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formjk is correct. The empty signal is the problem. However, it's not your fault. The Video IP cores do not use the empty signal, but SoPC builder expects it to be there for everything else. It's actually called out in the Errata.
You can get around it by:
1 - Don't create the empty signal for your custom core. When you want to create the core, hold the <Shift> key as you click create.
2 - Do create the empty signal. In which case you'll get an error in SoPC builder when you connect up the component. Hold the <Shift> key when you click the generate button in SoPC builder.
3 - Upgrade to 8.1 or 9.0. Altera fixed the problem in 8.1.
Jake
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Hi Jake,
I have one question, if you can clarify.
I have few custom components in my SOPC. I m using Quartus 8.0.
and untill now i was using the second option, holding the CTRL key while generating SOPC system.
I tried with the first method, " dont create the empty signal and press CTRL while creating the component ".
May be i am not following the correct steps, but how we can do that, not creating the empty signal in the component and getting the custom component.
It would be helpful, if you can tell me the steps. As if there are no erros in SOPC, then it would be very helpful to me as i want to use C2H accelaration, if possible, without upgrading to 8.1 or 9.0.
Thanks.
Honored Contributor
