Question

True False questions

1.The instruction IDIV CX means that the quotient will be a 16 bit value

2.The MUL instruction sets the Overflow flag if the upper half of the product is equal to zero.

3.The MOV instruction doesn't change any flag

4.The following instructions will set the Carry flag:
mov al,125
sub al, 4

5.After the following multiplication:
mov al, 5
mov bl, 2
imul bl

AH will be 0

Answer 1

Solution

2.The MUL instruction sets the Overflow flag if the upper half of the product is equal to zero

Answer

False

Explanation

The MUL instruction sets the Carry and Overflow flags if the upper half of the product is not equal to zero.

Hence Answer is False

------

3.The MOV instruction doesn't change any flag

Answer

True

Explanation

"MOV" instruction doesn't change any flags it used to preserve the flag values across the execution of a "MOV" instruction

Hence Answer is True

---

1.The instruction IDIV CX means that the quotient will be a 16 bit value

Answer

True

Explanation

for example

mov dx, 0
mov ax, 8003h
mov cx, 100h
div cx
quotient will be AX = 0080h that is 16 bits
remainder DX will be= 0003h

Hence Answer is True

---

Answered first 3 questions

really sorry couldnt able to solve the remaining

all the best