Nintendo DMG-01 - Game Boy Console Manual page 104

3.3.6. Rotates & Shifts
8. RR n
Description:
Rotate n right through Carry flag.
Use with:
n = A,B,C,D,E,H,L,(HL)
Flags affected:
Z - Set if result is zero.
N - Reset.
H - Reset.
C - Contains old bit 0 data.
Opcodes:
Instruction
RR
RR
RR
RR
RR
RR
RR
RR
Page 104
Parameters
A
B
C
D
E
H
L
(HL)
Game Boy
Opcode Cycles
CB 1F 8
CB 18 8
CB 19 8
CB 1A 8
CB 1B 8
CB 1C 8
CB 1D 8
CB 1E 16
TM
CPU Manual
V 1.01