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| writing testbenches: Writing Testbenches: Functional Verification of HDL Models Janick Bergeron, 2012-12-06 mental improvements during the same period. What is clearly needed in verification techniques and technology is the equivalent of a synthesis productivity breakthrough. In the second edition of Writing Testbenches, Bergeron raises the verification level of abstraction by introducing coverage-driven constrained-random transaction-level self-checking testbenches all made possible through the introduction of hardware verification languages (HVLs), such as e from Verisity and OpenVera from Synopsys. The state-of-art methodologies described in Writing Test benches will contribute greatly to the much-needed equivalent of a synthesis breakthrough in verification productivity. I not only highly recommend this book, but also I think it should be required reading by anyone involved in design and verification of today's ASIC, SoCs and systems. Harry Foster Chief Architect Verplex Systems, Inc. xviii Writing Testbenches: Functional Verification of HDL Models PREFACE If you survey hardware design groups, you will learn that between 60% and 80% of their effort is now dedicated to verification. |
| writing testbenches: Writing Testbenches: Functional Verification of HDL Models Janick Bergeron, 2012-10-21 mental improvements during the same period. What is clearly needed in verification techniques and technology is the equivalent of a synthesis productivity breakthrough. In the second edition of Writing Testbenches, Bergeron raises the verification level of abstraction by introducing coverage-driven constrained-random transaction-level self-checking testbenches all made possible through the introduction of hardware verification languages (HVLs), such as e from Verisity and OpenVera from Synopsys. The state-of-art methodologies described in Writing Test benches will contribute greatly to the much-needed equivalent of a synthesis breakthrough in verification productivity. I not only highly recommend this book, but also I think it should be required reading by anyone involved in design and verification of today's ASIC, SoCs and systems. Harry Foster Chief Architect Verplex Systems, Inc. xviii Writing Testbenches: Functional Verification of HDL Models PREFACE If you survey hardware design groups, you will learn that between 60% and 80% of their effort is now dedicated to verification. |
| writing testbenches: Writing Testbenches Janick Bergeron, 2000-01-31 CHAPTER 6 Architecting Testbenches 221 Reusable Verification Components 221 Procedural Interface 225 Development Process 226 Verilog Implementation 227 Packaging Bus-Functional Models 228 Utility Packages 231 VHDL Implementation 237 Packaging Bus-Functional Procedures 238 240 Creating a Test Harness 243 Abstracting the Client/Server Protocol Managing Control Signals 246 Multiple Server Instances 247 Utility Packages 249 Autonomous Generation and Monitoring 250 Autonomous Stimulus 250 Random Stimulus 253 Injecting Errors 255 Autonomous Monitoring 255 258 Autonomous Error Detection Input and Output Paths 258 Programmable Testbenches 259 Configuration Files 260 Concurrent Simulations 261 Compile-Time Configuration 262 Verifying Configurable Designs 263 Configurable Testbenches 265 Top Level Generics and Parameters 266 Summary 268 CHAPTER 7 Simulation Management 269 Behavioral Models 269 Behavioral versus Synthesizable Models 270 Example of Behavioral Modeling 271 Characteristics of a Behavioral Model 273 x Writing Testbenches: Functional Verification of HDL Models Modeling Reset 276 Writing Good Behavioral Models 281 Behavioral Models Are Faster 285 The Cost of Behavioral Models 286 The Benefits of Behavioral Models 286 Demonstrating Equivalence 289 Pass or Fail? 289 Managing Simulations 292 294 Configuration Management Verilog Configuration Management 295 VHDL Configuration Management 301 SDF Back-Annotation 305 Output File Management 309 Regression 312 Running Regressions 313 Regression Management 314 Summary 316 APPENDIX A Coding Guidelines 317 Directory Structure 318 VHDL Specific 320 Verilog Specific 320 General Coding Guidelines 321 Comments 321 Layout 323 Syntax 326 Debugging 329 Naming Guidelines 329 Capitalization 330 Identifiers 332 Constants 334 334 HDL Specific Filenames 336 HDL Coding Guidelines 336 337 Structure 337 Layout |
| writing testbenches: SystemVerilog for Verification Chris Spear, Greg Tumbush, 2012-02-14 Based on the highly successful second edition, this extended edition of SystemVerilog for Verification: A Guide to Learning the Testbench Language Features teaches all verification features of the SystemVerilog language, providing hundreds of examples to clearly explain the concepts and basic fundamentals. It contains materials for both the full-time verification engineer and the student learning this valuable skill. In the third edition, authors Chris Spear and Greg Tumbush start with how to verify a design, and then use that context to demonstrate the language features, including the advantages and disadvantages of different styles, allowing readers to choose between alternatives. This textbook contains end-of-chapter exercises designed to enhance students’ understanding of the material. Other features of this revision include: New sections on static variables, print specifiers, and DPI from the 2009 IEEE language standard Descriptions of UVM features such as factories, the test registry, and the configuration database Expanded code samples and explanations Numerous samples that have been tested on the major SystemVerilog simulators SystemVerilog for Verification: A Guide to Learning the Testbench Language Features, Third Edition is suitable for use in a one-semester SystemVerilog course on SystemVerilog at the undergraduate or graduate level. Many of the improvements to this new edition were compiled through feedback provided from hundreds of readers. |
