PIC to PIC, How Many IO Connections Required?

[CocaColaKid]

I was actually thinking 3 lines. One transmission, one to tell the other to get ready to receive and one for replying to the request to start sending.

[Dwayne]

Hello CocaCola,

Yes, 3 wires will work too...

So will 4... It is really all up to you, and how you want to handle it.

with the "Wait" command, you can signify the "Wait" characters to be specific to each chip.

SERIN 1,N2400,[“A”],B0

Instead of using "A", you can use a non-printable value like $FA or whatever you want..

$FA = chip1
$FB = chip2
$FC = chip3

Assign them letters that are not used ...zza zzb zzc.

Thus, only THAT chip that is looking for zza will recognize the transmitting data.

Or, like you say... 3 wires will work just fine...One per chip...

Dwayne