JPS59200352A - System switching controller - Google Patents

System switching controller

Info

Publication number
JPS59200352A
JPS59200352A JP58074750A JP7475083A JPS59200352A JP S59200352 A JPS59200352 A JP S59200352A JP 58074750 A JP58074750 A JP 58074750A JP 7475083 A JP7475083 A JP 7475083A JP S59200352 A JPS59200352 A JP S59200352A
Authority
JP
Japan
Prior art keywords
input
output switching
output
switching
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP58074750A
Other languages
Japanese (ja)
Inventor
Haruo Kohama
小浜　晴雄
Seijiro Tajima
多嶋　清次郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP58074750A priority Critical patent/JPS59200352A/en
Publication of JPS59200352A publication Critical patent/JPS59200352A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Hardware Redundancy (AREA)

Abstract

PURPOSE:To simplify the processing by switching an input/output switch device independently for each device, each group or en bloc. CONSTITUTION:The input/output switch information 20 given from a central processor is stored in a register 101 in a system switch controller 1. An input/ output switch device indicating circuit 103 decodes an address part 203 of the information 20 stored in the register 101 and then gives an indication to a switch control signal transmission circuit 104 to send an input/output switch control signal only to the input/output switch device that is designated by lower two bits for example. While an input/output switch information transmission circuit 102 informs that the input/output switching is carried out.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は中央処理装置などの処理装置、かちの指示に基
き、入出力切替装置に対して入出力切替制御信号を送っ
てシステム構成の切替えを行うシステム切替制御装置に
関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention switches the system configuration by sending an input/output switching control signal to an input/output switching device based on instructions from a processing unit such as a central processing unit. The present invention relates to a system switching control device that performs system switching.

〔従来技術〕[Prior art]

従来、この種のシステム切替制御装置は、処理装置から
の入出力切替え指示により、該システム切替制御装置に
接続される全ての入出力切替装置に対して入出力切替制
御信号を送出しているため、入出力切替えの指示を行う
と、必ずサービスが中断されるという問題があった。即
ち、成る入出力切替装置に接続されている１つの入出力
装置が障害となり、予備入出力装置との切替えが必要に
なった時、罹障入出カ装置を含む入出力切替装置だけの
切替えは行われず、全ての入出力装置や回線が一括して
切替えられてしまうため、一時サービスが中断される。Conventionally, this type of system switching control device sends an input/output switching control signal to all input/output switching devices connected to the system switching control device in response to an input/output switching instruction from a processing device. , there was a problem in that the service was always interrupted when an input/output switching instruction was issued. In other words, when one input/output device connected to the input/output switching device becomes faulty and it is necessary to switch to a backup input/output device, switching only the input/output switching device including the affected input/output device is necessary. This is not done and all input/output devices and lines are switched at once, resulting in temporary service interruption.

又、複数の処理装置がシステム切替制御装置に接続され
ている場合、一つの処理装置が入出力切替え指示を出し
、入出力切替装置の切替えが行われても、従来のシステ
ム切替制御装置では、この切替えが他の処理装置に通知
されなかった。このため、他の処理装置上のプログラム
によるアクセス中の装置が切替えられて異常終了となっ
たり、あるいは、切替え後の入出力装置を切替え前の入
出力装置と見做してアクセスし、その入出力装置に保持
されている内容を破壊してしまうという問題があった。Furthermore, when multiple processing devices are connected to a system switching control device, even if one processing device issues an input/output switching instruction and the input/output switching devices are switched, the conventional system switching control device This switching was not notified to other processing devices. As a result, the device being accessed by a program on another processing device may be switched and the device may terminate abnormally, or the input/output device after switching may be accessed by treating it as the input/output device before switching. There is a problem in that the contents held in the output device are destroyed.

〔発明の目的〕[Purpose of the invention]

本発明は上記の問題点を解決するため、処理装置からの
入出力切替指示及び切替情報に基き、入出力切替側ｆｌ
ｌ信号を送出する入出力切替装置を選択するとともに、
他の処理装置に対して入出力切替えが行われたことを通
知するようにしたシステム切替制御装置を提供すること
にある。In order to solve the above problems, the present invention provides an input/output switching side fl based on an input/output switching instruction and switching information from a processing device.
In addition to selecting the input/output switching device that sends the l signal,
An object of the present invention is to provide a system switching control device that notifies other processing devices that input/output switching has been performed.

