mirror of https://github.com/YosysHQ/yosys.git
45 lines
690 B
Coq
45 lines
690 B
Coq
|
|
||
|
|
module test_signed(a, b, c, d, y);
|
||
|
|
|
||
|
|
input [3:0] a, b, c;
|
||
|
|
input signed [3:0] d;
|
||
|
|
output reg [7:0] y;
|
||
|
|
|
||
|
|
always @* begin
|
||
|
|
if (a && b)
|
||
|
|
y = c;
|
||
|
|
else
|
||
|
|
y = d;
|
||
|
|
end
|
||
|
|
|
||
|
|
endmodule
|
||
|
|
|
||
|
|
module test_const(a, y);
|
||
|
|
|
||
|
|
input [3:0] a;
|
||
|
|
output reg [28:0] y;
|
||
|
|
|
||
|
|
always @*
|
||
|
|
case (a)
|
||
|
|
4'b0000: y = 0;
|
||
|
|
4'b0001: y = 11;
|
||
|
|
4'b0010: y = 222;
|
||
|
|
4'b0011: y = 3456;
|
||
|
|
4'b0100: y = 'b10010010;
|
||
|
|
4'b0101: y = 'h123abc;
|
||
|
|
4'b0110: y = 'o1234567;
|
||
|
|
4'b0111: y = 'd3456789;
|
||
|
|
4'b1000: y = 16'b10010010;
|
||
|
|
4'b1001: y = 16'h123abc;
|
||
|
|
4'b1010: y = 16'o1234567;
|
||
|
|
4'b1011: y = 16'd3456789;
|
||
|
|
4'b1100: y = "foobar";
|
||
|
|
4'b1101: y = "foobarfoobarfoobar";
|
||
|
|
4'b1110: y = 16'h1;
|
||
|
|
4'b1111: y = a;
|
||
|
|
default: y = 'bx;
|
||
|
|
endcase
|
||
|
|
|
||
|
|
endmodule
|
||
|
|
|