Practice Connecting Dma Controller (29.1.5) - Overview of DMA and Interrupt Driven I/O

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6 sample questions

Question 1.
What is DMA?
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Think about how data is transferred in computers.
Question 2.
What is the main advantage of DMA over interrupt-driven I/O?
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Consider the context switching.
3Question 3.
What is the primary function of DMA?
- To manage CPU processes
- To transfer data directly between I/O devices and memory
- To replace CPU completely
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Think about what DMA does with data.
4Question 4.
In Cycle Stealing Mode, how does DMA affect CPU access to the bus?
- True
- False
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Remember how access is shared.
Question 5.
Design a DMA controller for a new I/O device that needs to handle high-speed data inputs. What features and specifications must be included?
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Focus on what high-speed input requires.
Question 6.
Calculate the total time required for a 10 MB file transfer using DMA in Burst Mode, where one transfer takes 0.05 seconds. How many total transfers are required?
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Think about how data is segmented in transfers.

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