Problem with Devkit8000

Hi,
Please I have a big problem, I can't communicate with the card
devkit8000 via rs232, when I connect it to my PC (according to the
steps in part linux quick start in the documment of devkit8000) I see
the character in the screen
like :ÿÿÿÿÿÿÿÿÿÿûÿÿÿÿÿÿÿÿûÿÿÿÿûÿÿÿÿÿûÿÿÿûûßÿûûÿÿÿûûÿÿûûßÿÿÿÛÿÿÿÿÿÿÿÿûûÿÿÿÿÿÿûÿûÿßÿÿÿßÿûÿÿÿÿÿÿÿÿÿÿßÿÿÿÿÿÿûßÿÿÿÿÿÿûÿÿÿÿÿÿÿûûûÿßûÿßÿûÿÿÿÿûÿÿÿÿÿÿÿÿÿÿÿÿÿÿûûÿÿûÿÿûÿÿÿÿÿûÛÿÿÿÿÿßÿÿßÿûÿÿÿÿÿûÿÿÿÿÿÿÿÛÿÿÛÿßÿûÿÿÿÿÿÿÿûÿÿÿÿûÿÿÿûûÿûÿÿûÿÿÿÿÿßÿÿÿßûÿûÿÿÿûßÿûßÿûÿÿÿÿûÿÿÿÿûûÿÿûÿÿÿûÿÿÿÿûûÿßÿÿûûûÿÿÿûûÿÿûûÿÿÿÿÿÿÿÿÿÿÿûûÿÛÿÿÿÿÿÿÿÿÿßÿÿÿÿÿÿûÿÿÛÿÿÿûÿÛßÿÿÿÿûÿÿßûÿÿûÿûÿûÿûÿÛßÿÿÿÿÿûÿÿÿûûÿÿÿÿÿÿÿÿÿûûÿÿÿÿÿÿûÿûÿÿÿÿßÿûÿßÿÿÿûÿÿûÿÿÿÿÿÿÿÿÿÿÿÿûûÿßÿÿÿÿÿÿûÿÿÿûÿÿÿÿÿÿÿûÿÿûÿÿÿÿÿÿÿÿûÿûÿûÿÿßÿÿÛßÿÿûÿÿÿ­
ÿÿÿÿÿÿÿÿßßÿÿÿÿÿûÿûÿûÿûÿÿÿûûÿûûÿßÿÿÿÿûÿÿÿûßÿÿÿûÿÿÿÿßûûÿÿÿÿÿûûÿÿÿûÿÿûÿÿÿÿÿÿûÿÿûûÿÿÿÿÿÿÿûûÛÿÿÿÿÿÿÿÿÿßÿÿÿÿÿÿÿÿÿÿÿÿûûÿÿÿÿÿûÿÿÿûÛÿÿÿûÿÿÿÿÿÿÿÿÿÿûÿûÿÿÿÿûûÿßûÿßûûÿÿÿÿÿûïÿÿûÛÿÿÿÿÿÿûÿÿÿÿÿÿÿÿÿßûÿÿÿÿÿÿÿÿûÿÿÿÿÿÿÿÿÿÿûûÿÿÿÿûÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿßÿûÿßÿÿÿûßûûûÿûûÿÿÿûÿÿÿÿÿÿßûÿÿûÿûßÿûÿÿÿûÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿßßÿÿÿÿÿÿûÿÿÿÿßÿûûÿß...............

please I'm bloqued and I shoud find a solution, please help me.

I am not famliar with the board you have so I may be wrong. but it sounds like you have the wrong settings on your terminal (baud rate, bits, stop bit) or you do not have the correct cable. I wish I could say more, but I do not support this board. Have you tried contacting the company you bought it from or gone onto their website for support?

Gerald