Question

What is the difference between the ADD and ADC instructions?

a.

ADD sets the carry flag and ADC clears it

b.

ADD clears the carry flag and ADC sets it

c.

ADD and ADC both set the carry flag

d.

ADD and ADC both clear the carry flag

Posted under Reverse Engineering

Answer: (b).ADD clears the carry flag and ADC sets it Explanation:The ADC instruction is very similar to the standard ADD, with the difference that it also adds the value of the carry flag (CF) to the result.

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Q. What is the difference between the ADD and ADC instructions?

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