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-.\" $OpenBSD: nmeaattach.8,v 1.7 2008/06/09 22:07:29 mbalmer Exp $
-.\"
-.\" Copyright (c) 2006 - 2008 Marc Balmer <mbalmer@openbsd.org>
-.\"
-.\" Permission to use, copy, modify, and distribute this software for any
-.\" purpose with or without fee is hereby granted, provided that the above
-.\" copyright notice and this permission notice appear in all copies.
-.\"
-.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-.\"
-.Dd $Mdocdate: June 9 2008 $
-.Dt NMEAATTACH 8
-.Os
-.Sh NAME
-.Nm nmeaattach
-.Nd attach serial lines as timedelta sensors
-.Sh SYNOPSIS
-.Nm nmeaattach
-.Op Fl dhm
-.Op Fl s Ar baudrate
-.Op Fl t Ar cond
-.Ar device
-.Sh DESCRIPTION
-.Nm
-is used to designate a serial line with a device that outputs NMEA 0183 data as
-a source of timedelta sensors.
-.Pp
-The
-.Nm
-command is deprecated and might be removed from a later version of
-.Ox .
-Please use the
-.Xr ldattach 8
-command instead.
-.Pp
-The following operands are supported by
-.Nm nmeaattach :
-.Bl -tag -width Ar
-.It Fl d
-Do not daemonize.
-.It Fl h
-Turn on RTS/CTS flow control.
-By default, no flow control is done.
-.It Fl m
-Maintain modem control signals after closing the line.
-Specifically, this disables HUPCL.
-.It Fl s Ar baudrate
-Specifies the speed of the connection.
-If not specified, the default of 4800 baud is used.
-.It Fl t Ar cond
-Chooses the condition which will cause the current system time to be
-immediately copied to the terminal timestamp storage for subsequent use by
-.Xr nmea 4 .
-Only one can be used.
-.Pp
-.Bl -tag -width DCDXX -offset indent -compact
-.It dcd
-Copy the timestamp when DCD is asserted.
-.It !dcd
-Copy the timestamp when DCD is deasserted.
-.It cts
-Copy the timestamp when CTS is asserted.
-.It !cts
-Copy the timestamp when CTS is deasserted.
-.El
-.Pp
-If no condition is specified, the
-.Xr nmea 4
-line discipline will timestamp on receiving the leading
-.Sq $
-character of each GPRMC sentence.
-.Pp
-Configuring the NMEA device to issue a PPS signal is device specific and
-should be done by device specific applications.
-.It Ar device
-Specifies the name of the serial line.
-.Ar device
-should be a string of the form
-.Dq cuaXX ,
-or
-.Dq /dev/cuaXX .
-.El
-.Pp
-Only the superuser may designate NMEA devices.
-.Pp
-To detach the interface, kill off the
-.Nm
-process.
-.Sh SEE ALSO
-.Xr ldattach 8,
-.Xr nmea 4 ,
-.Xr tty 4
-.Sh HISTORY
-The
-.Nm
-command first appeared in
-.Ox 4.0 .