Internal Error: Sub-system: CDB_SGATE, File: /quartus/db/cdb_sgate/cdb_sgate_sys.cpp, Line: 3584 - Internal Error: Sub-system: CDB_SGATE, File: /quartus/db/cdb_sgate/cdb_sgate_sys.cpp, Line: 3584 Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 18.0 Update 1 and earlier, you might see this error at the Analysis & Synthesis stage. Resolution To work around this problem, fix the Warning ID:16788 by assigning a value to the specified net. Warning ID:16788 Net "<name>" does not have a driver at <location> Fix: <name> = 1'b0 ; // set the net to ground. This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 18.1. Custom Fields values: ['novalue'] Troubleshooting 581989 False ['Arria® 10 Cyclone® 10 Hard IP for PCI Express'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 18.1 18.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']