blob: 282ac035538bd5d25f547a1bdc19edca27312787 (
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
|
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
entity tb_unaries is
end;
architecture behav of tb_unaries is
type sl_map_type is array (std_ulogic) of character;
constant sl_map : sl_map_type := "UX01ZWLH-";
function to_string(v : std_logic_vector) return string
is
alias av : std_logic_vector(1 to v'length) is v;
variable res : string (1 to v'length);
begin
for i in res'range loop
res (i) := sl_map (av (i));
end loop;
return res;
end to_string;
signal li : integer;
signal l4 : std_logic_vector (3 downto 0);
signal plus_u4u : std_logic_vector (3 downto 0);
signal plus_s4s : std_logic_vector (3 downto 0);
signal minus_s4s : std_logic_vector (3 downto 0);
signal abs_s4s : std_logic_vector (3 downto 0);
signal plus_u4v : std_logic_vector (3 downto 0);
signal plus_s4v : std_logic_vector (3 downto 0);
signal minus_s4v : std_logic_vector (3 downto 0);
signal abs_s4v : std_logic_vector (3 downto 0);
begin
dut: entity work.unaries
port map (
l4 => l4,
plus_u4u => plus_u4u,
plus_s4s => plus_s4s,
minus_s4s => minus_s4s,
abs_s4s => abs_s4s,
plus_u4v => plus_u4v,
plus_s4v => plus_s4v,
minus_s4v => minus_s4v,
abs_s4v => abs_s4v);
process
begin
for i in -8 to 7 loop
li <= i;
l4 <= conv_std_logic_vector (i, 4);
wait for 1 ns;
report "u4u: + " & integer'image(i) & " = " & to_string(plus_u4u);
report "s4s: + " & integer'image(i) & " = " & to_string(plus_s4s);
report "s4s: - " & integer'image(i) & " = " & to_string(minus_s4s);
report "s4s: abs " & integer'image(i) & " = " & to_string(abs_s4s);
report "u4v: + " & integer'image(i) & " = " & to_string(plus_u4v);
report "s4v: + " & integer'image(i) & " = " & to_string(plus_s4v);
report "s4v: - " & integer'image(i) & " = " & to_string(minus_s4v);
report "s4v: abs " & integer'image(i) & " = " & to_string(abs_s4v);
end loop;
wait;
end process;
end behav;
|
