Practice Interrupt Service Routine (26.6.2) - Lecture – 34 - Computer Organisation and Architecture

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6 sample questions

Question 1.
What is an interrupt?
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Think about why the CPU would need to stop.
Question 2.
What does ISR stand for?
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What do we call the code executed when an interrupt occurs?
3Question 3.
What is the primary purpose of an interrupt?
- To keep the CPU busy
- To signal the CPU that an I/O operation is complete
- To increase CPU performance
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Think about why I/O devices need to communicate with the CPU.
4Question 4.
True or False: An ISR can be executed while another ISR is running.
- True
- False
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Consider what could happen if multiple ISRs were to run simultaneously.
Question 5.
Given a scenario where multiple interrupts occur during a single ISR execution, discuss how the system should handle these interrupts effectively.
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Consider the implications of processing multiple interrupts simultaneously.
Question 6.
Illustrate a context switching flow diagram during an ISR execution, labeling each step.
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Think about what to include at each stage.

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