Lecture 14 Test Bench Design
|
|
|
- Kristopher Stephens
- 6 years ago
- Views:
Transcription
1 CPE 487: Digital System Design Spring 2018 Lecture 14 Test Bench Design Bryan Ackland Department of Electrical and Computer Engineering Stevens Institute of Technology Hoboken, NJ
2 Testing Digital Circuits In our class examples, circuits were limited to a few input & outputs Easy to set up test bench with processes to explicitly drive the inputs Look at output waveforms to check correct operation A B Y But how do we test this one? Processor for SONY PlayStation 3 2
3 Test Vectors For large complex designs, designers will set up a suite of test vectors One or more files that contain a sequence of inputs and expected outputs inputs expected outputs XX X Input vectors are typically applied to circuit under test at some regular clock rate. Outputs are read at same rate and compared to expected outputs It can take many millions of vectors to adequately test a complex chip e.g., a microprocessor 3
4 Design Verification vs. Product Testing During the design process, we develop functional test vectors Apply vectors similar to what might be expected in normal operation of chip Look for correct functionality across broad range of expected inputs Purpose of these functional vectors is to debug the design Each time design is refined, we reapply the functional vectors to check that no mistake has been made in moving from behavioral modeling to implementation Once design has been synthesized into gates, and checked once more using the functional vectors, we develop a new set of manufacturing test vectors Now checking for manufacturing defects 4
5 Testing for Manufacturing Defects Popular approach is to assume that all manufacturing faults can be modeled as a single node being stuck-at either a 0 or a 1 Ideally, develop a set of test vectors that would show an error if any node is stuck-at 0 or 1 Not practical as it would take too many vectors to exhaustively test for all stuck at faults tradeoff between test time and cost of sending bad chips into the field Ratio of tested faults to all possible faults is known as fault coverage 90% is considered good for a large, complex chip Production chip tester: 5
6 Developing a Functional Test Bench Develop a set of functional test benches using simple example: full adder Move towards fully automated model: 6
7 Device Under Test: Full-Adder A B cin sum cout 7
8 TB1: A Simple Test Bench 8
9 TB1: Visually Check Simulation Result 9
10 Assert Statement (revisited) assert boolean-expression [report string-expression] [severity expression]; The boolean-expression is evaluated and if the expression is false, the string-expression specified in report statement is displayed in the simulator window The severity statement then indicates to the simulator what action should be taken in response to the assertion failure. Severity: NOTE, WARNING, ERROR, FAILURE. 10
11 TB2: Using Assert Statement 11
12 TB2: Using Assert no errors 12
13 TB2: Using Assert Introduce error Use or instead of xor 13
14 TB3: Using Test Vector Array 14
15 TB3: Using Test Vector Array no errors 15
16 Reading and Writing Files TEXTIO Package A file is a class of object in VHDL (like signal, variable & constant). Each file has a type. The standard VHDL library contains the TEXTIO package which provides a set of file types, data types and I/O procedures for simple text I/O to and from files To make the package visible: use std.textio.all; TEXTIO read and write procedures are available for predefined types bit, bit_vector, character and string The ieee.std_logic_textio package overloads these procedures to support std_logic and std_logic_vector 16
17 New Types: Declaring and Opening Files text -- a file of character strings line a string (to or from a text file) Example Declarations file testfile: text; -- testfile is file handle variable L: line; -- L is a single line buffer Procedure to open a file: file_open(file_handle, filename, open_kind); where open_kind is one of (read_mode, write_mode or append_mode), for example: file_open (testfile, my_file.txt, read_mode); 17
18 Reading Files readline ( file_handle, line_buffer); Read one line from "text" file file_handle into line_buffer read(line_buffer, value); Read one item from line_buffer into variable value. Variable value can be bit, bit_vector, character or string Variable can also be std_logic or std_logic vector if IEEE std_logic_textio package is used. endfile(file_handle); --returns boolean (TRUE if at EOF) For example: variable buf_in: line; variable bit0: std_logic; begin readline(my_file, buf_in); read(buf_in, bit0); 18
19 TB4: Reading Vectors from File 19
