808a36ef65
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
65 lines
1.6 KiB
Groff
65 lines
1.6 KiB
Groff
.\" $FreeBSD$
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.Dd May 15, 1994
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.Dt COMCONTROL 8
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.Os FreeBSD
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.Sh NAME
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.Nm comcontrol
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.Nd control an sio device.
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.Sh SYNOPSIS
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.Nm comcontrol
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.Ar sio_special_device
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.Op options
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.Sh DESCRIPTION
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.Nm Comcontrol
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is used to examine and modify some of the special characteristics
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of the specified sio device.
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If no arguments other than the device are specified,
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it prints the settings of all controllable characteristics.
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This usage requires only read access on the device.
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Only the superuser can change the settings.
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.Pp
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The following options are available:
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.Bl -tag -width Fl
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.It Cm dtrwait Ar number
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Set the time to wait after dropping DTR
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to the given number.
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The units are hundredths of a second.
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The default is 300 hundredths, i.e., 3 seconds.
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This option needed mainly to set proper recover time after
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modem reset.
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.El
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.Bl -tag -width Fl
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.It Cm drainwait Ar number
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Set the time to wait for output drain
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to the given number.
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The units are seconds.
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The default is 0, i.e. wait forever.
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This option needed mainly to specify upper limit of minutes
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to prevent modem hanging.
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.El
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.Pp
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The standard way to use
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.Nm comcontrol
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is to put invocations of it in the
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.Ar /etc/rc.serial
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startup script.
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.Sh SEE ALSO
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.Xr stty 1 ,
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.Xr sio 4
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.Sh FILES
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.Bl -tag -width Pa
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.It Pa /dev/ttyd?
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dialin devices, hardwired terminals
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.It Pa /dev/cuaa?
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dialout devices.
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.Sh AUTHOR
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Christopher G. Demetriou
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.Sh BUGS
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.Nm comcontrol
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should be named
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.Nm siocontrol .
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.Sh HISTORY
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Originally part of cgd's com package patches, version 0.2.1, to 386BSD 0.1.
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Once controlled bidirectional capabilities. Little is left to control now
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that these capabilities are standard.
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