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How to pass communication port from Windows 7 to Windows Virtual PC?

Problem

Some older software is not compatible with Windows 7. The software can be run in Windows XP in Windows Virtual PC. However, problem arises when older software needs to access communication port such as RS-232 port.

Solution

Physical ports in Windows 7 can be mapped to Virtual PC.

  1. Make sure that communication port is available in Windows 7 through Windows 7 Device Manager. Also note down its port number.001 - Check Comm Port Number in Win7
  2. Click on Tools -> Settings in Virtual PC title bar.
    002 - Click on Settings
  3. Map Com1 in Virtual PC to Com4 in Windows 7. After that, software in Virtual PC and access com 4 through Virtual PC com1.003 - Map Virtual Comm port to physical comm port

 

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