20 Writing Files writeline ( file_handle, line_buffer); Write one line to "text" file file_handle from line_buffer write(line_buffer, value); Write variable value into line_buffer Variable value can be bit, bit_vector, character or string Variable can also be std_logic or std_logic vector if IEEE std_logic_textio package is used. For example: variable buf_out: line; variable abc : bit_vector (3 downto 0); begin write(buf_out, abc is ); write(buf_out, abc); writeline(my_file, buf_in); 20
21 TB5: Writing Results to File 21
22 TB5: Writing Results to File (2) 22
23 TB5: Writing Results to File (2) 23
24 TB5: Writing Results with OR/XOR error 24
25 Example: Writing Test Vectors Write a set of test vectors to test the following 2-bit binary counter: res ck uuuu dddd Q 0 X X count up 1 0 count dn up dn ck count2 QQ 1 QQ 0 res 25
Lecture 3 Introduction to VHDL
CPE 487: Digital System Design Spring 2018 Lecture 3 Introduction to VHDL Bryan Ackland Department of Electrical and Computer Engineering Stevens Institute of Technology Hoboken, NJ 07030 1 Managing Design
Lecture 10 Subprograms & Overloading
CPE 487: Digital System Design Spring 2018 Lecture 10 Subprograms & Overloading Bryan Ackland Department of Electrical and Computer Engineering Stevens Institute of Technology Hoboken, NJ 07030 1 Subprograms
Introduction to VHDL. Main language concepts
Introduction to VHDL VHSIC (Very High Speed Integrated Circuit) Hardware Description Language Current standard is IEEE 1076-1993 (VHDL-93). Some tools still only support VHDL-87. Tools used in the lab
Concurrent Signal Assignment Statements (CSAs)
Concurrent Signal Assignment Statements (CSAs) Digital systems operate with concurrent signals Signals are assigned values at a specific point in time. VHDL uses signal assignment statements Specify value
Digital Design Using VHDL Using Xilinx s Tool for Synthesis and ModelSim for Verification
Digital Design Using VHDL Using Xilinx s Tool for Synthesis and ModelSim for Verification Ahmed Abu-Hajar, Ph.D. abuhajar@digitavid.net Digitavid, Inc San Jose, CA Session One Outline Introducing VHDL
Abi Farsoni, Department of Nuclear Engineering and Radiation Health Physics, Oregon State University
Hardware description language (HDL) Intended to describe circuits textually, for a computer to read Evolved starting in the 1970s and 1980s Popular languages today include: VHDL Defined in 1980s by U.S.
Lecture 12 VHDL Synthesis
CPE 487: Digital System Design Spring 2018 Lecture 12 VHDL Synthesis Bryan Ackland Department of Electrical and Computer Engineering Stevens Institute of Technology Hoboken, NJ 07030 1 What is Synthesis?
Hardware Description Language VHDL (1) Introduction
Hardware Description Language VHDL (1) Introduction Digital Radiation Measurement and Spectroscopy NE/RHP 537 Introduction Hardware description language (HDL) Intended to describe circuits textually, for
ELCT 501: Digital System Design
ELCT 501: Digital System Lecture 4: CAD tools (Continued) Dr. Mohamed Abd El Ghany, Basic VHDL Concept Via an Example Problem: write VHDL code for 1-bit adder 4-bit adder 2 1-bit adder Inputs: A (1 bit)
LECTURE Simulator 2: Textio, Wait, Clocks, and Test Benches
EECS 318 CAD Computer Aided Design LECTURE Simulator 2: Textio, Wait, Clocks, and Test Benches Instructor: Francis G. Wolff wolff@eecs.cwru.edu Case Western Reserve University This presentation uses powerpoint
Basic Language Concepts
Basic Language Concepts Sudhakar Yalamanchili, Georgia Institute of Technology ECE 4170 (1) Describing Design Entities a sum b carry Primary programming abstraction is a design entity Register, logic block,
VHDL Simulation. Testbench Design
VHDL Simulation Testbench Design The Test Bench Concept Elements of a VHDL/Verilog testbench Unit Under Test (UUT) or Device Under Test (DUT) instantiate one or more UUT s Stimulus of UUT inputs algorithmic
Test Bench. Top Level Model Test Bench MUT
A test bench is usually a simulation-only model used for design verification of some other model(s) to be synthesized. A test bench is usually easier to develop than a force file when verifying the proper
Digital Systems Design
Digital Systems Design Review of Combinatorial Circuit Building Blocks: VHDL for Combinational Circuits Dr. D. J. Jackson Lecture 2-1 Introduction to VHDL Designer writes a logic circuit description in
Review. LIBRARY list of library names; USE library.package.object; ENTITY entity_name IS generic declarations PORT ( signal_name(s): mode signal_type;
LIBRARY list of library names; USE library.package.object; Review ENTITY entity_name IS generic declarations PORT ( signal_name(s): mode signal_type; signal_name(s) : mode signal_type); END ENTITY entity_name;
ECE 368 CAD-Based Logic Design Shantanu Dutt. Lecture 11. File I/O and Textio in VHDL (courtesy of Karam Chatha, ASU)
ECE 368 CAD-Based Logic Design Shantanu Dutt Lecture 11 File I/O and Textio in VHDL (courtesy of Karam Chatha, ASU) Files In all the testbenches we created so far, the test stimuli were coded inside each
Outline CPE 626. Advanced VLSI Design. Lecture 4: VHDL Recapitulation (Part 2) Signals. Variables. Constants. Variables vs.