| writing testbenches: Principles of Verifiable RTL Design Lionel Bening, Harry D. Foster, 2007-05-08 System designers, computer scientists and engineers have c- tinuously invented and employed notations for modeling, speci- ing, simulating, documenting, communicating, teaching, verifying and controlling the designs of digital systems. Initially these s- tems were represented via electronic and fabrication details. F- lowing C. E. Shannon’s revelation of 1948, logic diagrams and Boolean equations were used to represent digital systems in a fa- ion that de-emphasized electronic and fabrication detail while revealing logical behavior. A small number of circuits were made available to remove the abstraction of these representations when it was desirable to do so. As system complexity grew, block diagrams, timing charts, sequence charts, and other graphic and symbolic notations were found to be useful in summarizing the gross features of a system and describing how it operated. In addition, it always seemed necessary or appropriate to augment these documents with lengthy verbal descriptions in a natural language. While each notation was, and still is, a perfectly valid means of expressing a design, lack of standardization, conciseness, and f- mal definitions interfered with communication and the understa- ing between groups of people using different notations. This problem was recognized early and formal languages began to evolve in the 1950s when I. S. Reed discovered that flip-flop input equations were equivalent to a register transfer equation, and that xvi tor-like notation. Expanding these concepts Reed developed a no- tion that became known as a Register Transfer Language (RTL). |
| writing testbenches: Verilog: Frequently Asked Questions Shivakumar S. Chonnad, Needamangalam B. Balachander, 2007-05-08 The Verilog Hardware Description Language was first introduced in 1984. Over the 20 year history of Verilog, every Verilog engineer has developed his own personal “bag of tricks” for coding with Verilog. These tricks enable modeling or verifying designs more easily and more accurately. Developing this bag of tricks is often based on years of trial and error. Through experience, engineers learn that one specific coding style works best in some circumstances, while in another situation, a different coding style is best. As with any high-level language, Verilog often provides engineers several ways to accomplish a specific task. Wouldn’t it be wonderful if an engineer first learning Verilog could start with another engineer’s bag of tricks, without having to go through years of trial and error to decide which style is best for which circumstance? That is where this book becomes an invaluable resource. The book presents dozens of Verilog tricks of the trade on how to best use the Verilog HDL for modeling designs at various level of abstraction, and for writing test benches to verify designs. The book not only shows the correct ways of using Verilog for different situations, it also presents alternate styles, and discusses the pros and cons of these styles. |
| writing testbenches: Writing Testbenches using SystemVerilog Janick Bergeron, 2007-02-02 Verification is too often approached in an ad hoc fashion. Visually inspecting simulation results is no longer feasible and the directed test-case methodology is reaching its limit. Moore's Law demands a productivity revolution in functional verification methodology. Writing Testbenches Using SystemVerilog offers a clear blueprint of a verification process that aims for first-time success using the SystemVerilog language. From simulators to source management tools, from specification to functional coverage, from I's and O's to high-level abstractions, from interfaces to bus-functional models, from transactions to self-checking testbenches, from directed testcases to constrained random generators, from behavioral models to regression suites, this book covers it all. Writing Testbenches Using SystemVerilog presents many of the functional verification features that were added to the Verilog language as part of SystemVerilog. Interfaces, virtual modports, classes, program blocks, clocking blocks and others SystemVerilog features are introduced within a coherent verification methodology and usage model. Writing Testbenches Using SystemVerilog introduces the reader to all elements of a modern, scalable verification methodology. It is an introduction and prelude to the verification methodology detailed in the Verification Methodology Manual for SystemVerilog. It is a SystemVerilog version of the author's bestselling book Writing Testbenches: Functional Verification of HDL Models. |
| writing testbenches: VHDL for Logic Synthesis Andrew Rushton, 2011-03-08 Making VHDL a simple and easy-to-use hardware description language Many engineers encountering VHDL (very high speed integrated circuits hardware description language) for the first time can feel overwhelmed by it. This book bridges the gap between the VHDL language and the hardware that results from logic synthesis with clear organisation, progressing from the basics of combinational logic, types, and operators; through special structures such as tristate buses, register banks and memories, to advanced themes such as developing your own packages, writing test benches and using the full range of synthesis types. This third edition has been substantially rewritten to include the new VHDL-2008 features that enable synthesis of fixed-point and floating-point hardware. Extensively updated throughout to reflect modern logic synthesis usage, it also contains a complete case study to demonstrate the updated features. Features to this edition include: a common VHDL subset which will work across a range of different synthesis systems, targeting a very wide range of technologies a design style that results in long design lifetimes, maximum design reuse and easy technology retargeting