📝 Input Control Signals in Mode 1 for 8255A

Q1. What does ALE stand for in the 8085 microprocessor?

💡 Difficulty: easy | ✅ Correct: A

Q2. How does the IO/M control signal differentiate between a memory access and an I/O port access?

💡 Difficulty: medium | ✅ Correct: B

Q3. Multiple 8‑bit I/O devices share the data bus. Which signal ensures that only the device with the matching address responds?

💡 Difficulty: hard | ✅ Correct: D