CPE 626 Lecture 4: VHDL Recapitulation (Part 2) Aleksandar Milenkovic http://www.ece.uah.edu/~milenka http://www.ece.uah.edu/~milenka/cpe626-04f/ milenka@ece.uah.edu Assistant Professor Electrical and
Digitaalsüsteemide disain
IAY 0600 Digitaalsüsteemide disain VHDL discussion Verification: Testbenches Design verification We want to verify that our design is correct before the target PLD is programmed. The process performed
1. Defining and capturing the design of a system. 2. Cost Limitations (low profit margin must sell millions)
What is an Embedded System? A type of computer system ECEN 4856: Embedded System Design Lecture 2: Embedded System Standards Traditional Definitions Limited in hardware and software vs the PC Designed
EEL 4783: Hardware/Software Co-design with FPGAs
EEL 4783: Hardware/Software Co-design with FPGAs Lecture 9: Short Introduction to VHDL* Prof. Mingjie Lin * Beased on notes of Turfts lecture 1 What does HDL stand for? HDL is short for Hardware Description
Outline. CPE/EE 422/522 Advanced Logic Design L15. Files. Files
Outline CPE/EE 422/522 Advanced Logic Design L15 Electrical and Computer Engineering University of Alabama in Huntsville VHDL What we know (additional topics) Attributes Transport and Inertial Delays Operator
COE 405 Design Methodology Based on VHDL
COE 405 Design Methodology Based on VHDL Dr. Aiman H. El-Maleh Computer Engineering Department King Fahd University of Petroleum & Minerals Outline Elements of VHDL Top-Down Design Top-Down Design with
VHDL/Verilog Simulation. Testbench Design
VHDL/Verilog Simulation Testbench Design The Test Bench Concept Elements of a VHDL/Verilog testbench Unit Under Test (UUT) or Device Under Test (DUT) instantiate one or more UUT s Stimulus of UUT inputs
COE 405, Term 062. Design & Modeling of Digital Systems. HW# 1 Solution. Due date: Wednesday, March. 14
COE 405, Term 062 Design & Modeling of Digital Systems HW# 1 Solution Due date: Wednesday, March. 14 Q.1. Consider the 4-bit carry-look-ahead adder (CLA) block shown below: A 3 -A 0 B 3 -B 0 C 3 4-bit
Hardware Modeling. VHDL Basics. ECS Group, TU Wien
Hardware Modeling VHDL Basics ECS Group, TU Wien VHDL Basics 2 Parts of a Design Unit Entity Architecture Configuration Package Package Package Body Library How to create a Design Unit? Interface to environment
EE261: Intro to Digital Design
2014 EE261: Intro to Digital Design Project 3: Four Bit Full Adder Abstract: This report serves to teach us, the students, about modeling logic and gives a chance to apply concepts from the course to a
Lecture 5: State Machines, Arrays, Loops. EE 3610 Digital Systems
EE 3610: Digital Systems 1 Lecture 5: State Machines, Arrays, Loops BCD to Excess-3 (XS 3 ) Code Converter Example: Fig. 2-53 2 Easier to use one type of code (e.g. XS 3 ) over the other type (e.g. BCD)
CSCI Lab 3. VHDL Syntax. Due: Tuesday, week6 Submit to: \\fs2\csci250\lab-3\
![CSCI Lab 3. VHDL Syntax. Due: Tuesday, week6 Submit to: \\fs2\csci250\lab-3\](/thumbs/74/70459415.jpg "CSCI Lab 3. VHDL Syntax. Due: Tuesday, week6 Submit to: \\fs2\csci250\lab-3\")
CSCI 250 - Lab 3 VHDL Syntax Due: Tuesday, week6 Submit to: \\fs2\csci250\lab-3\ Objectives 1. Learn VHDL Valid Names 2. Learn the presentation of Assignment and Comments 3. Learn Modes, Types, Array,
TKT-1212 Digitaalijärjestelmien toteutus. Lecture 7: VHDL Testbenches Ari Kulmala, Erno Salminen 2008
TKT-1212 Digitaalijärjestelmien toteutus Lecture 7: VHDL Testbenches Ari Kulmala, Erno Salminen 2008 Contents Purpose of test benches Structure of simple test bench Side note about delay modeling in VHDL
VHDL for Complex Designs
ELEC 379 : DESIGN OF DIGITAL AND MICROCOMPUTER SYSTEMS 1998/99 WINTER SESSION, TERM 2 VHDL for Complex Designs This lecture covers VHDL features that are useful when designing complex logic circuits. After
CprE 583 Reconfigurable Computing
Recap Moore FSM Example CprE / ComS 583 Reconfigurable Computing Moore FSM that recognizes sequence 10 0 1 0 1 S0 / 0 S1 / 0 1 S2 / 1 Prof. Joseph Zambreno Department of Electrical and Computer Engineering
