SUB (IX+d)
SUB (IY+d)     Subtract without Carry     Rabbit 2000/3000/4000 Instruction

Opcode	Instruction	Clocks	Operation
DD 96 d	SUB (IX+d)	9 (2,2,2,1,2)	A = A - (IX + d)
FD 96 d	SUB (IY+d)	9 (2,2,2,1,2)	A = A - (IY + d)

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

Description

Subtracts the data whose address is:

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

from A. The result is stored in A.

The Rabbit 4000 assembler views "SUB A,(IX+d)" and "SUB (IX+d)" as equivalent instructions.The same is true for "SUB A,(IY+d)" and "SUB (IY+d)."