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37 changes: 32 additions & 5 deletions Wallace5x5/final_adder.sv
Original file line number Diff line number Diff line change
@@ -1,6 +1,33 @@
// design a 10bit carry lookahead adder
module final_adder(a, b, s);
input logic [9:0] a, b;
output logic [9:0] s;
//start from here
// Design a 10-bit Carry Lookahead Adder
module final_adder(
input logic [9:0] a, // 10-bit input A
input logic [9:0] b, // 10-bit input B
output logic [9:0] s, // 10-bit sum output
output logic carry_out
);
logic [9:0] generate;
logic [9:0] propagate;
logic [10:0] carry;

// Generate and Propagate Logic
assign generate = a & b;
assign propagate = a | b;

//logic
assign carry[0] = 1'b0; //assumed to be 0
assign carry[1] = generate[0] | (propagate[0] & carry[0]);
assign carry[2] = generate[1] | (propagate[1] & carry[1]);
assign carry[3] = generate[2] | (propagate[2] & carry[2]);
assign carry[4] = generate[3] | (propagate[3] & carry[3]);
assign carry[5] = generate[4] | (propagate[4] & carry[4]);
assign carry[6] = generate[5] | (propagate[5] & carry[5]);
assign carry[7] = generate[6] | (propagate[6] & carry[6]);
assign carry[8] = generate[7] | (propagate[7] & carry[7]);
assign carry[9] = generate[8] | (propagate[8] & carry[8]);
assign carry_out = generate[9] | (propagate[9] & carry[9]);

// sum Calculation
assign s = a ^ b ^ carry[9:0];

endmodule