2.11BSD/src/man/man4/cons.4

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.\" Copyright (c) 1980 Regents of the University of California.
.\" All rights reserved.  The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\"
.\"	@(#)cons.4	6.2 (Berkeley) 7/27/87
.\"
.TH CONS 4 "July 27, 1987"
.UC 4
.SH NAME
cons \- PDP-11 console interface
.SH DESCRIPTION
The console is available to the processor through the console registers.
It acts like a normal terminal, except that typing control-P on the
consoles of some PDP-11's puts the console in local console mode with an
ODT (console debugger mode) prompt.  The operation of the console in this
mode varies per-processor.  See the PDP-11 Processor Handbook for your
particular processor.
.PP
On an 11/44 the console can be put into local mode by typing a control-P.
The ODT prompt is ``>>>''.  The processor is not stopped by entering
local console mode.  The CPU may be halted with the ``halt'' command,
which may be abbreviated to ``h.'' Conversational mode is re-entered by
using the command ``c'' (continue).
.PP
On 11/73 the processor's front panel halt switch must be pressed to put
the console into ODT mode.  The ODT prompt is an ``@''.  No characters
typed on the console are special while UNIX is in control of the console.
.SH FILES
/dev/console
.SH "SEE ALSO"
tty(4), reboot(8)
.br
PDP-11 Hardware Handbook specific to hardware