What are the Logical Instructions is ARM? All Questions › Category: Embedded System › What are the Logical Instructions is ARM? 0 Vote Up Vote Down Chetan Shidling Staff asked 5 years ago I need short information. 1 Answers 0 Vote Up Vote Down Chetan Shidling Staff answered 5 years ago Logical Instructions perform bitwise logical operations on the two source registers. The logical instructions update the CPSR flags only if the S suffix is present. These instructions can use barrel-shifted second operands in the same way as the arithmetic instructions.