Open driver?

[Sarah]

> I have fiddled a bit with OS X because the docs say that "On OS X and 
> Unix systems, you can obtain a list of available devices by reading the 
> file "/dev/tty"." but I can't find such a file, or even a "dev/" 
> directory. Any additional info would be helpful because I feel a bit 
> lost.
>
This I can help with: you're going to have to use Terminal as dev is one 
of those hidden directories where Unix keeps it's secret system stuff.

Open Terminal and type "cd /dev", press Return or Enter.
Now type "tty" & press return/Enter.
In my case, I only have one entry which is "/dev/ttyp1" - I presume this 
is the internal modem.

However, this information doesn't help much as there seems to be no 
valid way to open this port. Every attempt returns "Can't open that 
file." which is supposed to be the error message if the driver doesn't 
exist. I have tried "open driver" & "open file".

My interest is in serial communications to various scientific 
instruments. I have done this on Mac OS 9.x with the commands for the 
"modem:" & "printer:" keywords, but not on OS X. If anyone has managed 
to open any port using OS X, I'd really like to hear about it.

Sarah