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RR bb,BCDE
RR bb,JKHL     Rotate Right Through Carry     Rabbit 4000/5000 Instruction

Opcode	Instruction	Operation
--	RR bb,BCDE	{BCDE,CF} = {CF,BCDE}   bb = bb - 1 repeat while bb != 0
DD 78	RR 1,BCDE	repeat the operation 1 time
DD 79	RR 2,BCDE	repeat the operation 2 times
DD 7B	RR 4,BCDE	repeat the operation 4 times
--	RR bb,JKHL	{JKHL,CF} = {CF,JKHL}   bb = bb - 1 repeat while bb != 0
FD 78	RR 1,JKHL	repeat the operation 1 time
FD 79	RR 2,JKHL	repeat the operation 2 times
FD 7B	RR 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 with the C flag the data in BCDE or JKHL.

Figure 10: The bit logic of the RR instruction.

This operation happens bb times.