It is simple implementation of Virtual Machine with its own asm language and Von Neumann architecture. It has assembler, cpu and disassembler.

• !var int 42 create int variable with name var and value 42
• .lbl defines label, related to the code above
• % prefix means register
• ! prefix means variable
• in, out <smth> read from / write to stdin / stdout
• go <smth> jump to specified label
• if<, if>, if= <a> <b> compares a and b, executes code right after compare if true, otherwise jumps to fi
• ret return to the caller
• push, pop <smth> push or pop value to or from stack
• mov <dest> <src> move src to dest
• add, sub <dest> <src> add or sub src to dest

./main <path-to-file> or go main <path-to-file>, where file is written in gasm language and has .gasm extension.

Or you can run demo: ./main or go main
It will execute asm_data/fibonacci.gasm file, which is a recursive version of fibonacci calculation.

main will generate binary file, execute it, and also disassemble it back.