Hi all, I am using a 18 f47K40 for a project that uses the serial port on RC6(Rx) and RC7(Rx) but cannot get the port to work. I have many projects like this using 16F devices but I can't get this one working. I know the chip is functioning because of a led display working and as far as I can tell the basic EUSART setup is the same as other chips I have used. I have not used the peripheral pin select before and may be that is the pro= blem. I am programming in assembler and all web examples are in C with function calls that do not explain the pin setup process. This is a snippet of the PPS code BANKSEL RX1PPS movlw b'00010111' movwf RX1PPS,BANKED ; PORTC<7> as the EUSART1 RX input, movlw b'00001001' ; PORTC<6> as the EUSART1 TX output movwf RC6PPS,BANKED Any help appreciated. cheers Tony --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .