XOR              Bitwise Logical XOR                            MASM Operator

expression1 XOR expression2

    Performs a bitwise logical XOR between expression1 and expression2.
    The following table shows the result of applying XOR between two
    single-bit numbers

                         Bit      Bit      Result
                          0        0         0
                          0        1         1
                          1        0         1
                          1        1         0