PCI1520: Code 12, resource management issue in Windows Device Manager

Hello,

I have an XIO2001 PCIe-to-PCI bridge in front of a PCI1520 cardbus controller.  Upon card insertion, Windows Device Manager is reporting Code 12 - not enough resources.  Wondering if there are special register writes required for allocating I/O Space correctly with this configuration, or if they are required for interrupt reporting.

Thanks,

Steve