Answer to Question #83019 in Assembler for Kevin

Question

3) Suppose you have an empty generic stack. Indicate which of the following instructions will invoke a stack underflow.

1. Push 1
2. Push 2
3. Pop
4. Push 9
5. Pop
6. Pop
7. Pop
8. Pop
9. Push 3

Answer 1

In the program, the number of PUSH inclusions must be equal to the number of POP inclusions.

Line 6 indicates the number of PUSF = 3 and the number of POP = 3. A POP located on line 7 does not have a corresponding PUSH.