A. Add the necessary forwarding paths for the following instructions in the datapath shown here. A 1 add R3, R3, R4 2 sub R4, R2, R3 3 add R4, R5, R5 LO-B! PC Address >Add Instruction memory IFAD Road register 1 Read register Registers Road data 2 Write register Write data Read data 1 16 Sign- extend ID/EX Shift left 2 Adg Add result Zero ALU ALU result EX/MEM Address Write data Data memory Read data MEM/WB

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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A. Add the necessary forwarding paths for the following instructions in the
datapath shown here.
A
1 add R3, R3, R4
2 sub
R4, R2, R3
3 add R4, R5, R5
1
PC
Address
>Add
Instruction
memory
IF/ID
Read
register 1
Read
register 2
Write
register
Write
data
Read
data 1
Registers Road
data 2
16
Sign-
extend
32
ID/EX
Shift
left 2
Add Add
result
Zero
ALU ALU
result
EX/MEM
Address
Write
data
Data
memory
Read
data
MEM/WB
Transcribed Image Text:A. Add the necessary forwarding paths for the following instructions in the datapath shown here. A 1 add R3, R3, R4 2 sub R4, R2, R3 3 add R4, R5, R5 1 PC Address >Add Instruction memory IF/ID Read register 1 Read register 2 Write register Write data Read data 1 Registers Road data 2 16 Sign- extend 32 ID/EX Shift left 2 Add Add result Zero ALU ALU result EX/MEM Address Write data Data memory Read data MEM/WB
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