VHDL: Concurrent Coding vs. Sequen7al Coding. 1
|
|
|
- Kelley Cannon
- 5 years ago
- Views:
Transcription
1 VHDL: Concurrent Coding vs. Sequen7al Coding 1
2 Concurrent Coding Concurrent = parallel VHDL code is inherently concurrent Concurrent statements are adequate only to code at a very low level of abstrac7on Use concurrent coding with extreme modera7on (i.e. avoid it with rare excep7ons!!) In general, with concurrent code we can only build combina.onal logic circuits (the only excep7on is when guarded blocks are used) talarico@gonzaga.edu 2
3 Concurrent statements simple WHEN (WHEN/ELSE) selected WHEN (WITH/SELECT/WHEN) operators (NOT, AND, NAND, OR, NOR, XOR, NXOR, +, -, etc.) generate block (simple and guarded) I can t remember how to use them and I do not want to know!!! But if you care: see Pedroni, Circuit Design and Simula7on with VHDL, 2/e, MIT Press for examples talarico@gonzaga.edu 3
4 Example: mux using operators 4
5 Example: Mux using WHEN/ELSE 5
6 Example: Mux using WITH/SELECT/WHEN 6
7 simple WHEN vs. select WHEN WHEN value can take up to three forms: 7
8 Sequen7al Coding Can be used for building both combina7onal and sequen7al logic circuits PROCESS FUNCTION PROCEDURE Any sec7on of code inside a PROCESS, FUNCTION, or PROCEDURE is executed sequen7ally. However, as whole any of these sec7ons is s7ll concurrent with any other statement outside it * more about them when we switch our focus to testbenches (and System- Level Design) * For now the focus is circuit design (synthesizable coding) talarico@gonzaga.edu 8
9 IF WAIT CASE LOOP Statements allowed only in sequen7al coding 9
10 PROCESS A process is executed every 7me a signal in the sensi7vity list changes (or the condi7on related to WAIT is full filled) Do not ini7alize sythesizable code!! talarico@gonzaga.edu 10
11 VARIABLE Objects allowed only in sequen7al coding Variables can never be global so their value cannot be passed out directly Variables can be declared in a PROCESS, FUNCTION or PROCEDURE Signals can be global Signals can be declared in a PACKAGE, ENTITY or ARCHITECTURE talarico@gonzaga.edu 11
12 variable vs. signal New value updated immediately The value is always local := New value updated aner the conclusion of the present run of the PROCESS (FUNCTION or PROCEDURE) The value can be global <= 12
13 IF statement 13
14 Example: Counter construc7ve cri7cism: cnt_v is a way beqer name for the variable temp rtl rtl talarico@gonzaga.edu 14
15 Example: Shin Register rtl Why d is not in the sensi7vity list? concurrent execu7on rtl concurrent statement talarico@gonzaga.edu 15
16 WAIT statement When WAIT is employed the PROCESS cannot have a sensi7vity list WAIT FOR is intended for simula7on only (NOT synthesizable) The use of WAIT statements is highly discouraged when wri7ng synthesizable code (but it is very useful when wri7ng TBs) talarico@gonzaga.edu 16
17 Examples: WAIT statement NOT RECOMMENDED -- Recommended Coding Style! PROCESS (clk) BEGIN IF (clk= 1 AND clk EVENT) THEN! IF (rst= 1 ) THEN output => (others => 0 ); END IF;! output <= input; END IF;! END PROCESS;! NOT RECOMMENDED -- Recommended Coding Style! PROCESS (clk,rst) BEGIN! IF (rst= 1 ) THEN output => (others => 0 ); ELSIF (clk= 1 AND clk EVENT) THEN! output <= input; END IF;! END PROCESS;! talarico@gonzaga.edu 17
18 WAIT Statement: Waveform Genera7on NOTE: the perpetual nature of a process without sensi.vity list talarico@gonzaga.edu 18
19 CASE statement y= 1111 ;! Useful KEYWORD to use when no ac7on take place: NULL WHEN value can take up to 3 forms: talarico@gonzaga.edu 19
20 mul.plexer CASE vs. IF Priority encoder Think Hardware!!! PROCESS(sel,a,b,c,d)! BEGIN! CASE sel IS WHEN 00 => y <= a; WHEN 01 => y <= b;! WHEN 10 => y <= c; WHEN others => y <= d;! END CASE;! END PROCESS;! sel(1) sel(0) PROCESS(sel,a,b,c,d)! BEGIN! IF sel= 00 THEN y <= a; ELSIF sel= 01 THEN y <= b;! ELSIF sel= 10 THEN y <= c; ELSE y <= d; END IF; END PROCESS;! c and d are late arriving signals!! a 1! b! y c 0! d 1!! 0! & 1!! 0! & & talarico@gonzaga.edu 20
21 LOOP Statement FOR/LOOP: the loop is repeated a fixed number of 7mes SYNTHESIZABLE WHILE/LOOP: the loop is repeated un7l a condi7on no longer hold NOT SYNTHESIZABLE EXIT: used to end a loop NOT SYNTHESIZABLE NEXT: used for skipping loop steps NOT SYNTHESIZABLE talarico@gonzaga.edu 21
