SOPC, Custom IP (Pass through) problem

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