Internal Error: Sub-system: SIN, File: /quartus/tsm/sin/sin_micro_tnodes_dag.cpp, Line: 974 - Internal Error: Sub-system: SIN, File: /quartus/tsm/sin/sin_micro_tnodes_dag.cpp, Line: 974 Description Due to a problem in the Quartus® Prime software version 16.1 and later, you may see this internal error when compiling for an unsupported Arria® 10 speed grade. Internal Error: Sub-system: SIN, File: /quartus/tsm/sin/sin_micro_tnodes_dag.cpp, Line: 974 Problem encountered while reading the specified SIN_MICRO_TNODES_DAG from disk [/opt/eda/altera/v16.0/quartus/common/devinfo/20nm/ddb_nightfury_emif_fls_m3] Resolution To work around this problem, select a valid speed grade. This problem is scheduled to be fixed in a future release of the Quartus Prime software. Custom Fields values: ['novalue'] Troubleshooting FB: 416119; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 16.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']