Internal Error: Sub-system: MEM, File: /quartus/ccl/mem/mem_segment.cpp, Line: 735 - Internal Error: Sub-system: MEM, File: /quartus/ccl/mem/mem_segment.cpp, Line: 735 Description Due to a problem in the Quartus® II software versions 11.0 SP1 and earlier, you may see this error when compiling your design if the Timing-Driven Synthesis option is turned on. Resolution To work around this problem, turn off the Timing-Driven Synthesis option on the Analysis & Synthesis Settings page of the Settings dialog box. This problem 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 10.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']