The command-line tool allows to upload your 6809-binaries to a Vectrex game console provided that you got the VecMulti card by Richard Hutchison.
Usage: vecmultiupload DEVICE BINARY
Example: ./vecmultiupload /dev/ttyUSB0 demo.bin
The vectrex test rom demo.bin is included. You are free to use the few lines of code for any purpose may it be private or commercial. Millitary usage however, is strictly forbidden :)