library ieee;

entity ap_a_02 is
end entity ap_a_02;


architecture test of ap_a_02 is

  use ieee.std_logic_1164.all;

  signal request_enable, request, ready : std_logic;

begin

  process (request_enable, request, ready)
  begin

    -- code from book

    if request_enable = '1' then
      request <= ready;
    else
      request <= 'Z';
    end if;

    -- end code from book

  end process;

end architecture test;