Analog Devices ADSP-BF53x Blackfin Reference page 458

Instruction Overview
Parallel Issue
This instruction can be issued in parallel with specific other 16-bit
instructions. For details, see
Example
r0.l = cc = bxorshift (a0, r1) ;
r0.l = cc = bxor (a0, r1) ;
r0.l = cc = bxor (a0, a1, cc) ;
a0 = bxorshift (a0, a1, cc) ;
Also See
None
Special Applications
Linear feedback shift registers (
als and are often used to implement cyclical encoders and decoders.
s use the set of Bit-Wise XOR instructions to compute bit XOR
LFSR
reduction from a state masked by a polynomial.
12-16 ADSP-BF53x/BF56x Blackfin Processor Programming Reference
"Issuing Parallel Instructions" on page
s) can multiply and divide polynomi-
LFSR
20-1.