The Verilog® Hardware Description Language


Book Description

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 ("







The Verilog® Hardware Description Language


Book Description

•• XVII Acknowledgments CHAPTER 1 Verilog - A Tutorial Introduction 1 Getting Started 2 A Structural Description 2 Simulating the NAND Latch 4 Module Hleral'Chy 6 The Counter 7 Components of the Counter 9 A Clock for the System 10 Tying the Whole Circuit Together 11 Using An Alternate Description of the Flip Flop 13 Behavioral Modeling 1 S A Behavioral Model of the m16 Counter 16 Mixing Structure and Behavior 18 Assignment Statements 22 Summary on Mixing Behavioral and Structural Descriptions 23 Creating a Testbench For a Module 24 Summary 2S Tutorial Guide to Formal Syntax Specification 26 Exercises 30 CHAPTER 2 Behavioral Modeling 33 Process Model 33 If-Then-Else 3S Where Does The ELSE Belong? 39 The Conditional Operator 41 Loops 41 Four Basic Loop Statements 42 Exiting Loops on Exceptional Conditions 45 Multi-way branching 46 If-Else-If 46 Case 46 Comparison of Case and If-Else-If 48 viii The Verilog Hardware Description Language Casez and Casex 49 Functions and Tasks SO Tasks 52 Functions 55 A Structural View 57 Rules of Scope and Hierarchical Names S9 Rules of Scope 60 Hierarchical Names 62 Summary 63 Exerdses 63 CHAPTER 3 Concurrent Processes 6S Concu"ent Processes 6S Events 67 Event Control Statement 67 Named Events 69 The Walt Statement 72 A Complete Producer-Consumer Handshake 74 Comparison of the Wait and While Statements 77 Comparison of Wait and Event Control Statements 78 A Concu"ent Process Example 78 Disabling Named Blocks 84 Intra-Assignment Control and Timing Events 87 Procedural Continuous Assignment 90










IEEE Std 1364-1995


Book Description




IEEE Standard Verilog Hardware Description Language


Book Description

The Verilog Hardware Description Language (HDL) is defined in this standard. Verilog HDL is a formal notation intended for use in all phases of the creation of electronic systems. Because it is both machine readable and human readable, it supports the development, verification, synthesis, and testing of hardware designs; the communication of hardware design data; and the maintenance, modification, and procurement of hardware. The primary audiences for this standard are the implementors of tools supporting the language and advanced users of the language.







The Complete Verilog Book


Book Description

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.