Richard Pennington writes:
> Call me stupid.
> 
> I'm trying to use /dev/dty00. I can read characters from a remote
> device, but every time I try to write characters, I get:
> 
> cat tree.tcl > /dev/dty00
> cat: stdout: Input/output error
> 
> whether or not I have somthing connected to dty00.
> 
> What am I missing? I though the dty* devices were supposed to act
> like a local connection? Is it documented any where?

You probably should check the 'ttys' manpage and see if the options 'local'
or 'softcar' are applicable.  If this device is not a normal modem with the
typical control lines, then you will probably need one or both of them.

-Andrew