RL DE     Rotate Left Through Carry     Rabbit 2000/3000/4000 Instruction

Opcode	Instruction	Clocks	Operation
F3	RL DE	2	{CF,DE} = {DE,CF}

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

Description

Rotates DE to the left with the C flag. Each bit in the register moves to the next highest-order bit position (bit 0 moves to bit 1, etc.) while the C flag moves to bit 0 and bit 15 moves to the C flag. See Figure 1 for an illustration.