In this paper we present algorithms for incrementally routing circuits mapped to field-programmable gate arrays (FPGAs). the algorithms work well for ripping up and rerouting nets connected to small numbers of displac...
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In this paper we present algorithms for incrementally routing circuits mapped to field-programmable gate arrays (FPGAs). the algorithms work well for ripping up and rerouting nets connected to small numbers of displaced logic blocks. Additionally the algorithms are sequential and compact, therefore making them ideal for embedding in hardware. Given an FPGA with a readable as well as writable configuration memory, these algorithms require no prior knowledge of the mapped circuit's netlist. Experimental results indicate our router works well for fault tolerance and other applications.
In this paper we'll make a short review, of the evolution of reconfigurable devices and their role inside reconfigurable systems, that we'll use to introduce an new emerging field: reconfigurable computing. We...
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In this paper we'll make a short review, of the evolution of reconfigurable devices and their role inside reconfigurable systems, that we'll use to introduce an new emerging field: reconfigurable computing. We'll give the clues to understand its possibilities, as well as the applicationsthat better suit to this techniques and systems in the midway between pure hardware and software solutions.
this paper describes how to implement a partially connected neural network by a Giga-Ops Spectrum G800 FPGA (fieldprogrammable gate arrays)-based custom computer which consists of up to 32 Xilinx XC4010 logic chips. ...
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this paper describes how to implement a partially connected neural network by a Giga-Ops Spectrum G800 FPGA (fieldprogrammable gate arrays)-based custom computer which consists of up to 32 Xilinx XC4010 logic chips. From the training data, a decision tree is generated by the classifier program C4.5. the tree is then used to initialise the neural network to a nearly optimum configuration. this initialised partially connected neural network is then trained by training data. the trained neural network is then implemented by our custom computer system. this implementation requires fewer connections and can provide a very-high-speed classifier for many real-time image recognition applications.
Picosecond switching speeds and folded current voltage characteristics have made quantum tunneling devices promising alternatives for high-speed a nd compact VLSI circuit design. this paper describes new bistable digi...
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ISBN:
(纸本)0818682248
Picosecond switching speeds and folded current voltage characteristics have made quantum tunneling devices promising alternatives for high-speed a nd compact VLSI circuit design. this paper describes new bistable digital logic circuit topologies that use resonant tunneling diodes (RTDs) in conjunction with heterojunction bipolar transistors (HBTs) and modulation-doped field effect transistors (MODFETs). the designed circuits include a single-gate. self-latching MAJORITY function besides basic NAND, NOR and inverter gates. the application of these circuits in the design of high-performance adders and parallel correlators is discussed. We also review multiple-valued logic (MVL) applications of RTDs that achieve significant compaction in terms of device count over comparable binary logic implementations in conventional technologies. these include a four-valued 4:1 multiplexer using 13 resonant tunneling bipolar transistors (RTBTs) and HBTs, a mask programmable four-valued, single-input gate using 4 RTDs and 14 HBTs, and a four-step countdown circuit using 1 RTD and 3 HBTs.
the proceedings contain 51 papers. the special focus in this conference is on Devices and Architectures. the topics include: Multicontext dynamic reconfiguration and real time probing on a novel mixed signal programma...
ISBN:
(纸本)3540634657
the proceedings contain 51 papers. the special focus in this conference is on Devices and Architectures. the topics include: Multicontext dynamic reconfiguration and real time probing on a novel mixed signal programmable device with on-chip microprocessor;CAD-oriented FPGA and dedicated CAD system for telecommunications;a three dimensional FPGA architecture, its fabrication, and design tools;extending dynamic circuit switching to meet the challenges of new FPGA architectures;performance evaluation of a full speed PCI initiator and target subsystem using FPGAs;implementation of pipelined multipliers on xilinx FPGAs;the XC6200DS development system;thermal monitoring on FPGAs using ring-oscillators;a reconfigurable approach to low cost media processing;a flexible platform for codesign and dynamic reconfigurable computing research;stream synthesis for a wormhole run-time reconfigurable platform;pipeline morphing and virtual pipelines;parallel graph colouring using FPGAs;run-time compaction of FPGA designs;partial reconfiguration of FPGA mapped designs withapplications to fault tolerance and yield enhancement;a case study of partially evaluated hardware circuits;run-time parameterised circuits for the xilinx XC6200;automatic identification of swappable logic units in XC6200 circuitry;towards an expert system for a priori estimation of reconfiguration latency in dynamically reconfigurable logic;exploiting reconfigurability through domain-specific systems;technology mapping by binate covering;a new packing, placement and routing tool for FPGA research;technology mapping of heterogeneous LUT-based FPGAs and technology-driven FSM partitioning for synthesis of large sequential circuits targeting lookup-table based FPGAs.
New techniques have been developed for the technology mapping of FPGAs containing more than one size of look-up table. the Xilinx 4000 series is one such family of devices. these have a very large share of the FPGA ma...
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Functional decomposition has undergone intensive study in recent literature and gained great success in technology mapping for lookup-table based FPGAs. Yet none has ever attempted at extending such success to other a...
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ISBN:
(纸本)0780342836
Functional decomposition has undergone intensive study in recent literature and gained great success in technology mapping for lookup-table based FPGAs. Yet none has ever attempted at extending such success to other applications. In this work, we move one step further by choosing the multiplexer based FPGAs as the new test bed. Using a typical algorithmic framework and the benchmark test set, we show that functional decomposition can be easily adapted to reduce the logic depth of the mapped network without incurring massive area penalty.
the proceedings contain 50 papers. the special focus in this conference is on High-level Design I, New Software and Hardware Development Tools. the topics include: Portable pipeline synthesis for FCCMs;a framework for...
ISBN:
(纸本)9783540617303
the proceedings contain 50 papers. the special focus in this conference is on High-level Design I, New Software and Hardware Development Tools. the topics include: Portable pipeline synthesis for FCCMs;a framework for developing parametrised FPGA libraries;co-evaluation environment for FPGA architecture and CAD system;an universal CLA adder generator for SRAM-based FPGAs;a data driven computer on a virtual hardware;custom computing machines vs. hardware/software codesign;reconfigurable and adaptive computing environment;computing 2-D DFTs using FPGAs;computer aided prototyping partitioning for Xilinx FPGAs, a hierarchical partitioning tool for rapid prototyping;architectural synthesis and efficient circuit implementation for fieldprogrammable gate arrays;reconfigurable pipelined datapath;solving satisfiability problems on FPGAs;FPGA implementation of the block-matching algorithm for motion estimation in image coding;parallel CRC computation in FPGAs;coherent demodulation with FPGAs;the trianus system and its application to custom computing;flexible codesign target architecture for early prototyping of CMIST systems;a reconfigurable multiprocessor testbed;a slow motion engine for the analysis of FPGA-based prototypes;implementing reconfigurable datapaths in FPGAs for adaptive filter design;a fast constant coefficient multiplier for the XC6200;key issues for user acceptance of FPGA design tools;reconfigurable DSP demonstrators for the development of spacecraft payload processors;reconfigurable logic based fibre channel network card with sub 2 micro-second raw latency;an instruction-level custom-configurable processor;architectural synthesis techniques for dynamically reconfigurable logic and fast reconfigurable crossbar switching in FPGAs.
there is hardly a field in the EDA community where latest research activities and real use of tools is so divergent as in the case of synthesis for FPGAs. Latest research work for FPGA synthesis and also available too...
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this paper describes a function-level Evolvable Hardware (EHW). EHW is hardware which is built on programmablelogic devices (e.g. PLD and FPGA) and whose architecture can be reconfigured by using a genetic learning t...
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