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the flash programmer is useless without a jtag interface
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Yes, this is true.
My bet is that you'll also have to modify the default bootloader for the EPCS controller in your Nios II SoPC Builder system. It must be changed to load/copy the software from a fixed location in the EPCS device in order for your strategy to work. The default bootloader expects the software to follow the hardware in the EPCS device.
Alternately, you could create a reasonably small onchip memory, point the reset address of your processor at it instead, and write your own simplified EPCS bootloader.
- I've attached some sample code that I have used for similar purposes in the past.
Best Regards,
-- slacker
[UPDATE: If not obvious, it is NOT possible to run code directly from an EPCS device.]
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