Ernest D Baker, John M Dinwiddie Jr, Lonnie E Grice, James M Joyce, John M Loffredo, Kenneth R Sanderson: Method and apparatus for the direct transfer of information between application programs running on distinct processors without utilizing the services of one or both operating systems. IBM Corporation, John C Black, Robert S Babayi, Barry L Haley, November 29, 1994: US05369749 (80 worldwide citation)

The functions of two virtual operating systems (e.g., S/370 VM, VSE or IX370 and S/88 OS) are merged into one physical system. Partner pairs of S/88 processors run the S/88 OS and handle the fault tolerant and single system image aspects of the system. One or more partner pairs of S/370 processors a ...