Internal Error: Sub-system: FMAIN, File: /quartus/fitter/famin/fmain_location_constraint.cpp, Line, 3236 - Internal Error: Sub-system: FMAIN, File: /quartus/fitter/famin/fmain_location_constraint.cpp, Line, 3236 Description Due to a problem in the Intel® Quartus® Prime Pro Edition software version 19.1 and 19.2, you may see the above internal error at Fitter stage. Resolution A patch is available to fix this problem for the Intel® Quartus® Prime Pro Edition software version 19.1 and 19.2. Download and install Patch from the appropriate link below. Download patch Intel® Quartus® Prime 19.2 Patch 0.11 for Windows (.exe) Download patch Intel® Quartus® Prime 19.2 Patch 0.11 for Linux (.run) Download the Readme for Intel® Quartus® Prime 19.2 Patch 0.11 (.txt) Download patch Intel® Quartus® Prime 19.1 Patch 0.32 for Windows (.exe) Download patch Intel® Quartus® Prime 19.1 Patch 0.32 for Linux (.run) Download the Readme for Intel® Quartus® Prime 19.1 Patch 0.32 (.txt) This problem has been fixed beginning with the Intel® Quartus® Prime Pro edition software version 19.3. Custom Fields values: ['novalue'] Troubleshooting 1507343538 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 19.3 19.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']