Analog Devices ADSP-BF53x Blackfin Reference page 472

Instruction Overview
• If
•
R4=0b1111 1111 1111 1111 1111 1111 1111 1111
where this is the background bit field
•
R3=0b0000 0000 1111 1010 0000 1101 0000 1001
where bits 31–16 are the foreground bit field, bits 15–8 are
the position, and bits 7–0 are the length
then the Bit Field Deposit (unsigned) instruction produces:
•
R7=0b1111 1111 1101 1111 0101 1111 1111 1111
Bit Field Deposit Sign-Extended
r7 = deposit (r4, r3) (x) ;
• If
•
R4=0b1111 1111 1111 1111 1111 1111 1111 1111
where this is the background bit field
•
R3=0b0101 1010 0101 1010 0000 0111 0000 0011
where bits 31–16 are the foreground bit field, bits 15–8 are
the position, and bits 7–0 are the length
then the Bit Field Deposit (unsigned) instruction produces:
•
R7=0b0000 0000 0000 0000 0000 0001 0111 1111
13-14 ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* sign-extended*/