Honored Contributor
Honored ContributorThe SD card mentioned will be hosted by the external microcontroller. It will recover data from it and generate the passive serial programming signals, that the FPGA requires, to configure it. How many FPGA images can it store? As many as there is room for on the SD card. For reference, an uncompressed EP4CE22 image is a little under 720kBytes.
You mention the EEPROM on the DE0-Nano. This is hosted from the FPGA. So, unless the FPGA is configured, your micro won't be able to access it - unless you've wired your micro directly to it. The EEPROM is too small to hold an FPGA image anyway. The DE0-Nano also has an EPCS64 intended for storing FPGA images. However, this too is hosted by the FPGA. So, this too won't be accessible from your micro unless the FPGA is configured. Cheers, Alex
