1.4.2. Sign Flag

Try these first

1. 1.

   What does the zero flag indicate?

   Hint

   Think about what happens during subtraction.

2. 2.

   What is an unconditional jump?

   Hint

   Recall examples of function calls.

3. 3.

   What does the sign flag indicate in CPU operations?

   • It's raised for negative results
   • It denotes a carry
   • It checks for zero

   Hint

   Think about signed numbers.

4. 4.

   True or False: An unconditional jump depends on the setting of flags.

   • True
   • False

   Hint

   Recall the definition of an unconditional jump.

5. 5.

   Write an assembly code snippet that utilizes conditional Jump instructions based on the zero flag demonstrating a loop that counts from 1 to 10.

   Hint

   Think about how the loop needs a counter and a condition to end.

6. 6.

   Discuss why it is necessary to utilize both types of jumps (conditional and unconditional) when programming.

   Hint

   Consider how programs need both flexibility and structure to operate effectively.