Analog Devices ADSP-BF53x Blackfin Reference page 489

Functional Description
The Add with Shift instruction combines an addition operation with a
one- or two-place logical shift left. Of course, a left shift accomplishes a x2
multiplication on sign-extended numbers. Saturation is not supported.
The Add with Shift instruction does not intrinsically modify values that
are strictly input. However,
result, so
dest_reg
Flags Affected
The D-register versions of this instruction affect flags as follows.
• is set if result is zero; cleared if nonzero.
AZ
• is set if result is negative; cleared if non-negative.
AN
• is set if result overflows; cleared if no overflow.
V
• is set if
VS
• All other flags are unaffected.
The ADSP-BF535 processor has fewer
operate differently than subsequent Blackfin family products. For
more information on the ADSP-BF535 status flags, see
on page
The P-register versions of this instruction do not affect any flags.
Required Mode
User & Supervisor
Parallel Issue
This instruction cannot be issued in parallel with other instructions.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
dest_reg
is intrinsically modified.
is set; unaffected otherwise.
V
A-3.
Shift/Rotate Operations
serves as an input as well as the
flags and some flags
ASTAT
Table A-1
14-3