G - Physics – 06 – F
Patent
G - Physics
06
F
354/230, 354/233
G06F 9/06 (2006.01) G06F 12/00 (2006.01) G06F 12/02 (2006.01) G06F 13/368 (2006.01) G06F 15/16 (2006.01) G06F 11/16 (2006.01) G06F 11/20 (2006.01)
Patent
CA 2009779
Abstract 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 are coupled to corresponding S/88 processors directly and through the S/88 bus. Each S/370 processor is allocated from 1 to 16 megabytes of contiguous storage from the S/88 main storage. Each S/370 virtual operating system thinks its memory allocation starts at address 0, and it manages its memory through normal S/370 dynamic memory allocation and paging techniques. The S/370 is limit checked to prevent the S/370 from accessing S/88 memory space. The S/88 Operating System is the master over all system hardware and I/O devices. The S/88 processors access the S/370 address space in direct response to a S/88 application program so that the S/88 may move I/O data into the S/370 I/O buffers and process the S/370 I/O operations. The S/83 and S/370 peer processor pairs execute their respective Operating Systems in a single system environment without significant rewriting of either operating system. Neither operating system is aware of the other operating system nor the other processor pairs.
Baker Ernest Dysart
Dinwiddie John Monroe Jr.
Grice Lonnie Edward
Joyce James Maurice
Loffredo John Mario
International Business Machines Corporation
Wang Peter
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