Which of the instructions should be added to the code fragment below to check whether the Left Shift key currently is pressed down? See corresponding keyboard status bits in the picture: Insert ON CapsLock ON NumLock ON 0000:0417 xor mov O mov Select one: O bx, bx es, bx al, es:0417h jz noLShift Choose missing instruction to insert in the code line marked by the comment "MISSING INSTRUCTION". and or xor test and ScrollLock ON Alt Down Ctrl Down LShift Down RShift Down al, 11111101b al, 2 al, 4 al, 00000010b bl, 00000010b ; MISSING INSTRUCTION

Programming Logic & Design Comprehensive
9th Edition
ISBN:9781337669405
Author:FARRELL
Publisher:FARRELL
Chapter5: Looping
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Which of the instructions should be added to the code fragment below to check whether the Left Shift key currently is pressed down?
See corresponding keyboard status bits in the picture:
Insert ON
CapsLock ON
NumLock ON
0000:0417
xor
mov
O
mov
Select one:
bx, bx
es, bx
al, es:0417h
jz
noLShift
Choose missing instruction to insert in the code line marked by the comment "MISSING INSTRUCTION".
and
or
xor
test
and
al, 11111101b
ScrollLock ON
Alt Down
Ctrl Down
al, 2
al, 4
al, 00000010b
bl, 00000010b
LShift Down
RShift Down
; MISSING INSTRUCTION
Transcribed Image Text:Which of the instructions should be added to the code fragment below to check whether the Left Shift key currently is pressed down? See corresponding keyboard status bits in the picture: Insert ON CapsLock ON NumLock ON 0000:0417 xor mov O mov Select one: bx, bx es, bx al, es:0417h jz noLShift Choose missing instruction to insert in the code line marked by the comment "MISSING INSTRUCTION". and or xor test and al, 11111101b ScrollLock ON Alt Down Ctrl Down al, 2 al, 4 al, 00000010b bl, 00000010b LShift Down RShift Down ; MISSING INSTRUCTION
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