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
|
// Note: case_expr_{,non_}const.v should be modified in tandem to ensure both
// the constant and non-constant case evaluation logic is covered
module case_expr_const_top(
// expected to output all 1s
output reg a, b, c, d, e, f, g, h
);
initial begin
case (2'b0)
1'b0: a = 1;
default: a = 0;
endcase
case (2'sb11)
2'sb01: b = 0;
1'sb1: b = 1;
endcase
case (2'sb11)
1'sb0: c = 0;
1'sb1: c = 1;
endcase
case (2'sb11)
1'b0: d = 0;
1'sb1: d = 0;
default: d = 1;
endcase
case (2'b11)
1'sb0: e = 0;
1'sb1: e = 0;
default: e = 1;
endcase
case (1'sb1)
1'sb0: f = 0;
2'sb11: f = 1;
default: f = 0;
endcase
case (1'sb1)
1'sb0: g = 0;
3'b0: g = 0;
2'sb11: g = 0;
default: g = 1;
endcase
case (1'sb1)
1'sb0: h = 0;
1'b1: h = 1;
3'b0: h = 0;
2'sb11: h = 0;
default: h = 0;
endcase
end
endmodule
|
