Completato modulo TwoComplement

TwoComplementTest.vhd

@@ -0,0 +1,85 @@
+LIBRARY ieee;
+USE ieee.std_logic_1164.ALL;
+ 
+-- Uncomment the following library declaration if using
+-- arithmetic functions with Signed or Unsigned values
+--USE ieee.numeric_std.ALL;
+ 
+ENTITY TwoComplementTest IS
+END TwoComplementTest;
+ 
+ARCHITECTURE behavior OF TwoComplementTest IS 
+ 
+    -- Component Declaration for the Unit Under Test (UUT)
+ 
+    COMPONENT TwoComplement
+    PORT(
+         DIFF_EXP_C2 : IN  std_logic_vector(7 downto 0);
+         DIFF_EXP : OUT  std_logic_vector(7 downto 0)
+        );
+    END COMPONENT;
+    
+
+   --Inputs
+   signal DIFF_EXP_C2 : std_logic_vector(7 downto 0) := "00000000";
+
+ 	--Outputs
+   signal DIFF_EXP : std_logic_vector(7 downto 0);
+	signal clock : std_logic;
+   -- No clocks detected in port list. Replace clock below with 
+   -- appropriate port name 
+ 
+   constant clock_period : time := 10 ns;
+ 
+BEGIN
+ 
+	-- Instantiate the Unit Under Test (UUT)
+   uut: TwoComplement PORT MAP (
+          DIFF_EXP_C2 => DIFF_EXP_C2,
+          DIFF_EXP => DIFF_EXP
+        );
+
+   -- Clock process definitions
+   clock_process :process
+   begin
+		clock <= '0';
+		wait for clock_period/2;
+		clock <= '1';
+		wait for clock_period/2;
+   end process;
+ 
+
+   -- Stimulus process
+   stim_proc: process
+   begin		
+      -- hold reset state for 100 ns.
+      wait for 100 ns;	
+
+      wait for clock_period*10;
+
+      -- insert stimulus here 
+
+      wait;
+   end process;
+	
+	test_process :process
+   begin
+		DIFF_EXP_C2 <= "01001110";
+		wait for clock_period;
+		DIFF_EXP_C2 <= "11111111";
+		wait for clock_period;
+		DIFF_EXP_C2 <= "10000000";
+		wait for clock_period;
+		DIFF_EXP_C2 <= "01111111";
+		wait for clock_period;
+		DIFF_EXP_C2 <= "01100101";
+		wait for clock_period;
+		DIFF_EXP_C2 <= "10011101";
+		wait for clock_period;
+		DIFF_EXP_C2 <= "11100010";
+		wait for clock_period;
+		DIFF_EXP_C2 <= "10010011";
+		wait for clock_period;
+   end process;
+
+END;