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DEC (IX+d)
DEC (IY+d)     Decrement     Rabbit 2000/3000/4000/5000 Instruction

Opcode	Instruction	Operation
DD 35 d	DEC (IX+D)	(IX+d) = (IX+d) - 1
FD 35 d	DEC (IY+D)	(IY+d) = (IY+d) - 1

Clocks	8-Bit Access	16-Bit Unaligned	16-Bit Aligned
Rabbit 2000/3000/4000	12	n/a	n/a
Rabbit 5000	13	12	11

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

Description

Decrements the byte whose address is:

• the sum of IX and the 8-bit signed displacement value d, or

• the sum of IY and the 8-bit signed displacement value d.