a new chapter on a large scale design example based on a digital filter from design objective and design process, to testing strategy and test benches a chapter on writing test benches, with everything needed to implement a test-based design strategy extensive coverage of data path design, including integer, fixed-point and floating-point arithmetic, logic circuits, shifters, tristate buses, RAMs, ROMs, state machines, and decoders Focused specifically on logic synthesis, this book is for professional hardware engineers using VHDL for logic synthesis, and digital systems designers new to VHDL but familiar with digital systems. It offers all the knowledge and tools needed to use VHDL for logic synthesis. Organised in themed chapters and with a comprehensive index, this complete reference will also benefit postgraduate students following courses on microelectronics or VLSI/ semiconductors and digital design. |
| writing testbenches: Design Through Verilog HDL T. R. Padmanabhan, B. Bala Tripura Sundari, 2003-11-05 A comprehensive resource on Verilog HDL for beginners and experts Large and complicated digital circuits can be incorporated into hardware by using Verilog, a hardware description language (HDL). A designer aspiring to master this versatile language must first become familiar with its constructs, practice their use in real applications, and apply them in combinations in order to be successful. Design Through Verilog HDL affords novices the opportunity to perform all of these tasks, while also offering seasoned professionals a comprehensive resource on this dynamic tool. Describing a design using Verilog is only half the story: writing test-benches, testing a design for all its desired functions, and how identifying and removing the faults remain significant challenges. Design Through Verilog HDL addresses each of these issues concisely and effectively. The authors discuss constructs through illustrative examples that are tested with popular simulation packages, ensuring the subject matter remains practically relevant. Other important topics covered include: Primitives Gate and Net delays Buffers CMOS switches State machine design Further, the authors focus on illuminating the differences between gate level, data flow, and behavioral styles of Verilog, a critical distinction for designers. The book's final chapters deal with advanced topics such as timescales, parameters and related constructs, queues, and switch level design. Each chapter concludes with exercises that both ensure readers have mastered the present material and stimulate readers to explore avenues of their own choosing. Written and assembled in a paced, logical manner, Design Through Verilog HDL provides professionals, graduate students, and advanced undergraduates with a one-of-a-kind resource. |
| writing testbenches: A Practical Guide for SystemVerilog Assertions Srikanth Vijayaraghavan, Meyyappan Ramanathan, 2006-07-04 SystemVerilog language consists of three very specific areas of constructs -- design, assertions and testbench. Assertions add a whole new dimension to the ASIC verification process. Assertions provide a better way to do verification proactively. Traditionally, engineers are used to writing verilog test benches that help simulate their design. Verilog is a procedural language and is very limited in capabilities to handle the complex Asic's built today. SystemVerilog assertions (SVA) are a declarative and temporal language that provides excellent control over time and parallelism. This provides the designers a very strong tool to solve their verification problems. While the language is built solid, the thinking is very different from the user's perspective when compared to standard verilog language. The concept is still very new and there is not enough expertise in the field to adopt this methodology and be successful. While the language has been defined very well, there is no practical guide that shows how to use the language to solve real verification problems. This book will be the practical guide that will help people to understand this new methodology. Today's SoC complexity coupled with time-to-market and first-silicon success pressures make assertion based verification a requirement and this book points the way to effective use of assertions. Satish S. Iyengar, Director, ASIC Engineering, Crimson Microsystems, Inc. This book benefits both the beginner and the more advanced users of SystemVerilog Assertions (SVA). First by introducing the concept of Assertion Based Verification (ABV) in a simple to understand way, then by discussing the myriad of ideas in a broader scope that SVA can accommodate. The many real life examples, provided throughout the book, are especially useful. Irwan Sie, Director, IC Design, ESS Technology, Inc. SystemVerilogAssertions is a new language that can find and isolate bugs early in the design cycle. This book shows how to verify complex protocols and memories using SVA with seeral examples. This book is a good reference guide for both design and verification engineers. Derick Lin, Senior Director, Engineering, Airgo Networks, Inc. |
