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πŸ“ Timing Diagram of LXI rp, dbyte of 8085 Microprocessor

πŸ“– From An Introduction To Microprocessor 8085 β€’ 5. The 8085 Microprocessor β€’ 8 questions available

Practice MCQs for Timing Diagram of LXI rp, dbyte of 8085 Microprocessor. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

πŸ”„ Last updated: 2026-07-30

1
Easy Questions
4
Medium Questions
3
Hard Questions

πŸ“ Sample Questions

Q1. What 8‑bit opcode is used for the LXI instruction that loads the H‑L register pair with a 16‑bit immediate value?

πŸ”Ή A. 33
πŸ”Ή B. 49
πŸ”Ή C. 1
πŸ”Ή D. 17

πŸ’‘ Difficulty: easy | βœ… Correct: A

Q2. How does the Zero flag behave after executing an LXI instruction that loads the accumulator with the value 0x00?

πŸ”Ή A. Set to 1
πŸ”Ή B. Reset to 0
πŸ”Ή C. Toggles
πŸ”Ή D. Unaffected

πŸ’‘ Difficulty: medium | βœ… Correct: A

Q3. In the timing diagram of an LXI H‑L instruction, which bus line changes during the first T‑state of the fetch cycle?

πŸ”Ή A. Address bus
πŸ”Ή B. Data bus
πŸ”Ή C. Control bus (/WR)
πŸ”Ή D. No line changes

πŸ’‘ Difficulty: hard | βœ… Correct: A

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πŸ”— Related Topics

πŸ“ Architecture of 8085 MicroprocessorπŸ“ Register Section of 8085 MicroprocessorπŸ“ Address Buffer and Address Data Buffer of 8085 MicroprocessorπŸ“ Arithmetic and Logical Unit (ALU) of 8085 MicroprocessorπŸ“ Timing and Control Unit of 8085 Microprocessor
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