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| | FPGAOnline.com : Encyclopedia - VHDL |
 | | VHDL is a textual language designed specifically for describing complex digital electronic hardware. | | | Further tools were developed which enabled VHDL to be simulated meaning that a single language could be used from the initial development, through implementing the design into logic, to verifying that the implementation was as required. | | | An entity and architecture are defined, and a clocked process is used to implement the counter logic. |
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http://www.fpgaonline.com/us/resources/encyclopedia/vhdl.html
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| | VHSIC hardware description language - Wikipedia, the free encyclopedia |
| | VHDL has a syntax that is identical to the Ada with an added superset of constructs added to handle the parallelism inherent in hardware designs. | | | Because of this general-purpose nature, it is possible to use VHDL to write a testbench that verifies the functionality of the design, using files on the host computer to define stimulus, interacts with the user, and compares results with those expected. | | | The next step was the development of logic synthesis tools that read the VHDL, and output a definition of the physical implementation of the circuit. |
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http://en.wikipedia.org/wiki/VHDL
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| | VHDL samples |
| | The VHDL source code is file_io.vhdl This example is a skeleton for a VHDL simulation that needs input from a file, simulates based on the input and produces output to a file. | | | The VHDL source code for the generic serial multiplier is mul_ser_g.vhdl The output of the VHDL simulation is mul_ser_g.out This simulation models a multiplier using "hi" and "lo" registers used in the MIPS architecture and is similar to the Patterson and Hennessey example. | | | The VHDL source code is sqrt8m.vhdl The output of the VHDL simulation is sqrt8m.out The schematic is sqrt8m.jpg This circuit performs the same function on the input as does sqrt8.vhdl above. |
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http://www.csee.umbc.edu/help/VHDL/samples/samples.shtml
(1156 words)
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| | Larry Saunders, Expert VHDL Training and Assistance |
| | VHDL is used to design complex digital - and analog - computer hardware. | | | Larry Saunders is an internationally recognized VHDL applications expert with 25 years experience in the fields of computer design and EDA tools development and usage. | | | For participants with no prior VHDL background, a three day class introduces VHDL using hands-on coding and simulation exercises designed to reinforce key ideas and illustrate the correspondence between VHDL modeling and real computer hardware. |
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http://vhdl.bluesailcomputing.com
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| | What is VHDL |
| | VHDL is not an information model, a database schema, a simulator, a toolset or a methodology! | | | VHDL can be used to describe hardware at the gate level or in a more abstract way. | | | VHDL is the language, you choose the tools, and the methodology... |
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http://www.doulos.com/knowhow/vhdl_designers_guide/what_is_vhdl
(260 words)
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| | VHDL FAQ |
| | VHDL was designed to be and is a technology independent design language. | | | Writing VHDL for synthesis is not particularly difficult, but you need to be disciplined, not only in your use of VHDL syntax but also your approach to writing VHDL for synthesis. | | | However, VHDL requires longer to learn and is not so amenable to quick-and-dirty coding. |
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http://www.doulos.com/knowhow/faq/vhdl_faq
(1419 words)
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| | The Hamburg VHDL Archive |
| | John Van Tassel: Femto-VHDL: The semantics of a subset of VHDL and its embedding in the HOL theorem-prover. | | | VHDL and Verilog sources for a programmable neural network processor by Suresh Kumar. | | | Not surprinsingly, makefiles and project files are optimized for their own VHDL simulator. |
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http://tech-www.informatik.uni-hamburg.de/vhdl/vhdl.html
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| | John Cooley on VHDL versus Verilog |
| | VHDL'S STRATEGIC RETREAT In the engineering press and on the Internet prior to the Verilog/VHDL Design Contest, the VHDL bigots managed to create an image that the only problem their language of choice had was in convincing the ASIC foundries to provide VHDL libraries. | | | VHDL International is publishing a table of available VITAL Libraries in VHDL Times next month. | | | VHDL International isn't about comparing languages, simulators or revenues. |
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http://www.cl.cam.ac.uk/users/mjcg/Verilog/Cooley-VHDL-Verilog.html
(3940 words)
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| | Comprehensive VHDL |
