How to Write an XNOR Operation #
a ~^ bXNOR Truth Table #
| A | B | A XNOR B |
|---|---|---|
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
Example #
module top_module (
input a, b, c, d, e,
output [24:0] out
);
wire [24:0] top, bottom;
assign top = { {5{a}}, {5{b}}, {5{c}}, {5{d}}, {5{e}} };
assign bottom = {5{a,b,c,d,e}};
assign out = ~top ^ bottom; // Bitwise XNOR
// This could be done on one line:
// assign out = ~{ {5{a}}, {5{b}}, {5{c}}, {5{d}}, {5{e}} } ^ {5{a,b,c,d,e}};
endmodule