cycloneIII configuration problems

thank you very much

my configuration device is epcs16. and hardware is byteplasterII. i can program FPGA successfully but it did not seems work fine. i program the same code to starixII it can work fine. here is my test code:

library ieee;

use ieee.std_logic_1164.all;

entity test is

port

(

clk : in std_logic;

clk_out : out std_logic;

A0 : out std_logic;

A1 : out std_logic

);

end entity;

architecture rtl of test is

begin

A0 <= '0';

A1 <= '0';

clk_out <= clk;

end rtl;