Due to a problem in the Quartus® II software version 13.1 and earlier, you may see this error when compiling a Cyclone® IV or Cyclone V design using the Functional Safety Separation Flow.
During partition import of strictly preserved safety partitions, routes to top-level safe IO buffers are not correctly preserved. When the Assembler detects the preservation mismatch during the Design Modification Flow it fails with this internal error.
To work around this problem, for the Quartus II software version 13.1 Update 4, download and install patches 4.30 and 4.55 from the links below. You must install the Quartus II software version 13.1 Update 4 before installing these patches.
- Download the Quartus II software version 13.1 Update 4 patch 4.30 for Windows (.exe)
- Download the Quartus II software version 13.1 Update 4 patch 4.30 for Linux (.run)
- Download the Readme for the Quartus II software version 13.1 Update 4 patch 4.30 (.txt)
- Download the Quartus II software version 13.1 Update 4 patch 4.55 for Windows (.exe)
- Download the Quartus II software version 13.1 Update 4 patch 4.55 for Linux (.run)
- Download the Readme for the Quartus II software version 13.1 Update 4 patch 4.55 (.txt)
For the Quartus II software version 14.1 Update 1, download and install patch 1.04 from the links below. You must install the Quartus II software version 14.1 Update 1 before installing this patch.
- Download the Quartus II software version 14.1 Update 1 patch 1.04 for Windows (.exe)
- Download the Quartus II software version 14.1 Update 1 patch 1.04 for Linux (.run)
- Download the Readme for the Quartus II software version 14.1 Update 1 patch 1.04 (.txt)
This problem is fixed beginning with version 15.0 of the Quartus II software.