testhehe.vhd

DDS 的设计应用 DDS 的设计应用

-- simulation model.
--
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE ieee.numeric_std.ALL;

ENTITY testleijia1 IS
END testleijia1;

ARCHITECTURE behavior OF testleijia1 IS 

	COMPONENT leijia1
	port(A, res,clock : in std_logic;
        Q1 ,cout1 : out std_logic);
	END COMPONENT;
        constant clkcle:time:=10 ns;
	SIGNAL clk :  std_logic;
	SIGNAL res :  std_logic;
	SIGNAL A :  std_logic;
	SIGNAL Q1 :  std_logic;
	SIGNAL cout1 :  std_logic;

BEGIN

	uut: leijia1 PORT MAP(
		 A,
		 res,
		 clk,
		 Q1,
		 cout1
	);

--clk_gen
   clk_gen: process
     begin
        clk<='1';
         wait for clkcle/4;
	loop
         clk<='0';
	wait for clkcle/2;
	clk<='1';
	wait for clkcle/2;
       end loop;
    end process;   
-- *** Test Bench - User Defined Section ***
   tb : PROCESS
      BEGIN
     -- din<=(others=>'0')
      res<='0';
       A<='0';
      wait for 10*clkcle;
      res<='1';
   
      wait for clkcle;
  A<='1';
      wait for 5*clkcle;
  A<='0';
      wait for 5*clkcle;
  A<='1';
      wait; -- will wait forever
   END PROCESS;
-- *** End Test Bench - User Defined Section ***

END;