Internal Error: Sub-system: ASMIO, File: /quartus/comp/asmio/asmio_buf.cpp, Line: 2291 - Internal Error: Sub-system: ASMIO, File: /quartus/comp/asmio/asmio_buf.cpp, Line: 2291 Description Due to a problem in Quartus® II software version 11.1 SP2 or earlier, this error may occur when running the Assembler if you compile a design targeting a Stratix® V GX device. This error may occur if the project has Reserved Pin assignments with any of the following values: As SignalProbe output As output driving VCC As output driving an unspecified signal As output driving ground Resolution To work around this problem, disable Reserved Pin assignments with any of the above values. This issue is fixed beginning with the Quartus II software version 12.0. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 12.0 11.1.1 ['Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']