〔発明の実施例〕[Embodiments of the invention]

第１図は情報処理システムの全体構成図で、システム切
替制御装置１に２台の中央処理装置２−１．２−２と４
台の入出力切替装置３−１．３−２．３−３．３−４が
接続される例を示している。Figure 1 is an overall configuration diagram of an information processing system, in which a system switching control device 1 has two central processing units 2-1, 2-2 and 4.
An example is shown in which three input/output switching devices 3-1.3-2.3-3.3-4 are connected.

３−１と３−２は回線の切替えを行う入出力切替装置１
．３−３と３−４は入出力装置の切替えを行う入出力切
替装置であり、これらの入出力切替装置群は両中央処理
装置２−１．２−２に接続されている。3-1 and 3-2 are input/output switching devices 1 that switch lines.
．． 3-3 and 3-4 are input/output switching devices for switching input/output devices, and these input/output switching device groups are connected to both central processing units 2-1 and 2-2.

第２図にシステム切替制御装置１の一実施例のブロック
図を示す。第２図において、肋は中央処理装置２−１あ
るいは２−２から与えられる入出力切替情報で、切替え
を指示するコード部２０１、回線あるいは入出力装置を
いずれの中央処理装置と接続するかを示す切替状態フラ
グ２０２、切替えの対象となる入出力切替装置を指定す
るアドレス部２０３よりなる。１０１は入出力切替情報
側を保持するレジスタ、１０２は他の中央処理装置に対
して入出力切替情報２１を送出する入出力切替情報送出
回路、１０３は制御すべ（入出力切替装置を指示する入
出力切替装置指示回路、１０４は指示回路１０３で指示
された入出力切替装置に対して入出力切替制御信号を送
出する切替制御信号送出回路である。FIG. 2 shows a block diagram of an embodiment of the system switching control device 1. In FIG. 2, the ribs indicate input/output switching information given from the central processing unit 2-1 or 2-2, a code section 201 that instructs switching, and a code section 201 that indicates which central processing unit the line or input/output device should be connected to. It consists of a switching state flag 202 indicating the input/output switching device to be switched, and an address section 203 specifying the input/output switching device to be switched. 101 is a register that holds the input/output switching information side, 102 is an input/output switching information sending circuit that sends out the input/output switching information 21 to other central processing units, and 103 is an input/output switching information transmitting circuit that instructs the input/output switching device. An output switching device instruction circuit 104 is a switching control signal sending circuit that sends an input/output switching control signal to the input/output switching device instructed by the instruction circuit 103.

本実施例の場合、入出力切替情報側のアドレス部２０３
は４ビツト構成をとり、上位２ビツトと下位２ビツトは
それぞれ第３図に示すような意味を持つとする。勿論、
これは単なる一例にすぎず、これ以外のビット構成、衣
現形式が適用可能であることは云うまでもない。In the case of this embodiment, the address section 203 on the input/output switching information side
has a 4-bit configuration, and the upper 2 bits and lower 2 bits each have the meanings shown in FIG. Of course,
This is just an example, and it goes without saying that other bit configurations and representation formats are applicable.

さて、例えば中央処理装置２−１から入出力切替情報側
が送られて（ると、システム切替制御装置１は該入出力
切替情報２ｏをレジスタ１０１に格納する。入出力切替
装置指示回路１０３は、レジスタ１０１に格納された入
出力切替情報（９）のアドレス部２０３をデコードして
入出力切替装置を選択し、例えはアドレス部２０３の上
位２ビツトが００”の場合、）下位２ヒツトで指定され
た入出力切替制御信号してのみ入出力切替制御信号を送
出するように切替制御信号送出回路１０４に指示する。Now, for example, when the input/output switching information side is sent from the central processing unit 2-1, the system switching control device 1 stores the input/output switching information 2o in the register 101.The input/output switching device instruction circuit 103 The input/output switching device is selected by decoding the address field 203 of the input/output switching information (9) stored in the register 101. For example, if the upper two bits of the address field 203 are 00'', the lower two bits are specified. The switching control signal sending circuit 104 is instructed to send out an input/output switching control signal only when the input/output switching control signal is input/output switching control signal.

