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alu_ctrl_test_alu_tb.vhd (1663B)


      1 library ieee;
      2 use ieee.std_logic_1164.all;
      3 
      4 entity alu_ctrl_test_alu_tb is
      5 end alu_ctrl_test_alu_tb;
      6 
      7 architecture behav of alu_ctrl_test_alu_tb is
      8 
      9 signal s_sz:		natural := 4;
     10 signal s_t_funct:	std_logic_vector(5 downto 0);
     11 signal s_t_alu_op:	std_logic_vector(1 downto 0);
     12 signal s_t_alu_in1:	std_logic_vector(s_sz-1 downto 0);
     13 signal s_t_alu_in2:	std_logic_vector(s_sz-1 downto 0);
     14 signal s_t_alu_out:	std_logic_vector(s_sz-1 downto 0);
     15 signal s_t_alu_zero:	std_logic;
     16 
     17 component alu_ctrl_test_alu is generic (
     18 	t_sz:		natural := 4
     19 );
     20 port (
     21 	t_funct:	in std_logic_vector(5 downto 0);
     22 	t_alu_op:	in std_logic_vector(1 downto 0);
     23 	t_alu_in1:	in std_logic_vector(t_sz-1 downto 0);
     24 	t_alu_in2:	in std_logic_vector(t_sz-1 downto 0);
     25 	t_alu_out:	out std_logic_vector(t_sz-1 downto 0);
     26 	t_alu_zero:	out std_logic
     27 );
     28 end component;
     29 
     30 begin
     31 	uut: alu_ctrl_test_alu port map (
     32 		t_funct => s_t_funct,
     33 		t_alu_op => s_t_alu_op,
     34 		t_alu_in1 => s_t_alu_in1,
     35 		t_alu_in2 => s_t_alu_in2,
     36 		t_alu_out => s_t_alu_out,
     37 		t_alu_zero => s_t_alu_zero
     38 	);
     39 
     40 	process begin
     41 		s_t_alu_in1 <= "1100";
     42 		s_t_alu_in2 <= "1100";
     43 
     44 		s_t_alu_op <= "00";
     45 		s_t_funct <= "001001";
     46 		wait for 250 ns;
     47 
     48 		s_t_alu_op <= "00";
     49 		s_t_funct <= "001010";
     50 		wait for 250 ns;
     51 
     52 		s_t_alu_op <= "01";
     53 		s_t_funct <= "100111";
     54 		wait for 250 ns;
     55 
     56 		s_t_alu_op <= "10";
     57 		s_t_funct <= "100000";
     58 		wait for 250 ns;
     59 
     60 		s_t_alu_op <= "10";
     61 		s_t_funct <= "100010";
     62 		wait for 250 ns;
     63 
     64 		s_t_alu_op <= "10";
     65 		s_t_funct <= "100100";
     66 		wait for 250 ns;
     67 
     68 		s_t_alu_op <= "10";
     69 		s_t_funct <= "100101";
     70 		wait for 250 ns;
     71 
     72 		s_t_alu_op <= "10";
     73 		s_t_funct <= "101010";
     74 		wait for 250 ns;
     75 	end process;
     76 end behav;