taichi-ishitani/rggen

list_item :bit_field, :type, [:w0s, :w1s] do
  register_map do
    read_write
    need_initial_value
  end

  rtl do
    build do
      output :register_block, :value_out,
             name:          "o_#{name}",
             data_type:     :logic,
             width:         width,
             dimensions:    dimensions,
             array_format:  array_port_format
       input :register_block, :clear,
             name:          "i_#{name}_clear",
             data_type:     :logic,
             width:         width,
             dimensions:    dimensions,
             array_format:  array_port_format
    end

    generate_code_from_template :bit_field

    def initial_value
      hex(bit_field.initial_value, width)
    end

    def set_value
      { w0s: 0, w1s: 1 }[type]
    end
  end
end