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2 cards from this section. Quick, good the night before a test.
What is the main advantage of interrupt-driven I/O over programmed I/O?
Think about what happens during the waiting period.
Define an Interrupt Service Routine.
What does it do when an interrupt occurs?
What is a primary benefit of interrupt-driven I/O?
Consider how the CPU behaves during I/O operations.
True or False: The Program Status Word needs to be restored after executing an ISR.
What does PSW include that is essential for execution?
Design a simple CPU model that uses both programmed I/O and interrupt-driven I/O for different tasks. Discuss which scenarios are most appropriate for each method.
Consider the efficiency needed in different contexts.
Discuss the implications of failing to properly restore the CPU context after an interrupt. What are potential real-world effects?
Think about how critical data consistency is.
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