This is a register-based virtual machine written in Go

Virtual machine supports the call subprogram

General registers:

ax, bx, cx, dx, ex, fx

Service registers:

ip - instruction pointer
cr - compare result
sp - stack pointer

Commands:

mov - moving values
add - adding values
sub - substruction values
mul - multiplication values
div - division values
cmp - comparison values
inc - increment value
dec - decrement value
je - goto if equal
jn - goto if not equal
jl - goto if less
jle - goto if less or equal
jg - goto if great
jge - goto if great or equal
call - move to subprogram address
ret - return from subprogram
hlt - exit
log - value output

Example #1 - calculate factorial(5)

Example #2 - calculate and output fibonacci numbers(12)