Practice 8259a Interrupt Controller (27.4.1) - Interrupts and Processor Management
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8259A Interrupt Controller

Practice - 8259A Interrupt Controller

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Practice Questions

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Question 1 Easy

What is the function of the 8259A interrupt controller?

💡 Hint: Think about what happens when multiple devices signal the CPU at once.

Question 2 Easy

What does the interrupt enable flag do?

💡 Hint: Consider what happens when this flag is set to disable.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the interrupt enable flag do?

Allows CPU to ignore interrupts
Prevents CPU from accepting interrupts
Allows CPU to accept interrupts

💡 Hint: Think about what happens when you set a flag to 'enable'.

Question 2

True or False: The 8259A can handle only one interrupt at a time.

True
False

💡 Hint: Consider how many devices can signal the CPU simultaneously.

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Challenge Problems

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Challenge 1 Hard

Describe a scenario where multiple devices generate interrupts at the same time. How would the 8259A prioritize these interrupts?

💡 Hint: Consider the importance of the tasks each device is performing.

Challenge 2 Hard

Outline the consequences of improperly handling the enable and disable interrupt flags in a critical system.

💡 Hint: Reflect on systems where timing is critical, like air traffic control.

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