Altera RAM-Based Shift Register Instrukcja Użytkownika Pobierz pdf (Strona 15)

Chapter 2: Getting Started 2–9

Design Example: Shift Register with Taps

May 2013 Altera Corporation RAM-Based Shift Register (ALTSHIFT_TAPS) Megafunction User Guide

Configuration Settings

In page 3 of the Shift Register (RAM-based) MegaWizard Plug-In Manager, select or

verify the configuration settings shown in Table 2–2. Click Next to advance to the next

page.

Functional Simulation in the ModelSim-Altera Simulator

Simulate the design in the ModelSim

-Altera software to generate a waveform

display of the device behavior.

You should be familiar with the ModelSim-Altera software before trying the design

example. If you are unfamiliar with the ModelSim-Altera software, refer to the

support page for software products on the Altera website (www.altera.com). On the

support page, there are links to such topics as installation, usage, and troubleshooting.

Set up and simulate the design in the ModelSim-Altera software by performing the

following steps.

1. Unzip the DE_ALTSHIFT_TAPS.zip file to any working directory on your PC.

2. Start the ModelSim-Altera software.

3. On the File menu, click Change Directory.

4. Select the folder in which you unzipped the files.

5. Click OK.

6. On the Tools menu, click Execute Macro.

7. Select the DE_ALTSHIFT_TAPS.do file and click Open. The

DE_ALTSHIFT_TAPS.do file is a script file for the ModelSim-Altera software to

automate all the necessary settings for the simulation.

Table 2–2. Shift Register (RAM-Based) MegaWizard Plug-In Manager Configuration Settings

Configuration Setting Value

Currently selected device family Stratix III

How wide should the ‘

shiftin

’ input and the ‘

shiftout

’

output buses be?

8 bits

How many taps would you like? 4

Create groups for each tap output Selected

How wide should the distance between taps be? 3

Create a clock enable port Selected

Create an asynchronous clear port Selected

What should the RAM block type be? Auto

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Altera RAM-Based Shift Register Instrukcja Użytkownika Strona 15