Motorola 24-Bit Digital Signal Processor, DSP56000 manual Special Addressing Absolute Short Address

INSTRUCTION GROUPS

EXAMPLE A: MOVE P: $3200,X0

		BEFORE EXECUTION
		X1			X0
	47	24 23			0
			000 0 0 1	X X X X X X
23		0 23			0
				P MEMORY
		23			0
		$3204
				X X	X X X X

$3200 $ A 5 B 4 C 6

EXAMPLE B: MOVE A1, X: $3
			BEFORE EXECUTION
	A2		A1		A0
55	48 47		24 23		0
X X		3 4 F 5 E 6		X X X X X X
7	0	23	0	23	0
				X MEMORY
				23	0
			$0040
			$003F

$0003 X X X X X X

$0000

Assembler Syntax: aa

Memory Spaces: P:, X:, Y:, L:

Additional Instruction Execution Time (Clocks): 0

Additional Effective Address Words: 0

		AFTER EXECUTION
		X1		X0
	47	24 23			0
	0 0 0 0 0 1		A 5 B 4 C 6
23		0 23		0
			P MEMORY
		23		0
		$3204
			X X	X X X X

$3200 $ A 5 B 4 C 6

				AFTER EXECUTION
		A2		A1				A0
	55	48 47		24 23				0
	X X		3 4 F 5 E 6				X X X X X X
7	0	23	0		23		0
							X MEMORY
						23		0
				$0040
					$003F
	ABSOLUTE
	SHORT
ADDRESSIN-				$0003
	GRANGE					3 4		F 5 E 6
				$0000

Figure 6-11 Special Addressing – Absolute Short Address

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