22 Loop examples FOR i IN 0 TO 5 LOOP! (statements) END LOOP;! WHILE (i < 10) LOOP! (statements) END LOOP;! talarico@gonzaga.edu 22
23 Clocking Issues BAD Clocking: It is not possible to synthesize code that contain assignments on both transi7ons of the clock signal, in the same process. In addi7on, in this example the signal counter is assumed to be mul7ply driven BAD Clocking: the aqribute EVENT cannot be used by itself. It must be Related to a test condi7on. Working with both edges of a clock is a highly unreliable prac7ce!!! Duty Cycle may not be 50% talarico@gonzaga.edu 23
24 Clocking Issues: Solu7on Work with a clock twice the speed of the original clock and use only one clock edge ! PROCESS (clkby2) BEGIN IF (clkby2= 1 AND clkby2 EVENT) then counter <= counter + 1;! END IF; END PROCESS! ! talarico@gonzaga.edu 24
25 Signals A VHDL signal models a physical signal (you can think of it like a piece of wire) A signal is a sequence of 7me- value pairs A signal assignment takes effect only aner a certain delay (the smallest possible delay is called a delta 7me ). talarico@gonzaga.edu 25
26 Variables All assignment to variables are scheduled (takes effect) immediately. If a variable is assigned a value, the corresponding loca7on in memory is wriqen with the new value while destroying the old value. This effec7vely happen immediately so if the next execu7ng statement in the program uses the value of the variable, it is the new value that is used. talarico@gonzaga.edu 26
27 Signals vs. Variables Signals assignments are scheduled aner a certain delay δ Variables assignments happen immediately, there is no delay talarico@gonzaga.edu 27
28 PROCESS Behavior in a nutshell A process statement is a concurrent statement, but all statements contained in it are sequen7al statement (statements that executes serially, one aner another). The use of processes allows to raise the level of abstrac7on (support advanced language constructs) usable, makes your code more modular, more readable, and allows you to separate combina7onal logic from sequen7al logic. talarico@gonzaga.edu 28
29 PROCESS behavior in a nutshell All processes are executed once at start- up Aner start- up only dependencies between signal values and events on these signals determine process execu7on Signals behave differently from variables!!! talarico@gonzaga.edu 29
30 PROCESS behavior in a nutshell: The Sensi7vity List List of all signals the process is sensi7ve to. Sensi7ve means that a change in the value of these signals will cause the process to be invoked. talarico@gonzaga.edu 30
31 Combina7onal Logic (using processes) The sensi.vity list must be complete!!! 31
32 Combina7onal Logic: Effect of an Incomplete Sensi7vity List Obtained Behavior Desired Behavior 32
33 Combina7onal Logic: What to put in sensi7vity list? All signals you do a test on and all signals that are on the right side of an assignment. In other words all the signals you are reading in the value Don t read and write a signal at the same.me!!! talarico@gonzaga.edu 33
34 Combina7onal Logic: Bad coding example ( δ 7me issues) Reading and Wri7ng a signal at the same 7me talarico@gonzaga.edu 34
35 How to fix the bad coding example 35
36 Using Sequen7al coding for combina7onal Logic RULE 1. make sure all signals read in the process appear in the sensi7vity list Incomplete sensi.vity will result in the VHDL simula.on not matching the gate level behavior RULE 2. make sure all signals driven in the PROCESS are defined for all possible input combina7ons Incomplete specifica.on of the output signals causes the synthesis to infer latches RULE 3. Make sure no signal is driven by more than one PROCESS Failing RULE 3 causes Mul.ple drivers poten7al conflict talarico@gonzaga.edu 36
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.
VHDL: RTL Synthesis Basics. 1 of 59
VHDL: RTL Synthesis Basics 1 of 59 Goals To learn the basics of RTL synthesis. To be able to synthesize a digital system, given its VHDL model. To be able to relate VHDL code to its synthesized output.
