blob: a07fb1c19a5ac5b1083c79e2bbb9241276d5c7ef (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
entity tb_ent is
end tb_ent;
library ieee;
use ieee.std_logic_1164.all;
architecture behav of tb_ent is
signal clk : std_logic;
signal dout : std_logic;
signal set : std_logic;
signal reset : std_logic;
begin
dut: entity work.ent
port map (
set => set,
reset => reset,
q => dout,
clk => clk);
process
procedure pulse is
begin
clk <= '0';
wait for 1 ns;
clk <= '1';
wait for 1 ns;
end pulse;
begin
set <= '1';
reset <= '0';
pulse;
assert dout = '1' severity failure;
set <= '0';
reset <= '0';
pulse;
assert dout = '0' severity failure;
set <= '0';
reset <= '0';
pulse;
assert dout = '1' severity failure;
set <= '0';
reset <= '1';
pulse;
assert dout = '0' severity failure;
set <= '1';
reset <= '1';
pulse;
assert dout = '1' severity failure;
set <= '0';
reset <= '0';
pulse;
assert dout = '0' severity failure;
wait;
end process;
end behav;
|