ARM Architecture - Control Flow Instructions
Which condition can be added to the ARM
B instruction to make it execute only if zero flag is set?Which condition can be added to the ARM B instruction to make it execute only if zero flag is set?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall condition codes for branch
BEQ means branch if equal, which happens when zero flag is set.Step 2: Understand other conditions
BNE means branch if not equal (zero flag clear), BGT and BLT relate to greater/less than.Final Answer:
BEQ -> Option BQuick Check:
Zero flag set = BEQ [OK]
Quick Trick: BEQ branches when zero flag is set [OK]
Common Mistakes:
- Confusing BEQ with BNE
- Using BGT or BLT incorrectly
- Ignoring condition codes
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