| writing testbenches: Effective Coding with VHDL Ricardo Jasinski, 2016-05-27 A guide to applying software design principles and coding practices to VHDL to improve the readability, maintainability, and quality of VHDL code. This book addresses an often-neglected aspect of the creation of VHDL designs. A VHDL description is also source code, and VHDL designers can use the best practices of software development to write high-quality code and to organize it in a design. This book presents this unique set of skills, teaching VHDL designers of all experience levels how to apply the best design principles and coding practices from the software world to the world of hardware. The concepts introduced here will help readers write code that is easier to understand and more likely to be correct, with improved readability, maintainability, and overall quality. After a brief review of VHDL, the book presents fundamental design principles for writing code, discussing such topics as design, quality, architecture, modularity, abstraction, and hierarchy. Building on these concepts, the book then introduces and provides recommendations for each basic element of VHDL code, including statements, design units, types, data objects, and subprograms. The book covers naming data objects and functions, commenting the source code, and visually presenting the code on the screen. All recommendations are supported by detailed rationales. Finally, the book explores two uses of VHDL: synthesis and testbenches. It examines the key characteristics of code intended for synthesis (distinguishing it from code meant for simulation) and then demonstrates the design and implementation of testbenches with a series of examples that verify different kinds of models, including combinational, sequential, and FSM code. Examples from the book are also available on a companion website, enabling the reader to experiment with the complete source code. |
| writing testbenches: VHDL Coding Styles and Methodologies Ben Cohen, 2012-12-06 VHDL Coding Styles and Methodologies was originally written as a teaching tool for a VHDL training course. The author began writing the book because he could not find a practical and easy to read book that gave in depth coverage of both, the language and coding methodologies. This book is intended for: 1. College students. It is organized in 13 chapters, each covering a separate aspect of the language, with complete examples. All VHDL code described in the book is on a companion 3.5 PC disk. Students can compile and simulate the examples to get a greater understanding of the language. Each chapter includes a series of exercises to reinforce the concepts. 2. Engineers. It is written by an aerospace engineer who has 26 years of hardware, software, computer architecture and simulation experience. It covers practical applications ofVHDL with coding styles and methodologies that represent what is current in the industry. VHDL synthesizable constructs are identified. Guidelines for testbench designs are provided. Also included is a project for the design of a synthesizable Universal Asynchronous Receiver Transmitter (UART), and a testbench to verify proper operation of the UART in a realistic environment, with CPU interfaces and transmission line jitter. An introduction to VHDL Initiative Toward ASIC Libraries (VITAL) is also provided. The book emphasizes VHDL 1987 standard but provides guidelines for features implemented in VHDL 1993. |
| writing testbenches: Logic Design and Verification Using SystemVerilog (Revised) Donald Thomas, 2016-03-01 SystemVerilog is a Hardware Description Language that enables designers to work at the higher levels of logic design abstractions that match the increased complexity of current day integrated circuit and field-programmable gate array (FPGA) designs. The majority of the book assumes a basic background in logic design and software programming concepts. It is directed at: * students currently in an introductory logic design course that also teaches SystemVerilog, * designers who want to update their skills from Verilog or VHDL, and * students in VLSI design and advanced logic design courses that include verification as well as design topics. The book starts with a tutorial introduction on hardware description languages and simulation. It proceeds to the register-transfer design topics of combinational and finite state machine (FSM) design - these mirror the topics of introductory logic design courses. The book covers the design of FSM-datapath designs and their interfaces, including SystemVerilog interfaces. Then it covers the more advanced topics of writing testbenches including using assertions and functional coverage. A comprehensive index provides easy access to the book's topics.The goal of the book is to introduce the broad spectrum of features in the language in a way that complements introductory and advanced logic design and verification courses, and then provides a basis for further learning.Solutions to problems at the end of chapters, and text copies of the SystemVerilog examples are available from the author as described in the Preface. |
| writing testbenches: Digital VLSI Systems Design Seetharaman Ramachandran, 2014-09-18 This book provides step-by-step guidance on how to design VLSI systems using Verilog. It shows the way to design systems that are device, vendor and technology independent. Coverage presents new material and theory as well as synthesis of recent work with complete Project Designs using industry standard CAD tools and FPGA boards. The reader is taken step by step through different designs, from implementing a single digital gate to a massive design consuming well over 100,000 gates. All the design codes developed in this book are Register Transfer Level (RTL) compliant and can be readily used or amended to suit new projects. |
| writing testbenches: Hardware Verification with C++ Mike Mintz, Robert Ekendahl, 2006-12-11 Describes a small verification library with a concentration on user adaptability such as re-useable components, portable Intellectual Property, and co-verification. Takes a realistic view of reusability and distills lessons learned down to a tool box of techniques and guidelines. |
| writing testbenches: Constraint-Based Verification Jun Yuan, Carl Pixley, Adnan Aziz, 2006-01-13 Covers the methodology and state-of-the-art techniques of constrained verification, which is new and popular. It relates constrained verification with the also-hot technology called assertion-based design. Discussed and clarifies language issues, critical to both the above, which will help the implementation of these languages. |
