Specifications

Chapter 1: Nios II Hardware Development 1–21
Creating the Design Example
May 2011 Altera Corporation Nios II Hardware Development Tutorial
1. On the Component Library tab, expand Peripherals, expand Microcontroller
Peripherals, and then click PIO (Parallel I/O).
2. Click Add. The PIO (Parallel I/O) parameter editor appears. Figure 1–11 shows
the GUI.
1 Do not change the default settings. The parameter editor defaults to an 8-bit output-
only PIO, which exactly matches the needs for the design example.
Figure 1–11 shows the PIO (Parallel I/O) parameter editor.
3. Click Finish. You return to the Qsys System Contents tab, and an instance of the
PIO appears in the system contents table.
4. In the Name column, right-click the PIO and click Rename.
5. Type
led_pio and press Enter.
6. Connect the
clk port of the clk_0 clock source to the clk port of the PIO.
Figure 1–11. PIO Parameter Editor