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Markup fixes.

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This commit is contained in:
Ruslan Ermilov 2004-05-16 21:52:48 +00:00
parent 6c1a40fc90
commit fc583d20af
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=129300
1 changed files with 28 additions and 20 deletions
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games/morse/morse.6
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@ -41,36 +41,37 @@
.Nd reformat input as morse code
.Sh SYNOPSIS
.Nm
.Op Fl p
.Op Fl elps
.Op Fl d Ar device
.Op Fl e
.Op Fl w Ar speed
.Op Fl f Ar frequency
.Op Fl l
.Op Fl s
.Op Ar string ...
.Sh DESCRIPTION
The command
The
.Nm
read the given input and reformat it in the form of morse code.
command reads the given input and reformats it in the form of morse code.
Acceptable input are command line arguments or the standard input.
.Pp
Available options:
.Bl -tag -width flag
.Bl -tag -width indent
.It Fl l
The
.Fl l
option produces output suitable for led(4) devices.
option produces output suitable for
.Xr led 4
devices.
.It Fl s
The
.Fl s
option produces dots and dashes rather than words.
.It Fl p
Send morse the real way. This only works if your system has
Send morse the real way.
This only works if your system has
.Xr speaker 4
support.
.It Fl w Ar speed
Set the sending speed in words per minute. If not specified the default
Set the sending speed in words per minute.
If not specified, the default
speed of 20 WPM is used.
.It Fl f Ar frequency
Set the sidetone frequency to something other than the default 600 Hz.
@ -79,10 +80,10 @@ Similar to
.Fl p ,
but use the RTS line of
.Ar device
(which must by a tty device)
(which must by a TTY device)
in order to emit the morse code.
.It Fl e
echo each character before it is sent, used together with either
Echo each character before it is sent, used together with either
.Fl p
or
.Fl d .
@ -98,7 +99,8 @@ or the
.Fl d
flag.
.Pp
Not all prosigns have corresponding characters. Use
Not all prosigns have corresponding characters.
Use
.Ql #
for
.Em AS ,
@ -124,21 +126,24 @@ and
for
.Em AR .
.Pp
Using flag
.Fl d Ar device
Using the
.Fl d
flag,
it is possible to key an external device, like a sidetone generator with
a headset for training purposes, or even your ham radio transceiver. For
a headset for training purposes, or even your ham radio transceiver.
For
the latter, simply connect an NPN transistor to the serial port
.Ar device ,
emitter connected to ground, base connected through a resistor
(few kiloohms) to RTS, collector to the key line of your transceiver
(assuming the transceiver has a positive key supply voltage and is keyed
by grounding the key input line). A capacitor (some nanofarads) between
by grounding the key input line).
A capacitor (some nanofarads) between
base and ground is advisable to keep stray RF away,
and to suppress the
minor glitch that is generated during program startup.
.Sh FILES
.Bl -tag -width /dev/speaker -compact
.Bl -tag -width ".Pa /dev/speaker" -compact
.It Pa /dev/speaker
speaker device file
.El
@ -148,12 +153,15 @@ Your
locale codeset determines how
characters with the high-order bit set
are interpreted.
.Pp
.Bl -tag -width ".Li ISO8859-15" -compact
.It Li ISO8859-1
.It Li ISO8859-15
Interpret characters with the high-order bit set as Western European characters.
.Pp
.It Li KOI8-R
Interpret characters with the high-order bit set as Cyrillic characters.
.Pp
.It Li ISO8859-7
Interpret characters with the high-order bit set as Greek characters.
.El
@ -174,5 +182,5 @@ Only understands a few European characters
no Asian characters,
and no continental landline code.
.Pp
Sends a bit slower than it should due to system overhead. Some people
would call this a feature.
Sends a bit slower than it should due to system overhead.
Some people would call this a feature.