ADSP21020 AD [Analog Devices], ADSP21020 Datasheet - Page 7

• Manufacturer Part Number: ADSP21020
• Description: 32/40-Bit IEEE Floating-Point DSP Microprocessor
• Manufacturer: AD [Analog Devices]

REV. C
COMPUTE AND MOVE OR MODIFY INSTRUCTIONS
1.
2.
3a.
3b.
3c.
3d.
4a.
4b.
4c.
4d.
5.
6a.
6b.
7.
7.
PROGRAM FLOW CONTROL INSTRUCTIONS
8.
9.
11.
12.
12.
13.
12.
(DB) Delayed branch
(LA) Loop abort (pop loop PC stacks on branch)
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
IF condition
LCNTR =
LCNTR =
LCNTR =
LCNTR =
compute,
compute;
compute,
compute,
compute,
compute,
compute,
compute,
compute,
compute,
compute,
shiftimm,
shiftimm,
compute,
compute,
|
|
|
|
|
|
|
|
|
|
|
|
|
JUMP
CALL
CALL
JUMP
CALL
CALL
RTS
RTI
RTI |
<data16>
ureg
<data16>
ureg
|
|
|
|
| |
| |
| |
| |
|
|
|
|
|
|
|
|
|
|
ureg =
ureg =
|
|
|
|
dreg =
dreg =
ureg1 = ureg2 ;
|
|
dreg =
MODIFY
MODIFY
|
|
(
(
(
, DO
, DO
,
, DO
|
|
|
DM(Ia, Mb) = dreg1
dreg1 = DM(Ia, Mb)
DM(Ia, Mb)
PM(Ic, Md)
DM(Mb, Ia)
PM(Md, Ic)
DM(Ia, <data6>)
PM(Ic, <data6>)
DM(<data6>, Ia)
PM(<data6>, Ic)
DM(Ia, Mb)
PM(Ic, Md)
<addr24>
(PC, <reladdr6>)
(PC, <reladdr6>)
(Md, Ic)
(PC, <reladdr6>)
(PC, <reladdr6>)
DO
DB,
LA,
DB, LA
|
|
|
|
|
|
|
|
|
|
|
|
|
|
DM(Ia, Mb)
PM(Ic, Md)
PM(Ic, Md)
PM(Md, Ic)
DM(Ia, <data6>)
DM(Ia, Mb)
DM(Mb, Ia)
PM(Ic, <data6>)
DM(<data6>, Ia)
PM(<data6>, Ic)
( <PC,
(
<addr24>
<addr24>
|
|
|
|
|
|
(PC, <reladdr24>)
(Ia, Mb)
(Ic, Md)
) , compute ;
|
|
|
|
|
|
<reladdr24>)(
= dreg ;
= ureg ;
= ureg ;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
= dreg ;
= dreg ;
;
;
;
–7–
,
;
|
|
|
|
(
(
(
(
(
(
|
|
|
|
|
|
;
;
DB
LA
DB, LA
DB
LA
DB, LA
|
|
|
|
,
,
UNTIL LCE ;
UNTIL LCE ;
UNTIL termination ;
|
|
PM(Ic, Md) = dreg2
dreg2 = PM(Ic, Md)
|
|
|
|
|
|
) ;
) , compute ;
|
|
;
ADSP-21020