Exams/ece241 2014 q1c

Assume that you have two 8-bit 2's complement numbers, a[7:0] and b[7:0]. These numbers are added to produce s[7:0]. Also compute whether a (signed) overflow has occurred.

module top_module (
    input [7:0] a,
    input [7:0] b,
    output [7:0] s,
    output overflow
); //
 
    assign s = a+b;
    assign overflow = (a[7] ~^ b[7]) & (s[7] == a[7] ? 0 : 1);

endmodule