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@@ -264,33 +264,40 @@ When started manually, the file interface is mounted at
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.B /net
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as is customary.
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.
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-.SS Serial ports
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+.SS Serial and JTAG ports
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.I Serial
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provides a file system (usually mounted at
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.BR /dev )
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that includes one directory per USB serial port, named
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-.BI eiaU N.
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+.BI eiaU N
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+or
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+.BI eiaU N . M.
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In this directory there are two files,
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-.BI eiau N,
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+.BR eiaU ,
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similar to
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.BI eia N
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in
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.IR uart (3),
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and
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-.BI eiau N /ctl .
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-.I Ctl
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-admits writes in the same format as
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+.BR eiaUctl ,
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+which admits writes in the same format as
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.BI eia N ctl
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in
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.IR uart (3).
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Reading from
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-.I ctl
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+.B eiaUctl
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gives the serial port's settings in the same format as
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.BI eia N status
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in
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.IR uart (3).
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Options are similar to those of
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.IR disk .
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+.PP
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+JTAG ports are similar
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+but the files are named
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+.B jtag
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+and
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+.BR jtagctl .
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.
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.SS Audio devices
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.I Usbaudio
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