Motorola DSP56000 manual Memory and Register Data Move Class II Instruction Format

INSTRUCTION DESCRIPTIONS

	X:R		X Memory and Register Data Move				X:R
Class II Instruction Format:
	( . . . . . ) A➞X:ea X0➞A
	( . . . . . ) B➞X:ea X0➞B
Opcode:
23	16	15	8	7	0

0 0 0 0 1 0 0 d 0 0 M M M R R R

INSTRUCTION OPCODE

OPTIONAL EFFECTIVE ADDRESS EXTENSION

Instruction Fields:

ea=6-bit Effective Address=MMMRRR

Effective
Addressing Mode	M M M R R R
(Rn)-Nn	0	0	0	r	r	r
(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	1	r	r	r

where “rrr” refers to an address register R0–R7
	S	D	D
S D	S/L	Sign Ext	Zero	d	MOVE Opcode
X0	no	N/A	N/A	0	A➞X:ea	X0➞A
Y0	no	N/A	N/A	1	B➞X:ea	X0➞B
A	yes	A2	A0
B	yes	B2	B0

Timing: mv oscillator clock cycles

Memory: mv program words

MOTOROLA INSTRUCTION SET DETAILS A - 185