Assume A and B are signed 8-bit decimal integers stored in sign magnitude format. Calculate A

Question:

Assume A and B are signed 8-bit decimal integers stored in sign magnitude format. Calculate A – B. Is there overflow, underflow, or neither?

Overflow occurs when a result is too large to be represented accurately given a finite word size. Underflow occurs when a number is too small to be represented correctly—a negative result when doing unsigned arithmetic, for example. (The case when a positive result is generated by the addition of two negative integers is also referred to as underflow by many, but in this textbook, that is considered an overflow.) The following table shows pairs of decimal numbers. a. b. A 216 185 B 255 122