Q5Microprocessor and Interfaces
Question
4 marks
Explain the concept of Memory Mapping and I/O Mapping.
Answer
Memory vs I/O space allocation.
Memory Mapped I/O treats I/O devices as memory locations (using 16-bit addresses and STA/LDA). I/O Mapped I/O (Isolated I/O) gives devices an independent 8-bit address space accessed via IN and OUT instructions.