bind -a #t /dev /dev/eia0/dev/eia0ctl/dev/eia1/dev/eia1ctl
DESCRIPTION
The serial line devices serve a one-level directory,
giving access to the serial ports.
There are several devices serving the same files;
the particular one used depends on the machine involved.
Eia0
is a stream data file.
It can be read and written to use that port.
Reads will block until at least one character is available.
Eia0ctl
is a stream control file associated with the port.
Eia1
and
eia1ctl
are similar, but for a second serial line.
The
ctl
file can be used to push stream modules onto the port.
One can also write one of the following textual commands to a
ctl
file:
bn
Set the baud rate to
n.
dn
Set DTR if
n
is non-zero;
else clear it.
kn
Send a break lasting
n
milliseconds.
rn
Set RTS if
n
is non-zero;
else clear it.
mn
Obey modem CTS signal if
n
is non-zero;
else clear it.
pc
Set parity to odd if
c
is
o,
to even if
c
is
e;
else set no parity.
sn
Set number of stop bits to
n.
Legal values are 1 or 2.
ln
Set number of bits per byte to
n.
Legal values are 5, 6, 7, or 8.