3.4. Conclusion and Next Steps

Try these first

1. 1.

   What happens when the overflow flag is set?

   Hint

   Think about what the bits represent in signed arithmetic.

2. 2.

   What does the carry flag indicate?

   Hint

   Consider operations involving non-negative integers.

3. 3.

   What does the overflow flag represent?

   • A signal of carry in unsigned operations
   • Sign of an arithmetic overflow
   • A flag for even parity

   Hint

   Think about adding negative numbers.

4. 4.

   When is the carry flag set?

   • True
   • False

   Hint

   Consider unsigned arithmetic scenarios.

5. 5.

   Given two 4-bit signed integers, analyze the outcomes when adding them. Determine if the overflow flag is triggered and explain why.

   Hint

   Examine the signs of the operands.

6. 6.

   Create a scenario involving an unsigned addition that involves the carry flag, and describe the effects if it were mishandled in a program.

   Hint

   Think about sum operations past the bit limit.