Infra red strange problem

[wk_vigorous]

Hi, guys! I am using IR port on pocket pc to communicate with other device. When I used emulator on desktop, it can work correctly. But I use it on real pocket pc, what the routine gets from IR port is error code, such as 255 instead of ACII code. But via Hperterminal monitoring, the monitor display correct ACII code. Why it happened? You know the sourcecode running on emulator and real Pocket PC is same. So do you think I should do some configurations on the IR port via code? If so, and how? Thanks a lot vigorous