Chapter 2, Problem 18CRP

Explanation of Solution

The value in register $0\times 0$ when the machine finally executes the halt instruction at location$0\times FC$:

The bit patterns contained by the memory cells from $0\times \text{F0}$ to $0\times \text{FD}$ is given as follows:

Address	Contents
$0\times \text{F0}$	20
$0\times \text{F}1$	00
$0\times \text{F}2$	22
$0\times \text{F}3$	02
$0\times \text{F}4$	23
$0\times \text{F}5$	04
$0\times \text{F}6$	B3
$0\times \text{F7}$	FC
$0\times \text{F8}$	50
$0\times \text{F9}$	02
$0\times \text{FA}$	B0
$0\times \text{FB}$	F6
$0\times \text{FC}$	C0
$0\times \text{FD}$	00

If the machine with its program counter containing $$