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entity tb_dff07 is
end tb_dff07;
library ieee;
use ieee.std_logic_1164.all;
architecture behav of tb_dff07 is
signal clk : std_logic;
signal en1 : std_logic;
signal en2 : std_logic;
signal din : std_logic;
signal dout : std_logic;
begin
dut: entity work.dff07
port map (
q1 => dout,
d => din,
en1 => en1,
en2 => en2,
clk => clk);
process
procedure pulse is
begin
clk <= '0';
wait for 1 ns;
clk <= '1';
wait for 1 ns;
end pulse;
begin
en1 <= '1';
en2 <= '1';
din <= '0';
pulse;
assert dout = '0' severity failure;
din <= '1';
pulse;
assert dout = '1' severity failure;
en1 <= '0';
din <= '0';
pulse;
assert dout = '1' severity failure;
en1 <= '1';
din <= '0';
pulse;
assert dout = '0' severity failure;
en2 <= '0';
din <= '1';
pulse;
assert dout = '0' severity failure;
en2 <= '1';
din <= '1';
pulse;
assert dout = '1' severity failure;
wait;
end process;
end behav;
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