Answer
See the explanation
Work Step by Step
To perform a pop operation on the stack described in Figure 8.12, where the stack pointer is in register F and the top of the stack is to be popped into register 5, you can write the following machine language routine:
```
POP:
LOAD F, R1 ; Load the stack pointer into a temporary register
SUB 1, R1, R1 ; Decrement the stack pointer to point to the top of the stack
LOAD (R1), R5 ; Load the value at the top of the stack into register 5
STORE R1, F ; Update the stack pointer to point to the new top of the stack
HALT ; Halt the execution
```
This routine first loads the current stack pointer into a temporary register, decrements the stack pointer to point to the top of the stack, loads the value at the top of the stack into register 5, updates the stack pointer to point to the new top of the stack, and then halts the execution.
