Neil Baylis wrote:

> I Now want to make a different version that operates as a party line,
> with all transmitters and receivers connected together. To do so, each
> node has to know how to turn off its transmitter as soon as it has
> finished a transmission.

There's a flag which tells you when TXREG is ready to accept more data, 
and another flag which tells you when Stop bit has been transmitted.
You could use this latter one.

I also add some little delay past it (say 2 bit time) to be safe.

-- 
Ciao, Dario
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist