Forum Discussion

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

SignalTap, Nios and netlists

Hi,

For the last two days I have been trying to set up SignalTap to extract the trace from a nios II processor. I have followed the AN446 application note, but when I compile I get the message "Partially connected in-system debug instance...". I have gathered from forum posts that the signals must be set as 'pre-synthesis' or 'source' type, but where?? As I am adding the Nios II nodes from a plugin it gives me no option, unlike when adding my own nodes.

Also, incremental compilation must be disabled. I am using Quartus 11.0 and may be overlooking something, but I simply cannot find a 'disable' button, not even in the "Incremental Compilation" settings.

I would very much appreciate any help!

Josef

5 Replies

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

    I have been asking around but no answer from anywhere :( Will let you know if I come across anything.

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

    A coworker of mine ran into this and I didn't have any good suggestions as workarounds. The Nios II signal tap II pluggin needs updating for this to work properly.

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

    Obviously I wasn't typing in the right keywords for within 10 seconds of reading the latest post I found a previous post on the same issue:

    http://www.alteraforum.com/forum/showthread.php?t=29483

    And indeed, by turning on "Create Debugging nodes for IP Corres" under Analysis & Synthesis->More Settings the whole thing suddenly works! Would have been nice if this had been written somewhere in the AN446 application note...