Explain the steps that happen when a peripheral want to take part in an I/O transaction....
Explain the steps that happen when a peripheral want to take part in an I/O transaction. Use the figure that illustrates the operation of a system using Direct Memory Access as I/O strategy
Homework Answers
Initially when peripheral device want to perform some read or write operation to/ from memory.
To carry out this operation the address bus, data bus and control bus is needed which is connected between CPU and memory.
1. Peripheral requests DMA controller that it needs a I/O transaction.
2. DMA controller requests the CPU that it needs address bus, data bus and control bus to carry out transaction.
3. CPU accepts the request of DMA controller sends acknowledgement release the buses to DMA controller to access the required data from memory.
4.DMA controller acknowledge the peripheral and performs the data transmission between peripheral and RAM.
5 After completion , DMA controller release the bus to CPU.
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Explain the steps that happen when a peripheral want to take
part in an I/O transaction....
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comment on this post right when you see this and I'll try to get it
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