JPS6450151A - Fault tolerant digital data processor for performing improved communication monitoring - Google Patents

Fault tolerant digital data processor for performing improved communication monitoring

Info

Publication number
JPS6450151A
JPS6450151A JP63189575A JP18957588A JPS6450151A JP S6450151 A JPS6450151 A JP S6450151A JP 63189575 A JP63189575 A JP 63189575A JP 18957588 A JP18957588 A JP 18957588A JP S6450151 A JPS6450151 A JP S6450151A
Authority
JP
Japan
Prior art keywords
communication
bus
digital data
data processor
fault tolerant
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
JP63189575A
Other languages
English (en)
Inventor
Efu Batei Kaato
Emu Ramu Jiyosefu
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.)
Ascend Communications Inc
Original Assignee
Stratus Computer Inc
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 Stratus Computer Inc filed Critical Stratus Computer Inc
Publication of JPS6450151A publication Critical patent/JPS6450151A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/2017—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 memory access, memory control or I/O control functionality is redundant
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
    • G06F11/0745—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in an input/output transactions management context
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0793—Remedial or corrective actions
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/14—Error detection or correction of the data by redundancy in operations
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/1604—Error detection or correction of the data by redundancy in hardware where the fault affects the clock signals of a processing unit and the redundancy is at or within the level of clock signal generation hardware
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1625—Error detection by comparing the output signals of redundant hardware in communications, e.g. transmission, interfaces
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/2002—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 interconnections or communication control functionality are redundant
    • G06F11/2005—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 interconnections or communication control functionality are redundant using redundant communication controllers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/2002—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 interconnections or communication control functionality are redundant
    • G06F11/2007—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 interconnections or communication control functionality are redundant using redundant communication media
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
    • G06F13/4221—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus
    • G06F13/423—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus with synchronous protocol
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F11/1666—Error detection or correction of the data by redundancy in hardware where the redundant component is memory or memory area
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Computer Hardware Design (AREA)
  • Bus Control (AREA)
  • Debugging And Monitoring (AREA)
  • Hardware Redundancy (AREA)
JP63189575A 1987-07-29 1988-07-28 Fault tolerant digital data processor for performing improved communication monitoring Pending JPS6450151A (en)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
US7929587A 1987-07-29 1987-07-29
US7922587A 1987-07-29 1987-07-29
US07/079,297 US4926315A (en) 1981-10-01 1987-07-29 Digital data processor with fault tolerant peripheral bus communications
US07/079,223 US4939643A (en) 1981-10-01 1987-07-29 Fault tolerant digital data processor with improved bus protocol
US07/079,218 US4931922A (en) 1981-10-01 1987-07-29 Method and apparatus for monitoring peripheral device communications
US07/368,124 US4974144A (en) 1981-10-01 1989-06-16 Digital data processor with fault-tolerant peripheral interface
US07/368,125 US4974150A (en) 1981-10-01 1989-06-16 Fault tolerant digital data processor with improved input/output controller
CA000603403A CA1323440C (en) 1987-07-29 1989-06-20 Fault tolerant digital data processor with improved communications monitoring
CA000603407A CA1323443C (en) 1987-07-29 1989-06-20 Fault tolerant digital data processor with improved bus protocol
CA000603406A CA1323442C (en) 1987-07-29 1989-06-20 Digital data processor with fault tolerant peripheral bus communications
CA000603404A CA1319754C (en) 1987-07-29 1989-06-20 Fault tolerant digital data processor with improved peripheral device interface
CA000603405A CA1323441C (en) 1987-07-29 1989-06-20 Fault tolerant digital data processor with improved input/output controller

Publications (1)

Publication Number Publication Date
JPS6450151A true JPS6450151A (en) 1989-02-27

Family

ID=40984931

Family Applications (5)

Application Number Title Priority Date Filing Date
JP63189576A Pending JPS6451549A (en) 1987-07-29 1988-07-28 Fault tolerant digital data processor having improved bus protocol
JP63189572A Pending JPS6450149A (en) 1987-07-29 1988-07-28 Digital data processor for performing fault tolerant peripheral device bus communication
JP63189573A Pending JPS6450150A (en) 1987-07-29 1988-07-28 Fault tolerant digital data processor with improved input/output controller
JP63189575A Pending JPS6450151A (en) 1987-07-29 1988-07-28 Fault tolerant digital data processor for performing improved communication monitoring
JP63189574A Pending JPS6454558A (en) 1987-07-29 1988-07-28 Fault tolerant digital data processor with improved peripheral device interface

Family Applications Before (3)

Application Number Title Priority Date Filing Date
JP63189576A Pending JPS6451549A (en) 1987-07-29 1988-07-28 Fault tolerant digital data processor having improved bus protocol
JP63189572A Pending JPS6450149A (en) 1987-07-29 1988-07-28 Digital data processor for performing fault tolerant peripheral device bus communication
JP63189573A Pending JPS6450150A (en) 1987-07-29 1988-07-28 Fault tolerant digital data processor with improved input/output controller

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP63189574A Pending JPS6454558A (en) 1987-07-29 1988-07-28 Fault tolerant digital data processor with improved peripheral device interface

Country Status (4)

Country Link
US (5) US4931922A (ja)
EP (5) EP0301498A3 (ja)
JP (5) JPS6451549A (ja)
CA (5) CA1319754C (ja)

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Also Published As

Publication number Publication date
CA1319754C (en) 1993-06-29
EP0301498A2 (en) 1989-02-01
JPS6454558A (en) 1989-03-02
EP0301501A2 (en) 1989-02-01
CA1323440C (en) 1993-10-19
EP0301499A2 (en) 1989-02-01
JPS6451549A (en) 1989-02-27
EP0301501A3 (en) 1990-11-28
CA1323441C (en) 1993-10-19
EP0301500A2 (en) 1989-02-01
JPS6450149A (en) 1989-02-27
US4974144A (en) 1990-11-27
US4939643A (en) 1990-07-03
EP0301497A3 (en) 1990-10-31
US4974150A (en) 1990-11-27
CA1323443C (en) 1993-10-19
CA1323442C (en) 1993-10-19
EP0301498A3 (en) 1990-10-31
EP0301500A3 (en) 1990-11-07
EP0301497A2 (en) 1989-02-01
EP0301499A3 (en) 1990-11-07
JPS6450150A (en) 1989-02-27
US4926315A (en) 1990-05-15
US4931922A (en) 1990-06-05

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