Islamic University Gaza Engineering Faculty Department of Computer Engineering ECOM 4111: Digital Systems Design Lab. Lab # 5. Concurrent Statements
Islamic University Gaza Engineering Faculty Department of Computer Engineering ECOM 4111: Digital Systems Design Lab Lab # 5 Concurrent Statements October, 2015 Introduction VHDL code is inherently concurrent
VHDL: Code Structure. 1
VHDL: Code Structure talarico@gonzaga.edu 1 Mo:va:on for HDL- based design Standard Technology/vendor independent Portable and Reusable talarico@gonzaga.edu 2 Altera s Design Flow (RTL) RTL Generic Boolean
FPGA BASED SYSTEM DESIGN. Dr. Tayab Din Memon Lecture 9 & 10 : Combinational and Sequential Logic
FPGA BASED SYSTEM DESIGN Dr. Tayab Din Memon tayabuddin.memon@faculty.muet.edu.pk Lecture 9 & 10 : Combinational and Sequential Logic Combinational vs Sequential Logic Combinational logic output depends
Multi-valued Logic. Standard Logic IEEE 1164 Type std_ulogic is ( U, uninitialized
Multi-valued Logic Standard Logic IEEE 1164 Type std_ulogic is ( U, uninitialized X, unknown 0, logic 0 1, logic 1 Z, high impedance W, unknown L, logic 0 weak H, logic 1 weak - ); don t care Standard
VHDL for Synthesis. Course Description. Course Duration. Goals
VHDL for Synthesis Course Description This course provides all necessary theoretical and practical know how to write an efficient synthesizable HDL code through VHDL standard language. The course goes
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?
ECE 3401 Lecture 10. More on VHDL
ECE 3401 Lecture 10 More on VHDL Outline More on VHDL Some VHDL Basics Data Types Operators Delay Models VHDL for Simulation VHDL for Synthesis 1 Data Types Every signal has a type, type specifies possible
Lecture 9. VHDL, part IV. Hierarchical and parameterized design. Section 1 HIERARCHICAL DESIGN
Lecture 9 VHDL, part IV Hierarchical and parameterized design Section 1 HIERARCHICAL DESIGN 2 1 Dealing with Large Digital System Design 1. Apply hierarchy to the design At the highest level use larger
VHDL. VHDL History. Why VHDL? Introduction to Structured VLSI Design. Very High Speed Integrated Circuit (VHSIC) Hardware Description Language
VHDL Introduction to Structured VLSI Design VHDL I Very High Speed Integrated Circuit (VHSIC) Hardware Description Language Joachim Rodrigues A Technology Independent, Standard Hardware description Language
Synthesis from VHDL. Krzysztof Kuchcinski Department of Computer Science Lund Institute of Technology Sweden
Synthesis from VHDL Krzysztof Kuchcinski Krzysztof.Kuchcinski@cs.lth.se Department of Computer Science Lund Institute of Technology Sweden March 23, 2006 Kris Kuchcinski (LTH) Synthesis from VHDL March
VHDL simulation and synthesis
VHDL simulation and synthesis How we treat VHDL in this course You will not become an expert in VHDL after taking this course The goal is that you should learn how VHDL can be used for simulation and synthesis
Two HDLs used today VHDL. Why VHDL? Introduction to Structured VLSI Design
Two HDLs used today Introduction to Structured VLSI Design VHDL I VHDL and Verilog Syntax and ``appearance'' of the two languages are very different Capabilities and scopes are quite similar Both are industrial
Verilog Introduc/on Part 2. B39VS Systems project
Verilog Introduc/on Part 2 B39VS Systems project COMBINATIONAL LOGIC VERILOG: Synthesis - Combina/onal Logic Combina/on logic func/on can be expressed as: logic_output(t) = f(logic_inputs(t)) logic_inputs(t)
DIGITAL LOGIC DESIGN VHDL Coding for FPGAs Unit 3
DIGITAL LOGIC DESIGN VHDL Coding for FPGAs Unit 3 BEHAVIORAL DESCRIPTION Asynchronous processes (decoder, mux, encoder, etc): if-else, case, for-loop. Arithmetic expressions inside asynchronous processes.
