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Altera_Forum's avatar
Altera_Forum
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19 years ago

Running from on-chip memory.

I have been trying for several days to get a custom board to run Nios II embedded processor with a hello world program with no luck. I have successfully achieved this task with evaluation kits, but ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

I am working toward a solution. I haven't completely defined the problem I was having, but I was able to get the program to run.

It turns out that I had a mistake in my SOPC configuration. The on-chip memory I allocated was too large but I never got any error from the fitter in Quartus.

Something I did made the error appear. This gave me something to chase and fix. I finally found the memory size that would fit and run the program and everything ran fine from there.

The only change I made was an order of operation change. I was running from SOPC-Quartus-IDE but when I changed to SOPC-IDE-Quartus, the error appeared.

I had compiled the FPGA configuration probably 30 times with no sign of an error. Of course I can't repeat it now. I change my order of operation back to SOPC-Quartus-IDE and all is fine.

I guess I was just too dependent on being told something was wrong...

Thanks for the help.

Chris