Practice Priority Assignment (27.3) - Interrupts and Processor Management

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11 questions

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6 sample questions

Question 1.
What is an interrupt?
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Think about what happens in real-time operating systems.
Question 2.
What does the interrupt enable flag do?
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Consider the implications of turning this flag on or off.
3Question 3.
What does the interrupt enable flag do?
- Allows the processor to respond to interrupts
- Prevents processor interruptions
- Resets all flags
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Think about its basic function.
4Question 4.
True or False: The program status word is solely managed by the CPU without programmer intervention.
- True
- False
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Consider who controls the flags.
Question 5.
Design a pseudo-code for an interrupt service routine that correctly enables and disables interrupts based on a critical task.
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What are the essential steps an ISR must always take?
Question 6.
Discuss the potential risks involved if a programmer forgets to enable interrupts after handling an ISR.
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Consider what could happen in real-time applications.

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