Internal Error: Sub-system: AMERGE, File: /quartus/atm/amerge/amerge_merger_op.cpp, Line:895 - Internal Error: Sub-system: AMERGE, File: /quartus/atm/amerge/amerge_merger_op.cpp, Line:895 Description Due to a problem in the Quartus® II software version 11.0 and later, you may see this internal error during Analysis & Synthesis. This error is related to the following assignments in the Quartus II Settings File ( .qsf ): set_global_assignment -name HUB_ENTITY_NAME SLD_HUB set_global_assignment -name HUB_INSTANCE_NAME SLD_HUB_INST Resolution To work around this problem, delete these assignments from the .qsf . This issue is scheduled to be fixed in a future version of the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 11.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']