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Altera_Forum
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16 years ago

Preserving sectors in an EPCS

Hello, I need to update the configuration device (EPCS4N) of a Cyclone II FPGA (EP2CF4848N). Sector number 7 was used to store information that is programmed during production. I would like t...
Altera_Forum's avatar
Altera_Forum
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16 years ago

Yes it does sound convoluted. However, consider the following:

1 - Your scheme is no more convoluted than using the Quartus programmer with the JIC method. The programmer downloads a special image to the FPGA which it can then use to communicate with to reprogram the flash. You'd basically be doing the same thing.

2 - You don't have to use AS for the initial config. You could program your special image into the FPGA and use the nios2-flash-programmer for your initial config. No reason to maintain two processes.

3 - I suspect your proposed method still yields a faster programming time with the NIOS over the AS method.

Jake