Hello,
when generating your Megafunction version in Quartus Megawizard, a *.cmp component definition and *_inst.vhd instantiation template are also created. You can copy the text from both files to your design, possibly replacing the actual parameters in instantiation template with signals of your choice.
If you or used to certain Megafunctions, you may also instantiate it directly in your code, having direct access to Megafunction parameters without using the Megawizard.
Regards,
Frank
