DOSBox USB to Serial RS232 on Linux

To setup a USB to serial converter to use with DOSBox on Linux:

  1. Note device ID for USB to serial adapter. Probably /dev/ttyUSB0.

    ll /dev/ttyUSB*
  2. allow non-sudo serial port access

    adduser $(whoami) plugdev
    chmod 666 /dev/ttyUSB0

    logout and login

  3. Edit ~/.dosbox/dosbox*.conf, under [serial] modify the serial1=dummy:

    serial1=directserial realport:ttyUSB0
  4. DOSBox should work with serial device on COM1


DOSbox config manual