| writing testbenches: Open Verification Methodology Cookbook Mark Glasser, 2009-07-24 Functional verification is an art as much as a science. It requires not only creativity and cunning, but also a clear methodology to approach the problem. The Open Verification Methodology (OVM) is a leading-edge methodology for verifying designs at multiple levels of abstraction. It brings together ideas from electrical, systems, and software engineering to provide a complete methodology for verifying large scale System-on-Chip (SoC) designs. OVM defines an approach for developing testbench architectures so they are modular, configurable, and reusable. This book is designed to help both novice and experienced verification engineers master the OVM through extensive examples. It describes basic verification principles and explains the essentials of transaction-level modeling (TLM). It leads readers from a simple connection of a producer and a consumer through complete self-checking testbenches. It explains construction techniques for building configurable, reusable testbench components and how to use TLM to communicate between them. Elements such as agents and sequences are explained in detail. |
| writing testbenches: VHDL-2008 Peter J. Ashenden, Jim Lewis, 2007-11-26 VHDL-2008: Just the New Stuff, as its title says, introduces the new features added to the latest revision of the IEEE standard for the VHDL hardware description language. Written by the Chair and Technical Editor of the IEEE working group, the book is an authoritative guide to how the new features work and how to use them to improve design productivity. It will be invaluable for early adopters of the new language version, for tool implementers, and for those just curious about where VHDL is headed.* First in the market describing the new features of VHDL 2008;* Just the new features, so existing users and implementers can focus on what's new; * Helps readers to learn the new features soon, rather than waiting for new editions of complete VHDL reference books. * Authoritative, written by experts in the area; * Tutorial style, making it more accessible than the VHDL Standard Language Reference Manual. |
| writing testbenches: Digital System Design with VHDL Mark Zwoliński, 2000 Electronic systems based on digital principles are becoming ubiquitous. A good design approach to these systems is essential and a top-down methodology is favoured. Such an approach is vastly simplified by the use of computer modeling to describe the systems. VHDL is a formal language which allows a designer to model the behaviours and structure of a digital circuit on a computer before implementation. Digital System Design with VHDL is intended both for students on Digital Design courses and practitioners who would like to integrate digital design and VHDL synthesis in the workplace. Its unique approach combines the principles of digital design with a guide to the use of VHDL. Synthesis issues are discussed and practical guidelines are provided for improving simulation accuracy and performance. Features: a practical perspective is obtained by the inclusion of real-life examples an emphasis on software engineering practices encourages clear coding and adequate documentation of the process demonstrates the effects of particular coding styles on synthesis and simulation efficiency covers the major VHDL standards includes an appendix with examples in Verilog |
| writing testbenches: The Handbook of Multimedia Information Management William I. Grosky, Ramesh Jain, Rajiv Mehrotra, 1997 |
| writing testbenches: Digital Logic Circuits using VHDL Atul P. Godse, Dr. Deepali A. Godse, 2021-01-01 The book is written for an undergraduate course on digital electronics. The book provides basic concepts, procedures and several relevant examples to help the readers to understand the analysis and design of various digital circuits. It also introduces hardware description language, VHDL. The book teaches you the logic gates, logic families, Boolean algebra, simplification of logic functions, analysis and design of combinational circuits using SSI and MSI circuits and analysis and design of the sequential circuits. This book provides in-depth information about multiplexers, de-multiplexers, decoders, encoders, circuits for arithmetic operations, various types of flip-flops, counters and registers. It also covers asynchronous sequential circuits, memories and programmable logic devices. |
| writing testbenches: The Verilog® Hardware Description Language Donald Thomas, Philip Moorby, 2008-09-11 XV From the Old to the New xvii Acknowledgments xx| Verilog A Tutorial Introduction Getting Started 2 A Structural Description 2 Simulating the binaryToESeg Driver 4 Creating Ports For the Module 7 Creating a Testbench For a Module 8 Behavioral Modeling of Combinational Circuits 11 Procedural Models 12 Rules for Synthesizing Combinational Circuits 13 Procedural Modeling of Clocked Sequential Circuits 14 Modeling Finite State Machines 15 Rules for Synthesizing Sequential Systems 18 Non-Blocking Assignment ( |
| writing testbenches: Digital System Design with VHDL Zwolinski, 2004-09 |
| writing testbenches: Digital Design and Implementation with Field Programmable Devices Zainalabedin Navabi, 2006-02-28 This book is on digital system design for programmable devices, such as FPGAs, CPLDs, and PALs. A designer wanting to design with programmable devices must understand digital system design at the RT (Register Transfer) level, circuitry and programming of programmable devices, digital design methodologies, use of hardware description languages in design, design tools and environments; and finally, such a designer must be familiar with one or several digital design tools and environments. Books on these topics are many, and they cover individual design topics with very general approaches. The number of books a designer needs to gather the necessary information for a practical knowledge of design with field programmable devices can easily reach five or six, much of which is on theoretical concepts that are not directly applicable to RT level design with programmable devices. The focus of this book is on a practical knowledge of digital system design for programmable devices. The book covers all necessary topics under one cover, and covers each topic just enough that is actually used by an advanced digital designer. In the three parts of the book, we cover digital system design concepts, use of tools, and systematic design of digital systems. In the first chapter, design methodologies, use of simulation and synthesis tools and programming programmable devices are discussed. Based on this automated design methodology, the next four chapters present the necessary background for logic design, the Verilog language, programmable devices, and computer architectures. |
