Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/quartus_interface/qi_common/vpr_qi_timing_analysis_direct_api.cpp, Line: 1084 - Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/quartus_interface/qi_common/vpr_qi_timing_analysis_direct_api.cpp, Line: 1084 Description Due to a problem in the Quartus® II software version 12.0 SP2, you may see this internal error if your design contains an Avalon® Memory-Mapped interface. Resolution To work around this problem, use a different seed as the problem is seed dependent. 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 12.0.2 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']