DIGITAL LOGIC WITH VHDL (Fall 2013) Unit 3
DIGITAL LOGIC WITH VHDL (Fall 2013) Unit 3 BEHAVIORAL DESCRIPTION Asynchronous processes (decoder, mux, encoder, etc): if-else, case, for-loop. BEHAVIORAL DESCRIPTION (OR SEQUENTIAL) In this design style,
VHDL Modeling Behavior from Synthesis Perspective -Part B - EL 310 Erkay Savaş Sabancı University
VHDL Modeling Behavior from Synthesis Perspective -Part B - EL 310 Erkay Savaş Sabancı University 1 The Wait Statement Syntax wait until condition; Different forms wait until(clk event and clk = 1 ); wait
Synthesizable Verilog
Synthesizable Verilog Courtesy of Dr. Edwards@Columbia, and Dr. Franzon@NCSU http://csce.uark.edu +1 (479) 575-6043 yrpeng@uark.edu Design Methodology Structure and Function (Behavior) of a Design HDL
ECE Digital Engineering Laboratory. Designing for Synthesis
ECE 554 - Digital Engineering Laboratory Designing for Synthesis Below is a list of coding styles that might cause synthesis problems and/or inefficient design implementation. This is not an exhaustive
VHDL Sample Slides Rev Sample Slides from the 2-day and 4-day VHDL Training Courses
VHDL Sample Slides from the 2-day and 4-day VHDL Training Courses Rev. 4.7 VHDL 2011 TM Associates, Inc. 1-1 These sample slides are taken from the 4-day basic VHDL training course. They are from a variety
VHDL for FPGA Design. by : Mohamed Samy
VHDL for FPGA Design by : Mohamed Samy VHDL Vhdl is Case insensitive myvar = myvar = MYVAR IF = if = if Comments start with -- Comments can exist anywhere in the line Semi colon indicates the end of statements
Introduction to VHDL
Introduction to VHDL Agenda Introduce VHDL Basic VHDL constructs Implementing circuit functions Logic, Muxes Clocked Circuits Counters, Shifters State Machines FPGA design and implementation issues FPGA
Chapter 2 Basic Logic Circuits and VHDL Description
Chapter 2 Basic Logic Circuits and VHDL Description We cannot solve our problems with the same thinking we used when we created them. ----- Albert Einstein Like a C or C++ programmer don t apply the logic.
What is Verilog HDL? Lecture 1: Verilog HDL Introduction. Basic Design Methodology. What is VHDL? Requirements
What is Verilog HDL? Lecture 1: Verilog HDL Introduction Verilog Hardware Description Language(HDL)? A high-level computer language can model, represent and simulate digital design Hardware concurrency
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
!"#$%&&"'(')"*+"%,%-".#"'/"'.001$$"
!"#$%&&"'(')"*+"%,%-".#"'/"'.001$$"!!"#$%&'#()#*+"+#,-."/0110#230#4."50",+"+#)6# 6+-+#(.6+-0#)4475.8)60#0/#.65-0#230#9+**+"+# 2.48).-0#(.6+-0#! 2+"*5."5*:#,."/0110#;)**0! *),".6*:#-.99-0*0"5."+#2+660,.40"5)#;)*)2)#
Programming with HDLs
Programming with HDLs Paul Chow February 11, 2008 1 Introduction The purpose of this document is to encourage the proper approach or mindset for programming in a hardware description language (HDL), particularly
קורס VHDL for High Performance. VHDL
קורס VHDL for High Performance תיאור הקורס קורסזהמספקאתכלהידע התיאורטיוהמעשילכתיבתקודHDL. VHDL לסינתזה בעזרת שפת הסטנדרט הקורסמעמיקמאודומלמדאת הדרךהיעילהלכתיבתקודVHDL בכדילקבלאתמימושתכןהלוגי המדויק. הקורסמשלב
RTL Implementation. Introduction to Structured VLSI Design. Concurrent Statements and Processes. Combinational and Sequential Logic.