| writing testbenches: Verification Methodology Manual for SystemVerilog Janick Bergeron, Eduard Cerny, Alan Hunter, Andy Nightingale, 2005-09-28 Offers users the first resource guide that combines both the methodology and basics of SystemVerilog Addresses how all these pieces fit together and how they should be used to verify complex chips rapidly and thoroughly. Unique in its broad coverage of SystemVerilog, advanced functional verification, and the combination of the two. |
| writing testbenches: Circuit Design with VHDL, third edition Volnei A. Pedroni, 2020-04-14 A completely updated and expanded comprehensive treatment of VHDL and its applications to the design and simulation of real, industry-standard circuits. This comprehensive treatment of VHDL and its applications to the design and simulation of real, industry-standard circuits has been completely updated and expanded for the third edition. New features include all VHDL-2008 constructs, an extensive review of digital circuits, RTL analysis, and an unequaled collection of VHDL examples and exercises. The book focuses on the use of VHDL rather than solely on the language, with an emphasis on design examples and laboratory exercises. The third edition begins with a detailed review of digital circuits (combinatorial, sequential, state machines, and FPGAs), thus providing a self-contained single reference for the teaching of digital circuit design with VHDL. In its coverage of VHDL-2008, it makes a clear distinction between VHDL for synthesis and VHDL for simulation. The text offers complete VHDL codes in examples as well as simulation results and comments. The significantly expanded examples and exercises include many not previously published, with multiple physical demonstrations meant to inspire and motivate students. The book is suitable for undergraduate and graduate students in VHDL and digital circuit design, and can be used as a professional reference for VHDL practitioners. It can also serve as a text for digital VLSI in-house or academic courses. |
| writing testbenches: A VHDL Primer Jayaram Bhasker, 1995 This book details molecular methodologies used in identifying a disease gene, from the initial stage of study design to the next stage of preliminary locus identification, and ending with stages involved in target characterization and validation. |
| writing testbenches: VHDL Zainalabedin Navabi, 1998 Complete with coverage of the latest VHDL93 standard, this edition offers engineers a thorough guide to the use of VHDL hardware description language in the analysis, simulation, and modeling of complicated microelectronic circuits. Extensive worked problems and examples listed in Verilog as well as VHDL set this edition apart from other VHDL texts. |
| writing testbenches: Verilog for Digital Design and Simulation Richard Johnson, 2025-06-09 Verilog for Digital Design and Simulation Verilog for Digital Design and Simulation is an authoritative and comprehensive guide crafted for engineers, students, and professionals seeking mastery in digital system design using Verilog HDL. Spanning from fundamental language constructs to advanced design methodologies, the book elucidates Verilog’s syntax, hierarchical modeling, combinational and sequential circuit design, and the intricacies of timing, simulation, and synthesis. Each chapter is meticulously structured, introducing not only essential concepts such as data types, modules, and event semantics, but also delving into the nuances of parameterization, race condition mitigation, and scalable hardware description techniques. Beyond foundational theory, the book excels in bridging the gap to practical design verification and implementation. Readers are guided through modern testbench construction, comprehensive verification methodologies including UVM and SystemVerilog integration, and critical simulation-centric debugging practices. The text emphasizes robust code practices, resource and power optimization strategies, formal equivalence checking, and mixed-language co-simulation—all with direct application to real-world industrial flows. Special attention is devoted to interface design, bus and memory protocols, and the implementation of system-level emulation and FPGA prototyping. The concluding sections explore the evolving HDL ecosystem, highlighting open-source tools, high-level synthesis, security, and best practices for large-scale projects. By synthesizing up-to-date research insights and offering future-facing perspectives, Verilog for Digital Design and Simulation establishes itself as an indispensable reference for both seasoned hardware developers and newcomers aspiring to excel in the dynamic field of digital design and simulation. |
