Virtualization of a parition based on addresses of an I/O adapter within an external emulation unit

Systems, methodologies, media, and other embodiments associated with external virtualization are described. One exemplary system embodiment includes an emulation logic located external to an integrated circuit to which it may be operably connected. The example emulation logic may include a virtualization logic that is configured to virtualize a portion of a function performed by the integrated circuit. The portion may be identifiable by an address associated with the portion. The example emulation logic may also include a data store that is operably connected to the virtualization logic and that is configured to store a state data associated with virtualizing the portion of the function.