RTL Implementation 32 Introduction to Structured VLSI Design Recap on Processes, Signals, and Variables A Y Y=A*B+C B C 48 Joachim Rodrigues We have complete control (active chioice) over the registers:
EECS150 - Digital Design Lecture 5 - Verilog Logic Synthesis
EECS150 - Digital Design Lecture 5 - Verilog Logic Synthesis Jan 31, 2012 John Wawrzynek Spring 2012 EECS150 - Lec05-verilog_synth Page 1 Outline Quick review of essentials of state elements Finite State
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
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
FPGA Design Challenge :Techkriti 14 Digital Design using Verilog Part 1
FPGA Design Challenge :Techkriti 14 Digital Design using Verilog Part 1 Anurag Dwivedi Digital Design : Bottom Up Approach Basic Block - Gates Digital Design : Bottom Up Approach Gates -> Flip Flops Digital
Verilog for Synthesis Ing. Pullini Antonio
Verilog for Synthesis Ing. Pullini Antonio antonio.pullini@epfl.ch Outline Introduction to Verilog HDL Describing combinational logic Inference of basic combinational blocks Describing sequential circuits
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
Lab 7 (All Sections) Prelab: Introduction to Verilog
Lab 7 (All Sections) Prelab: Introduction to Verilog Name: Sign the following statement: On my honor, as an Aggie, I have neither given nor received unauthorized aid on this academic work 1 Objective The
Verilog introduction. Embedded and Ambient Systems Lab
Verilog introduction Embedded and Ambient Systems Lab Purpose of HDL languages Modeling hardware behavior Large part of these languages can only be used for simulation, not for hardware generation (synthesis)
Introduction to VHDL #3
ECE 322 Digital Design with VHDL Introduction to VHDL #3 Lecture 7 & 8 VHDL Modeling Styles VHDL Modeling Styles Dataflow Concurrent statements Structural Components and interconnects Behavioral (sequential)
VHDL. Chapter 7. Behavioral Modeling. Outline. Behavioral Modeling. Process Statement
Chapter 7 VHDL VHDL - Flaxer Eli Ch 7-1 Process Statement Outline Signal Assignment Statement Variable Assignment Statement Wait Statement If-Then-Else Statement Case Statement Null Statement Loop Statement
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
Sequential Statements
Sequential Statements Chapter 5 1 Outline 1. VHDL process 2. Sequential signal assignment statement 3. Variable assignment statement 4. If statement 5. Case statement 6. Simple for loop statement Chapter
The process. Sensitivity lists
The process process itself is a concurrent statement but the code inside the process is executed sequentially Process label (optional) Process declarative region Process body entity Test is, : in bit;
1 ST SUMMER SCHOOL: VHDL BOOTCAMP PISA, JULY 2013
MARIE CURIE IAPP: FAST TRACKER FOR HADRON COLLIDER EXPERIMENTS 1 ST SUMMER SCHOOL: VHDL BOOTCAMP PISA, JULY 2013 Introduction to VHDL Calliope-Louisa Sotiropoulou PhD Candidate/Researcher Aristotle University
EN2911X: Reconfigurable Computing Topic 02: Hardware Definition Languages
EN2911X: Reconfigurable Computing Topic 02: Hardware Definition Languages Professor Sherief Reda http://scale.engin.brown.edu School of Engineering Brown University Spring 2014 1 Introduction to Verilog
structure syntax different levels of abstraction
This and the next lectures are about Verilog HDL, which, together with another language VHDL, are the most popular hardware languages used in industry. Verilog is only a tool; this course is about digital
Here is a list of lecture objectives. They are provided for you to reflect on what you are supposed to learn, rather than an introduction to this
This and the next lectures are about Verilog HDL, which, together with another language VHDL, are the most popular hardware languages used in industry. Verilog is only a tool; this course is about digital
CS211 Digital Systems/Lab. Introduction to VHDL. Hyotaek Shim, Computer Architecture Laboratory
CS211 Digital Systems/Lab Introduction to VHDL Hyotaek Shim, Computer Architecture Laboratory Programmable Logic Device (PLD) 2/32 An electronic component used to build reconfigurable digital circuits
Overview. Ram vs Register. Register File. Introduction to Structured VLSI Design. Recap Operator Sharing FSMD Counters.
