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RRC bb,BCDE
RRC bb,JKHL     Rotate Right Affect Carry     Rabbit 4000/5000 Instruction

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

Clocks	8-Bit Access	16-Bit Unaligned	16-Bit Aligned
Rabbit 4000	4	n/a	n/a
Rabbit 5000	4	4	2

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 bb number of times.