Hi, In tudos/l4/pkg/generic_io/lib/clientlib/pci.c, I see reference to these function calls: l4_io_pci_find_slot_call () l4_io_pci_find_device_call () l4_io_pci_find_class_call () l4_io_pci_find_read_config_byte_call () ... But, where are these functions defined? Thanks! SK -- Shakthi Kannan http://www.shakthimaan.com