又、アドレス部２０３の上位２ビツトが”　ｏ　ｏ　”
以外の場合は下位２ビツトを無視し、例えば上位２ビツ
トが”’　０１　”の場合は回線が接続されている全て
の入出力切替装置（第１図では３−１．３−２）Ｋ対し
て、“１０＃の場合は入出力装置が接続されている全て
の入出力切替装置（第１図では３−３゜３−４）に対し
て、”　１１　’の場合は全ての入出力切替装置（第１
図では３−１〜３−４）に対して、それぞれ入出力切替
制御信号を送出するように切替制御信号送出回路１０４
に指示する。切替制御信号送出回路１０４は、入出力切
替装置指示回路１０３から指示された１台あるいは複数
台の入出力切替装置に対して、入出力切替情報Ｚの切替
コード部２０１と切替状態フラグ部２０２からなる入出
力切替制御信号を送出する。この切替制御信号を受は取
った入出力切替装置では、その指示に従って中央処理装
置と回線あるいは入出力装置間の接続の切替えを行う。Also, the upper two bits of the address field 203 are "o o"
In other cases, the lower 2 bits are ignored. For example, if the upper 2 bits are "'01", all input/output switching devices (3-1.3-2 in Figure 1) K to which the line is connected are In the case of "10#", all the input/output switching devices to which the input/output devices are connected (3-3°3-4 in Figure 1) are connected, and in the case of "11', all the input/output switching devices are connected. Device (first
In the figure, a switching control signal sending circuit 104 is configured to send input/output switching control signals to 3-1 to 3-4), respectively.
instruct. The switching control signal sending circuit 104 transmits information from the switching code section 201 and switching state flag section 202 of the input/output switching information Z to one or more input/output switching devices instructed by the input/output switching device instruction circuit 103. The input/output switching control signal is sent out. The input/output switching device that receives this switching control signal switches the connection between the central processing unit and the line or input/output device according to the instruction.

一方、入出力切替情報送出回路１０２は、他の中央処理
装置（第１図では２−２）に対してレジスタ１０１の内
容を情報２１としてそのま又送り、入出力切替えが行わ
れたことを通知する。中央処理装置２−２は、この情報
２１によって中央処理装置２−１がシステム切替制御装
置ｌに指示した切替内容を知る。On the other hand, the input/output switching information sending circuit 102 sends the contents of the register 101 as information 21 to another central processing unit (2-2 in FIG. 1) to notify that the input/output switching has been performed. Notice. The central processing unit 2-2 uses this information 21 to know the switching details that the central processing unit 2-1 has instructed the system switching control device l.

この様に、本発明のシステム切替制御装置は、処理装置
からの入出力切替え指示の受信時、指示と同時に送られ
て来る入出力切替装置のアドレス指定により、個々の入
出力切替装置を単独で切替えるべきか、又はいくつかの
入出力切替装置を一括して切替えるべきか、又は全ての
入出力切替装置を一括して切替えるべきかと言った区別
が可能である。また、一方の処理装置からの入出力切替
え指示を、他の処理装置に送ることにより、入出力切替
装置の状態の変化を他の処理装置上のプログラムが認識
することができる。In this way, when the system switching control device of the present invention receives an input/output switching instruction from a processing device, it can independently switch each input/output switching device by specifying the address of the input/output switching device that is sent at the same time as the instruction. It is possible to distinguish whether to switch, several input/output switching devices at once, or all input/output switching devices at once. Further, by sending an input/output switching instruction from one processing device to another processing device, a program on the other processing device can recognize a change in the state of the input/output switching device.

