Which of the following statements is INCORRECT about "ADD B" instruction of…
2022
Which of the following statements is INCORRECT about "ADD B" instruction of the 8085?
- A.
It is used to add the content of register B to Accumulator.
- B.
Its code in hexa-decimal is 80H.
- C.
Its operand is B whose code is 101.
- D.
It uses the "register" addressing mode.
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Correct answer: C
The ADD B instruction adds the contents of Register B to the Accumulator using opcode 80H. Option C is factually incorrect because Register B's internal code is 000, not 101. Since the question asks for the incorrect statement, Option C is the correct selection.