Internal Error: Sub-system: GIOQ, File: /quartus/edt/gioq/gioq_port.cpp, Line: 696 - Internal Error: Sub-system: GIOQ, File: /quartus/edt/gioq/gioq_port.cpp, Line: 696 Description Due to a problem in the Quartus® II software version 13.1 and earlier, you may see this error when you double click on any port connection wire in a Block Design File ( .bdf ). Resolution To work around this problem, edit the port by double clicking on the port text to rather than the wire. This problem is scheduled to be fixed in a future release of the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']