Question: Question 3 (10 marks 1. What is memory mapped I/O? [1 mark] 2. Why DMA is an improvement over CPU programmed I/O? [1 mark] 3.

Question 3 (10 marks 1. What is memory mapped I/O? [1

Question 3 (10 marks 1. What is memory mapped I/O? [1 mark] 2. Why DMA is an improvement over CPU programmed I/O? [1 mark] 3. Mention two advantages and disadvantages for using a single bus as a shared communication link between memory, processor and I/O devices. [2 marks]

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