Internal Error: Sub-system: SGN, File: /quartus/synth/sgn/sgn_utility.cpp, Line: 4893 dimension == 0 - Internal Error: Sub-system: SGN, File: /quartus/synth/sgn/sgn_utility.cpp, Line: 4893 dimension == 0 Description Due to a problem in the Quartus® Prime Standard Edition Software version 21.1 and earlier, you may see this error during compilation in the synthesis stage when the wire is named as below: wire signal_name[0] This is because the Quartus® Prime Standard Edition Software does not support index numbers signal names. Resolution To work around this problem, change the name of the wire to the below example: wire signal_name_0 This problem is scheduled to be fixed in future release with the Quartus® Prime Standard Edition Software. Custom Fields values: ['novalue'] Troubleshooting 15012153288 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Standard'] 23.1 21.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']