Instructions for performing an operation on two operands and subsequently store the original value of the operating

摘要

Instructions for performing an operation on two operating and subsequently store the original value of the operating.An instruction arithmetic / logic is executed with operands of interconnected memory when executed obtains a second operand from a location in memory, and saves a temporary copy of the second operand, the implementation performs an arithmetic or logic operation based on n The second operand, and a third operand and stores the result in a memory location of the second operand, and.Subsequently, stores the temporary copy in a first register.