problem in connecting a custom H/W using avalon memory mapped

Okay, so you either have already or still need to perform the following steps:

1 - Create a custom SoPC Builder component that exports your HW interface through a conduit.

2 - Generate your SoPC system.

Once this is done you should see a file:

"cycloneIII_3c25_niosII_application_selector_sopc_inst.v".

This file should contain an example instantiation of your SoPC system including your new exported conduit ports. In other words, this is showing you what the names of the ports are and how to connect them. Use this as an example as you modify the real SoPC system instantiation in your top level file.

Jake