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Altera_Forum's avatar
Altera_Forum
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16 years ago

Decoding Cyclone III SOF header

I'm using remote update to go from factory image to application image. After remote update loads the application configuration, I now need to copy the application NIOS II firmware to RAM for executi...
Altera_Forum's avatar
Altera_Forum
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16 years ago

It seems you are using the algorithm to find the length for Cyclone II. You should be looking at boot_loader_epcs_bits_sii_siii_ciii.S to know how to find the length for Cyclone III.

For Cyclone III, one bit from each of bytes 33-39 and bytes 48-72 form a 32 bit length value for the total number of bits. Using your data, I determined the length to be 0xABB41 bytes. Maybe I picked out the wrong bits when I did this, as this still does not quite match the value you posted.