Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN

HANEL

ROTATE INSTRUCTIONAND DATA

SERIALIZATIONRotating Right

and Left(cont’)

RL A ;rotate left A‰In rotate left

¾The 8 bits of the accumulator are rotated left one bit, and ¾Bit D7 exits from the MSB and enters into LSB, D0

MSB LSB

MOV A,#72H ;A = 0111 0010RL A

;A = 1110 0100

RL A

;A = 1100 1001