Basic Instructions

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Answer the following questions:

a. For each part of this problem, assume the “before” values when the given instruction is executed. Give the requested “after” values.

Before Instruction After
1. EBX: 00 00 01 A2 mov eax, 100 EAX

b. For each part of this problem, assume the “before” values when the given instruction is executed. Give the requested “after” values.

Before Instruction After
DX: 01 4B add dx, 40h DX, SF, ZF, CF, OF

c. For each part of this problem, assume the “before” values when the given instruction is executed. Give the requested “after” values.

Before Instruction After

EBX: FF FF FF 75

ECX: 00 00 01 A2

sub ebx, ecx EBX, ECX, SF, ZF, CF, OF

d. For each part of this problem, assume the “before” values when the given instruction is executed. Give the requested “after” values.

Before Instruction After

EAX: FF FF FF E4

EBX: 00 00 00 02

mul ebx EAX, EDX, CF, OF

e. For each part of this problem, assume the “before” values when the given instruction is executed. Give the requested “after” values.

Before Instruction After

AX: FF 75

byte at count: FC

div count AX

 

 

Assignment is also attached in file.

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