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Altera_Forum's avatar
Altera_Forum
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10 years ago

Checksum of the SOF file

When I download any sof file into the SRAM cells of the FPGA, in the programmer window there is a random checksum ID specific to some design. SOF file when edited using a textpad shows few english...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

1) No - you cannot read back the checksum. You cannot read back anything from the FPGA's configuration SRAM.

2) I doubt you can unless Altera publish how they calculate this. I'm not aware they do.

3) No - you certainly cannot reverse engineer a design purely from the checksum.

4) Configuration sizes for a particular device are always the same size (unless the particular FPGA family/device supports compressed configuration images.

I'm a little troubled as to your motives for knowing these things...

Cheers,

Alex