| | No previous knowledge of VHDL or software language experience is required, but delegates are expected to be computer literate and have a basic knowledge of digital hardware design. | | | The essential syntax and semantics of the VHDL language. | | | Further VHDL (days 3-5) builds on the foundation to prepare the engineer for practical project readiness, emphasising good coding style, how to make best use of the hardware, the development of test benches and VHDL project organisation. |
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http://www.doulos.com/content/training/comprehensive_vhdl_training.php
(868 words)
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| | VHDL Tutorial |
| | VHDL allows one to describe a digital system at the structural or the behavioral level. | | | In the VHDL file, we have defined a component for the full adder first. | | | This does not pose a problem in VHDL since they refer to different levels. |
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http://www.seas.upenn.edu/~ee201/vhdl/vhdl_primer.html
(2779 words)
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| | Links to VHDL sites |
| | VHDL pointers from the Association for Computing Machinery (ACM). | | | VHDL model of DLX example RISC processor used in Computer Architecture - A Quantitative Approach, by Hennessy and Patterson, and other models at the University of Adelaide, including the VHDL Cookbook. | | | VHDL United Kingdom,a communication network for UK VHDL Users, with links to related sites,book lists and reviews,and conference information. |
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http://www.sdsmt.edu/syseng/ee/courses/ee741/vhdl-links.html
(423 words)
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| | ePanorama |
| | GHDL - GHDL is a VHDL simulator, using the GCC technology. | | | Although it is a standard, vendors all choose different parts to implement and add their own quirks.In VHDL synthesis, we describe a program that would have the same behavior as the circuit we wish to create. | | | SAVANT: VHDL Analysis Tools - The SAVANT project is an effort by University of Cincinnati's Experimental Computing Laboratory to build freely redistributable VHDL analysis tools. |
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http://www.epanorama.net/links/fpga.html
(3945 words)
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| | VHDL Routines |
| | The VHDL code for a particular function can be implemented in many different ways. | | | These are simple routines that can easily be input into your Altera VHDL simulator. | | | These VHDL routines provide examples for getting started with VHDL programming. |
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http://et.nmsu.edu/~etti/winter98/electronics/beasley/routines/vhdl.html
(81 words)
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| | Microelectronics: VHDL Simulation Related Issues |
| | VHDL is the preferred language in developments initiated or led by the European Space Agency. | | | The VHSIC Hardware Description Language (VHDL) is a formal notation intended for use in all phases of the creation of electronic systems. | | | VHDL Models for Board-level Simulation Source Code Examples |
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http://www.estec.esa.nl/wsmwww/vhdl/vhdlpage.html
(564 words)
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| | Esperan - The World's Leading EDA Methodology Training Company. |
| | Here perl scripts, c training courses are the key issues which set us vhdl examples, vhdl tutorial apart from the training available from software tool vendors and small tcl scripts, fpga design, perl tutorial scale design consultancies. | | | Flexibility is tcl, tcl and tk, perl, pcb built into the tcl scripts, fpga design, perl tutorial systems from the start, from the modular way the courses are designed vhdl examples, vhdl tutorial to the portability of our training verilog training, xilinx, altera hardware. | | | Attend one of our special Esperan VHDL or Verilog workshops and not only will you build a complete design, including working hardware, but you will receive a free Esperan development board... |
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http://www.esperan.com
(766 words)
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| | VHDL Library of Arithmetic Units |
| | In this work, an Emacs mode for editing VHDL source code was developed. | | | Highly efficient circuit architectures are used, which are optimized for synthesis and cell-based design. | | | VHDL Mode is implemented as an Emacs package containing a collection of Lisp functions and is compatible with GNU Emacs and XEmacs. |
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http://www.iis.ee.ethz.ch/~zimmi/arith_lib.html
(634 words)
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| | Wiley::The VHDL Reference: A Practical Guide to Computer-Aided Integrated Circuit Design including VHDL-AMS |
| | The VHDL Reference: The essential guide for students and professionals working in computer hardware design and synthesis. | | | The Authors describe the concept of VHDL and VHDL-AMS for modelling and synthesis and explain how VHDL can be used for the design of digital systems. | | | The definitive guide to VHDL, this book combines a comprehensive reference of the VHDL syntax with tutorial and workshop materials that guide the reader through the principles of digital hardware design. |
