Included in the .zip attachment is a really handy program for evaluating exactly what is being presented to the serial port of a C-Touch or PAC. (serial in test.ctd) Thanks Darren ! ;) Examples for outgoing and incoming ascii packets for the Onkyo/Integra AV amp. Would have worked out the incoming from the amp much quicker if I had Darren's "serial in test" code.... Anyway did it the long way after digging up old serial data comms reference so the satisfaction is still there. (pacintegra.cta - archive file) RS232 protocol reference for the Integra Amp (what ever the .xls file is called :p ) Hope this helps... :)