Bird
0
0

Which of the following is the correct syntax to disable FIQ interrupts in ARM assembly?

easy📝 Factual Q3 of 15
ARM Architecture - Exception and Interrupt Model
Which of the following is the correct syntax to disable FIQ interrupts in ARM assembly?
ACPSIE f
BCPSID i
CCPSID f
DCPSIE i
Step-by-Step Solution
Solution:

  1. Step 1: Identify instruction to disable interrupts

    CPSID disables interrupts; 'f' specifies FIQ interrupts.

  2. Step 2: Confirm correct syntax for disabling FIQ

    CPSID f disables FIQ interrupts.

  3. Final Answer:

    CPSID f -> Option C

  4. Quick Check:

    CPSID f disables FIQ interrupts [OK]
Quick Trick: CPSID disables; 'f' means FIQ interrupts [OK]
Common Mistakes:
  • Using CPSIE to disable interrupts
  • Mixing 'i' and 'f' flags
  • Incorrect instruction order

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More ARM Architecture Quizzes
Bus Architecture - DMA controller on bus - Quiz 12easy Control Flow Instructions - Branch and link (BL) for subroutines - Quiz 1easy Exception and Interrupt Model - Exception entry and exit sequence - Quiz 1easy Power Modes - Sleep mode (WFI instruction) - Quiz 9hard Power Modes - Sleep mode (WFI instruction) - Quiz 5medium Subroutines and Stack - Why subroutines enable modular assembly code - Quiz 1easy Subroutines and Stack - Subroutine call convention (AAPCS) - Quiz 8hard Subroutines and Stack - Recursive function in assembly - Quiz 14medium Subroutines and Stack - Preserving callee-saved registers - Quiz 6medium Subroutines and Stack - Recursive function in assembly - Quiz 2easy