How, or can I, split an RS-232 serial line?
For example I want to connect the AVR to a PC port, and also send the TX line to the RX of another AVR.
Found the answer else ware, but if anyone is curious,
Multiple TX to single RX = Bad
Single TX to Multiple RX = OK
So it should be no issue to split the TX out of the first AVR, sending one to the RX of the PC and one to the RX of the other AVR.
and btw, an Arduino is an AVR in case anyone was wondering.