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Consider an ARM processor receiving an interrupt. What happens immediately after the exception triggers?

medium📝 Analysis Q13 of 15
ARM Architecture - Exception and Interrupt Model
Consider an ARM processor receiving an interrupt. What happens immediately after the exception triggers?
AThe processor ignores the interrupt and continues execution
BThe processor shuts down to prevent damage
CThe processor saves its current state and jumps to the interrupt handler
DThe processor resets all memory to default values
Step-by-Step Solution
Solution:

  1. Step 1: Understand interrupt handling in ARM

    When an interrupt occurs, the processor must stop current work and handle it.

  2. Step 2: Identify the processor's immediate action

    The processor saves its current state and jumps to the interrupt handler code.

  3. Final Answer:

    The processor saves its current state and jumps to the interrupt handler -> Option C

  4. Quick Check:

    Interrupt triggers state save and jump [OK]
Quick Trick: Interrupts cause state save and jump to handler [OK]
Common Mistakes:
  • Thinking processor shuts down on interrupt
  • Assuming interrupts are ignored
  • Believing memory resets on interrupt

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