Instruction Overview
15-14
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
The instruction supports only biased rounding. The
RND_MOD
bit in the
ASTAT
register has no bearing on the rounding behavior of this instruction.
See
“Saturation” on page 1-17
for a description of saturation behavior.
See
“Rounding and Truncating” on page 1-19
for a description of round-
ing behavior.
Flags Affected
The following flags are affected by this instruction:
•
AZ
is set if result is zero; cleared if nonzero.
•
AN
is set if result is negative; cleared if non-negative.
•
V
is set if result saturates; cleared if no saturation.
•
VS
is set if
V
is set; unaffected otherwise.
All other flags are unaffected.
Required Mode
User & Supervisor
Parallel Issue
This instruction can be issued in parallel with specific other 16-bit
instructions. For details, see
“Issuing Parallel Instructions” on page 20-1
.
Example
r1.l = r6+r7(rnd12) ;
r1.l = r6-r7(rnd12) ;
r1.h = r6+r7(rnd12) ;
r1.h = r6-r7(rnd12) ;
Содержание ADSP-BF53x Blackfin
Страница 38: ...Conventions xxxviii ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 134: ...System Reset and Powerup 3 18 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 324: ...Instruction Overview 7 20 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 486: ...Instruction Overview 13 28 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 512: ...Instruction Overview 14 26 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 604: ...Instruction Overview 15 92 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 688: ...Instruction Overview 18 48 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 742: ...Instruction Overview 19 54 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 752: ...Examples 20 10 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 780: ...Product Identification Register 21 28 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 790: ...ADSP BF535 Flags A 10 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 800: ...Performance Monitor Registers B 10 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 994: ...Instructions Listed By Operation Code C 194 ADSP BF53x BF56x Blackfin Processor Programming Reference...
Страница 1042: ...Index I 40 ADSP BF53x BF56x Blackfin Processor Programming Reference...