COMMUNICATING MESSAGES BETWEEN PROCESSORS AND A COUPLING FACILITY

    公开(公告)号:CA2086691C

    公开(公告)日:1997-04-08

    申请号:CA2086691

    申请日:1993-01-05

    Applicant: IBM

    Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

    POLLING MECHANISM FOR TRANSFERRING CONTROL FROM ONE DATA PROCESSING SYSTEM OR SUBSYSTEM TO ANOTHER

    公开(公告)号:CA999974A

    公开(公告)日:1976-11-16

    申请号:CA186213

    申请日:1973-11-20

    Applicant: IBM

    Inventor: MOORE BRIAN B

    Abstract: A polling mechanism for use with apparatus for establishing and maintaining communication between a number of different types of subsystems. The apparatus includes a select line which interconnects all of the units in a closed loop. Control logic is provided at each unit in series with the select line. A bi-directional deselect line is provided interconnecting all of the units. A unit which has the poll (master unit) passes the poll by energizing the select line. A unit which does not wish to obtain the poll and thereby become the master unit, energizes the select line to the next unit in series in response to energization of the select line from the master unit. A unit obtains the poll (and becomes the master unit) by not energizing the select line to a next unit but by energizing the deselect which indicates to all units that the poll has been accepted.

    COMMUNICATING MESSAGES BETWEEN PROCESSORS AND A COUPLING FACILITY

    公开(公告)号:CA2086691A1

    公开(公告)日:1993-10-01

    申请号:CA2086691

    申请日:1993-01-05

    Applicant: IBM

    Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

    STORAGE ELEMENT RECONFIGURATION
    9.
    发明专利

    公开(公告)号:CA1180452A

    公开(公告)日:1985-01-02

    申请号:CA413640

    申请日:1982-10-18

    Applicant: IBM

    Abstract: STORAGE ELEMENT RECONFIGURATION This is a system which is used to perform reconfiguration of storage elements in order to permit removal of one or more of the elements for servicing or other reasons. If a storage element that is to be taken off line contains material that is crucial to the continued operation of the system, that material is copied to appropriate areas in other storage elements. After all crucial material has been copied to alternate locations, the original storage element can be taken off line for servicing or other purposes.

    10.
    发明专利
    未知

    公开(公告)号:BR9301109A

    公开(公告)日:1993-10-05

    申请号:BR9301109

    申请日:1993-03-09

    Applicant: IBM

    Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

Patent Agency Ranking