I haven't seen any PBP code but there is some BASCOM-AVR code for EDTP's Packet Whacker (RTL8019AS based) at http://members.home.nl/bzijlstra/sof...ples/basex.htm which you might be able to port to PBP.

If you are not locked in to the RTL8019AS you might want to follow the PIC18F67J60 thread in this forum. I think it will prove more fruitful for PBP users.