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
|
module testbench();
reg [3:0] a, b;
initial begin
a = 1;
b = 2;
#1;
a = a + b;
b = a + b;
if (a !== 3)
begin
$display("FAILED -- a !== 3");
$finish;
end
if (b !== 5)
begin
$display("FAILED -- b !== 5");
$finish;
end
#2;
$display("PASSED");
end // initial begin
initial begin
#2;
if (a !== 3)
begin
$display("FAILED -- a (signal) !== 3");
$finish;
end
if (b !== 5)
begin
$display("FAILED -- b (signal) !== 5");
$finish;
end
end
endmodule // testbench
|
