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    25.
    发明专利
    未知

    公开(公告)号：DE69113241D1

    公开(公告)日：1995-10-26

    申请号：DE69113241

    申请日：1991-11-20

    Applicant: IBM

    Inventor： DINWIDDIE JOHN MONROE ,  FREEMAN BOBBY JOE ,  SUAREZ GUSTAVO ARMANDO ,  WILKIE BRUCE JAMES

    IPC: G06F3/048 ,  G06F3/14 ,  G09G1/16 ,  G09G5/00

    Abstract: An information handling apparatus for transferring and composing image signals for display including a bus interface circuit adapted to allow selective access to a bus of an independent image signal generated by an independent image source. The selective access enables composition of the independent image signal in response to control information; the composition enables real time display of a composed image signal.

    30.
    发明专利
    未知

    公开(公告)号：DE69032631T2

    公开(公告)日：1999-05-27

    申请号：DE69032631

    申请日：1990-05-16

    Applicant: IBM

    Inventor： DINWIDDIE JOHN MONROE ,  GRICE LONNIE EDWARD ,  JOYCE JAMES MAURICE ,  LOFFREDO JOHN MARIO ,  SANDERSON KENNETH RUSSELL ,  BAKER ERNEST DYSART

    IPC: G06F15/16 ,  G06F12/02 ,  G06F13/38 ,  G06F13/12

    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 form 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 across 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 to 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.

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