These signals are not routed on the VME-GPIB, and the P2 pins are no connects. The ability to set the base address is available from the onboard DIP switch only. The KnowledgeBase that was posted at the time was incorrect and has been removed. We apologize for the confusion. You may use the VME-GPIB Installation Guide to set the base address: http://digital.ni.com/manuals.nsf/webAdvsearch/91D94345006DEB9286256CE00004ED82?OpenDocument&vid=niwc&node=132100_US