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Hi Stefania,

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i want a non volatile application.

if possible i want a non volatile application using only cyclone II usb blaster and quartus, without any others component.

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in non volatile applications, you will always need some kind of configuration device when using SRAM based FPGAs (there are some other kinds of SRAM FPGAs out in the market wich have the config device in the package of the FPGA, but this is a minority of devices). This could be an SPI Flash (like AS Configuration) a microcontrolelr or paralleflash or whatever.

So the minimal configuration you will need (if you want JTAG for debugging or other purposes) is the Cyclone II with JTAG Interface, the SPI Flash for Active serial Configuration attached to the CycloneII, USB-Blaster and Quartus II. Then the schematic will look like Stewart Little posted.

I hope you are now a little bit less confused. :)

Christian