Overview Introduction to Structured VLSI Design VHDL V Recap Operator Sharing FSMD Counters Joachim Rodrigues Ram vs Register Register File RAM characteristics RAM cell designed at transistor level Cell
VHDL And Synthesis Review
VHDL And Synthesis Review VHDL In Detail Things that we will look at: Port and Types Arithmetic Operators Design styles for Synthesis VHDL Ports Four Different Types of Ports in: signal values are read-only
ECE 448 Lecture 3. Combinational-Circuit Building Blocks. Data Flow Modeling of Combinational Logic
ECE 448 Lecture 3 Combinational-Circuit Building Blocks Data Flow Modeling of Combinational Logic George Mason University Reading Required P. Chu, FPGA Prototyping by VHDL Examples Chapter 3, RT-level
ECE 448 Lecture 3. Combinational-Circuit Building Blocks. Data Flow Modeling of Combinational Logic
ECE 448 Lecture 3 Combinational-Circuit Building Blocks Data Flow Modeling of Combinational Logic George Mason University Reading Required P. Chu, FPGA Prototyping by VHDL Examples Chapter 3, RT-level
A Brief Introduction to Verilog Hardware Definition Language (HDL)
www.realdigital.org A Brief Introduction to Verilog Hardware Definition Language (HDL) Forward Verilog is a Hardware Description language (HDL) that is used to define the structure and/or behavior of digital
The Verilog Language COMS W Prof. Stephen A. Edwards Fall 2002 Columbia University Department of Computer Science
The Verilog Language COMS W4995-02 Prof. Stephen A. Edwards Fall 2002 Columbia University Department of Computer Science The Verilog Language Originally a modeling language for a very efficient event-driven
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
ECE 545 Lecture 6. Behavioral Modeling of Sequential-Circuit Building Blocks. George Mason University
ECE 545 Lecture 6 Behavioral Modeling of Sequential-Circuit Building Blocks George Mason University Required reading P. Chu, RTL Hardware Design using VHDL Chapter 5.1, VHDL Process Chapter 8, Sequential
ENGR 3410: Lab #1 MIPS 32-bit Register File
ENGR 3410: Lab #1 MIPS 32-bit Register File Due: October 12, 2005, beginning of class 1 Introduction The purpose of this lab is to create the first large component of our MIPS-style microprocessor the
SEQUENTIAL STATEMENTS
SEQUENTIAL STATEMENTS Sequential Statements Allow to describe the behavior of a circuit as a sequence of related events Can be used to model, simulate and synthesize: Combinational logic circuits Sequential
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
Verilog Fundamentals. Shubham Singh. Junior Undergrad. Electrical Engineering
Verilog Fundamentals Shubham Singh Junior Undergrad. Electrical Engineering VERILOG FUNDAMENTALS HDLs HISTORY HOW FPGA & VERILOG ARE RELATED CODING IN VERILOG HDLs HISTORY HDL HARDWARE DESCRIPTION LANGUAGE
Lab 7 (Sections 300, 301 and 302) Prelab: Introduction to Verilog
Lab 7 (Sections 300, 301 and 302) Prelab: Introduction to Verilog Name: Sign the following statement: On my honor, as an Aggie, I have neither given nor received unauthorized aid on this academic work
Part 4: VHDL for sequential circuits. Introduction to Modeling and Verification of Digital Systems. Memory elements. Sequential circuits
M1 Informatique / MOSIG Introduction to Modeling and erification of Digital Systems Part 4: HDL for sequential circuits Laurence PIERRE http://users-tima.imag.fr/amfors/lpierre/m1arc 2017/2018 81 Sequential
VHDL Essentials Simulation & Synthesis
VHDL Essentials Simulation & Synthesis Course Description This course provides all necessary theoretical and practical know-how to design programmable logic devices using VHDL standard language. The course
Introduction to VHDL Lecture D
Introduction to VHDL Lecture D Prof. K. J. Hintz Department of Electrical and Computer Engineering George Mason University Copyright 1995, 1996 Basic VHDL RASSP Education & Facilitation Module 10 Version
Lecture 7. Summary of two-level combinational-logic. Ways of specifying circuits. Solving combinational design problems. Verilog versus VHDL
Lecture 7 Summary of two-level combinational-logic Logistics Homework due today Homework out today due next Wednesday First midterm a week Friday: Friday Jan 0 Will cover up to the of Multiplexers/DeMultiplexers
Verilog Hardware Description Language ROOM: B405
Verilog Hardware Description Language HONG@IS.NAIST.JP ROOM: B405 Content Lecture 1: Computer organization and performance evaluation metrics Lecture 2: Processor architecture and memory system Lecture
Parallel- and sequential data processing
BO 1 Parallel- and sequential data processing Outline Parallelism in VHDL Delta delays and Simulation time VHDL simulation cycle Process activation Parallel- and sequential statements Bengt Oelmann --
ECE 4514 Digital Design II. Spring Lecture 13: Logic Synthesis
