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Altera_Forum's avatar
Altera_Forum
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14 years ago

Unable to debug

Hi folks.

I have two(2) boards with different Altera components. First one - whith Cyclone III and the second one - with Arria II GX.

The board with Cyclone III is OK. I am programming flash and then i can debug my NIOS program.

But the second one(wtih Arria II GX)... I can not start to debug NIOS program(from NIOS IDE) on this borad.

I receive following message:

Using cable "USB-Blaster [USB-0]", device 1, instance 0x00

Pausing target processor: not responding.

Resetting and trying again: FAILED

Leaving target processor paused

Please guys,help with this issue cause i am stuck with this ****(sorry) two months yet.

Wher can be a problem. Configuration is programming without any problem,but then...

Thank you,Slava

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    The processor not responding at all is usually caused by one of those:

    [list][*]bad clock (are you getting the clock from the right pin? If using a pll, are the frequencies correct, is the pll locked?)

    [*]bad reset signal (the reset input on the SOPC component is active low, while most HDL designs use an active high signal)

    [*]using a Nios CPU in evaluation mode without a license. In that case do not close the alert box saying that you are in Opencore evaluation (the one with the cancel button) or the CPU will stop answering[/list]
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    Thank you,all.

    Problem resolved. We have found it by ourself, but your suggestions were correct.

    Clock and reset was defined in FPGA configuration 1.8V and it was not enough.

    Thank you,all.