Internal Error: Sub-system: MLS, File: /quartus/synth/mls/mls_process_tri.cpp, Line: 5986 - Internal Error: Sub-system: MLS, File: /quartus/synth/mls/mls_process_tri.cpp, Line: 5986 Description Due to a problem in the Quartus® II software version 13.0 SP1 and earlier, you may see this error if your design has a pin that is diven by a tri-state signal and is also driven by a constant. Resolution To work around this problem, do not drive a pin with two signals. This problem is scheduled to generate an error message 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']