// // Copyright 2011 Ettus Research LLC // module add2 #(parameter WIDTH=16) (input [WIDTH-1:0] in1, input [WIDTH-1:0] in2, output [WIDTH-1:0] sum); wire [WIDTH:0] sum_int = {in1[WIDTH-1],in1} + {in2[WIDTH-1],in2}; assign sum = sum_int[WIDTH:1]; // Note -- will have some bias endmodule // add2