8085 Addressing Modes MCQs

Practice 8085 Addressing Modes MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Microprocessors & Microcontrollers8085 Addressing Modes

Which 8085 addressing mode is used in the instruction MVI A,32H?

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Correct Answer: A. Immediate addressing

Explanation: The operand 32H is included directly in the instruction, so MVI A,32H uses immediate addressing.

Reference: Standard microprocessors and microcontrollers: 8085 addressing modes

Question 2

Microprocessors & Microcontrollers8085 Addressing Modes

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Correct Answer: B. Register

Explanation: Both source and destination operands are CPU registers, so MOV A,B uses register addressing.

Reference: Standard microprocessors and microcontrollers: 8085 addressing modes

Question 3

Microprocessors & Microcontrollers8085 Addressing Modes

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Correct Answer: C. Direct

Explanation: LDA contains the 16-bit memory address of the operand explicitly, so it uses direct addressing.

Reference: Standard microprocessors and microcontrollers: 8085 addressing modes

Question 4

Microprocessors & Microcontrollers8085 Addressing Modes

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Correct Answer: C. HL

Explanation: M denotes the memory location whose 16-bit address is contained in the HL pair.

Reference: Standard microprocessors and microcontrollers: 8085 addressing modes