Internal Error: Sub-system: VRFX2, File: /quartus/synth/vrfx2/vrfx2_xmr.cpp, Line: 1211 - Internal Error: Sub-system: VRFX2, File: /quartus/synth/vrfx2/vrfx2_xmr.cpp, Line: 1211 Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 21.3 and earlier, you may see this error during synthesis. Resolution This problem is fixed beginning with Intel® Quartus® Prime Pro Edition Software version 21.4. Custom Fields values: ['novalue'] Troubleshooting 18018497604 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 21.4 21.3 ['Agilex™ 7 FPGAs and SoCs', 'Arria® 10 FPGAs and SoCs', 'Cyclone® 10 FPGAs', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']