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Examples: Given: Register 00H = 0AAH, register 01H = 02H, and register 02H = 17H, C = "0": RLC 00H . Register 00H = 54H, C = "1" RLC @01H . Register 01H = 02H, register 02H = 2EH, C = "0" In the first example, if general register 00H has the value 0AAH (10101010B), the statement "RLC 00H" rotates 0AAH one bit position to the left. The initial value of bit 7 sets the carry flag and the initial value of the C flag replaces bit zero of register 00H, leaving the value 55H (01010101B). The MSB of register 00H resets the carry flag to "1" and sets the overflow flag. dst S3C9442/C9444/F9444/C9452/C9454/F9454 SAM88RCRI INSTRUCTION SET RR — Rotate Right RR dst Operation: C . dst (0) dst (7) . dst (0) dst (n) . dst (n + 1), n = 0–6 The contents of the destination operand are rotated right one bit position. The initial value of bit zero (LSB) is moved to bit 7 (MSB) and also replaces the carry flag (C). C 7 0 Flags: C: Set if the bit rotated from the least significant bit position (bit zero) was "1". Z: Set if the result is "0"; cleared otherwise. S: Set if the result bit 7 is set; cleared otherwise. V: Set if arithmetic overflow occurred, that is 更多：https://www.bmcx.com/ , if the sign of the destination changed during rotation; cleared otherwise. Format: Bytes Cycles Opcode Addr Mode (Hex) dst opc 2 4 E0 R 4 E1 IR Examples: Given: Register 00H = 31H, register 01H = 02H, and register 02H = 17H: RR 00H . Register 00H = 98H, C = "1" RR @01H . Register 01H = 02H, register 02H = 8BH, C = "1" In the first example, if general register 00H contains the value 31H (00110001B), the statement "RR 00H" rotates this value one bit position to the right. The initial value of bit zero is moved to bit 7, leaving the new value 98H (10011000B) in the destination register. The initial bit zero also resets the C flag to "1" and the sign flag and overflow flag are also set to "1". dst SAM88RCRI INSTRUCTION SET S3C9442/C9444/F9444/C9452/C9454/F9454 RRC — Rotate Right Through Carry RRC dst Operation: dst (7) . C C . dst (0) dst (n) . dst (n + 1), n = 0–6 The contents of the destination operand and the carry flag are rotated right one bit position. The initial value of bit zero (LSB) replaces the carry flag; the initial value of the carry flag replaces bit 7 (MSB). C 7 0 Flags: C: Set if the bit rotated from the least significant bit position (bit zero) was "1". Z: Set if the result is "0" cleared otherwise. S: Set if the result bit 7 is set; cleared otherwise. V: Set if arithmetic overflow occurred, that is, if the sign of the destination changed during rotation; cleared otherwise.