Motorola 24-Bit Digital Signal Processor manual Long Memory Data Move Instruction Format, Opcode

INSTRUCTION DESCRIPTIONS

L: Long Memory Data Move L:

Instruction Format:

( . . . . . ) L:ea,D

( . . . . . ) S,L:ea

Opcode:

23			16	15		8	7	0
	0	1 0 0 L 0 L	L		W 1 M	M M R R R		INSTRUCTION OPCODE

OPTIONAL EFFECTIVE ADDRESS EXTENSION

Instruction Fields:

ea=6-bit Effective Address=MMMRRR

		Effective
Register W		Addressing Mode	M	M M R R				R
Read S	0	(Rn)-Nn	0	0	0	r	r	r
Write D	1	(Rn)+Nn	0	0	1	r	r	r
		(Rn)-	0	1	0	r	r	r
		(Rn)+	0	1	1	r	r	r
		(Rn)	1	0	0	r	r	r
		(Rn+Nn)	1	0	1	r	r	r
		-(Rn)	1	1	0	r	r	r
		Absolute address	1	1	0	0	0	0
where “rrr” refers to an address register R0–R7

			S				D	D
S	S1	S2	S/L	D	D1	D2	Sign Ext	Zero	L L L
A10	A1	A0	no	A10 A1		A0	no	no	0	0	0
B10	B1	B0	no	B10	B1	B0	no	no	0	0	1
X	X1	X0	no	X	X1	X0	no	no	0	1	0
Y	Y1	Y0	no	Y	Y1	Y0	no	no	0	1	1
A	A1	A0	yes	A	A1	A0	A2	no	1	0	0
B	B1	B0	yes	B	B1	B0	B2	no	1	0	1
AB	A	B	yes	AB	A	B	A2,B2	A0,B0	1	1	0
BA	B	A	yes	BA	B	A	B2,A2	B0,A0	1	1	1

Timing: mv oscillator clock cycles

Memory: mv program words

A - 200 INSTRUCTION SET DETAILS MOTOROLA