Program Flow Control Instructions - Analog Devices ADSP-21020 Specification Sheet

Analog devices 2/40-bit ieee floating-point dsp microprocessor specification sheet
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COMPUTE AND MOVE OR MODIFY INSTRUCTIONS
1.
compute,
2.
IF condition
compute;
3a.
IF condition
compute,
3b.
IF condition
compute,
3c.
IF condition
compute,
3d.
IF condition
compute,
4a.
IF condition
compute,
4b.
IF condition
compute,
4c.
IF condition
compute,
4d.
IF condition
compute,
5.
IF condition
compute,
6a.
IF condition
shiftimm,
6b.
IF condition
shiftimm,
7.
IF condition
compute,
7.
IF condition
compute,

PROGRAM FLOW CONTROL INSTRUCTIONS

|
8.
IF condition
JUMP
|
CALL
|
CALL
|
9.
IF condition
JUMP
|
CALL
|
CALL
|
11.
IF condition
RTS
|
RTI
|
RTI |
|
12.
LCNTR =
<data16>
|
12.
LCNTR =
ureg
|
13.
LCNTR =
<data16>
|
12.
LCNTR =
ureg
(DB) Delayed branch
(LA) Loop abort (pop loop PC stacks on branch)
REV. C
|
DM(Ia, Mb) = dreg1
|
dreg1 = DM(Ia, Mb)
|
|
DM(Ia, Mb)
= ureg ;
|
|
PM(Ic, Md)
|
|
DM(Mb, Ia)
= ureg ;
|
|
PM(Md, Ic)
|
ureg =
DM(Ia, Mb)
|
PM(Ic, Md)
|
ureg =
DM(Mb, Ia)
|
PM(Md, Ic)
|
|
DM(Ia, <data6>)
|
|
PM(Ic, <data6>)
|
|
DM(<data6>, Ia)
|
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PM(<data6>, Ic)
|
dreg =
DM(Ia, <data6>)
|
PM(Ic, <data6>)
|
dreg =
DM(<data6>, Ia)
|
PM(<data6>, Ic)
ureg1 = ureg2 ;
|
|
DM(Ia, Mb)
= dreg ;
|
|
PM(Ic, Md)
|
|
dreg =
DM(Ia, Mb)
|
|
PM(Ic, Md)
|
MODIFY
(Ia, Mb)
|
MODIFY
(Ic, Md)
| |
<addr24>
|
| |
|
(PC, <reladdr6>)
|
|
|
(PC, <reladdr6>)
| |
|
(Md, Ic)
| |
|
(PC, <reladdr6>)
|
|
|
(PC, <reladdr6>)
|
|
|
(
DB,
) , compute ;
|
|
|
(
LA,
|
|
DB, LA
(
|
|
, DO
<addr24>
|
|
( <PC,
, DO
<reladdr24>)(
|
|
,
DO
<addr24>
|
|
|
(
, DO
(PC, <reladdr24>)
|
|
,
PM(Ic, Md) = dreg2
|
|
dreg2 = PM(Ic, Md)
|
;
|
|
;
|
= dreg ;
= dreg ;
|
;
|
|
;
|
;
|
;
|
(
|
DB
|
) ;
|
|
LA
(
,
|
|
DB, LA
(
|
|
(
DB
) , compute ;
|
|
LA
(
,
|
|
DB, LA
(
|
UNTIL LCE ;
|
UNTIL LCE ;
|
UNTIL termination ;
|
–7–
ADSP-21020
|
;
|

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