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Which of the following correctly describes the format of each entry in the ARM vector table?

easy📝 Conceptual Q3 of 15
ARM Architecture - Exception and Interrupt Model
Which of the following correctly describes the format of each entry in the ARM vector table?
AA 32-bit address pointing to an exception handler
BA 16-bit instruction code
CA 64-bit data value
DA 32-bit data value unrelated to addresses
Step-by-Step Solution
Solution:

  1. Step 1: Identify entry size and content

    Each vector table entry is a 32-bit word holding an address to an exception or interrupt handler.

  2. Step 2: Exclude incorrect sizes and types

    Entries are not 16-bit instructions or 64-bit data; they specifically store addresses.

  3. Final Answer:

    A 32-bit address pointing to an exception handler -> Option A

  4. Quick Check:

    Entry format = 32-bit handler address [OK]
Quick Trick: Vector entries are 32-bit addresses, not instructions [OK]
Common Mistakes:
  • Confusing vector entries with instructions
  • Assuming entries are 64-bit
  • Thinking entries hold data values

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