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module uut_forgen02(a, b, cin, y, cout);
parameter WIDTH = 8;
input [WIDTH-1:0] a, b;
input cin;
output [WIDTH-1:0] y;
output cout;
genvar i;
wire [WIDTH-1:0] carry;
generate
for (i = 0; i < WIDTH; i=i+1) begin:adder
wire [2:0] D;
assign D[1:0] = { a[i], b[i] };
if (i == 0) begin:chain
assign D[2] = cin;
end else begin:chain
assign D[2] = carry[i-1];
end
assign y[i] = ^D;
assign carry[i] = &D[1:0] | (^D[1:0] & D[2]);
end
endgenerate
assign cout = carry[WIDTH-1];
endmodule
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