

For RS422/485 one has to change the SpecCe50.inf file that comes with the driver disk. 
The following entry under [RegSettings] section of SpecCe50.inf 
  HKLM,%reg_path1%,1,0x00010001,192
  suggests that the first COM port of our device is gonna support RS422/485.
  "1" denotes the COM port number and "192"(C0) is the value to be given to make it work for RS422/485.

If the user has to use the first COM port of the second MCS7840 board, he has to give "5" instead of 1 in a new entry. The COM ports by default support RS232 and so there is no need for any settings.

Once the settings are done user has to run the following in the command prompt:

cabwiz.exe  [path of SpecCe50.inf the driver disk folder. (Ex: "c:\driverdisk\SpecCe50.inf")]

cabwiz.exe is obtained by installing Platform Builder. 

