Analog Devices ADSP-BF53x Blackfin Reference page 478

Instruction Overview
• If
•
R4=0b1010 0101 1010 0101 1100 0011 1010 1010
where this is the scene bit field
•
R3=0bxxxx xxxx xxxx xxxx 0000 1101 0000 1001
where bits bits 15–8 are the position, and bits 7–0 are the
length
Then the Bit Field Extraction (sign-extended) instruction
produces:
•
R7=0b1111 1111 1111 1111 1111 1111 0010 1110
Also See
DEPOSIT
Special Applications
Video image pattern recognition and separation algorithms
13-20 ADSP-BF53x/BF56x Blackfin Processor Programming Reference