Appeal No. 2006-1450
Application No. 09/933,786
Invention
Appellant’s invention relates generally to a shift
processing unit (figure 3) for processing an incoming data
stream. The shift processing unit includes an N-bit barrel
shifter (320) coupled to a shift post processor (340) and a shift
carry register (330). The N-bit barrel shifter (320) shifts an
incoming operand (315) according to an offset parameter to
thereby generate a shifted operand. The shift carry register
(330), in turn, transforms the shifted operand into a shift carry
operand, which it transfers to the shift post processor (340) to
then store both the shifted operand and the shift carry operand
in memory. The shift post processor (340) then processes the
shifted operand to generate an output based on at least a control
signal and a mask field. The shift post processor (340) includes
a decoder (710) that it uses to decode the offset parameter into
the mask field, wherein the mask field includes a plurality of
bits, each mask bit corresponding to a bit position of the
shifted operand.
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007