Description
Due to a problem in the Quartus® II software version 11.0 SP1, this error may be seen during Analysis & Synthesis when you compile a design targeting a Stratix® IV GX device.
Resolution
To work around, turn off timing-driven synthesis by following these steps:
- Open the Settings dialog box by selecting Settings on the Quartus II Assignments menu.
- Select the categor Analysis & Synthesis Settings
- Turn off the option Timing-Driven Synthesis in the Analysis & Synthesis Settings page
This problem is scheduled to be fixed in a future version of the Quartus II software.