Analog Devices ADSP-BF53x Blackfin Reference page 474

Instruction Overview
EXTRACT
General Form
dest_reg = EXTRACT ( scene_reg, pattern_reg ) (Z)
dest_reg = EXTRACT ( scene_reg, pattern_reg ) (X)
Syntax
Dreg = EXTRACT ( Dreg, Dreg_lo ) (Z) ;
Dreg = EXTRACT ( Dreg, Dreg_lo ) (X) ;
Syntax Terminology
:
Dreg R7–0
:
Dreg_lo R7–0.L
Instruction Length
In the syntax, comment (b) identifies 32-bit instruction length.
Functional Description
The Bit Field Extraction instruction moves only specific bits from the
into the low-order bits of the
scene_reg
the length of the pattern bit field and its position in the scene field.
The input register bit field definitions appear in
13-16 ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* zero-extended (b)*/
/* sign-extended (b)*/
. The user determines
dest_reg
Table 13-2.