Which Quartus II versions supports FLEX, APEX, ACEX, and HardCopy Stratix device families? - Which Quartus II versions supports FLEX, APEX, ACEX, and HardCopy Stratix device families? Description Design software support for FLEX, APEX, ACEX, and HardCopy Stratix device families is not provided in versions of the Quartus II software beginning with version 9.1. Use the Quartus II software version 9.0 or earlier to support those devices. Resolution Refer to the section Design Software Support for Mature Device Families in the Quartus II Software Device Support Release Notes (PDF) for the Quartus II software version 9.1 for details. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 9.1 ['APEX™ 20KE', 'Acex® 1K', 'Apex™ 20K', 'Apex™ 20KC', 'Flex® 10K', 'Flex® 10KA', 'Flex® 10KE', 'Flex® 8000', 'Stratix® FPGAs', 'Stratix® GX FPGA'] ['novalue'] ['novalue'] ['novalue']