I can't seem to find a definition for the term "FPGA image". I think it is just another term for an FPGA configuration that would be stored in say a SPI flash memory chip but I'm not sure.
1 Answer
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FPGA image, FPGA configuration, and FPGA bitstream, and possibly a few more terms are all essentially synonyms. It's what gets loaded onto the FPGA through the configuration interface. Doesn't have to be stored in an SPI flash specifically.