Describe the three data transfer modes (1) programmed I/o (2)
interrupt initiated i/o (3) DMA
Why does DMA have priority over the cpu when both request a memory transfer?
What do you mean by fault tolerance ?
What are MTTF and MTTR?
Why do we need DMA ? Draw the typical block diagram of a DMA
controller and explain how it is used for direct data transfer between
memory and peripherals???
Tuesday 4 March 2014
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