Hi,
I am assembling this circuit. 1 Week ago i am suffering of the same situation that you have.
I am conecting 5 PIC 16F690, 1 as master (Tx conected to 4 Rx) and 4 slaves (all tx in parallel with other slaves...)

If I only conected 2 pics (P2P) all works fine, but adding 1 more, the Tx from 1 slave to master is corrupted.

I have the solution, can you reply what did you do to solve?


/jose p