4, [

6

points] Use the

register and memory values in the table below for this question. Assume a 32

-

bit machine. Assume each of

the following questions starts from the table values; that is, DO NOT use value changes from one question as propagating into

future parts of the quest

ion.

Register

Value

Memory Location

Value

R1

12

12

16

R2

16

16

20

R3

20

20

24

R4

24

24

28

a)

Give the values of R1, R2, and R3 after this instruction:

add

R

1

, R2, R

3

b)

What values will be in R1 and R3 after th

is instruction is executed: lw

R2

,

8

(R1)

c)

What

values will be in R2 and R4

after this instruction is executed:

add

i R2, R

4

, #

16