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http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0471899720.html
(436 words)
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| | [No title] |
| | Each VHDL objects must be classified as being of a specific data type. | | | The VHDL 'library' statement is needed to make the 'ieee' library and/or additional libraries visible. | | | TEXTIO is a package of VHDL functions that read and write text files. |
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http://www.eng.auburn.edu/department/ee/mgc/vhdl.html
(3536 words)
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| | HDL Planet's VHDL Page |
| | At certain points the authors goes deep into the topic (simulation, delays etc...) and that could cause some inconvenience to beginners but I appreciate these because this is the first book covering those topics in depth that I have come across. | | | This introduces the idea of hardware description language and delineates all the set down reasons for its use and the benefits that ensue. | | | HDLPlanet's Review (Harish Y S) This is one of the best books available on VHDL. |
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http://hdlplanet.tripod.com/books/books.html
(864 words)
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| | ASC signs pact with DDC to distribute VHDL analyzer |
| | The VHDL Analyzer currently runs on WIN 32 platforms, supports file format and reads text or binary format input. | | | The output of this efficient, low cost VHDL Analyzer can be XML or File Intermediate Format. | | | ASC signs pact with DDC to distribute VHDL analyzer. |
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http://www.ascinc.com/news/pactwithddc.html
(179 words)
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| | Synthworks' Comprehensive VHDL Introduction Training |
| | Recommended as a first course in VHDL for design and verification engineers who need an in-depth understanding of VHDL and a solid foundation in RTL and testbench coding techniques. | | | The design projects utilize all techniques learned in lecture and demonstrate how VHDL is used in a project environment. | | | An in-depth introduction to VHDL and its application to design and verification of digital hardware (FPGAs and ASIC). |
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http://www.synthworks.com/vhd4intr.htm
(295 words)
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| | Aldec - Free Downloads and License Request |
| | Evita-VHDL is an interactive VHDL primer that provides a comprehensive overview of the VHDL language, complete reference guide, over 150 examples and a series of questions and answers at the end of each chapter. | | | Evita-Verilog is an interactive Verilog primer that provides a comprehensive overview of the Verilog language, complete reference guide, over 130 examples and a series of questions and answers at the end of each chapter. | | | Completely integrated FPGA design and simulation environment for VHDL, Verilog, SystemC, EDIF or Mixed designs. |
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http://www.aldec.com/Downloads
(174 words)
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| | Essential VHDL: RTL Synthesis Done Right |
| | VHDL source code for examples from Essential VHDL. | | | Essential VHDL provides a simple, hands-on approach to writing VHDL for RTL synthesis. | | | See the Table of Contents, Summary and comments from VHDL experts. |
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http://www.vahana.com/vhdl.htm
(90 words)
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| | VHDL and FPGA Resources on the Web |
| | Virtual ChipsVerilog and VHDL synthesizable cores and simulation test environments. | | | Detail can be found in the book Computer Architecture: A Quantitative Approach. | | | Warp2 has Windows 3.1 version and as well as SUN Unix version. |
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http://www.geocities.com/SiliconValley/Heights/8831/vhdlfpga.html
(361 words)
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| | VHDL Examples |
| | To use VHDL examples displayed as text in your Quartus II or MAX+PLUS II software, copy and paste the text from your web browser into the Quartus II or MAX+PLUS II software Text Editor. | | | Make sure that the file name of the VHDL design file (.vhd) corresponds to the entity name in the example. | | | For more information on VHDL, refer to Quartus |
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http://www.altera.com/support/examples/vhdl/vhdl.html
(143 words)
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| | Emacs VHDL Mode |
| | VHDL Mode is an Emacs major mode for editing VHDL code. | | | VHDL Mode 3.33 (GNU Emacs 20/21, XEmacs 20/21): | | | VHDL Mode 3.31 (GNU Emacs 20/21, XEmacs 20/21): |
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http://opensource.ethz.ch/emacs/vhdl-mode.html
(432 words)
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| | DirectVHDL for Mac OS X |
| | The only VHDL simulator available for Mac OS X! DirectVHDL is a low-cost, interactive VHDL simulator that is perfect for learning or personal use. | | | VHDL Simulator - allows you to simulate and debug your design with a graphical waveform viewer. | | | Copyright (c) 2001 Green Mountain Computing Systems, Inc. All rights reserved. |
