Generation of an Ethernet 10-Gps Ethernet MAC results in an Error: Family name Cyclone IV GX is illegal - Generation of an Ethernet 10-Gps Ethernet MAC results in an Error: Family name Cyclone IV GX is illegal Description Generation of an Ethernet 10-Gbps MAC megafunction with the MegaWizard Plug-In Manager fails if you have not installed Cyclone IV GX device support. During generation, the MegaWizard Plug-In Manager displays a message similar to the following: Error: Family name "Cyclone IV GX" is illegal This issue does not affect Ethernet 10G MAC megafunctions generated with Qsys. Resolution Install Cyclone IV GX device support. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 11.0.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']