05369749 is referenced by 80 patents and cites 37 patents.

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/88 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.

Title
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
Application Number
353115
Publication Number
5369749
Application Date
April 19, 1994
Publication Date
November 29, 1994
Inventor
Kenneth R Sanderson
West Palm Beach
FL, US
John M Loffredo
Deerfield Beach
FL, US
James M Joyce
Boca Raton
FL, US
Lonnie E Grice
Boca Raton
FL, US
John M Dinwiddie Jr
West Palm Beach
FL, US
Ernest D Baker
Boca Raton
FL, US
Agent
Barry L Haley
Robert S Babayi
John C Black
Assignee
IBM Corporation
FL, US
IPC
G06F 13/00
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