wild_equality_operator.sv

module wild_equality_operator ();

bit [7:0] data = 8'hFF;

initial begin
  // Compare with wild equality
  if (data ==? 8'b1xxx_z1xz) begin  // match
    $display ("Data %b matches with %b", data,  8'b1xxx_z1xz);
  end
  // Compare with wild non-equality
  if (data !=? 8'b1xxx_z1x0) begin // doesn't match
    $display ("Data %b does not matches with %b", data,  8'b1xxx_z1x0);
  end
  #1 $finish;
end

endmodule