blob: dded6b21a60c563e8b7810417b70150302222d3d (
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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
entity tb_ram41 is
end tb_ram41;
library ieee;
use ieee.std_logic_1164.all;
architecture behav of tb_ram41 is
constant WIDTH : natural := 8;
constant ADDRWIDTH : natural := 12;
signal clk_a : std_logic;
signal read_a : std_logic;
signal write_a : std_logic;
signal addr_a : std_logic_vector(ADDRWIDTH - 1 downto 0);
signal data_read_a : std_logic_vector(WIDTH - 1 downto 0);
signal data_write_a : std_logic_vector(WIDTH - 1 downto 0);
signal clk_b : std_logic;
signal read_b : std_logic;
signal write_b : std_logic;
signal addr_b : std_logic_vector(ADDRWIDTH - 1 downto 0);
signal data_read_b : std_logic_vector(WIDTH - 1 downto 0);
signal data_write_b : std_logic_vector(WIDTH - 1 downto 0);
begin
tdp_ram_1: entity work.ram41
generic map (
ADDRWIDTH => ADDRWIDTH,
WIDTH => WIDTH)
port map (
clk_a => clk_a,
read_a => read_a,
write_a => write_a,
addr_a => addr_a,
data_read_a => data_read_a,
data_write_a => data_write_a,
clk_b => clk_b,
read_b => read_b,
write_b => write_b,
addr_b => addr_b,
data_read_b => data_read_b,
data_write_b => data_write_b);
process
procedure pulsea is
begin
clk_a <= '0';
wait for 1 ns;
clk_a <= '1';
wait for 1 ns;
end pulsea;
procedure pulseb is
begin
clk_b <= '0';
wait for 1 ns;
clk_b <= '1';
wait for 1 ns;
end pulseb;
begin
clk_a <= '0';
clk_b <= '0';
write_a <= '1';
read_a <= '0';
addr_a <= x"000";
data_write_a <= x"a0";
pulsea;
write_b <= '1';
read_b <= '0';
addr_b <= x"001";
data_write_b <= x"b1";
pulseb;
write_a <= '0';
read_a <= '1';
addr_a <= x"001";
pulsea;
assert data_read_a = x"b1" severity failure;
write_b <= '0';
read_b <= '1';
addr_b <= x"000";
pulseb;
assert data_read_b = x"a0" severity failure;
wait;
end process;
end behav;
|
