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+.\" $NetBSD: cons.4,v 1.12 2017/07/03 21:30:59 wiz Exp $
+.\"
+.\" Copyright (c) 1980, 1991, 1993
+.\" 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. 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: @(#)cons.4 8.1 (Berkeley) 6/5/93
+.\"
+.Dd June 5, 1993
+.Dt CONS 4 vax
+.Os
+.Sh NAME
+.Nm cons
+.Nd VAX-11 console interface
+.Sh DESCRIPTION
+The console is available to the processor through the console registers.
+It acts like a normal terminal, except that when the local functions are
+not disabled,
+.Ic \&^P
+(control-P) puts the console in local console mode (where
+the prompt is
+.Sq Li >>> ) .
+The operation of the console in this mode varies
+slightly per-processor.
+.Ss VAX-11/780 or 785
+On either the
+.Tn VAX-11/780
+or 785 the following commands may be used
+after placing the console in local mode with
+.Ic ^P .
+.Pp
+.Bl -tag -width continue -compact -offset 4n
+.It Ic c
+.It Ic continue
+Re-enter conversational mode
+if the processor was halted.
+.Pp
+.It Ic h
+.It Ic halt
+Halt the CPU.
+On an 11/780 or 785
+the processor is not stopped by entering local console mode.
+.Pp
+.It Ic set t p
+(set terminal program)
+Re-enter conversational mode
+if the processor is still
+running.
+.Pp
+.It Ic P
+(proceed)
+Get out of
+.Tn ODT
+mode.
+.Pp
+.It Ic <break>
+If you hit the break key on the console, then the console
+.Tn LSI Ns -11
+will go into
+.Tn ODT
+(console debugger mode).
+.El
+.Ss VAX-11/750 or 11/730
+On an 11/750
+or an 11/730
+the processor is halted whenever the console is not in conversational mode.
+.Pp
+.Bl -tag -width continue -compact -offset 4n
+.It Ic C
+Return to conversational mode.
+.Pp
+.It Ic ret
+Return from remote diagnosis mode to local console
+mode.
+.Pp
+.It Ic \&^D
+(11/750 only)
+When in console mode on an 11/750 which has a remote diagnosis module,
+a
+.Ic \&^D
+will put you in remote diagnosis mode, where the prompt will be
+.Ql RDM> .
+.El
+.Ss VAX-8600 or 8650
+The
+.Tn VAX-8600
+(8650) console normally works in the same way as the 11/750,
+except that there are many additional modes and commands.
+.Pp
+.Bl -tag -width continue -compact -offset 4n
+.It Ic c
+.It Ic continue
+Return to
+conversational mode.
+.Pp
+.It Ic halt
+Halt the processor if
+.Tn HEX
+debug enabled.
+.Pp
+.It Ic p
+Halt the processor if in normal mode.
+.El
+.Pp
+With the above proviso's the console works like any other
+.Ux
+terminal.
+.Sh FILES
+.Bl -tag -width /dev/console -compact
+.It Pa /dev/console
+.El
+.Sh SEE ALSO
+.Xr tty 4 ,
+.Xr reboot 8
+.Rs
+.%T "VAX Hardware Handbook"
+.Re
+.Sh HISTORY
+The
+.Nm cons
+interface
+appeared in
+.Bx 4.0 .