CCE 3202 Advanced Digital System Design
CCE 3202 Advanced Digital System Design Lab Exercise #2 Introduction You will use Xilinx Webpack v9.1 to allow the synthesis and creation of VHDLbased designs. This lab will outline the steps necessary
Getting Started with Xilinx WebPack 13.1
Getting Started with Xilinx WebPack 13.1 B. Ackland June 2011 (Adapted from S. Tewksbury notes WebPack 7.1) This tutorial is designed to help you to become familiar with the operation of the WebPack software
VHDL Testbench Design. Textbook chapters 2.19, , 9.5
VHDL Testbench Design Textbook chapters 2.19, 4.10-4.12, 9.5 The Test Bench Concept Elements of a VHDL/Verilog testbench Unit Under Test (UUT) or Device Under Test (DUT) instantiate one or more UUT s Stimulus
Lecture 1: VHDL Quick Start. Digital Systems Design. Fall 10, Dec 17 Lecture 1 1
Lecture 1: VHDL Quick Start Digital Systems Design Fall 10, Dec 17 Lecture 1 1 Objective Quick introduction to VHDL basic language concepts basic design methodology Use The Student s Guide to VHDL or The
Review of Digital Design with VHDL
Review of Digital Design with VHDL Digital World Digital world is a world of 0 and 1 Each binary digit is called a bit Eight consecutive bits are called a byte Hexadecimal (base 16) representation for
VHDL Testbench. Test Bench Syntax. VHDL Testbench Tutorial 1. Contents
VHDL Testbench Tutorial 1 Contents 1 VHDL Testbench 2 Test Bench Syntax 3 Testbench Example: VHDL Code for Up Down Binary Counter 4 VHDL Testbench code for up down binary counter 5 Testbench Waveform for
Experiment 8 Introduction to VHDL
Experiment 8 Introduction to VHDL Objectives: Upon completion of this laboratory exercise, you should be able to: Enter a simple combinational logic circuit in VHDL using the Quartus II Text Editor. Assign
Test Benches - Module 8
Test Benches Module 8 Jim Duckworth, WPI 1 Overview We have concentrated on VHDL for synthesis Can also use VHDL as a test language Very important to conduct comprehensive verification on your design To
VHDL Testbench VHDL Testbench NO Synthesis Test Vectors Input Vector Output Vector Expected Vector UUT : Unit Under Test Clock Generator Error Report Utility 1 Library : STD Library for Testbench use std.standard.all;
Summary of FPGA & VHDL
FYS4220/9220 Summary of FPGA & VHDL Lecture #6 Jan Kenneth Bekkeng, University of Oslo - Department of Physics 16.11.2011 Curriculum (VHDL & FPGA part) Curriculum (Syllabus) defined by: Lectures Lecture6:
Active-HDL. Getting Started
Active-HDL Getting Started Active-HDL is an integrated environment designed for development of VHDL designs. The core of the system is a VHDL simulator. Along with debugging and design entry tools, it
Digital Design Using VHDL Using Xilinx s Tool for Synthesis and ModelSim for Verification Part II
Digital Design Using VHDL Using Xilinx s Tool for Synthesis and ModelSim for Verification Part II Ahmed Abu-Hajar, Ph.D. abuhajar@digitavid.net Digitavid, Inc San Jose, CA VHDL Lexical Description Code
Chapter 6 Combinational-Circuit Building Blocks
Chapter 6 Combinational-Circuit Building Blocks Commonly used combinational building blocks in design of large circuits: Multiplexers Decoders Encoders Comparators Arithmetic circuits Multiplexers A multiplexer
VHDL Structural Modeling II
VHDL Structural Modeling II ECE-331, Digital Design Prof. Hintz Electrical and Computer Engineering 5/7/2001 331_13 1 Ports and Their Usage Port Modes in reads a signal out writes a signal inout reads
Tutorial 4 HDL. Outline VHDL PROCESS. Modeling Combinational Logic. Structural Description Instantiation and Interconnection Hierarchy
CS3: Hardware Lab Tutorial 4 HDL Outline VHDL basic language concepts basic design methodology Examples A. Sahu Dept of Comp. Sc. & Engg. Indian Institute of Technology Guwahati i i i3 i4 Modeling Combinational
VHDL. ELEC 418 Advanced Digital Systems Dr. Ron Hayne. Images Courtesy of Cengage Learning
VHDL ELEC 418 Advanced Digital Systems Dr. Ron Hayne Images Courtesy of Cengage Learning Design Flow 418_02 2 VHDL Modules 418_02 3 VHDL Libraries library IEEE; use IEEE.std_logic_1164.all; std_logic Single-bit
