Question: Consider the following datapath and control unit. ( (s2 t0)) ! 23 ! a. What are the operands for the instruction (underlined in red) in

Consider the following datapath and control unit.

( (s2 t0)) !

23 !

a. What are the operands for the instruction (underlined in red) in the (ID stage)? What are the operands and instruction (underlined in red) in the (EX stage)?

Instruction in ID: lw $,($)

Instruction in EX: $,$,$

b. What are the control signals at ID stage (choose the correct ones (either 0 or 1; no x) )?

I

H

G

F

E

D

C

B

A

c. What are the names of the 3 hidden components/signals in the figure?

Component/Signal Names

( )

Data Memory, Instruction Memory, Control Unit, MemWrite, MemRead, RegWrite, Cache Memory, ALU, Register File, MemtoReg

1

2

3

d. What are the sizes of the four pipeline registers in bits?

Pipeline Registers Sizes

IF/ID

ID/EX

EX/MEM

MEM/WB

Bits

Bits

Bits

Bits

11.5 points

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