Apple II manual Example, Load Indirect, Store Indirect, Load DOUBLE-BYTE Indirect

EXAMPLE:
25	LD	R5	;Copy the contents
36	ST	R6	;of R5 to R6
LOAD INDIRECT:
LD @Rn			[ 4n ]

The low-order ACC byte is loaded from the memory location whose address resides in Rn and the high-order ACC byte is cleared. Branch conditions reflect the final ACC contents which will always be positive and never minus 1. The carry is cleared. After the transfer, Rn is incremented by 1.

EXAMPLE

15	34 A0	SET	R5	$A034
45		LD	@R5	;ACC is loaded from memory
				;location $A034
				;R5 is incr to $A035

STORE INDIRECT:

ST @Rn [ 5n ]

The low-order ACC byte is stored into the memory location whose address resides in Rn. Branch conditions reflect the

2-byte ACC contents. The carry is cleared. After the transfer Rn is incremented by 1.

EXAMPLE:

15	34	A0	SET	R5	$A034	;Load pointers			R5, R6	with
16	22	90	SET	R6	$9022	;$A034 and		$9022
45			LD	@R5		;Move	byte	from $A034		to $9022
56			ST	@R6		;Both	ptrs	are	incremented

LOAD DOUBLE-BYTE INDIRECT:

LDD @Rn [ 6n ]

The low order ACC byte is loaded from memory location whose address resides in Rn, and Rn is then incremented by 1. The high order ACC byte is loaded from the memory location whose address resides in the incremented Rn, and Rn is again incremented by 1. Branch conditions reflect the final ACC contents. The carry is cleared.

EXAMPLE:

15	34 A0	SET	R5	$A034	;The low-order ACC	byte	is loaded
65		LDD	@R6		;from $A034, high-order		from
					;$A035, R5 is incr	to $A036