A Peripheral Component Interconnect (PCI) bus provides component level interconnection of processors, peripherals and memories. A bus protocol mechanism includes a Special Cycle command for defining "soft", i.e., configurable, transaction types for use between devices communicating on the PCI bus. Using...http://www.google.de/patents/US5507002?utm_source=gb-gplus-sharePatent US5507002 - Peripheral component interconnect special cycle protocol using soft message IDS
