.RBF file to download in serial configuration ?

Hi Jean:

It's possible to load the Cyclone III directly from the microcontroller instead of the EPCS, so you can basically have the microcontroller, do all the grunt work, and just load the RBF. It's basically just shifts out one byte at a time. With the clock bit.

Basically this is the "Passive Serial" form of loading, and is decribed in the various Cyclone device handbooks.

We use both methods here. The only thing we had to do was bit reverse the RBF so the TI McBSP would shift out the bits in the correct order, but that was a limitation of the OMAP. To save code space and run-time we basically ran a script that bitreversed the rbf before we stored it to flash.

Pete

Pete