blob: 6dfc2e54eff5736e8912f0264bd5a3fd657268df (
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
|
// 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_non_const_top(
// expected to output all 1s
output reg a, b, c, d, e, f, g, h
);
reg x_1b0 = 1'b0;
reg x_1b1 = 1'b1;
reg signed x_1sb0 = 1'sb0;
reg signed x_1sb1 = 1'sb1;
reg [1:0] x_2b0 = 2'b0;
reg [1:0] x_2b11 = 2'b11;
reg signed [1:0] x_2sb01 = 2'sb01;
reg signed [1:0] x_2sb11 = 2'sb11;
reg [2:0] x_3b0 = 3'b0;
initial begin
case (x_2b0)
x_1b0: a = 1;
default: a = 0;
endcase
case (x_2sb11)
x_2sb01: b = 0;
x_1sb1: b = 1;
endcase
case (x_2sb11)
x_1sb0: c = 0;
x_1sb1: c = 1;
endcase
case (x_2sb11)
x_1b0: d = 0;
x_1sb1: d = 0;
default: d = 1;
endcase
case (x_2b11)
x_1sb0: e = 0;
x_1sb1: e = 0;
default: e = 1;
endcase
case (x_1sb1)
x_1sb0: f = 0;
x_2sb11: f = 1;
default: f = 0;
endcase
case (x_1sb1)
x_1sb0: g = 0;
x_3b0: g = 0;
x_2sb11: g = 0;
default: g = 1;
endcase
case (x_1sb1)
x_1sb0: h = 0;
x_1b1: h = 1;
x_3b0: h = 0;
x_2sb11: h = 0;
default: h = 0;
endcase
end
endmodule
|