ECE 4514 Digital Design II A Tools/Methods Lecture Second half of Digital Design II 9 10-Mar-08 L13 (T) Logic Synthesis PJ2 13-Mar-08 L14 (D) FPGA Technology 10 18-Mar-08 No Class (Instructor on Conference)
Synthesis of Combinational and Sequential Circuits with Verilog
Synthesis of Combinational and Sequential Circuits with Verilog What is Verilog? Hardware description language: Are used to describe digital system in text form Used for modeling, simulation, design Two
Sign here to give permission to return your test in class, where other students might see your score:
EEL 4712 Midterm 1 Spring 2017 VERSION 1 Name: UFID: Sign here to give permission to return your test in class, where other students might see your score: IMPORTANT: Please be neat and write (or draw)
ECE4401 / CSE3350 ECE280 / CSE280 Digital Design Laboratory
ECE4401 / CSE3350 ECE280 / CSE280 Digital Design Laboratory Instructor John Chandy Office: ITEB 437 Office Hours: W10-12 Tel: (860) 486-5047 Email: john.chandy@uconn chandy@uconn.edu Class home page: HuskyCT
SIS Logic Synthesis System
SIS Logic Synthesis System Luigi Di Guglielmo Davide Bresolin Tiziano Villa University of Verona Dep. Computer Science Italy Introduc>on Logic Synthesis performs the transla>on from a high level descrip>on
CSE Opera,ng System Principles
CSE 30341 Opera,ng System Principles Synchroniza2on Overview Background The Cri,cal-Sec,on Problem Peterson s Solu,on Synchroniza,on Hardware Mutex Locks Semaphores Classic Problems of Synchroniza,on Monitors
EE 459/500 HDL Based Digital Design with Programmable Logic. Lecture 4 Introduction to VHDL
EE 459/500 HDL Based Digital Design with Programmable Logic Lecture 4 Introduction to VHDL Read before class: Chapter 2 from textbook (first part) Outline VHDL Overview VHDL Characteristics and Concepts
Introduction to Verilog/System Verilog
NTUEE DCLAB Feb. 27, 2018 Introduction to Verilog/System Verilog Presenter: Yao-Pin Wang 王耀斌 Advisor: Prof. Chia-Hsiang Yang 楊家驤 Dept. of Electrical Engineering, NTU National Taiwan University What is
Recommended Design Techniques for ECE241 Project Franjo Plavec Department of Electrical and Computer Engineering University of Toronto
Recommed Design Techniques for ECE241 Project Franjo Plavec Department of Electrical and Computer Engineering University of Toronto DISCLAIMER: The information contained in this document does NOT contain
Digital Design with SystemVerilog
Digital Design with SystemVerilog Prof. Stephen A. Edwards Columbia University Spring 25 Synchronous Digital Design Combinational Logic Sequential Logic Summary of Modeling Styles Testbenches Why HDLs?
Lab # 2. Sequential Statements
The Islamic University of Gaza Faculty of Engineering Department of Computer Engineering ECOM 4111: Digital System Lab Lab # 2 Sequential Statements Eng. Alaa O Shama September, 2015 Introduction In this
Hardware Description Languages: Verilog. Quick History of HDLs. Verilog/VHDL. Design Methodology. Verilog Introduction. Verilog.
Hardware Description Languages: Verilog Quick History of HDLs Verilog Structural Models (Combinational) Behavioral Models Syntax Examples CS 150 - Fall 2005 - Lecture #4: Verilog - 1 ISP (circa 1977) -
ECE 353 Lab 4. Verilog Review. Professor Daniel Holcomb With material by Professor Moritz and Kundu UMass Amherst Fall 2016
ECE 353 Lab 4 Verilog Review Professor Daniel Holcomb With material by Professor Moritz and Kundu UMass Amherst Fall 2016 Recall What You Will Do Design and implement a serial MIDI receiver Hardware in
Concurrent & Sequential Stmts. (Review)
VHDL Introduction, Part II Figures in this lecture are from: Rapid Prototyping of Digital Systems, Second Edition James O. Hamblen & Michael D. Furman, Kluwer Academic Publishers, 2001, ISBN 0-7923-7439-
Hardware Description Languages: Verilog
Hardware Description Languages: Verilog Verilog Structural Models (Combinational) Behavioral Models Syntax Examples CS 150 - Fall 2005 - Lecture #4: Verilog - 1 Quick History of HDLs ISP (circa 1977) -
Sequential Logic - Module 5
Sequential Logic Module 5 Jim Duckworth, WPI 1 Latches and Flip-Flops Implemented by using signals in IF statements that are not completely specified Necessary latches or registers are inferred by the
Synthesis of Language Constructs. 5/10/04 & 5/13/04 Hardware Description Languages and Synthesis
Synthesis of Language Constructs 1 Nets Nets declared to be input or output ports are retained Internal nets may be eliminated due to logic optimization User may force a net to exist trireg, tri0, tri1
Speaker: Kayting Adviser: Prof. An-Yeu Wu Date: 2009/11/23
98-1 Under-Graduate Project Synthesis of Combinational Logic Speaker: Kayting Adviser: Prof. An-Yeu Wu Date: 2009/11/23 What is synthesis? Outline Behavior Description for Synthesis Write Efficient HDL
Spiral 1 / Unit 4 Verilog HDL. Digital Circuit Design Steps. Digital Circuit Design OVERVIEW. Mark Redekopp. Description. Verification.
