SUPERSCALAR AND VLIW PROCESSORS



What is a Superscalar Architecture?
• A superscalar architecture is one in which several
instructions can be initiated simultaneously and
executed independently.
• Pipelining allows several instructions to be
executed at the same time, but they have to be in
different pipeline stages at a given moment.
• Superscalar architectures include all features of
pipelining but, in addition, there can be several
instructi ....etc

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Modular VLIW Processor Based on FPGA
Modern FPGA chips, with their larger memory capacity and reconfigurability potential, are opening new frontiers in rapid prototyping of embedded systems. With the coming of high density FPGAs, it is now possible to implement a high performance VLIW processor core on an FPGA. Very Long Instruction Word(VLIW) processors are often used in the embedded systems design domain to obtain high performance. The compilers must provide sufficient level parallelism(ILP) in program code so that the performance ....etc

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Definition
For many signal processing applications programmability and efficiency is desired. With current technology either programmability or efficiency is achievable, not both. Conventionally ASIC's are being used where highly efficient systems are desired. The problem with ASIC is that once programmed it cannot be enhanced or changed, we have to get a new ASIC for each modification. Other option is microprocessor based or dsp based applications. These can provide either programmability or efficiency. Now with stream processors we can achie ....etc

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Abstract
Modern FPGA chips, with their larger memorycapacity and reconfigurability potential, are opening newfrontiers in rapid prototyping of embedded systems. Withthe advent of high density FPGAs it is now possible toimplement a high performance VLIW processor core in anFPGA. Architecture based on Very Long Instruction Word(VLIW) processors are an optimal choice in the attempt toobtain high performance level in embedded system. In VLIWarchitecture ,the effectiveness of these processors dependson the ability of compilers to provide suf ....etc

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Definition
The best way to understand the requirements is to examine typical DSP algorithms and identify how their compositional requirements have influenced the architectures of DSP processor. Let us consider one of the most common processing tasks the finite impulse response filter.

For each tap of the filter a data sample is multiplied by a filter coefficient with result added to a running sum for all of the taps .Hence the main component of the FIR filter is dot product: multiply and add .These options are not unique to the FIR filter a ....etc

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Abstract—
High-definition video applications, such as digital
TV and digital video cameras, require high processing performance
for high-quality visual images in addition to a complex
video CODEC. Pre-/postprocessing to improve video quality
is becoming much more important because requirements for
pre-/postprocessing vary among applications and processing
algorithms have not been stabilized. Therefore, a new processor
architecture that has a highly parallel datapath is needed. In this
paper, we introduce a VLIW vector media c ....etc

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¢ VLIW
ARCHITECTURE
¢ Increasing Processor Performance
Semiconductor Technology
Parallel Processing
Multiprocessors, Multicomputers
Parallelism within the Processor
Pipelining
ILP
¢ ILP (Instruction Level Parallelism)
Parallel Execution of Instructions.
Overlapping of instructions
ILP processors
Superscalar processors
VLIW processors.
¢ Scalar Processors
Fetching and executing an instruction at a time
A program represents a plan of execution.
The ....etc

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Definition

Mobile computing has been the buzzword for quite a long time. Mobile computing devices like laptops, webslates & notebook PCs are becoming common nowadays. The heart of every PC whether a desktop or mobile PC is the microprocessor. Several microprocessors are available in the market for desktop PCs from companies like Intel, AMD, Cyrix etc.The mobile computing market has never had a microprocessor specifically designed for it. The microprocessors used in mobile PCs are optimized versions of the desktop PC microprocessor.

Mobile ....etc

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