Specifications

Chapter 1: Nios II Hardware Development 1–25
Creating the Design Example
May 2011 Altera Corporation Nios II Hardware Development Tutorial
■ Compile the Quartus II project.
■ Veri fy tim in g.
f For further information about using the Quartus II software, refer to Introduction to the
Quartus II Software, the Quartus II Handbook, and the Quartus II Software Interactive
Tu to ria l in the Training section of the Altera website.
Instantiate the Qsys System Module in the Quartus II Project
Qsys outputs a design entity called the system module. The tutorial design example
uses the block diagram method of design entry, so you instantiate a system module
symbol first_nios2_system into the .bdf.
1 How you instantiate the system module depends on the design entry method of the
overall Quartus II project. For example, if you were using Verilog HDL for design
entry, you would instantiate the Verilog module first_nios2_system defined in the file
first_nios2_system.v.
To instantiate the system module in the .bdf, perform the following steps:
1. Double-click in the empty space to the right of the input and output wires. The
Symbol dialog box appears.
2. Under Libraries, expand Project.
3. Click first_nios2_system. The Symbol dialog box displays the first_nios2_system
symbol.
4. Click OK. You return to the .bdf schematic. The first_nios2_system symbol tracks
with your mouse pointer.
5. Position the symbol so the pins on the symbol align with the wires on the
schematic.
6. Click to anchor the symbol in place.
7. If your target board does not have LEDs that the Nios II system can drive, you
must delete the LEDG[7..0] pins. To delete the pins, perform the following steps:
a. Click the output symbol LEDG[7..0] to select it.
b. On your keyboard, press Delete.
8. To save the completed .bdf, click Save on the File menu.