Bird
0
0

Given an ARM processor in User mode, an IRQ occurs. Which mode does the processor switch to during exception entry?

medium📝 Analysis Q4 of 15
ARM Architecture - Exception and Interrupt Model
Given an ARM processor in User mode, an IRQ occurs. Which mode does the processor switch to during exception entry?
ASupervisor mode
BIRQ mode
CAbort mode
DUndefined mode
Step-by-Step Solution
Solution:

  1. Step 1: Identify exception type

    IRQ is a hardware interrupt requiring IRQ mode.

  2. Step 2: Determine mode switch

    Processor switches from User mode to IRQ mode to handle interrupt.

  3. Final Answer:

    IRQ mode -> Option B

  4. Quick Check:

    IRQ exception switches to IRQ mode [OK]
Quick Trick: IRQ exception switches processor to IRQ mode [OK]
Common Mistakes:
  • Assuming Supervisor mode for IRQ
  • Confusing Abort mode with IRQ
  • Not switching mode at all

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More ARM Architecture Quizzes
Control Flow Instructions - If-else implementation in assembly - Quiz 6medium Control Flow Instructions - Loop implementation in assembly - Quiz 6medium Exception and Interrupt Model - Vector table structure - Quiz 7medium Exception and Interrupt Model - PendSV and SysTick exceptions - Quiz 6medium Exception and Interrupt Model - Why exceptions handle hardware events - Quiz 6medium Exception and Interrupt Model - Why exceptions handle hardware events - Quiz 10hard Exception and Interrupt Model - Vector table structure - Quiz 12easy Power Modes - Sleep mode (WFI instruction) - Quiz 1easy Power Modes - Wake-up sources - Quiz 3easy Subroutines and Stack - Why subroutines enable modular assembly code - Quiz 4medium