verilog的quartus简单教程.pdf

quartus

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Quartus

II Introduction for Verilog Users

This tutorial presents an introduction to the Quartus

II software. It gives a general overview of a typical CAD

ﬂow for designing circuits that are implemented by using FPGA devices, and shows how this ﬂow is realized in the

Quartus

II software. The design process is illustrated by giving step-by-step instructions for using the Quartus

II software to implement a simple circuit in an Altera

FPGA device.

The Quartus

II system includes full support for all of the popular methods of entering a description of the

desired circuit into a CAD system. This tutorial makes use of the Verilog design entry method, in which the

user speciﬁes the desired circuit in the Verilog hardware description language. Another version of this tutorial is

available that uses VHDL hardware description language.

The screen captures in the tutorial were obtained using Quartus

II version 9.1; if other versions of the soft-

ware are used, some of the images may be slightly different.

Contents:

Getting Started

Starting a New Project

Design Entry Using Verilog Code

Compiling the Verilog Code

Using the RTL Viewer

Specifying Timing Constraints

Quartus

II Windows

1 GETTING STARTED

1 Getting Started

Each logic circuit, or subcircuit, being designed with the Quartus

II software is called a project. The soft-

ware works on one project at a time and keeps all information for that project in a single directory (folder)

in the ﬁle system. To begin a new logic circuit design, the ﬁrst step is to create a directory to hold its ﬁles.

As part of the installation of the Quartus

II software, a few sample projects are placed into a directory called

altera\91\qdesigns\vhdl_verilog_tutorial. To hold the design ﬁles for this tutorial, we will use a directory called

quartus_tutorial. The running example for this tutorial is a simple adder/subtractor circuit, which is deﬁned in the

Verilog hardware description language.

Start the Quartus

II software. You should see a display similar to the one in Figure 2. This display consists

of several windows that provide access to all the features of the Quartus

II software, which the user selects with

the computer mouse. Most of the commands provided by the Quartus

II software can be accessed by using a set

of menus that are located below the title bar. For example, in Figure 2 clicking the left mouse button on the menu

named File opens the menu shown in Figure 3. Clicking the left mouse button on the entry Exit exits from the

Quartus

II software. In general, whenever the mouse is used to select something, the left button is used. Hence

we will not normally specify which button to press. In the few cases when it is necessary to use the right mouse

button, it will be speciﬁed explicitly.

For some commands it is necessary to access two or more menus in sequence. We use the convention Menu1

> Menu2 > Item to indicate that to select the desired command the user should ﬁrst click the left mouse button

on Menu1, then within this menu click on Menu2, and then within Menu2 click on Item. For example, File >

Exit uses the mouse to exit from the system. Many commands can be invoked by clicking on an icon displayed in

one of the toolbars. To see the list of available toolbars, select Tools > Customize > Toolbars. Once a toolbar is

opened, it can be moved using the mouse. To see the command associated with an icon, position the mouse over

the icon and a tooltip will appear that displays the command name.

It is possible to modify the appearance of the display in Figure 2 in many ways. Section 7 shows how to move,

resize, close, and open windows within the main Quartus

II display.

Figure 2: The main Quartus

II display.

ALTERA

CORPORATION

AUGUST 2009

QUARTUS

II INTRODUCTION FOR VERILOG USERS

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