: If using DOSBox, map your physical COM1 port to the virtual environment (e.g., serial1=directserial realport:com1 ).

: While native to Windows 3.1 or DOS, it can be run on Windows 10 using DOSBox paired with a Windows 3.1 installation pack. 2. Hardware and Programming Cables

: Install the USB-to-Serial drivers for your cable before plugging it in. COM Port Configuration : Open Device Manager on your PC.