define a custom bus in SOPC Builder

right out of my i would say yes, i remember an avalon specific document that gave some very useful hints about the recomended syntax for custom ip signals that are connected to the avalon switch fabric.

that document recomended to group and name signals so sopc builder & component editor would automatically recognize them (it works!)

start naming with avs_ for Avalon Valid Slave, or gls_ for global signal

follow by your interface name like myinterface_

if that signal is intended to leave sopc avalon and should be exported to top level add export_

and finaly your custom name, or the avalon signal name you want to connect to like address

you will end up with these names for example

avs_myinterface_chipselect

or

avs_myinterface_export_myoutput

or

gls_clk

that document also explained how sopc builder automaticaly connects signals between 2 ips, so sopc builder should be able to do these connections

but i am not shure if it would connect a complex bus interface