Setting generics/parameters in Altera Quartus II

Once you've loaded in your design, analyzes it by clicking the button Start Analysis and Synthesis.
Go to the menu option Assignments > Settings... and click on Default Parameters. You can now set the generics for your entity as you can see from the following screen shot:

VHDL
Verilog
SystemVerilog
Tcl
FPGA
FAQ

Of course you can also use Tcl as we recommend, and include in your synthesis script the following lines 


  set_parameter -name nbits 4
  set_parameter -name maxcount 10