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);
    // write code here for or gate
    assign y = a | b;
endmodule

module not_gate(input a, output y);
    // write code here for not gate
    assign y = ~ a;
endmodule

// ============================================================
// XOR Gate
// ============================================================
module xor_gate (
    input  a, b,
    output y
);
    // TODO: declare intermediate wires
    wire n0,n1,a0,a1;
    // TODO: instantiate required gates
    not_gate g0(a,n0);
    not_gate g1(b,n1);
    and_gate g2(n0,b,a0);
    and_gate g3(a,n1,a1);
    or_gate g4(a0,a1,y);
endmodule