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Altera_Forum's avatar
Altera_Forum
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15 years ago

Debugging 4 nios II cores

Hi ,

I have made a system with 4 NIOS II cores each with its level 1 jtag. One core is connected to the JTAG UART.

My understanding according to the documentation is that i can debug multiple NIOS cores at the same time using the NIOS II SBT. I have previously done so for 2 NIOS cores.

But in the 4 NIOS core case when i try debug the software project for the 3-rd core i still only get 2 valid debug targets.( which is for core -1 and 2 )

Since i have 4 nios cores shouldn't i get 4 targets to choose from in the debug configuration.

I am using Quatrus II 9.1 with sp2 web edition and NIOS EDS 9.1 . Any help would be appreciated

p.s Just wondering if i am correct in assuming that adding JTAG UARTs would not be necessary to add valid debug targets

2 Replies

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

    Hi All,

    I have attached screenshots of the sopc system and the targets shown in the Nios EDS. As can be seen i only get 2 targets to attach to rather than the expected 4 targets for the 4 CPU's..

    I have checked this in a Quatrus II 10 subscription edition as well ( same problem ) so it seems to be an issue with the system i have built.

    Any help would be appreciated
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    Hi, i also meet problem in multi-core debugging, have you solved it?