computer.rb

# This is my fantasy for what I should be able to do with RubyGate.
# The basic VHDL translation is taken care of at the lowest level, and
# then I can build a "computer" DSL on top of it in pure Ruby. The
# generated VHDL might not be the fastest, most effiecient, or clearest,
# but it's really just an assembly language.
computer do |c|
  c.instruction "add" do |x, y|
    x+y
  end

  c.instruction "subtract" do |x, y|
    x-y
  end

  c.instruction "move" do |addr1, addr2|
    memory[addr2] = memory[addr1]
  end

  c.instruction "jump" do |addr|
    next_instruction = addr
  end

  c.instruction "jeq", "Jump if equal" do |x, y, addr|
    if x == y
      next_instruction = addr
    end
  end
end