Question: (6 Marks) Question 4. Early computers did not have Direct Memory Access (DMA); the CPU handled every byte of data read or written. (a) Briefly

(6 Marks) Question 4. Early computers did not have Direct Memory

(6 Marks) Question 4. Early computers did not have Direct Memory Access (DMA); the CPU handled every byte of data read or written. (a) Briefly describe the mechanism by which these early computers handled non-DMA read operations. (b) What impact did the lack of DMA have on multiprogramming? Use diagrams if you feel they make your answers clearer

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