Introduction to VHDL #1
ECE 3220 Digital Design with VHDL Introduction to VHDL #1 Lecture 3 Introduction to VHDL The two Hardware Description Languages that are most often used in industry are: n VHDL n Verilog you will learn
CPE/EE 422/522. Chapter 8 - Additional Topics in VHDL. Dr. Rhonda Kay Gaede UAH. 8.1 Attributes - Signal Attributes that return a value
CPE/EE 422/522 Chapter 8 - Additional Topics in VHDL Dr. Rhonda Kay Gaede UAH 1 8.1 Attributes - Signal Attributes that return a value A event true if a has just occurred A active true if A has, even if
Lecture 5: Aldec Active-HDL Simulator
Lecture 5: Aldec Active-HDL Simulator 1. Objective The objective of this tutorial is to introduce you to Aldec s Active-HDL 9.1 Student Edition simulator by performing the following tasks on a 4-bit adder
JUNE, JULY 2013 Fundamentals of HDL (10EC45) PART A
JUNE, JULY 2013 Fundamentals of HDL (10EC45) Time: 3hrs Max Marks:100 Note: Answer FIVE full questions, selecting at least TWO questions from each part. PART A Q1.a. Describe VHDL scalar data types with
Contents. Appendix D VHDL Summary Page 1 of 23
Appendix D VHDL Summary Page 1 of 23 Contents Appendix D VHDL Summary...2 D.1 Basic Language Elements...2 D.1.1 Comments...2 D.1.2 Identifiers...2 D.1.3 Data Objects...2 D.1.4 Data Types...2 D.1.5 Data
Hardware Synthesis. References
Hardware Synthesis MidiaReshadi CE Department Science and research branch of Islamic Azad University Email: ce.srbiau@gmail.com 1 References 2 1 Chapter 1 Digital Design Using VHDL and PLDs 3 Some Definitions
C-Based Hardware Design
LECTURE 6 In this lecture we will introduce: The VHDL Language and its benefits. The VHDL entity Concurrent and Sequential constructs Structural design. Hierarchy Packages Various architectures Examples
VHDL 2 Combinational Logic Circuits. Reference: Roth/John Text: Chapter 2
VHDL 2 Combinational Logic Circuits Reference: Roth/John Text: Chapter 2 Combinational logic -- Behavior can be specified as concurrent signal assignments -- These model concurrent operation of hardware
What Is VHDL? VHSIC (Very High Speed Integrated Circuit) Hardware Description Language IEEE 1076 standard (1987, 1993)
What Is VHDL? VHSIC (Very High Speed Integrated Circuit) Hardware Description Language IEEE 1076 standard (1987, 1993) Only possible to synthesize logic from a subset of VHDL Subset varies according to
Inthis lecture we will cover the following material:
Lecture #8 Inthis lecture we will cover the following material: The standard package, The std_logic_1164 Concordia Objects & data Types (Signals, Variables, Constants, Literals, Character) Types and Subtypes
CDA 4253 FPGA System Design VHDL Testbench Development. Hao Zheng Comp. Sci & Eng USF
CDA 4253 FPGA System Design VHDL Testbench Development Hao Zheng Comp. Sci & Eng USF art-4- > 70% projects spent > 40% time in verification 2 Validation, Verification, and Testing Validation: Does the
Lecture 7. Standard ICs FPGA (Field Programmable Gate Array) VHDL (Very-high-speed integrated circuits. Hardware Description Language)
Standard ICs FPGA (Field Programmable Gate Array) VHDL (Very-high-speed integrated circuits Hardware Description Language) 1 Standard ICs PLD: Programmable Logic Device CPLD: Complex PLD FPGA: Field Programmable
HIERARCHICAL DESIGN. RTL Hardware Design by P. Chu. Chapter 13 1
HIERARCHICAL DESIGN Chapter 13 1 Outline 1. Introduction 2. Components 3. Generics 4. Configuration 5. Other supporting constructs Chapter 13 2 1. Introduction How to deal with 1M gates or more? Hierarchical
Outline HIERARCHICAL DESIGN. 1. Introduction. Benefits of hierarchical design
Outline HIERARCHICAL DESIGN 1. Introduction 2. Components 3. Generics 4. Configuration 5. Other supporting constructs Chapter 13 1 Chapter 13 2 1. Introduction How to deal with 1M gates or more? Hierarchical
Logic and Computer Design Fundamentals VHDL. Part 1 Chapter 4 Basics and Constructs
