Reading data from a ROM

It's what I did, but I don't seem to get anything on the output... tried several different ways too.

    port
    (
        -- 50MHz clock
        clock          : in std_logic;
        reset       : in std_logic;
        ver         :    out std_logic_vector(15 downto 0)
    );
----------
    component rom                     -- MegaWizard created rom
    port
    (
        address    : in  std_logic_vector(4 downto 0);
        clock        : in  std_logic;
        q        : out std_logic_vector(7 downto 0)
    );
    signal addr_rom        : std_logic_vector(4 downto 0);
    signal data_out_rom    : std_logic_vector(7 downto 0);
    
    type state is (addr0, addr1);
    signal st : state;
----------
    rom_inst : rom
    port map
    (
        address    => addr_rom,
        clock         => clock,
        q         => data_out_rom
    );
    process(reset, clock)
    begin
        if reset = '1' then
            st <= addr0;
        elsif rising_edge(clock) then
            case st is
                when addr0 =>
                    addr_rom    <= "00000";
                    ver(15 downto 8) <= data_out_rom;
                    st <= addr1;
                when addr1 =>
                    addr_rom    <= "00001";
                    ver(7 downto 0) <= data_out_rom;
                                        st <= addr0;
                when others =>
                    st <= addr0;
            end case;
        end if;
    end process;