Internal Error: Sub-system: ASM, File: /quartus/comp/asm/asm_bit_connect.cpp, Line: 494 - Internal Error: Sub-system: ASM, File: /quartus/comp/asm/asm_bit_connect.cpp, Line: 494 Description Due to a problem in the Quartus® II software version 12.0 SP2 and earlier, this error may be seen during the Assembler stage when compiling a design targeting a Stratix® V device. Resolution To work around this problem, download and install the Stratix V/Arria® V/Cyclone® V device patch 2.dp7 or later from the related solution below. Related Articles How do I address known software issues for Stratix V, Arria V and Cyclone V devices in the Quartus II software version 12.0 SP2? Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 12.0 ['Stratix® V E FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']