Real-Time Signal Processor Software Support

Davies, K.; Ris, Fred

doi:10.1147/rd.264.0431

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…These interlocks must be provided in software by arranging the instructions and inserting no-ops (when necessary) to prevent undefined execution sequences. There are currently several architectures that require or explicitly benefit from software imposition of certain types of interlocks [9,16,22]. Any pipelined computer will perform better when the incidence of interlocks is lessened.…”

Section: Introductionmentioning

confidence: 99%

Postpass Code Optimization of Pipeline Constraints

Hennessy

Groß

1983

ACM Trans. Program. Lang. Syst.

226

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Pipeline interlocks are used in a pipelined architecture to prevent the execution of a machine instruction before its operands are available. An alternative to this complex piece of hardware is to rearrange the instructions at compile time to avoid pipeline interlocks. This problem is called code reorganization and is studied here. The basic problem of reorganization of machine-level instructions at compile time is shown to be NP-complete. A heuristic algorithm is proposed, and its properties and effectiveness are explored. Empirical data from MIPS, a VLSI processor design, are given. The impact of code reorganization techniques on the rest of a compiler system is discussed.

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Section: Introductionmentioning

confidence: 99%

Postpass Code Optimization of Pipeline Constraints

Hennessy

Groß

1983

ACM Trans. Program. Lang. Syst.

226

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A Microprocessor for Signal Processing, the RSP

Mintzer

Peled

1982

IBM J. Res. & Dev.

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Signal processing is a data processing domain that contains a diversity of applications, including speech processing, image processing, radar, sonar, medical imaging, data communications, seismic processing, and many others. Despite the diversity of the applications, this processing domain has a very structured set of characteristics. These include real-time operation. dominance of arithmetic operations, and well-structured data flows. The Real-Time Signal Processor (RSP) is a microprocessor architecture that was created to exploit these characteristics in order to provide an expeditious and economical way to implement signal processing applications. In this paper, the organization and architecture ofthe RSP are described. Features of the RSP, such as the instruction pipeline and the fractionalJixed-point arithmetic, which exploit the characteristics of signal processing to provide additional computational power, are emphasized. Other features, such as the powerful indexing, the saturation arithmetic, the guard bits. and the double-word-width accumulator, which add much to the processor's versatility and programmability. are also highlighted. The performance of the RSP is illustrated through examples.

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Rectangular Transforms for Digital Convolution on the Research Signal Processor

Cooley

1982

IBM J. Res. & Dev.

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The Rectangular Transform (RT) method for computing convolutions belongs to a family of Reduced Computational Complexity (RCC) algorithms. Convolution calculations by the RT method were programmed for the Research Signal Processor (RSP) and run on the RSP simulator, giving tabulations of numbers of RSP machine cycles. One of the original objectives was to see how well the original RSP architecture was suited to the RCC algorithms and to be able to make suggestions for possible changes. The results are also intended to demonstrate the efficiency of the RT convolution algorithms on a microprocessor with a limited instruction set and to show how to construct efficient RT programs for digital convolution. All results are given for the original RSP, as it was before the modijcation which resulted in the Real-time Signal Processor described in another paper in this issue [ l ]. @ Copyright 1982 by International Business Machines Corporation. Copying in printed form for private use is permitted without payment of royalty provided that (1) each reproduction is done without alteration and (2) the Journal reference and IBM copyright notice are included on the first page. The title and abstract, but no other portions, of this paper may be copied or distributed royalty free without further permission by computer-based and other information-service systems. Permission to republish any other portion of this paper must be obtained from the editor.

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Real-Time Signal Processor Software Support

Cited by 3 publications

References 6 publications

Postpass Code Optimization of Pipeline Constraints

Postpass Code Optimization of Pipeline Constraints

A Microprocessor for Signal Processing, the RSP

Rectangular Transforms for Digital Convolution on the Research Signal Processor

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