Warning (176228): Can't pack node <nstance name> and I/O node <node name> -- I/O node is a dedicated I/O pin - Warning (176228): Can't pack node <nstance name> and I/O node <node name> -- I/O node is a dedicated I/O pin Description Due to a problem in the Quartus® II software version 12.0 SP1 and earlier, you may see this warning message during the Fitter stage if you assign the Fast Input Register , Fast Output Register , or Fast Output Enable Register logic option to a dual-purpose DCLK pin. This problem affects designs targeting Stratix® V, Arria® V, and Cyclone® V devices. The register will not be packed if assigned to a dual-purpose DCLK pin. Resolution This problem is fixed beginning with the Quartus II software version 12.1. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 12.1 11.1.1 ['Arria® V GT FPGA', 'Arria® V GX FPGA', 'Arria® V ST FPGA', 'Arria® V SX FPGA', 'Cyclone® V E FPGA', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA', 'Cyclone® V SE FPGA', 'Cyclone® V ST FPGA', 'Cyclone® V SX FPGA', 'Stratix® V E FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']