Internal Error: Sub-system: EMITT, File: /quartus/sld/emitt/emitt_hardware_driver_impl.cpp, Line: 1019 - Internal Error: Sub-system: EMITT, File: /quartus/sld/emitt/emitt_hardware_driver_impl.cpp, Line: 1019 Description Due to a problem in the Intel® Quartus® Prime Pro Edition software version 18.1 Update 2 and earlier, you may see this error when using EMIF Debug Toolkit. Resolution This error is caused by the lack of a refence clock, please make sure the refence clock frequency is correct and present before the EMIF Debug toolkit is running. This problem is fixed in the Intel® Quartus® Prime Pro Edition software version 20.1. Custom Fields values: ['novalue'] Troubleshooting 1507647082 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 20.1 18.1 ['Programmable Logic Devices', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']