
|
|
.Nm hdh
|
|
.Nd
|
|
.Tn ACC
|
|
.Tn IF-11/HDH
|
|
.Tn IMP
|
|
interface
|
|
.Sh SYNOPSIS
|
|
.Cd "pseudo-device imp"
|
|
.Cd "device hdh0 at uba0 csr 166740 vector hdhintr"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm hdh
|
|
device provides an
|
|
.Tn HDLC
|
|
Host
|
|
.Pq Tn HDH
|
|
interface to an
|
|
.Tn IMP .
|
|
It is normally used when participating
|
|
in the
|
|
.Tn DARPA
|
|
Internet. The controller itself is not accessible
|
|
to users, but instead provides the hardware support to the
|
|
.Tn IMP
|
|
interface described in
|
|
.Xr imp 4 .
|
|
The configuration entry for the
|
|
.Tn IMP
|
|
must also include the
|
|
.Em pseudo-device
|
|
as shown above in the
|
|
.Sx SYNOPSIS .
|
|
.Sh DIAGNOSTICS
|
|
.Bl -diag
|
|
.It hdh%d: not alive.
|
|
The initialization routine was entered even though the device
|
|
did not autoconfigure. This indicates a system problem.
|
|
.Pp
|
|
.It hdh%d: cannot get chan %d uba resources.
|
|
Insufficient
|
|
.Tn UNIBUS
|
|
resources existed to initialize the device.
|
|
This is likely to be a shortage of
|
|
.Tn UNIBUS
|
|
mapping registers.
|
|
.Pp
|
|
.It hdh%d: LINE UP.
|
|
This indicates that both the
|
|
.Tn HDLC
|
|
and
|
|
.Tn HDH
|
|
protocols have declared the
|
|
link to the
|
|
.Tn IMP
|
|
alive.
|
|
.Pp
|
|
.It hdh%d: LINE DOWN.
|
|
This indicates that the link to the
|
|
.Tn IMP
|
|
has died.
|
|
.Pp
|
|
.It hdh%d: TIMEOUT.
|
|
.It hdh%d: HOST DATA ERROR.
|
|
.It hdh%d: IMP SEQUENCE ERROR.
|
|
.It hdh%d: HOST SEQUENCE ERROR.
|
|
These errors indicate that an
|
|
.Tn HDH
|
|
protocol error has been detected.
|
|
.Pp
|
|
.It hdh%d: cannot get supervisor cmnd buffer.
|
|
This error indicates that an
|
|
.Em mbuf
|
|
could not be allocated to send a command to the
|
|
.Tn IF-11/HDH .
|
|
.El
|
|
.Pp
|
|
Any other error message from hdh%d: indicates a serious error
|
|
detected by either the driver or the
|
|
.Tn IF-11/HDH
|
|
firmware.
|
|
.Sh SEE ALSO
|
|
.Xr netintro 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver appeared in
|
|
.Bx 4.3 .
|