| writing testbenches: SystemVerilog For Design Stuart Sutherland, Simon Davidmann, Peter Flake, 2013-12-01 SystemVerilog is a rich set of extensions to the IEEE 1364-2001 Verilog Hardware Description Language (Verilog HDL). These extensions address two major aspects of HDL based design. First, modeling very large designs with concise, accurate, and intuitive code. Second, writing high-level test programs to efficiently and effectively verify these large designs. This book, SystemVerilog for Design, addresses the first aspect of the SystemVerilog extensions to Verilog. Important modeling features are presented, such as two-state data types, enumerated types, user-defined types, structures, unions, and interfaces. Emphasis is placed on the proper usage of these enhancements for simulation and synthesis. A companion to this book, SystemVerilog for Verification, covers the second aspect of SystemVerilog. |
| writing testbenches: The Complete Verilog Book Vivek Sagdeo, 2007-05-08 The Verilog hardware description language (HDL) provides the ability to describe digital and analog systems. This ability spans the range from descriptions that express conceptual and architectural design to detailed descriptions of implementations in gates and transistors. Verilog was developed originally at Gateway Design Automation Corporation during the mid-eighties. Tools to verify designs expressed in Verilog were implemented at the same time and marketed. Now Verilog is an open standard of IEEE with the number 1364. Verilog HDL is now used universally for digital designs in ASIC, FPGA, microprocessor, DSP and many other kinds of design-centers and is supported by most of the EDA companies. The research and education that is conducted in many universities is also using Verilog. This book introduces the Verilog hardware description language and describes it in a comprehensive manner. Verilog HDL was originally developed and specified with the intent of use with a simulator. Semantics of the language had not been fully described until now. In this book, each feature of the language is described using semantic introduction, syntax and examples. Chapter 4 leads to the full semantics of the language by providing definitions of terms, and explaining data structures and algorithms. The book is written with the approach that Verilog is not only a simulation or synthesis language, or a formal method of describing design, but a complete language addressing all of these aspects. This book covers many aspects of Verilog HDL that are essential parts of any design process. |
| writing testbenches: SystemVerilog Assertions Handbook Ben Cohen, Srinivasan Venkataramanan, Ajeetha Kumari, 2005 |
| writing testbenches: Digital System Design with SystemVerilog Mark Zwolinski, 2009-10-23 The Definitive, Up-to-Date Guide to Digital Design with SystemVerilog: Concepts, Techniques, and Code To design state-of-the-art digital hardware, engineers first specify functionality in a high-level Hardware Description Language (HDL)—and today’s most powerful, useful HDL is SystemVerilog, now an IEEE standard. Digital System Design with SystemVerilog is the first comprehensive introduction to both SystemVerilog and the contemporary digital hardware design techniques used with it. Building on the proven approach of his bestselling Digital System Design with VHDL, Mark Zwolinski covers everything engineers need to know to automate the entire design process with SystemVerilog—from modeling through functional simulation, synthesis, timing simulation, and verification. Zwolinski teaches through about a hundred and fifty practical examples, each with carefully detailed syntax and enough in-depth information to enable rapid hardware design and verification. All examples are available for download from the book's companion Web site, zwolinski.org. Coverage includes Using electronic design automation tools with programmable logic and ASIC technologies Essential principles of Boolean algebra and combinational logic design, with discussions of timing and hazards Core modeling techniques: combinational building blocks, buffers, decoders, encoders, multiplexers, adders, and parity checkers Sequential building blocks: latches, flip- flops, registers, counters, memory, and sequential multipliers Designing finite state machines: from ASM chart to D flip-flops, next state, and output logic Modeling interfaces and packages with SystemVerilog Designing testbenches: architecture, constrained random test generation, and assertion-based verification Describing RTL and FPGA synthesis models Understanding and implementing Design-for-Test Exploring anomalous behavior in asynchronous sequential circuits Performing Verilog-AMS and mixed-signal modeling Whatever your experience with digital design, older versions of Verilog, or VHDL, this book will help you discover SystemVerilog’s full power and use it to the fullest. |
| writing testbenches: Build Your Own Test Equipment Carl J. Bergquist, 1998 Contains information on how to build several pragmatic testing devices. Designed to be highly practical and space conscious, this book uses only commonly available components. Numerous construction tips are included, as pesky anomalies crop up in every project. |
| writing testbenches: Component Design by Example Ben Cohen, 2001 |
| writing testbenches: FPGA Prototyping by SystemVerilog Examples Pong P. Chu, 2018-05-04 A hands-on introduction to FPGA prototyping and SoC design This is the successor edition of the popular FPGA Prototyping by Verilog Examples text. It follows the same “learning-by-doing” approach to teach the fundamentals and practices of HDL synthesis and FPGA prototyping. The new edition uses a coherent series of examples to demonstrate the process to develop sophisticated digital circuits and IP (intellectual property) cores, integrate them into an SoC (system on a chip) framework, realize the system on an FPGA prototyping board, and verify the hardware and software operation. The examples start with simple gate-level circuits, progress gradually through the RT (register transfer) level modules, and lead to a functional embedded system with custom I/O peripherals and hardware accelerators. Although it is an introductory text, the examples are developed in a rigorous manner, and the derivations follow the strict design guidelines and coding practices used for