Motorola 24-Bit Digital Signal Processor, DSP56000 manual Before Execution After Execution X X X

INSTRUCTION FORMATS

EXAMPLE A: IMMEDIATE SHORT INTO A0, A1, A2, B0, B1, B2, Rn, Nn

(MOVE #$FF,A1)

						BEFORE EXECUTION								AFTER EXECUTION
			A2				A1	A0				A2		A1		A0
	55		48 47			24 23			0		55	48 47		24 23		0
		X X			X X X X X X			X X X X X X			X X		0 0 0 0 F F		X X X X X X
	7		0	23		0		23	0	7	0	23	0	23	0
EXAMPLE B:POSITIVE IMMEDIATE SHORT INTO X0, X1, Y0, Y1, A, B
							(MOVE #$1F, Y1)
			BEFORE EXECUTION											AFTER EXECUTION
				Y1			Y0							Y1		Y0
		47				24 23		0					47	24 23		0
		X X X X X X					X X X X X X						1 F 0 0 0 0		X X X X X X
	23					0 23		0					23	0 23		0
EXAMPLE C: POSITIVE IMMEDIATE SHORT INTO X, Y, A, B
							(MOVE #$1F, A)
						BEFORE EXECUTION								AFTER EXECUTION
			A2				A1	A0
												A2		A1		A0
	55		48 47			24 23			0		55	48 47		24 23		0
		X X			X X X X X X			X X X X X X		0 0			1 F 0 0 0 0		0 0 0 0 0 0
										7		0	23	0	23	0
	7		0	23		0		23	0

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