This is a MASM Project Assembly Code for x86 Processors ! The code below is supposed to copy whatever's in the source variable into the target variable. However, there is a single error, which will cause it to work correctly if fixed. What is it? .data source WORD 10 DUP("AO") target WORD 10 DUP(?) .code mov esi, OFFSET source add esi, 18 mov edi, OFFSET target add edi, 18 mov ecx, LENGTHOF target std repe movsw   Group of answer choices:    A: 18 should not be added to the ESI and EDI registers   B: ECX should be set to the length of the source, not the target   C: The direction flag should be cleared with CLD, not set with STD   D: The REPE prefix should be replaced with REP

Microsoft Visual C#
7th Edition
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Joyce, Farrell.
Chapter6: Using Arrays
Section: Chapter Questions
Problem 2CP
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This is a MASM Project Assembly Code for x86 Processors !

The code below is supposed to copy whatever's in the source variable into the target variable. However, there is a single error, which will cause it to work correctly if fixed. What is it?

.data
source WORD 10 DUP("AO")
target WORD 10 DUP(?)

.code
mov esi, OFFSET source
add esi, 18
mov edi, OFFSET target
add edi, 18
mov ecx, LENGTHOF target
std
repe movsw
 
Group of answer choices: 
 
A: 18 should not be added to the ESI and EDI registers
 
B: ECX should be set to the length of the source, not the target
 
C: The direction flag should be cleared with CLD, not set with STD
 
D: The REPE prefix should be replaced with REP
The code below is supposed to copy whatever's in the source variable into
the target variable. However, there is a single error, which will cause it to
work correctly if fixed. What is it?
.data
source WORD 10 DUP ("AO")
target WORD 10 DUP (?)
.code
mov esi, OFFSET source
add esi, 18
mov edi, OFFSET target
add edi, 18
mov ecx, LENGTHOF target
std
repe movsw
O 18 should not be added to the ESI and EDI registers
ECX should be set to the length of the source, not the target
The direction flag should be cleared with CLD, not set with STD
The REPE prefix should be replaced with REP
Transcribed Image Text:The code below is supposed to copy whatever's in the source variable into the target variable. However, there is a single error, which will cause it to work correctly if fixed. What is it? .data source WORD 10 DUP ("AO") target WORD 10 DUP (?) .code mov esi, OFFSET source add esi, 18 mov edi, OFFSET target add edi, 18 mov ecx, LENGTHOF target std repe movsw O 18 should not be added to the ESI and EDI registers ECX should be set to the length of the source, not the target The direction flag should be cleared with CLD, not set with STD The REPE prefix should be replaced with REP
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