Problem erasing EPCQ flash memory on INTEL Cyclone evaluation board with Generic Serial Flash Interface Intel running on NIOS II

Hi John,

unfortunately when I read data after "sector Erase" completes, I don't find 0xFF, but the values I've stored before (0x7D).

So, now, I have a new question: If I want erase the sector starting at address "0x1F0000" in the memory array organization (as explained in "EPCQ-A Serial Configuration Device Datasheet") which address do I need specify in "erase sector" command? Is "0x1F0000" correct?

Moreover, if you look in to the attached picture (related to an "Erase Bulk" operation, you can see that that flag WIP is cleared at the first Status read (so the operation is considered completed at the first check).

I hope this can help you to better understand where I'm wrong.

Thank you

Maurizio