Question: 1 1 : 3 6 . cdn . fbsbx . com Done Given the following MIPS code. Show how the instructions will flow through the

11

36

.

cdn

.

fbsbx

.

com

Done

Given the following MIPS code.

Show how the instructions will flow through the pipeline: A

.

without Forwarding? B

.

With Forwarding?

Calculate CPI in both cases?

Assume the following initial values

(

in decimal

)

2 = 4,

3 = 6,

4 = 8,

8 = 16,

9 = 18, M [

0] = 20, M [

4] = 40, M [

9] = 90, m [

10] = 10 .

What are the final values for the registers and updates to memory stored data in both cases?

What are the values of the

9 -

Pipeline Control signals during CC

4

and CC

- 10 ?

See slide

- 107

from course material.

.

With No Forwarding

123456789101112131415161718

lw $

2, 0 (

10)

FDEMW

Add $

9,

3,

2

Sub $

2,

2,

9

Sw $

2, 4 (

9)

.

With Forwarding

123456789101112131415161718

lw $

2, 0 (

10)

FDEMW

Add $

9,

3,

2

Sub $

2,

2,

9

Sw $

2, 4 (

9)

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