[Solved] In ARM architecture, what typically triggers a bus fault exception? — Ans: An attempt to access an invalid or non-existent memory address | ARM Architecture

ARM Architecture - Bus Architecture

In ARM architecture, what typically triggers a bus fault exception?

AA division by zero operation

BAn attempt to access an invalid or non-existent memory address

CA software interrupt request

DA successful memory read operation

Step-by-Step Solution

Solution:

Step 1: Understand bus fault causes
A bus fault occurs when the processor tries to access memory that is invalid or not mapped.
Step 2: Eliminate other options
Division by zero triggers a usage fault, software interrupt triggers an SVC, and successful reads do not cause faults.
Final Answer:
An attempt to access an invalid or non-existent memory address -> Option B
Quick Check:
Bus fault = invalid memory access [OK]

Quick Trick: Bus fault = invalid memory access attempt [OK]

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In ARM architecture, what typically triggers a bus fault exception?