Practice Functionality Of Memory-mapped I/o (25.4.1)

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6 sample questions

Question 1.
What does memory-mapped I/O mean?
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Think about how the CPU communicates with devices.
Question 2.
What is polling in the context of I/O?
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What does the CPU do to know if a device is ready?
3Question 3.
What technique uses the same address space for memory and I/O?
- Memory-Mapped I/O
- Isolated I/O
- Direct Memory Access
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Recall the major types of I/O operations.
4Question 4.
True or False: Polling is an efficient way for the CPU to handle I/O devices.
- True
- False
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Consider the CPU's resource usage while polling.
Question 5.
Design a simple series of control commands required to interface a temperature sensor with the CPU using memory-mapped I/O.
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Think about how you would cycle through the operations of asking for the temperature.
Question 6.
Compare and contrast the advantages of memory-mapped I/O over isolated I/O in a specific use case scenario.
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Identify scenarios where speed vs. capacity is prioritized.

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