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Which Altera Dev board do you use?[/b]
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The dev board is Nios Development Board, Stratix Edition, with A Stratix EP1S10F780C6 device, 8 Mbytes of flash memory, 1 Mbyte of static RAM, 16 Mbytes of SDRAM.
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Did you config FPGA sof before download program , as Helmchen said?[/b]
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Of course, first of all, I download the standard .sof file to config FPGA, and then do the procedure:
nios2-download -g zImage_std_1s10
this is OK!
nios2-terminal
the error comes!