Hi, I'm very new to the PICnic and have a question that may be a bit simple for the group. However I can't find anything in the FAQ's. The problem is that the transmitter seems to be inverting all the signals. It seems to idle high, but the start bit, data and stop bits are all in the wrong polarity (start bit is high and stop bit is low). The receiver also seems to be working incorrectly as it doesn't correctly receive data being sent. I can't find anything in the documentation about polarity inversion or anything. Am I just missing something really obvious? This application is just for inter-processor comms between a 3v DSP and a 16C63 pic. I'm running it at 312.5 kiloBaud, 1 start, 8 data, no parity, 1 stop. Thanks for any suggestions, Felix