RRC b,BCDE
RRC b,JKHL     Rotate Right Affect Carry     Rabbit 4000 Instruction

Opcode	Instruction	Clocks	Operation
--	RRC b,BCDE	4 (2,2)	BCDE = {B[7],BCDE[31,1]}   CF = E[0]   b = b - 1 repeat while b != 0
DD 58	RRC 1,BCDE	4 (2,2)	repeat the operation 1 time
DD 59	RRC 2,BCDE	4 (2,2)	repeat the operation 2 times
DD 5B	RRC 4,BCDE	4 (2,2)	repeat the operation 4 times
--	RRC b,JKHL	4 (2,2)	JKHL = {J[7],JKHL[31,1]}   CF = L[0]   b = b - 1 repeat while b !=0
FD 58	RRC 1,JKHL	4 (2,2)	repeat the operation 1 time
FD 59	RRC 2,JKHL	4 (2,2)	repeat the operation 2 times
FD 5B	RRC 4,JKHL	4 (2,2)	repeat the operation 4 times

Flags				ALTD			IOI/IOE
S	Z	L/V	C	F	R	SP	S	D
·	·	L	·	·	·

Description

Rotates to the right the data in BCDE or JKHL. Each bit in the register moves to the next lowest-order bit position (bit 31 moves to bit 30, etc.) while bit 0 moves to both bit 31 and the C flag.

Figure 15: The bit logic of RRC.

This operation happens b number of times.