Article ID: 000096428 Content Type: Troubleshooting Last Reviewed: 09/12/2023

Why are Pin Assignments missing in the Nios® V/m PIO LED Toggle Example Design?

Environment

  • Intel® Quartus® Prime Pro Edition
  • PIO (Parallel I O) Intel® FPGA IP
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.4, you may see missing pin assignments in the System QIP file of the Nios® V/m PIO LED Toggle Example Design, which is one of the pre-installed example designs in Intel® Quartus® Prime Pro Edition Software. This is due to the parallel input/output (PIO) core with Avalon® interface preset not being applied to the instantiated IP in the Platform Designer system of the design.

    Resolution

    To work around this problem in the Intel® Quartus® Prime Pro Edition Software version 22.4, perform one of the following two options: 

    • Design 
    1. Open the Platform Designer system and select the parallel input/output (PIO) core with Avalon® interface instance in the Platform Designer's System View

    2. From the Presets tab, click Apply to apply the preset manually. If the Presets tab is not available, you can invoke it via View > Presets

    3. Save and Generate HDL of the system 

    4.  Run the Intel® Quartus® Prime Pro full compilation and re-generate the .sof file. This .sof file will contain the required pinout details which will direct the parallel input/output (PIO) core with Avalon® interface output ports to be mapped to the respective LED's on the targeted Intel Agilex® 7 F-Series Development Kit. 

     

    • Batch mode execution of design through scripts: 

    1. Open the niosv_pio_qsys_top.tcl script contained within the scripts folder of the design  

    2. Comment out the line number 308. This will ensure that the presets to parallel input/output (PIO) core with Avalon® interface will get applied correctly 

    3. Run the niosv_pio_qsys_top.tcl script 

     

    This problem has been fixed in the Intel® Quartus® Prime Pro Edition Software version 23.1.​ 

    Related Products

    This article applies to 2 products

    Intel Agilex® 7 FPGAs and SoC FPGAs
    Intel Agilex® 7 FPGA F-Series Development Kits