Logic and Computer Design Fundamentals VHDL Part Chapter 4 Basics and Constructs Charles Kime & Thomas Kaminski 24 Pearson Education, Inc. Terms of Use (Hyperlinks are active in View Show mode) Overview
VHDL Objects. Lecture 8: VHDL (2) Variables. VHDL Objects - Constant. Files. EE3109 Gopi K. Manne Fall 2007
Lecture 8: VHDL (2) VHDL Objects Four types of objects in VHDL Constants Variables Computer Aided Digital Design EE3109 Gopi K. Manne Fall 2007 Signals Files The scope of an object is as follows : Objects
Hardware Modeling. VHDL Syntax. Vienna University of Technology Department of Computer Engineering ECS Group
Hardware Modeling VHDL Syntax Vienna University of Technology Department of Computer Engineering ECS Group Contents Identifiers Types & Attributes Operators Sequential Statements Subroutines 2 Identifiers
IE1204 Digital Design L7: Combinational circuits, Introduction to VHDL
IE24 Digital Design L7: Combinational circuits, Introduction to VHDL Elena Dubrova KTH / ICT / ES dubrova@kth.se This lecture BV 38-339, 6-65, 28-29,34-365 IE24 Digital Design, HT 24 2 The multiplexer
Introduction to VHDL. Yvonne Avilés Colaboration: Irvin Ortiz Flores Rapid System Prototyping Laboratory (RASP) University of Puerto Rico at Mayaguez
Introduction to VHDL Yvonne Avilés Colaboration: Irvin Ortiz Flores Rapid System Prototyping Laboratory (RASP) University of Puerto Rico at Mayaguez What is VHDL? Very High Speed Integrated Circuit Hardware
LECTURE 4: The VHDL N-bit Adder
EECS 317 Computer Design LECTURE 4: The VHDL N-bit Adder Instructor: Francis G. Wolff wolff@eecs.cwru.edu Case Western Reserve University Review: N-Bit Ripple-Carry Adder Hierarchical design: 2-bit adder
EECE 353: Digital Systems Design Lecture 10: Datapath Circuits
EECE 353: Digital Systems Design Lecture 10: Datapath Circuits Cristian Grecu grecuc@ece.ubc.ca Course web site: http://courses.ece.ubc.ca/353 Introduction to lecture 10 Large digital systems are more
ECE U530 Digital Hardware Synthesis. Course Accounts and Tools
ECE U530 Digital Hardware Synthesis Prof. Miriam Leeser mel@coe.neu.edu Sept 13, 2006 Lecture 3: Basic VHDL constructs Signals, Variables, Constants VHDL Simulator and Test benches Types Reading: Ashenden
TKT-1212 Digitaalijärjestelmien toteutus
TKT-1212 Digitaalijärjestelmien toteutus Lecture 7: VHDL Testbenches Erno Salminen 2012 Design under test Testbench Contents Purpose of test benches Structure of simple test bench Side note about delay
VHDL- VHDL-3. Vsys. maxplus2. Vsys. d:\uoo. vsystem.ini work
VHDL- VHDL-3 Vsys TextIO maxplus2 Vsys Vsys d:\uoo mem_tb.vhd mem_tb.vec Vsys d:\uoo vsystem.ini work d:\uoo vsystem.ini [library] std = c:/vsystem/std IEEE = c:/vsystem/ieee SIMPRIM = D:/xilinx/vhdl/src/simprims/work
Design units can NOT be split across different files
Skeleton of a Basic VHDL Program This slide set covers the components to a basic VHDL program, including lexical elements, program format, data types and operators A VHDL program consists of a collection
Outline CPE 626. Advanced VLSI Design. Lecture 3: VHDL Recapitulation. Intro to VHDL. Intro to VHDL. Entity-Architecture Pair
Outline CPE 626 Lecture 3: VHDL Recapitulation Aleksandar Milenkovic http://www.ece.uah.edu/~milenka http://www.ece.uah.edu/~milenka/cpe626-04f/ milenka@ece.uah.edu Assistant Professor Electrical and Computer
Digital Design Laboratory Lecture 2
ECE 280 / CSE 280 Digital Design Laboratory Lecture 2 Adder Design Basic building block is a full adder Chained together as a ripple carry adder Carry lookahead adder is an other option Propagate and generate
CCE 3202 Advanced Digital System Design
CCE 3202 Advanced Digital System Design Lab Exercise #2 This lab exercise will show you how to create, synthesize, and test a 3-bit ripple counter. A ripple counter is simply a circuit that outputs the
ECE 545 Lecture 8. Data Flow Description of Combinational-Circuit Building Blocks. George Mason University
ECE 545 Lecture 8 Data Flow Description of Combinational-Circuit Building Blocks George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapter 7, Combinational Circuit Design:
The University of Alabama in Huntsville ECE Department CPE Midterm Exam February 26, 2003
