Analog Devices ADSP-21020 If condition Compute, DMIa, Mb = dreg, PMIc, Md If condition

ADSP-21020

COMPUTE AND MOVE OR MODIFY INSTRUCTIONS
1.		compute,	DM(Ia, Mb) = dreg1,		PM(Ic, Md) = dreg2;
			dreg1 = DM(Ia, Mb)		dreg2 = PM(Ic, Md)
2.	IF condition	compute;
3a.	IF condition	compute,	DM(Ia, Mb)	= ureg ;
			PM(Ic, Md)
3b.	IF condition	compute,	DM(Mb, Ia)	= ureg ;
			PM(Md, Ic)

3c.	IF condition	compute,	ureg = DM(Ia, Mb);
			PM(Ic, Md)
3d.	IF condition	compute,	ureg = DM(Mb, Ia);
			PM(Md, Ic)
4a.	IF condition	compute,	DM(Ia, <data6>)	= dreg ;
			PM(Ic, <data6>)
4b.	IF condition	compute,	DM(<data6>, Ia)	= dreg ;
			PM(<data6>, Ic)
4c.	IF condition	compute,	dreg = DM(Ia, <data6>);
			PM(Ic, <data6>)
4d.	IF condition	compute,	dreg = DM(<data6>, Ia);
			PM(<data6>, Ic)
5.	IF condition	compute,	ureg1 = ureg2 ;
6a.	IF condition	shiftimm,	DM(Ia, Mb)= dreg ;
			PM(Ic, Md)
6b.	IF condition	shiftimm,	dreg = DM(Ia, Mb);
			PM(Ic, Md)
7.	IF condition	compute,	MODIFY (Ia, Mb) ;
			(Ic, Md)

PROGRAM FLOW CONTROL INSTRUCTIONS

8.IF condition

9.IF condition

JUMP	<addr24>
CALL	(PC, <reladdr6>)
JUMP	(Md, Ic)
CALL	(PC, <reladdr6>)

(DB	) ;
LA
DB, LA
(DB	) , compute ;
LA

DB, LA

11.IF condition

RTS	(DB	) , compute ;
RTI	(LA
	DB, LA

12.	LCNTR =	<data16>	, DO	<addr24>
		ureg		(<PC, <reladdr24>)
13.			DO	<addr24>
				(PC, <reladdr24>)

(DB) Delayed branch

(LA) Loop abort (pop loop PC stacks on branch)

UNTIL LCE ;

UNTIL termination ;

REV. C –7–