ARM Architecture - Exception and Interrupt Model
Which of the following is the correct way ARM exceptions save processor state?
Which of the following is the correct way ARM exceptions save processor state?
easy📝 Factual Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Identify what must be saved during exceptions
The processor must save where it was (program counter) and status to resume later.Step 2: Match the saving method
ARM exceptions save the program counter and status registers to preserve state.Final Answer:
By storing the current program counter and status registers -> Option AQuick Check:
Processor state saved by storing PC and status [OK]
Quick Trick: Exceptions save PC and status to resume later [OK]
Common Mistakes:
- Thinking registers reset to zero during exceptions
- Believing processor speed changes during exceptions
- Assuming exceptions discard current state
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