The University of Alabama in Huntsville ECE Department CPE 526 01 Midterm Exam February 26, 2003 1. (20 points) Describe the following logic expression (A B D) + (A B C) + (B C ) with a structural VHDL
Hardware Description Languages. Modeling Complex Systems
Hardware Description Languages Modeling Complex Systems 1 Outline (Raising the Abstraction Level) The Process Statement if-then, if-then-else, if-then-elsif, case, while, for Sensitivity list Signals vs.
Declarations of Components and Entities are similar Components are virtual design entities entity OR_3 is
Reserved Words component OR_3 port (A,B,C: in bit; Z: out bit); end component ; Reserved Words Declarations of Components and Entities are similar Components are virtual design entities entity OR_3 is
BASIC VHDL LANGUAGE ELEMENTS AND SEMANTICS. Lecture 7 & 8 Dr. Tayab Din Memon
BASIC VHDL LANGUAGE ELEMENTS AND SEMANTICS Lecture 7 & 8 Dr. Tayab Din Memon Outline Data Objects Data Types Operators Attributes VHDL Data Types VHDL Data Objects Signal Constant Variable File VHDL Data
Hardware Description Languages (HDLs) Verilog
Hardware Description Languages (HDLs) Verilog Material from Mano & Ciletti book By Kurtulus KULLU Ankara University What are HDLs? A Hardware Description Language resembles a programming language specifically
ECOM 4311 Digital System Design using VHDL. Chapter 7
ECOM 4311 Digital System Design using VHDL Chapter 7 Introduction A design s functionality should be verified before its description is synthesized. A testbench is a program used to verify a design s functionality
Lattice VHDL Training
Lattice Part I February 2000 1 VHDL Basic Modeling Structure February 2000 2 VHDL Design Description VHDL language describes a digital system as a set of modular blocks. Each modular block is described
CMPT 250: Computer Architecture. Using LogicWorks 5. Tutorial Part 1. Somsubhra Sharangi
CMPT 250: Computer Architecture Using LogicWorks 5 Tutorial Part 1 Somsubhra Sharangi What is VHDL? A high level language to describe digital circuit Different that a programming language ( such as Java)
ECE 545 Lecture 7. Advanced Testbenches. Required reading. Simple Testbench. Advanced Testbench. Possible Sources of Expected Outputs
ECE 545 Lecture 7 Advanced Testbenches George Mason University Steps of the Design Process 1. Text description 2. Interface 3. Pseudocode 4. Block diagram of the Datapath 5. Interface with the division
ECE 2300 Digital Logic & Computer Organization. More Sequential Logic Verilog
ECE 2300 Digital Logic & Computer Organization Spring 2018 More Sequential Logic Verilog Lecture 7: 1 Announcements HW3 will be posted tonight Prelim 1 Thursday March 1, in class Coverage: Lectures 1~7
UNIT I Introduction to VHDL VHDL: - V -VHSIC, H - Hardware, D - Description, L Language Fundamental section of a basic VHDL code Library :
UNIT I Introduction to VHDL VHDL stands for very high-speed integrated circuit hardware description language. Which is one of the programming languages used to model a digital system by dataflow, behavioral
ECE 545 Lecture 7. Advanced Testbenches. George Mason University
ECE 545 Lecture 7 Advanced Testbenches George Mason University Steps of the Design Process 1. Text description 2. Interface 3. Pseudocode 4. Block diagram of the Datapath 5. Interface with the division
Subprograms, Packages, and Libraries
Subprograms, Packages, and Libraries Sudhakar Yalamanchili, Georgia Institute of Technology ECE 4170 (1) function rising_edge (signal clock: std_logic) return boolean is declarative region: declare variables
Design a 4 bit-adder. Then design a 4-7 decoder to show the outputs. Output Sum(4 bits) Adder. Output carry(1 bit)
Csc 343 Lab 2 Sep 28. 07 Objective: Design a 4 bit-adder. Then design a 4-7 decoder to show the outputs. Structure: Input A (4 bits) Input B (4 bit) Adder Output Sum(4 bits) Output carry(1 bit) input cin
Outline. CPE/EE 422/522 Advanced Logic Design L05. Review: General Model of Moore Sequential Machine. Review: Mealy Sequential Networks.
