Execution problems

Altera_Forum · ‎04-13-2005

I bought the Nios 2 Evaluation Kit and I successfully ran 'count_binary' example.

After that I've made modifications in Quartus and then I've updated the FPGA with the new .sof file.

Now I'm no more able to execute count_binary. It seems that PC increments correctly through the starting line of the assembly code but sometimes the instructions are not executed correctly.

Any clues?

Thank you.

Marco

Altera_Forum · ‎04-13-2005

Hi Marco,

> After that I've made modifications in Quartus

...

> Now I'm no more able to execute count_binary.

...

> Any clues?

What 'modifications' did you make?

Regards,

--Scott

Altera_Forum · ‎04-13-2005

I've added a number of counters, gates, f/f, 74597, and so on.

In the sopc builder, I added various gpio, and a user interface logic to a dual port ram.

I even tried to slow down the cpu clock with no success.

Altera_Forum · ‎04-13-2005

Are you able to build and execute the example design (without modifications)?

Altera_Forum · ‎04-13-2005

yes I can!

I've just solved the problem.

I can run the modified version by slowing the clock once again. Now I'm involved in locating the problem.

Cheers,

Marco