barrel shifter


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barrel shifter

(hardware)
A hardware device that can shift or rotate a data word by any number of bits in a single operation. It is implemented like a multiplexor, each output can be connected to any input depending on the shift distance.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
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3 consists of a barrel shifter to store even multiple values.
The reset output will be set, when the input combination X =10000 to make the output of the barrel shifter to 0
For floating point calculation, which deals with large numbers, single level array barrel shifter design is not appropriate, because the large number of connections and resulting large electrical load make an undesirable solution [36].
A bidirectional logarithmic logical shifter is a non-rotating barrel shifter which can shift input data to left or right.
* Barrel Shifter Unit provides additional shift by bits operations;
Evaluation of Microblaze with supplemental core units Computing time, s Microblaze with supplemental core units Brute Force Ant System Only core 54.0 57.0 Basic FPU 53.0 33.4 Extended FPU 53.0 -- 32 bits Multiplier 53.5 43.0 64 bits Multiplier -- -- Barrel Shifter -- -- Integer Divider 54.0 57.0 Machine Status Register 54.0 57.0 Pattern Compare 54.0 57.0 Basic FPU with 32 bits Multiplier 52.0 23.0
A 16-bit specialized ALU, augmented, by a 16-bit barrel shifter, is used to perform most arithmetic, logical, and control operations.
The ALU and barrel shifter (as well as most other functional blocks) communicate with a multiport 16-word x 16-bit register file and a 512-word x 16-bit data RAM.
SwetaKhatri and GhanshyamJangid (2014) proposed a 64- bit fast VM using barrel shifter based on Nikhilam sutra ([2.sup.nd] sutra of Vedic Mathematics).
FPGA Implementation of 64-bit fast multiplier using barrel shifter. International Journal for Research in Applied Science and Engineering Technology, 2(VII): 344-348.