Outline CPE/EE 422/522 Advanced Logic Design L05 Electrical and Computer Engineering University of Alabama in Huntsville What we know Combinational Networks Sequential Networks: Basic Building Blocks,
EECE-4740/5740 Advanced VHDL and FPGA Design. Lecture 3 Concurrent and sequential statements
EECE-4740/5740 Advanced VHDL and FPGA Design Lecture 3 Concurrent and sequential statements Cristinel Ababei Marquette University Department of Electrical and Computer Engineering Overview Components hierarchy
VHDL: A Crash Course
VHDL: A Crash Course Dr. Manuel Jiménez With contributions by: Irvin Ortiz Flores Electrical and Computer Engineering Department University of Puerto Rico - Mayaguez Outline Background Program Structure
CPE 626 Advanced VLSI Design Lecture 6: VHDL Synthesis. Register File: An Example. Register File: An Example (cont d) Aleksandar Milenkovic
CPE 626 Lecture 6: VHDL Synthesis Aleksandar Milenkovic http://www.ece.uah.edu/~milenka http://www.ece.uah.edu/~milenka/cpe626-04f/ milenka@ece.uah.edu Assistant Professor Electrical and Computer Engineering
ECEU530. Schedule. ECE U530 Digital Hardware Synthesis. Datapath for the Calculator (HW 5) HW 5 Datapath Entity
ECE U530 Digital Hardware Synthesis Prof. Miriam Leeser mel@coe.neu.edu November 6, 2006 Classes November 6 and 8 are in 429 Dana! Lecture 15: Homework 5: Datapath How to write a testbench for synchronous
Generatore di parità. LIBRARY ieee; USE ieee.std_logic_1164.all ; ENTITY xor2 IS PORT( A, B : in std_logic ; Y : out std_logic ) ; END xor2 ;
LIBRARY ieee; USE ieee.std_logic_1164.all ; ENTITY xor2 IS PORT( A, B : in std_logic ; Y : out std_logic ) ; END xor2 ; ARCHITECTURE arch1 OF Xor2 IS BEGIN Y
ENGIN 241 Digital Systems with Lab
ENGIN 241 Digital Systems with Lab (4) Dr. Honggang Zhang Engineering Department University of Massachusetts Boston 1 Introduction Hardware description language (HDL): Specifies logic function only Computer-aided
ECE 545 Lecture 5. Data Flow Modeling in VHDL. George Mason University
ECE 545 Lecture 5 Data Flow Modeling in VHDL George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapter 4, Concurrent Signal Assignment Statements of VHDL 2 Types of VHDL Description
Sequential VHDL. Katarzyna Radecka. DSD COEN 313
Sequential VHDL Katarzyna Radecka DSD COEN 313 kasiar@ece.concordia.ca Overview Process Sensitivity List Wait Statements If Statements Case Statements Loop Statements Three Styles of VHDL Behavioral Structural
Embedded Systems CS - ES
Embedded Systems - 1 - REVIEW Hardware/System description languages VDHL VHDL-AMS SystemC TLM - 2 - VHDL REVIEW Main goal was modeling of digital circuits Modelling at various levels of abstraction Technology-independent