Does the PCI-X Core support self-configuration accesses? In other words, is there a mechanism such that the user application can configure the core from the user application interface?
No this is not supported by the PCI-X Core.
The version 5 series core (Virtex-4) provides a method through the configuration file to pre-configure BAR0 and BAR1 with an address prior to power-up. See the User Guide for more information.
The version 6 series core (Virtex-5) does provide a way to do this.
07/13/2009 - Updated with version 6 information.