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http://www.gmvhdl.com/mac-dv.html
(212 words)
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| | Catalog of compilers: VHDL |
| | In simpler terms, it is a VHDL parser which builds an object tree from VHDL source code. | | | VOM 1.0 is an object-oriented syntactic specification for VHDL written using the REFINE software design and synthesis environment. | | | The parse tree (in the form of an object tree) is provided, you would just need to add your own transformations. |
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http://www.idiom.com/free-compilers/LANG/VHDL-1.html
(207 words)
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| | Useful links: VHDL |
| | VHDL Synthesis Working Group: Group in charge of development of NUMERIC packages, IEEE Std 1076.3 | | | Survey of CORDIC algorithms for FPGA based computers | | | Free VHDL simulator, logic synthesis: Alliance tool set |
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http://members.aol.com/SGalaxyPub/useful_links_vhdl.htm
(175 words)
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| | VHDL reference material |
| | The two companies listed below provide the software and the foundry for you to design your own integrated circuit chips: www.altera.com www.xilinx.com Complete Computer Aided Design, CAD, packages are available from companies such as Cadence, Mentor Graphics and Synopsis. | | | The following PostScript file provides an introduction to VHDL and instructions for compiling and simulating using vcomp/vsim. | | | Using browser: www.symphonyeda.com/proddownloads.htm Choose Windows ~9.3MB or Linux ~9.3MB Execute the Windows file, choose 'setup' and follow instructions untar the Linux version and follow instructions For CMSC 411 the project check files are.chks for this VHDL. |
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http://www.csee.umbc.edu/help/VHDL/index.shtml
(538 words)
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| | VHDL Tutorial / VHDL Memo / VHDL source |
| | Amontec updates it weekly and bases all new VHDL projects on it (for VHDL projects on HDL Designer Series from Mentor). | | | All VHDL keywords, nice VHDL syntax example in a compact structure! | | | Using this amt_hdl_util library, Amontec save about 20% of time on every new custom VHDL projects. |
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http://www.amontec.com/vhdl_part.shtml
(300 words)
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| | Information on VHDL, Verilog, Synthesis, SystemC, Tcl, Perl As applicable to VLSI Design |
| | An Introductory VHDL Tutorial By "Green Mountain Computing Systems" which covers Structural Descriptions, Data Flow Descriptions, Behavioral Descriptions. | | | VHDL Language Guide Covers Language Overview, A First Look at VHDL, Objects, Data Types and Operators, Using Standard Logic, Concurrent Statements, Sequential Statements, Modularity Features, Partitioning Features, Test Benches, Keyword Reference, Examples Gallery | | | Many people and vendors have their own coding styles this is a list of a few coding styles open to the general public |
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http://www.angelfire.com/electronic/in/vlsi/vhdl.html
(1309 words)
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| | Symphony EDA Home |
| | Purchase VHDL Simili at our online store today. | | | Symphony EDA would like to thank all Simili users who generously contributed their designs for our validation purposes. | | | very fast VHDL Compiler and Simulator wrapped in a friendly, powerful, integrated development environment -- available for Windows and Linux |
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http://www.symphonyeda.com
(396 words)
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| | SAVANT: VHDL Analysis Tools |
| | The SAVANT project is an effort by University of Cincinnati's Experimental Computing Laboratory to build freely redistributable VHDL analysis tools. | | | The SCRAM analyzer will accept as input, VHDL, VHDL-AMS (under development), or VHDL-2001 (under development), check for syntactic and static semantic correctness, and store the model in the intermediate form (IIR). | | | It allows the user to create design libraries and helps the parser locate design libraries that are referenced in other VHDL descriptions. |
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http://www.ececs.uc.edu/~paw/savant
(482 words)
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| | VHDLSynth (1076.3) Home page |
| | We have one package which uses "BIT" logic and another which is "STD_LOGIC" (IEEE 1164-1993) based. | | | See our links page for a list of other IEEE specs and VHDL web sites. | | | Numeric Package Proposals for the work being done on this specification. |
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http://www.eda.org/vhdlsynth
(306 words)
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| | Full Circuit UK - VHDL Testbench Tool |
| | It is possible to directly write a test bench in inline VHDL but above simple designs inline VHDL starts to become complex so you will probably add a low level routine to handle the interfacing to your design and then specify the tests and results at a higher level of extraction. | | | BitN is a function to return the Nth bit of a hex number. | | | Writing with VHDL you would have to wait until you have compiled and simulated. |
