1. Explain if operand is negative. Is there any pair of 8-bit numbers of different signs (one positive, one negative) that, when added together would cause an overflow on a 6502 processor? 2. When adding 2 numbers of the same sign (both positive or both negative) an overflow can occur. Is there a relationship between the XOR of the most significant bit of both operands and the most significant bit of the result? If so, what is it. If not, why ie: Op1(msb) XOR sum(msb) and Op2 (msb) XOR sum(msb)