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RLB A,BCDE
RLB A,JKHL     Rotate Left with A     Rabbit 4000/5000 Instruction

Opcode	Instruction	Operation
DD 6F	RLB A,BCDE	{A,BCDE} = {BCDE,A}
FD 6F	RLB A,JKHL	{A,JKHL} = {JKHL,A}

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
-	-	-	-

Description

Rotates BCDE or JKHL to the left with A. The bits are rotated 8 at a time, as illustrated in the figure below. Bits 0 through 23 are shifted 8 bits to bit positions 8 through 31. Bits 31 through 24 are shifted to A and A is shifted to bits 7 through 0.

Figure 4: The bit logic of the "RLB A, BCDE" instruction