9. XOR Gate Using Basic Gates

How do you plan to solve it?

// ============================================================
// Basic Gates (given)
// ============================================================
module and_gate(input a, b, output y);
    assign y = a & b;
endmodule

module or_gate(input a, b, output y);
    assign y = a | b;

endmodule

module not_gate(input a, output y);
    assign y = ~a;
endmodule

// ============================================================
// XOR Gate
// ============================================================
module xor_gate (
    input  a, b,
    output y
);
    wire n1,n2,a1,a2;
    not_gate not1 (.a(b),.y(n1));
    not_gate not2 (.a(a),.y(n2));
    and_gate and1 (.a(a),.b(n1),.y(a1));
    and_gate and2 (.a(n2),.b(b),.y(a2));
    or_gate or1(.a(a1),.b(a2),.y(y));



endmodule