> 2.2 | Handling of the Physical Serial Port

> When the physical port is opened, the WinMux driver initializes it. During the initialization the physical port is set to hardware handshake. This means the RTS and CTS signals on the port side are controlled by hardware and the WinMux device driver. The DTR signal is set to 1. The port mode is set to 8 bits, 1 stop bit, no parity. The baud rate can be configured using the winmux2k.inf file or the Serial Multiplexer property page. If fast baud rates are selected (e.g., 115200 bps) the receive FIFO of the UART should be configured for a size of 8 bytes. This can be done using the property page of the COM Port in the device manager.

> Table 1: | Physical serial port

> Signal | Description
> RTS/CTS | Hardware controlled
> DTR | Set to 1
> Baud rate | Variable, parameter read from registry
> Data bits | 8
> Parity | No
> Stop bits | 1