Why do I see missing signals on my NCO or FFT cores when migrating to Arria 10? - Why do I see missing signals on my NCO or FFT cores when migrating to Arria 10? Description Due to a problem in the Quartus® II software, you will encounter port signal changes when you migrate a non-Arria® 10 (e.g. Stratix® V) FFT or NCO MegaWizard® core to Arria 10. Specifically the ports are changed to those used in a Qsys® system instead of those used in an IP Catalog® component. See the " Avalon-ST Signals " table in the user guide and note the signals with "In Qsys systems" in the description field. Resolution This is due to a problem in Quartus II software. To workaround this behavior, open the Arria 10 component (NCO or FFT), select View>System Contents, right click on the core (NCO or FFT), select Set Design Environment>NATIVE. Custom Fields values: ['novalue'] Troubleshooting novalue False ['DSP'] ['FPGA Dev Tools Quartus II Software'] novalue 14.0a10 ['Arria® 10 FPGAs and SoCs', 'Arria® 10 GT FPGA', 'Arria® 10 GX FPGA', 'Arria® 10 SX FPGA'] ['novalue'] ['novalue'] ['novalue']