News from Mac OSX - Mysterious Serial Port

[Sarah]

Hi Dar,

I'd like to try making one of these loop-back circuits. I'm pretty neat 
with a soldering iron, but I'm not sure how to proceed. I guess I just 
need the join the Tx pins to the Rx pins but which pins are they? How 
did you do it?

Cheers,
Sarah

On Friday, August 22, 2003, at 12:29  pm, Dar Scott wrote:
>
> It is also possible to make a loop-back circuit so that you can read 
> what you write.  You might even still be able to buy one.  If you have 
> any old Mac serial cables, you can make one from that.