3.
    发明专利
    未知

    公开(公告)号:DE3780306T2

    公开(公告)日:1993-02-11

    申请号:DE3780306

    申请日:1987-04-22

    Applicant: IBM

    Abstract: A Control Unit is described, including a Processing Unit (12) controlled by a Service Processor (14), and a plurality of adapters (18) exchanging data and/or control signals with said Processing Unit (PU). For ensuring a continuous operation of the Control Unit, the adapters are partitioned into at least two sets (56,58), and the PU is partitioned into at least two parts (26,28), each set of adapters being connected to a dedicated PU part by a primary bus (52,54). Besides, in order to allow the fallback of a set of adapters onto another PU part if the PU part to which it is normally connected is inoperative, a bus switching device (30) is provided. This bus switching device includes at least two Switch parts (38,40), and each Switch part performs the switching of a given set of adapters onto a given PU part, according to the status of each PU part. Therefore, each Switch part is connected to a given set of adapters by a primary bus (52,54), and to the other sets of adapters by secondary busses (46,48) which become active in fallback mode.

    ADAPTER-BUS SWITCH FOR IMPROVING THE AVAILABILITY OF A CONTROL UNIT

    公开(公告)号:CA1305555C

    公开(公告)日:1992-07-21

    申请号:CA564155

    申请日:1988-04-14

    Applicant: IBM

    Abstract: FR 9 86 020 ADAPTER-BUS SWITCH FOR IMPROVING THE AVAILABILITY OF A CONTROL UNIT A Control Unit is described, including a Processing Unit (1.2) controlled by a Service Processor (14), and a plurality of adapters (18) exchanging data and/or control signals with said Processing Unit (PU). For ensuring a continuous operation of the Control Unit, the adapters are partitioned into at least two sets (56,58), and the PU is partitioned into at least two parts (26,28), each set of adapters being connected to a dedicated PU part by a primary bus (52,54). Besides, in order to allow the fallback of a set of adapters onto another PU part if the PU part to which it is normally connected is: inoperative, a bus switching device (30) is provided. This bus switching device includes at least two Switch parts (38,40), and each Switch part performs the switching of a given set of adapters onto a given PU part according to the status of each PU part. Therefore, each Switch part is connected to a given set of adapters by a primary bus 152,54), and to the other sets of adapters by secondary busses (46,48) which become active in fallback mode.

    5.
    发明专利
    未知

    公开(公告)号:DE3780306D1

    公开(公告)日:1992-08-13

    申请号:DE3780306

    申请日:1987-04-22

    Applicant: IBM

    Abstract: A partitioned processing unit is used having two independent processing unit parts (26,28) and a partitioned switching device having two independent switch parts (38,40). Each switch part is associated logically with a corresp. part of the partitioned processing unit. Each processing unit part is connected to an associated group of adapters by a respective primary bus (52,54) and to the group of aoapters of the other unit by a respective secondary bus (46,48). A service processor (14) checks continuously the status of both processing unit parts and if either one fails it controls the bus-switching by operation of the switches (38,40) to maintain all the adaptors connected to whichever processing unit is still working.

    6.
    发明专利
    未知

    公开(公告)号:IT1165335B

    公开(公告)日:1987-04-22

    申请号:IT2695679

    申请日:1979-10-31

    Applicant: IBM

    Abstract: Adapter interfaces (ADAPT) and line driver interfaces (RDVP and RDVC) are divided into subgroups within a pyramid type of architecture. Each subgroup is provided with independent preselection means for determining the path through the pyramid from the CCU BUS to the adapter to be serviced first.

    7.
    发明专利
    未知

    公开(公告)号:AT78114T

    公开(公告)日:1992-07-15

    申请号:AT87430011

    申请日:1987-04-22

    Applicant: IBM

    Abstract: A Control Unit is described, including a Processing Unit (12) controlled by a Service Processor (14), and a plurality of adapters (18) exchanging data and/or control signals with said Processing Unit (PU). For ensuring a continuous operation of the Control Unit, the adapters are partitioned into at least two sets (56,58), and the PU is partitioned into at least two parts (26,28), each set of adapters being connected to a dedicated PU part by a primary bus (52,54). Besides, in order to allow the fallback of a set of adapters onto another PU part if the PU part to which it is normally connected is inoperative, a bus switching device (30) is provided. This bus switching device includes at least two Switch parts (38,40), and each Switch part performs the switching of a given set of adapters onto a given PU part, according to the status of each PU part. Therefore, each Switch part is connected to a given set of adapters by a primary bus (52,54), and to the other sets of adapters by secondary busses (46,48) which become active in fallback mode.

    SYSTEM FOR SELECTING INTERFACES ON A PRIORITY BASIS

    公开(公告)号:CA1124354A

    公开(公告)日:1982-05-25

    申请号:CA337678

    申请日:1979-10-16

    Applicant: IBM

    Abstract: An improved system for selecting interface circuits on a priority basis and applies, in particular, to communication controllers. More particularly, the invention relates to means for controlling the transfers of data via adapters on a priority basis. The system interconnects that make requests for services at differing priority levels and contains a central processing unit including a lens characterized in that it includes dividing the interface circuits into subgroups of a first pyramid stage each provided with an asynchronous preselection of the interface circuit which has the highest priority level within each of the subgroups and an interfacer for each of the subgroups that make up the first stage using one of the interface circuits to make up a second stage of the pyramid.

    10.
    发明专利
    未知

    公开(公告)号:MX169593B

    公开(公告)日:1993-07-14

    申请号:MX1088088

    申请日:1988-03-25

    Applicant: IBM

    Abstract: A Control Unit is described, including a Processing Unit (12) controlled by a Service Processor (14), and a plurality of adapters (18) exchanging data and/or control signals with said Processing Unit (PU). For ensuring a continuous operation of the Control Unit, the adapters are partitioned into at least two sets (56,58), and the PU is partitioned into at least two parts (26,28), each set of adapters being connected to a dedicated PU part by a primary bus (52,54). Besides, in order to allow the fallback of a set of adapters onto another PU part if the PU part to which it is normally connected is inoperative, a bus switching device (30) is provided. This bus switching device includes at least two Switch parts (38,40), and each Switch part performs the switching of a given set of adapters onto a given PU part, according to the status of each PU part. Therefore, each Switch part is connected to a given set of adapters by a primary bus (52,54), and to the other sets of adapters by secondary busses (46,48) which become active in fallback mode.

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