1.\" $OpenBSD: pcons.4,v 1.7 2015/11/01 21:26:48 jmc Exp $ 2.\" 3.\" Copyright (c) 2001 Miodrag Vallat. 4.\" 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. Redistribution 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.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" 26.\" 27.Dd $Mdocdate: November 1 2015 $ 28.Dt PCONS 4 sparc64 29.Os 30.Sh NAME 31.Nm pcons 32.Nd SPARC64 PROM console interface 33.Sh SYNOPSIS 34.Cd "pcons0 at mainbus0" 35.Cd "wsdisplay* at pcons?" 36.Sh DESCRIPTION 37The 38.Nm 39device provides a simple text console, using the PROM services for 40input and/or output if no other driver handles this task. 41It will use the PROM console devices set via the 42.Dq input-device 43and 44.Dq output-device 45variables. 46.Pp 47This driver is provided as a fallback console mechanism 48if the real console hardware cannot be driven in 49.Ox . 50.Sh FILES 51.Bl -tag -width /dev/console 52.It Pa /dev/console 53.El 54.Sh SEE ALSO 55.Xr intro 4 , 56.Xr tty 4 57.Sh HISTORY 58.Ox 59support for the PROM console 60first appeared in 61.Ox 3.0 . 62.Sh CAVEATS 63If 64.Nm 65handles console input, the PROM will handle break (or Stop-A) sequences before 66.Nm pcons . 67The preferred way to enter 68.Xr ddb 4 69on a ddb-enabled pcons console is then to enter the following sequence : 70.Sq +++++ 71