@AE4WX
Com port in wine are symbolic located in the
<your home>/.wine/dosdevices/
Com1 is linked to /dev/ttyS0
Com2 to /dev/ttyS1 and so on
If you device is not listed you can add a new symlink
For adding a second usb serial adapter with name
/dev/ttyUSB1 as com10 you must enter the command
ln -s /dev/ttyUSB0 ~/.wine/dosdevices/com10