When the values of A$,$ B$,$ C$,$ and D are $1,5,9,$ and $5,$ respectively, the value of Z in $4$ bytes will be $0$x$\_\_\_\_0$x$\_\_\_\_0$x$\_\_\_\_0$x$\_\_\_\_$

$\_\_\_$FF$\_\_\_(25\%)$

$\_\_\_$FF$\_\_\_(25\%)$

$\_\_\_$FF$\_\_\_(25\%)$

$\_\_\_$D$9\_\_\_(25\%)$

Repeat Part $3$ with the assumption that A$,$ B$,$ C$,$ D$,$ and Z are $8-$bit values in memory. You can initialize them by using a DCB directive instead of a DCD$.$ Modify your code accordingly to deal with these byte variables.

Use the Keil simulator to write, assemble, and run the above program.

What is the value of Z $(1$ byte$)$ after running the program?$$

Write this byte value in hexadecimal in the box. Do not write more than two hexadecimal digits in the box.