📝 I/O Mapped I/O or Isolated I/O in 8085 Microprocessor

Q1. Given N = 03H stored at 2100H and the three bytes 34H, A5H, 00H at addresses 2101H-2103H (LSB at 2101H), after the program finishes, what value will be stored at memory location 2202H?

💡 Difficulty: easy | ✅ Correct: B

Q2. To modify the program so it produces the 1's complement of each byte instead of the 2's complement, which instruction should be replaced?

💡 Difficulty: medium | ✅ Correct: B

Q3. When N = FFH (255 bytes), which of the following problems is most likely to occur because the program does not check the end of memory space?

💡 Difficulty: hard | ✅ Correct: A