Practice Components of a Typical DMA Controller - 29.4.2 | 29. Overview of DMA and Interrupt Driven I/O | Computer Organisation and Architecture - Vol 3
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29.4.2 - Components of a Typical DMA Controller

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define Direct Memory Access (DMA).

💡 Hint: Think about how devices share information with memory.

Question 2

Easy

What is the role of the Data Count Register in a DMA controller?

💡 Hint: Consider what you need to know before you start transferring data.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does DMA stand for?

  • Direct Mode Access
  • Direct Memory Access
  • Dynamic Memory Access

💡 Hint: Focus on the function it describes.

Question 2

True or False: In burst transfer mode, the CPU can perform other tasks while the DMA controller is active.

  • True
  • False

💡 Hint: Think about the prioritization of bus access.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A DMA controller is designed to handle burst transfers of large data-sized 10 MB. If the system has a 32-bit data bus, how many total transfers will be required, and how does this impact the CPU’s operation?

💡 Hint: Consider the byte-to-transfer relationship and divide accordingly.

Question 2

If a system using cycle stealing mode needs to transfer data and the CPU experiences a 10% delay per byte transferred, calculate the total delay for transferring 2000 bytes. What strategies could mitigate this delay?

💡 Hint: Think about how delays accumulate during each cycle's transfer.

Challenge and get performance evaluation