library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all; use work.report_sim_pkg.all; entity tb_top_level is end entity tb_top_level; architecture sim of tb_top_level is -------------------------------------------------------------------------------- -- Constants -------------------------------------------------------------------------------- constant c_WIDTH : positive := 8; -------------------------------------------------------------------------------- -- Signals -------------------------------------------------------------------------------- signal s_a : std_logic_vector(c_WIDTH - 1 downto 0); signal s_b : std_logic_vector(c_WIDTH - 1 downto 0); signal s_eq : std_logic; signal s_gt : std_logic; signal s_lt : std_logic; begin -------------------------------------------------------------------------------- -- Port Map -------------------------------------------------------------------------------- DUT : entity work.comparateur generic map (g_WIDTH => c_WIDTH) port map ( i_a => s_a, i_b => s_b, o_eq => s_eq, o_gt => s_gt, o_lt => s_lt ); -------------------------------------------------------------------------------- -- Stimulus -------------------------------------------------------------------------------- P_STIM : process variable v_pass : integer := 0; variable v_fail : integer := 0; variable v_count : integer := 0; begin s_a <= x"55"; s_b <= x"55"; wait for 10 ns; check_output(s_eq, '1', "A=B: eq", v_pass, v_fail, v_count); check_output(s_gt, '0', "A=B: gt", v_pass, v_fail, v_count); check_output(s_lt, '0', "A=B: lt", v_pass, v_fail, v_count); s_a <= x"AA"; s_b <= x"10"; wait for 10 ns; check_output(s_eq, '0', "A>B: eq", v_pass, v_fail, v_count); check_output(s_gt, '1', "A>B: gt", v_pass, v_fail, v_count); check_output(s_lt, '0', "A>B: lt", v_pass, v_fail, v_count); s_a <= x"01"; s_b <= x"FF"; wait for 10 ns; check_output(s_eq, '0', "AFE: eq", v_pass, v_fail, v_count); check_output(s_gt, '1', "FF>FE: gt", v_pass, v_fail, v_count); check_output(s_lt, '0', "FF>FE: lt", v_pass, v_fail, v_count); final_report("tb_comparateur", v_pass, v_fail); wait; end process P_STIM; end architecture sim;

N-bit Comparator