This is an assembler used for Emulated CPU project, written in Elixir.
To compile programs just call assembler <file_to_be_assembled.ecpu> <output_file.cecpu>
or just assembler <file_to_be_assembled.ecpu>
File extensions are important.
Firstly, check if Elixir is installed:
elixir -v
Then, go to root of project and run
mix escript.build
At this point assembler should be usable.