VHDL LAB. Page VHDL MANUAL. ECE Dept, JMIT. 3. EXPERIMENTS LIST. PROGRAMMING (using VHDL). caite.info VHDL code to realize all the gates. 2. I/II (caite.info VLSI DESIGN) ECE, I-SEM:: HDL Programming and EDA Tools Lab Lab Manual. INTRODUCTION TO VHDL. VHDL is an acronym for VHSIC. VLSI Design Lab Manual. Page 3. Index. caite.info Name of Experiment. Page No. Date Signature. 1. Write the VHDL Code & Simulate it for the.
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VHDL COMPUTER ARCHITECTURE LAB MANUAL PREPARED BY AVIJIT BOSE SOMA BANDYOPADHYAY VHDL Contents INTRODUCTION. VHDL Lab Manual - Free download as PDF File .pdf), Text File .txt) or read online for free. This Lab manual will act as a good reference for those who would . VHDL Lab caite.info - Download as PDF File .pdf), Text File .txt) or read online. FPGA MANUAL.
Xilinx Project Navigator — 8. Package declaration 5. Indore M.. Nishant Chaudhari. Erick Martinez. To open an existing project the following steps should be followed: You should clearly understand what statements are automatically generated and what are needed to be coded by yourself.
They are: Entity declaration 2. Architecture body 3. Configuration declaration 4. Package declaration 5. Package body An entity is modeled using an entity declaration and at least one architecture body.
The entity declaration describes the external view of the entity; for example, the input and output signal names. The architecture body contains the internal description of the entity; for example, as a set of concurrent or sequential statements that represents the behavior of the entity. A configuration declaration is used to create a configuration for an entity.
It specifies the binding of one architecture body from many architecture bodies that may be associated with the entity. It may also specify the bindings of components used in the selected architecture body to other entities. A package declaration encapsulates a set of related declarations, such as type declarations, subtype declarations, and subprogram declarations, which can be shared across two or more design units.
A package body contains the definitions of subprograms declared in a package declaration. A Library is a commonly used piece of code. Placing such pieces inside a library allows them to be reused or shared by other designs. To declare a Library that is to make it visible to the design 2 lines of code are needed, one containing the name of the library, and the other use a clause as shown below: ALL; usework.
Only the IEEE library must be explicitly written. ALL; 1. Name of the entity can be basically any name except VHDL reserved words.. IN BIT; x: Note that double quotes are used for vectors. The leftmost bit being the MSB. Some of the data types and their range i Boolean: Used to inform physical quantities like time, voltage etc. Some of the examples are given below: Two categories of user defined data types are shown as integer and enumerated.
The main reason for using a subtype rather than specifying a new type is that , though operations between data of different types are not allowed , between a subtype and its corresponding base type.
They can also be higher dimension, but then they are generally not synthesizable. The pre-defined synthesizable types in each of these categories are the following: The declaration is as follows: Note that its construction is not based on vectors, but rather entirely on scalars. Array initialization Signal x: Their syntax is described as follows: However if type signed is used the value can be positive or negative. On the other hand logical operations are not allowed.
However comparison operation there is no restriction. Therefore it is often necessary to convert data from one type to another. This can be done in two ways by writing a piece of VHDL code or if we invoke a function from a pre-defined package which is capable of doing this. They are as follows: Used also for establishing initial values. The logical operators are: However students are advised to try with XNOR and check whether that is working.
However real data types cannot be synthesized. For divison only power of 2 dividers shift operation are allowed. For exponentiation only static values of base and exponent are accepted.
However mod, rem, abs there is no synthesis support. General Syntax is: A guarded statement in a guarded block is executed only when the guard expression is true. Guarded Block: Another important concept regarding sequential code is that it is not limited to sequential logic indeed we can build sequential or combinational circuit or both together. Sensitivity list is the same concept as arguments in functions that is used in high level language.
A signal can be declared in a package, entity or architecture. A variable can only be declared in a piece of sequential code i. However more than one form of WAIT is available.
There are 3 basic syntax what we follow: Its syntax is as follows: There are several ways of using LOOP and the syntax looks as below: The same program while being implemented with case will look as follows: When declared in an entity it is global to all architectures that follow that entity.
Finally when declared in an architecture it is global to that architectures code only.
For example all ports of an entity are signals by default. The syntax for signal are as follows: It is not synthesizable and will only be considered during simulation. Then, Synthesize each one of them on two different EDA tools. Electronics Design Automation Tools used: Truth table: And Gate: Or Gate: Nand Gate: Nor Gate: Xor Gate: Xnor Gate: B Or Gate: B Xnor Gate: And Gate In Dataflow, behavioral Modeling:. Nand Gate In Dataflow, behavioral Modeling: Nor Gate In Dataflow, behavioral Modeling: Xnor Gate In Dataflow, behavioral Modeling: Test Bench Applicable to all the logic gates: Synthesis Report Xilinx project Navigator: Half Adder: Full Adder: B Full Adder: VHDL Code: Half Adder Using dataflow, Behavioral Modeling:.
Simulation using all the modeling styles and Synthesis of 2: Perform Zero Delay Simulation of 2: Boolean Equation: EDA Tool Name: Fpga Advantage 3. Perform Zero Delay Simulation 1: Then, Synthesize on two different EDA tools.
Perform Zero Delay Simulation 2: A Y 00 01 10 11 Perform Zero Delay Simulation 4: A Y 00 01 10 JKff port map j,k,clk,reset,q ;. This Lab manual will act as a good reference for those who would like to develop themselves in VHDL, beginning with the basics of the languages constructs used to design some of the very basic designs in digital electronics.
Also it serves as a guide to make it understood the complete process to work through in designing onto Programmable logic devices like that is CPLDs and FPGAs, right from the simulation zero delay to the implementation aspects.
For the complete coverage of VHDL along with the associated digital design exercised in the form of online classes please email to parag. Flag for inappropriate content. Related titles. Experiment 1: Jump to Page. Search inside document.
The stages are linked as follows: Block Diagram: And Gate In Dataflow, behavioral Modeling: Synthesis Xor gate: Xilinx Project Navigator — 8. Half Adder Using dataflow, Behavioral Modeling: S 0 Prepared By: A Y 00 01 10 11 Boolean Equation: A 0 Prepared By: Test Bench of D-latch: JK-flip flop: Test Bench of JK flip flop: Parag Parandkar. Sakthikumar Balasundaram. Ankit Gupta.
Avinash C Sheshu. Naresh Kumar.
Harshit Agarwal. Sameer Sadiq.