Using 6809 assembly programming language. Please also explain how to arrive at each answer if possible.

PART 1: 1. Please add comments for each line.

a. Explain what the program intends to do. (Each line)

b. Assemble the code by hand. (Write each line in binary)

2. Run the program through the simulator

3. What is the content of %r4 after this program is executed?

! Program 1 !

Hint: op3 for subcc is 010100

.begin .

org 2048

dstart .equ 4000

ld [a], %r1

ld [b], %r2

ld [c], %r3

addcc %r2, %r3, %r0

addcc %r1, %r0, %r4

subcc %r2, %r4, %r2

st %r0, [a]

st %r2, [y]

jmpl %r15 + 4, %r0

.org dstart

a: 15

b: 54

c: -29

y: 0

.end