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

INSTRUCTION DESCRIPTIONS

	R:Y		Register and Y Memory Data Move				R:Y
Class II Instruction Format:
( . . . . . ) Y0 ➞ A A ➞ Y:ea
( . . . . . ) Y0 ➞ B B ➞ Y:ea
Opcode:
23	16	15	8	7	0
		0 0 0 0 1	0 0 d	1 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
	SRC	DEST	DEST
S, D	S/L	Sign Ext	Zero	d	MOVE Opcode
X0	no	N/A	N/A	0	Y0 ➞ A	A ➞ Y:ea
Y0	no	N/A	N/A	1	Y0 ➞ B	B ➞ Y:ea
A	yes	A2	A0
B	yes	B2	B0

Timing: mv oscillator clock cycles

Memory: mv program words

MOTOROLA INSTRUCTION SET DETAILS A - 197