3.1.3. Carry Flag vs Overflow Flag

Try these first

1. 1.

   What does the carry flag indicate?

   Hint

   Think about what happens during an addition operation.

2. 2.

   Can the overflow flag indicate a valid arithmetic result?

   Hint

   Remember the definition of the overflow flag.

3. 3.

   What does the carry flag indicate?

   • It checks the sign of the result
   • It shows if a carry out occurred
   • It indicates the number of bits used

   Hint

   Focus on overflow implications in arithmetic.

4. 4.

   True or False: The overflow flag can indicate that the result is valid.

   • True
   • False

   Hint

   Recall the purpose of the overflow flag.

5. 5.

   If you add 15 and 2 in a 4-bit unsigned arithmetic, what flags will be set?

   Hint

   Consider how many bits are allowed and what's generated.

6. 6.

   How would you write a conditional statement to handle overflow in a signed addition operation?

   Hint

   Think about the consequences of an overflow.