This article first introduces the working mechanism of the device manager in Windows CE.NET.Then the naming rules of serial devices are analyzed.On the basis of the former points
configuration methods of serial port registry and allocation methods of serial port address in Windows CE.NET with x86 architecture are probed into deeply.At the end of this article
a solution that adds another serial port to the platform is provided and detailed explanations on how to recapture the serial port at address 0x03F8 in order to make this port applicable in running in Windows CE are given.