Limitations on Support for pre-11.1 UniPHY External Memory Interfaces - Limitations on Support for pre-11.1 UniPHY External Memory Interfaces Description This problem affects all UniPHY-based external memory interfaces, including DDR2, DDR3, LPDDR2, QDR II, RLDRAM II and RLDRAM 3 products. You cannot open and modify UniPHY-based external memory interfaces generated in Quartus II software versions older than 11.1. Designs including cores generated in pre-11.1 versions will not migrate to the newer versions of the Quartus II software. Resolution The workaround for this issue is to recreate your external memory interface in a newer version of the Quartus II software. This issue will not be fixed. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 12.0 ['Arria® V FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']