error in the address width of CFI in sopc builder

Altera_Forum · ‎05-10-2010

Hi,everyone,please forgive my poor English!

I use the Quartus II 9.1 in windows xp.In the sopc builder,I set the address width(bits) of flash memory interface as 22 .Then ,in the .bdf file of the project the address width is 23 (address_to_the_cfi_flash[22..0]).

I don't know what's wrong,how can I do this right?

Altera_Forum · ‎05-10-2010

So you are using 16bit Flash, right?

The address from sopc builder is BYTE ADDRESS, and the address of you flash chip is WORD ADDRESS.

Simply throw the A0 from your nios module away, connect them like this:

Your Nios Module Flash Chip

A1 A0

A2 A1

...

A22 A21

Altera_Forum · ‎05-10-2010

Thank you very much!!!