Instruction Before After а. MOV CX,25H Cx=0000H CX= b. MOV CL,0 CX=FFFFH CX= с. MOV AX,BҮТE1 AX=1234H AX= d. ADD DL,BYTE DX=0122H DX= e. INC DX DX=FF12H DX= f. INC DL DX=FF23H DX= g. XCHG AL,AH AX=1234H AX= h. SUB CL,CH CX=3451H CX=

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question

For each of the following unrelated instructions, show the result in the destination operand. Indicate if the instruction is invalid. Assume BYTE1 is defined as DB 05.

Instruction
Before
After
a.
MOV CX,25H
СХ-0000н
CX=
b. MOV CL,0
CX=FFFFH
CX=
C.
MOV AX,BYTE1
AX=1234H
AX=
d. ADD DL,BYTE
DX=0122H
DX=
e.
INC DX
DX=FF12H
DX=
f. INC DL
DX=FF23H
DX=
g. XCHG AL,AH
h. SUB CL,CH
AX=1234H
AX=
CX=3451H
CX=
Transcribed Image Text:Instruction Before After a. MOV CX,25H СХ-0000н CX= b. MOV CL,0 CX=FFFFH CX= C. MOV AX,BYTE1 AX=1234H AX= d. ADD DL,BYTE DX=0122H DX= e. INC DX DX=FF12H DX= f. INC DL DX=FF23H DX= g. XCHG AL,AH h. SUB CL,CH AX=1234H AX= CX=3451H CX=
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