blob: 9fa73ec055e726ccd47875315874346bb4cd19a0 (
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
|
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity psl_test_cover is
end entity psl_test_cover;
architecture test of psl_test_cover is
signal s_rst_n : std_logic := '0';
signal s_clk : std_logic := '0';
signal s_write : std_logic;
signal s_read : std_logic;
begin
s_rst_n <= '1' after 100 ns;
s_clk <= not s_clk after 10 ns;
TestP : process is
begin
report "RUNNING PSL_TEST_COVER test case";
report "================================";
s_write <= '0';
s_read <= '0';
wait until s_rst_n = '1' and rising_edge(s_clk);
s_write <= '1'; -- cover should hit
wait until rising_edge(s_clk);
s_read <= '1'; -- assertion should hit
wait until rising_edge(s_clk);
s_write <= '0';
s_read <= '0';
wait;
end process TestP;
-- -psl statements
-- psl default clock is rising_edge(s_clk);
-- cover directive seems not supported (ignored by GHDL)
-- psl cover always (s_write -> not(s_read));
end architecture test;
|