なお、本実施例では、一方の処理装置からの入出力切替
情報をそのまま他の処理装置に送出するどとにより、入
出力切替装置の状態の変化を通知したが、通知方法とし
ては、システム切替制御装置が一つの処理装置からの入
出力切替情報を受信した時、他処理装置に対して割込み
信号を送出し、割込みを一受取った処理装置上のプログ
ラムが入出力切替装置の切替え状態をチェックするとし
ても良い。In this embodiment, the change in the state of the input/output switching device is notified by sending the input/output switching information from one processing device to the other processing device as is, but the notification method is based on system switching. When the control device receives input/output switching information from one processing device, it sends an interrupt signal to the other processing device, and the program on the processing device that receives the interrupt checks the switching status of the input/output switching device. It's fine if you do.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明によれば、入出力切替装置
の切替えが、一つの入出力切替装置毎に独立に、あるい
は入出力切替装置に接続される入出力機器の種類（例え
ば回線や入出力装置）に対応してグループ毎に、または
全ての入出力切替装置を一括して行えるため、障害とな
った入出力機器だけ切替えるべきか、又は入出力装置は
そのままで回線だけ切替えるべきか等の処理が容易に実
現可能となる。また、一つの処理装置から入出力切替え
指示があったことが他の処理装置にも通知されるため、
処理装置間での入出力切替装置の状態管理情報の矛盾を
無くすことができる。As explained above, according to the present invention, the input/output switching device can be switched independently for each input/output switching device, or the type of input/output device (for example, line or input/output device) connected to the input/output switching device Since it can be done for each group or all input/output switching devices at once depending on the input/output device (output device), should you switch only the failed input/output device, or should you switch only the line without changing the input/output device? processing can be easily realized. In addition, other processing devices are notified that there is an input/output switching instruction from one processing device.
It is possible to eliminate inconsistencies in state management information of input/output switching devices between processing devices.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は情報処理システムの全体構成図、第２図は本発
明にか又るシステム切替制御装置の一実施例のブロック
図、第３図は入出力切替情報のア□“□ドレス部の形式
例を示す図である。 １・・・システム切替制御装置、２−１．２−２−・・
中央処理装置、　３−１〜３−４・・・入出力切替装置
、旬、２１・・・入出力切替情報、　　１０１・・・レ
ジスタ、１０２・・・入出力切替情報送出回路、　１０
３・・・入出力切替装置指示回路、　　１０４・・・切
替制御信号送出回路。 代理人弁理士　　鈴　木　　　誠　　　′；第２図 ２０ ↓ ７−出か埒Ｈ（へFig. 1 is an overall configuration diagram of an information processing system, Fig. 2 is a block diagram of an embodiment of the system switching control device according to the present invention, and Fig. 3 is a block diagram of an embodiment of the system switching control device according to the present invention. It is a diagram showing a format example. 1... System switching control device, 2-1.2-2-...
Central processing unit, 3-1 to 3-4... Input/output switching device, 21... Input/output switching information, 101... Register, 102... Input/output switching information sending circuit, 10
3... Input/output switching device instruction circuit, 104... Switching control signal sending circuit. Representative Patent Attorney Makoto Suzuki'

Claims (2)

【特許請求の範囲】[Claims] （１）処理装置からの入出力切替情報に基き、処理装置
と回線や入出力装置間の接続の切替えを行５人出力切替
装置の切替動作を制御するシステム切替制御装置におい
て、前記入出力切替情報を格納するレジスタと、該レジ
スタに格納された入出力切替情報をデコーして１つある
いはそれ以上の任意の入出力切替装置を選択する手段と
、前記選択された入出力切替装置に対して入出力切替制
御信号を送出する手段とを有することを特徴とするシス
テム切替制御装置。(1) In a system switching control device that controls the switching operation of a five-person output switching device that switches connections between the processing device and lines and input/output devices based on input/output switching information from the processing device, the input/output switching a register for storing information; a means for decoding the input/output switching information stored in the register to select one or more arbitrary input/output switching devices; and for the selected input/output switching device. 1. A system switching control device comprising means for sending an input/output switching control signal. （２）前記入出力切替装置に入出力切替制御信号を送出
した際、入出力切替情報を出した処理装置を除く他の処
理装置に該当入出力切替装置の状態が変化したことを連
絡するようにしたことを特徴とする特許請求の範囲第１
項記載のシステム切替制御装置。(2) When the input/output switching device sends out an input/output switching control signal, other processing devices other than the processing device that issued the input/output switching information are notified of the change in the state of the corresponding input/output switching device. Claim 1 characterized in that
The system switching control device described in .
JP58074750A 1983-04-27 1983-04-27 System switching controller Pending JPS59200352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58074750A JPS59200352A (en) 1983-04-27 1983-04-27 System switching controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58074750A JPS59200352A (en) 1983-04-27 1983-04-27 System switching controller

Publications (1)

Publication Number Publication Date
JPS59200352A true JPS59200352A (en) 1984-11-13

Family

ID=13556243

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58074750A Pending JPS59200352A (en) 1983-04-27 1983-04-27 System switching controller

Country Status (1)

Country Link
JP (1) JPS59200352A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752788A (en) * 1994-04-19 1995-02-28 Nissei Ltd Automatic unmanned trolley conveyor type carrying equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5341957A (en) * 1976-09-29 1978-04-15 Hitachi Ltd Automatic switching control unit
JPS56166524A (en) * 1980-05-26 1981-12-21 Hitachi Ltd Duplex peripheral controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5341957A (en) * 1976-09-29 1978-04-15 Hitachi Ltd Automatic switching control unit
JPS56166524A (en) * 1980-05-26 1981-12-21 Hitachi Ltd Duplex peripheral controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752788A (en) * 1994-04-19 1995-02-28 Nissei Ltd Automatic unmanned trolley conveyor type carrying equipment

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