GB1238161A - - Google Patents

Info

Publication number
GB1238161A
GB1238161A GB1238161DA GB1238161A GB 1238161 A GB1238161 A GB 1238161A GB 1238161D A GB1238161D A GB 1238161DA GB 1238161 A GB1238161 A GB 1238161A
Authority
GB
United Kingdom
Prior art keywords
unit
bits
units
processing unit
gate
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.)
Expired
Application number
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 filed Critical
Publication of GB1238161A publication Critical patent/GB1238161A/en
Expired 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
    • G06F11/202—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 where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2028—Failover techniques eliminating a faulty processor or activating a spare
    • 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
    • G06F11/202—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 where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources
    • 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
    • G06F11/202—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 where processing functionality is redundant
    • G06F11/2035—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 where processing functionality is redundant without idle spare hardware
    • 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
    • G06F11/202—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 where processing functionality is redundant
    • G06F11/2046—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 where processing functionality is redundant where the redundant components share persistent storage
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G06F15/177—Initialisation or configuration control

Abstract

1,238,161. Data processing. INTERNATIONAL BUSINESS MACHINES CORP. 20 Feb., 1969, No. 9129/69. Heading G4A. A data processing system comprises two or more processing units and two or more peripheral (e.g. memory) units, and configuration control means in each unit responsive to a pattern of signals, including a gate bit associated with each unit, from one or other of the processing units to cause the associated unit to assume one of two available configuration states so as to be configured into a subsystem including other units having gate bits of a predetermined value in the pattern, or to be configured out of such a subsystem, the state assumed being determined by the value of the gate bit associated with the unit in which the configuration control means resides. The configuration control means in each unit includes a configuration control register having a gate bit for each other unit (to specify whether the other unit may communicate with the given unit) and a reconfiguration bit for each processing unit (specifying whether that processing unit can alter the register contents, i.e. reconfigure the unit). Any processing unit, under supervisor programme control, can reconfigure the system by sending a "system control out" signal accompanied by first bits equal in number to the number of units in the system and second bits equal in number to the number of processing units in the system. Each unit whose reconfiguration bits permit it to be reconfigured by the sending processing unit, responds to the state 1 or 0 of that one of the first bits relating to it to set the other first bits in true or inverse form respectively into its configuration control register as the gate bits, and sets the second bits into the register as the reconfiguration bits. The register, in each processing unit, can also include a standby bit used in reconfiguring units configured with a master processing unit (in which the bit is 0) to be configured instead with a slave processing unit (in which the bit is 1) on occurrence of an unrecoverable-error interrupt in the master processing unit. Manual facilities for reconfiguration are also provided. Any processing unit can issue (a) a system reset signal which will cause all units to turn on the reconfiguration . bits (to permit reconfiguration by any processing unit) and turn off the gate bits in their configuration control registers and reset the units, or (b) a sub-system reset signal which will reset the units whose gate bits allow them to respond to the issuing processing unit, but the configuration control registers are not altered. Reference has been directed by the Comptroller to Specification 1,108,809.
GB1238161D 1969-02-20 1969-02-20 Expired GB1238161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB912969 1969-02-20

Publications (1)

Publication Number Publication Date
GB1238161A true GB1238161A (en) 1971-07-07

Family

ID=9865918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238161D Expired GB1238161A (en) 1969-02-20 1969-02-20

Country Status (6)

Country Link
JP (1) JPS501853B1 (en)
CA (1) CA939073A (en)
DE (1) DE2007041A1 (en)
FR (1) FR2035679A5 (en)
GB (1) GB1238161A (en)
NL (1) NL7002382A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768074A (en) * 1972-05-12 1973-10-23 Burroughs Corp Multiprocessing system having means for permissive coupling of different subsystems
JPS5489459U (en) * 1977-12-08 1979-06-25
GB8528892D0 (en) * 1985-11-23 1986-01-02 Int Computers Ltd Multi-node data processing system
US4970724A (en) * 1988-12-22 1990-11-13 Hughes Aircraft Company Redundancy and testing techniques for IC wafers

Also Published As

Publication number Publication date
NL7002382A (en) 1970-08-24
CA939073A (en) 1973-12-25
DE2007041A1 (en) 1970-09-10
JPS501853B1 (en) 1975-01-22
FR2035679A5 (en) 1970-12-18

Similar Documents

Publication Publication Date Title
GB1108540A (en) Process back-up system
GB1119421A (en) Data processing system
GB1318233A (en) Data processing systems
GB1063141A (en) Automatic interrupt system for a data processor
GB1195268A (en) A Computer System
US5291605A (en) Arrangement and a method for handling interrupt requests in a data processing system in a virtual machine mode
GB1026890A (en) Computer organization
ES458224A1 (en) Input/output interface logic for concurrent operations
ES438727A1 (en) Input/output port control
GB1069480A (en) Memory system
EP0173070A3 (en) Error detection, isolation and recovery apparatus for a multiprocessor array
GB1177863A (en) Improvements in and relating to Digital Data Computer Systems
GB1308497A (en) Data processing arrangements
US3651480A (en) Program controlled data processing system
GB1411882A (en) Methods and apparatus for control of data processing systems
ES433379A1 (en) Multi-unit equipment maintenance system
GB1238161A (en)
GB1010179A (en) Data processing system
MY107293A (en) Programmable interrupt controller.
US3638194A (en) Fixed memory apparatus
GB1448890A (en) Failsoft peripheral exhange
GB1170587A (en) Data Processing System
GB1451349A (en) Data processing systems
GB1389502A (en) Data processing systems
ES426725A1 (en) Data processing system

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee