Cyclone V: switching between application images using altremote_update

The data that is stored on the epcq should match that embedded in the .pof (under 128 bytes of header) or the entire .rbf file.

The data starts with IIRC 128 0xff bytes.

For some unknown reason there are slight differences between the image in the .pof and .rbf.

If your hardware is setup to generate correct 'quad reads' then you need to bit-reverse each byte of the rbf file data.

I'd program the epcq from a .pof and then use your own logic to read the data back and then check the data matches.

Then erase, write back and re-read to check your writes work.

Then check power-on-load from your own image.

Finally try the 'altremote_update' reset (which is where I get stuck).