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http://www.fullcircuit.com/TBtool.htm
(1417 words)
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| | EDA.ORG Home Page |
| | P1076.1 Standard VHDL Analog and Mixed-Signal Extensions (VHDL-AMS) | | | P1076.1.1 Standard VHDL Analog and Mixed-Signal Extensions - Packages for Multiple Energy Domain Support (StdPkgs) | | | Free VHDL models from Free Model Foundry ( |
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http://www.vhdl.org
(333 words)
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| | Welcome |
| | We've provided a number of resources here to help you research the current and past activities of the VASG and report language bugs, LRM ambiguities, and suggest improvements to VHDL. | | | Current language revision work is being performed under the project name "VHDL-200x". | | | Questions or problems regarding this web site should be directed to |
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http://www.eda.org/vasg
(103 words)
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| | VHDL Links |
| | VAUL - a VHDL analyzer and utility library | | | HDL Chip Design: A Practical Guide for Designing, Synthesis and Simulating ASICs and FPGAs using VHDL or Verilog | | | EE/CS295 - ASIC Design With VHDL Class Home Page |
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http://www.iti.mu-luebeck.de/~doering/VHDL_links.html
(79 words)
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| | Green Mountain Computing Systems, Inc. |
| | Green Mountain's comprehensive VHDL design entry and verification suite, VHDL Studio, is now even better with a brand new look for Windows, 4x performance increase, and SPARC/Solaris support. | | | LiveWire is a graphical testbench design tool for VHDL designs: supports both waveform-level and transaction-level testbenches; includes live integrated VHDL simulation. | | | The newly released DirectVHDL(tm) is a low-cost and easy-to-use VHDL simulator that's perfect for learning or home use. |
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http://www.gmvhdl.com
(198 words)
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| | SymphonyEDA Products Page |
| | The compiler/simulator can be used with or without the graphical user interface (as batch tools). | | | Drag and drop to waveform window to add new waveforms | | | is a low-cost, yet powerful and feature-rich VHDL development system designed for the serious hardware designer. |
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http://www.symphonyeda.com/products.htm
(510 words)
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| | Aldec Inc. - The Design Verification Company |
| | Aldec, Inc. today announced the release of Riviera 2005.08 with a new gate level simulation technology (SLP), VHDL and Verilog Linting and support for 64-bit Linux operating systems. | | | It also allows high performance simulation and debugging from one closely integrated environment. | | | Active-HDL supports mixed VHDL, Verilog, SystemC™ and EDIF design entries. |
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http://www.aldec.com
(229 words)
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| | Synthesis |
| | Intuitive logic synthesis environment with advanced optimization techniques, incremental debug/analysis, and advanced inferencing technology maximizes FPGA architecture independence, accelerates time to market, eliminates design defects and delivers superior quality of results. | | | Mature, industry-proven synthesis product for designing PLDs, FPGAs and ASICs, in VHDL or Verilog. |
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http://www.exemplar.com
(84 words)
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| | Intel 8051 Model |
| | Up to 4 Kbytes of program instructions can be stored in the internal memory of the 8051, or the 8051 can be configured to use up to 64 Kbytes of external program memory The majority of the 8051's instructions are executed within 12 clock cycles. | | | We developed a VHDL synthesizable model of the 8051 and a C++ based 8051 instruction-set simulator, both found below, on which we've based some research directions. | | | We've also developed some new architectural features that can be used to lower the power of an 8051, which will appear on this page in the future. |
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http://www.cs.ucr.edu/~dalton/i8051
(255 words)
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| | SOCcentral: ASIC, FPGA, EDA, and IP news and design information |
| | The tutorial includes an interactive overview of the VHDL hardware description language as well as including a complete VHDL Reference Guide with over 150 topics providing definitions and examples of key VHDL terms and concepts. | | | Digital Systems Design with VHDL and Synthesis: An Integrated Approach | | | IEEE Std VHDL 1076.1-1999: The Analog and Mixed-Signal Extensions for VHDL |
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http://www.soccentral.com/results.asp?CatID=475
(711 words)
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