large, complex digital systems. The book is completely updated and uses the SystemVerilog language, which “absorbs” the Verilog language. It presents the hardware design in the SoC context and introduces the hardware-software co-design concept. Instead of treating examples as isolated entities, the book integrates them into a single coherent SoC platform that allows readers to explore both hardware and software “programmability” and develop complex and interesting embedded system projects. The new edition: Adds four general-purpose IP cores, which are multi-channel PWM (pulse width modulation) controller, I2C controller, SPI controller, and XADC (Xilinx analog-to-digital converter) controller. Introduces a music synthesizer constructed with a DDFS (direct digital frequency synthesis) module and an ADSR (attack-decay-sustain-release) envelope generator. Expands the original video controller into a complete stream based video subsystem that incorporates a video synchronization circuit, a test-pattern generator, an OSD (on-screen display) controller, a sprite generator, and a frame buffer. Provides a detailed discussion on blocking and nonblocking statements and coding styles. Describes basic concepts of software-hardware co-design with Xilinx MicroBlaze MCS soft-core processor. Provides an overview of bus interconnect and interface circuit. Presents basic embedded system software development. Suggests additional modules and peripherals for interesting and challenging projects. FPGA Prototyping by SystemVerilog Examples makes a natural companion text for introductory and advanced digital design courses and embedded system courses. It also serves as an ideal self-teaching guide for practicing engineers who wish to learn more about this emerging area of interest. |
| writing testbenches: Quick Start Guide to Verilog Brock J. LaMeres, 2019-02-28 This textbook provides a starter’s guide to Verilog, to be used in conjunction with a one-semester course in Digital Systems Design, or on its own for readers who only need an introduction to the language. This book is designed to match the way the material is actually taught in the classroom. Topics are presented in a manner which builds foundational knowledge before moving onto advanced topics. The author has designed the presentation with learning goals and assessment at its core. Each section addresses a specific learning outcome that the student should be able to “do” after its completion. The concept checks and exercise problems provide a rich set of assessment tools to measure student performance on each outcome. Written the way the material is taught, enabling a bottom-up approach to learning which culminates with a high-level of learning, with a solid foundation; Emphasizes examples from which students can learn: contains a solved example for nearly every section in the book; Includes more than 200 exercise problems, as well as concept check questions for each section, tied directly to specific learning outcomes. |
| writing testbenches: Verilog — 2001 Stuart Sutherland, 2012-12-06 by Phil Moorby The Verilog Hardware Description Language has had an amazing impact on the mod em electronics industry, considering that the essential composition of the language was developed in a surprisingly short period of time, early in 1984. Since its introduc tion, Verilog has changed very little. Over time, users have requested many improve ments to meet new methodology needs. But, it is a complex and time consuming process to add features to a language without ambiguity, and maintaining consistency. A group of Verilog enthusiasts, the IEEE 1364 Verilog committee, have broken the Verilog feature doldrums. These individuals should be applauded. They invested the time and energy, often their personal time, to understand and resolve an extensive wish-list of language enhancements. They took on the task of choosing a feature set that would stand up to the scrutiny of the standardization process. I would like to per sonally thank this group. They have shown that it is possible to evolve Verilog, rather than having to completely start over with some revolutionary new language. The Verilog 1364-2001 standard provides many of the advanced building blocks that users have requested. The enhancements include key components for verification, abstract design, and other new methodology capabilities. As designers tackle advanced issues such as automated verification, system partitioning, etc., the Verilog standard will rise to meet the continuing challenge of electronics design. |
| writing testbenches: Hardware Verification with System Verilog Mike Mintz, Robert Ekendahl, 2007-05-03 This is the second of our books designed to help the professional verifier manage complexity. This time, we have responded to a growing interest not only in object-oriented programming but also in SystemVerilog. The writing of this second handbook has been just another step in an ongoing masochistic endeavor to make your professional lives as painfree as possible. The authors are not special people. We have worked in several companies, large and small, made mistakes, and generally muddled through our work. There are many people in the industry who are smarter than we are, and many coworkers who are more experienced. However, we have a strong desire to help. We have been in the lab when we bring up the chips fresh from the fab, with customers and sales breathing down our necks. We’ve been through software 1 bring-up and worked on drivers that had to work around bugs in production chips. What we feel makes us unique is our combined broad experience from both the software and hardware worlds. Mike has over 20 years of experience from the software world that he applies in this book to hardware verification. Robert has over 12 years of experience with hardware verification, with a focus on environments and methodology. |
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