Referfence manual and more information archived here:
http://retro.hansotten.nl/6502-sbc/lee-davison-web-site/enhanced-6502-basic/
You must have on your development system:
- VSCode. This has its own installer.
- A source install of this CC65.
- The following suite of tools for your specific OS.
$ sudo apt-get install cmake python3 pip git build-essential
$ pip install pyserial