1-4.1 1-4.2 Spiral 1 / Unit 4 Verilog HDL Mark Redekopp OVERVIEW 1-4.3 1-4.4 Digital Circuit Design Steps Digital Circuit Design Description Design and computer-entry of circuit Verification Input Stimulus
Lecture 4: Modeling in VHDL (Continued ) EE 3610 Digital Systems
EE 3610: Digital Systems 1 Lecture 4: Modeling in VHDL (Continued ) Sequential Statements Use Process process (sensitivity list) variable/constant declarations Sequential Statements end process; 2 Sequential
EE595. Part VII VHDL Synthesis Techniques and Recommendations. EE 595 EDA / ASIC Design Lab
EE595 Part VII VHDL Synthesis Techniques and Recommendations Introduction Synthesis is the translation process from an abstract description of a hardware device into an optimized technology specific gate
Assignment. Last time. Last time. ECE 4514 Digital Design II. Back to the big picture. Back to the big picture
Assignment Last time Project 4: Using synthesis tools Synplify Pro and Webpack Due 11/11 ning of class Generics Used to parameterize models E.g., Delay, bit width Configurations Configuration specification
Hardware description languages
Specifying digital circuits Schematics (what we ve done so far) Structural description Describe circuit as interconnected elements Build complex circuits using hierarchy Large circuits are unreadable Hardware
Combinational Circuit Design
Modeling Combinational Circuits with Verilog Prof. Chien-Nan Liu TEL: 3-42275 ext:34534 Email: jimmy@ee.ncu.edu.tw 3- Combinational Circuit Design Outputs are functions of inputs inputs Combinational Circuit
EEL 4712 Name: SOLUTION Midterm 1 Spring 2016 VERSION 1 UFID:
EEL 4712 Name: SOLUTION Midterm 1 Spring 2016 VERSION 1 UFID: Sign here to give permission to return your test in class, where other students might see your score: IMPORTANT: Please be neat and write (or
Introduction to Verilog HDL. Verilog 1
Introduction to HDL Hardware Description Language (HDL) High-Level Programming Language Special constructs to model microelectronic circuits Describe the operation of a circuit at various levels of abstraction
Verilog. What is Verilog? VHDL vs. Verilog. Hardware description language: Two major languages. Many EDA tools support HDL-based design
Verilog What is Verilog? Hardware description language: Are used to describe digital system in text form Used for modeling, simulation, design Two major languages Verilog (IEEE 1364), latest version is
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
APPLICATION NOTE. A CPLD VHDL Introduction. Introduction. Overview. Entity. XAPP 105 January12, 1998 (Version 1.0) 0 4* Application Note
0 APPLICATION NOTE A CPLD VHDL Introduction XAPP 105 January12, 1998 Version 1.0) 0 4* Application Note Summary This introduction covers the basics of VHDL as applied to Complex Programmable Logic Devices.
HDL. Hardware Description Languages extensively used for:
HDL Hardware Description Languages extensively used for: Describing (digital) hardware (formal documentation) Simulating it Verifying it Synthesizing it (first step of modern design flow) 2 main options:
Chapter 4 :: Topics. Introduction. SystemVerilog. Hardware description language (HDL): allows designer to specify logic function only.
Chapter 4 :: Hardware Description Languages Digital Design and Computer Architecture David Money Harris and Sarah L. Harris Chapter 4 :: Topics Introduction Combinational Logic Structural Modeling Sequential
Lecture 32: SystemVerilog
Lecture 32: SystemVerilog Outline SystemVerilog module adder(input logic [31:0] a, input logic [31:0] b, output logic [31:0] y); assign y = a + b; Note that the inputs and outputs are 32-bit busses. 17:
Brief Introduction to Verilog HDL (Part 1)
BUDAPEST UNIVERSITY OF TECHNOLOGY AND ECONOMICS FACULTY OF ELECTRICAL ENGINEERING AND INFORMATICS DEPARTMENT OF MEASUREMENT AND INFORMATION SYSTEMS Brief Introduction to Verilog HDL (Part 1) Tamás Raikovich