It looks like that you have already tried all what was possible.
So there must be something wrong with your IC2 or with the resistors. Maybe the RS232 IC is broken or not correct soldered, or one of the resistors are physicaly broken ore not correct soldered.
What happens, if you are using the Hyperterminal. Can you see the sytemmessage from Dennis firmwaredownload to the xilinx with the original PIC?
MfG
Jens
Where are you located ?
