CA2022259A1 - Method and apparatus for controlling initiation of bootstrap loading - Google Patents

Method and apparatus for controlling initiation of bootstrap loading

Info

Publication number
CA2022259A1
CA2022259A1 CA2022259A CA2022259A CA2022259A1 CA 2022259 A1 CA2022259 A1 CA 2022259A1 CA 2022259 A CA2022259 A CA 2022259A CA 2022259 A CA2022259 A CA 2022259A CA 2022259 A1 CA2022259 A1 CA 2022259A1
Authority
CA
Canada
Prior art keywords
bootstrap loading
zones
zone
computing
osr
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.)
Granted
Application number
CA2022259A
Other languages
French (fr)
Other versions
CA2022259C (en
Inventor
William Bruckert
David Kovalcin
Thomas Dale Bissett
John Munzer
Dennis Mazur
Peter Rhoades Mott, Jr.
Glenn Alan Dearth
Carlos Alonso
Ann Katan
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.)
Digital Equipment Corp
Original Assignee
William Bruckert
David Kovalcin
Thomas Dale Bissett
John Munzer
Dennis Mazur
Peter Rhoades Mott, Jr.
Glenn Alan Dearth
Carlos Alonso
Ann Katan
Digital Equipment Corporation
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 William Bruckert, David Kovalcin, Thomas Dale Bissett, John Munzer, Dennis Mazur, Peter Rhoades Mott, Jr., Glenn Alan Dearth, Carlos Alonso, Ann Katan, Digital Equipment Corporation filed Critical William Bruckert
Publication of CA2022259A1 publication Critical patent/CA2022259A1/en
Application granted granted Critical
Publication of CA2022259C publication Critical patent/CA2022259C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1633—Error detection by comparing the output of redundant processing systems using mutual exchange of the output between the redundant processing components
    • 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
    • G06F11/08—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; 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
    • G06F11/1604—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; 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
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/165—Error detection by comparing the output of redundant processing systems with continued operation after detection of the error
    • 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
    • G06F11/1658—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit
    • 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
    • G06F11/1666—Error detection or correction of the data by redundancy in hardware where the redundant component is memory or memory area
    • G06F11/167—Error detection by comparing the memory output
    • 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
    • G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
    • G06F11/1679—Temporal synchronisation or re-synchronisation of redundant processing components at clock signal level
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/4401—Bootstrapping
    • 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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1405—Saving, restoring, recovering or retrying at machine instruction level
    • 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
    • G06F11/1608—Error detection by comparing the output signals of redundant 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
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1616—Error detection by comparing the output signals of redundant hardware where the redundant component is an I/O device or an adapter therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/845—Systems in which the redundancy can be transformed in increased performance

Abstract

ABSTRACT

Method and apparatus for controlling initiating of bootstrap loading in a computer system having first and second discrete computing zones is disclosed. Each computing zone includes a status register for storing an operating system run (OSR) bit indicating that the zone has initiated bootstrap loading. A cable connects the computing zones to allow the first and second zones to read the status registers in the second and first zones, respectively. A CPU in each zone only enables initiation of bootstrap loading if the OSR bit in the other zone is not set.
CA002022259A 1989-08-01 1990-07-30 Method and apparatus for controlling initiation of bootstrap loading Expired - Fee Related CA2022259C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/388,090 US5068780A (en) 1989-08-01 1989-08-01 Method and apparatus for controlling initiation of bootstrap loading of an operating system in a computer system having first and second discrete computing zones
US07/388,090 1989-08-01

Publications (2)

Publication Number Publication Date
CA2022259A1 true CA2022259A1 (en) 1991-02-02
CA2022259C CA2022259C (en) 1994-03-22

Family

ID=23532639

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002022259A Expired - Fee Related CA2022259C (en) 1989-08-01 1990-07-30 Method and apparatus for controlling initiation of bootstrap loading

Country Status (4)

Country Link
US (1) US5068780A (en)
EP (1) EP0415548A3 (en)
JP (1) JPH03182938A (en)
CA (1) CA2022259C (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3275261B2 (en) * 1990-03-09 2002-04-15 セイコーエプソン株式会社 Information processing device
DE69130667T2 (en) * 1990-12-06 1999-05-06 Tandberg Data Data storage system with removable media for loading a control program from the removable media
JP2986299B2 (en) * 1992-04-15 1999-12-06 インターナショナル・ビジネス・マシーンズ・コーポレイション Peripheral device connection detection system
FR2692696A1 (en) * 1992-06-19 1993-12-24 Sgs Thomson Microelectronics Method for loading a program into a program memory associated with a processor.
US5361358A (en) * 1992-08-07 1994-11-01 International Business Machines Corporation System and method for installing program code for operation from multiple bootable operating systems
US5448716A (en) * 1992-10-30 1995-09-05 International Business Machines Corporation Apparatus and method for booting a multiple processor system having a global/local memory architecture
US5588112A (en) * 1992-12-30 1996-12-24 Digital Equipment Corporation DMA controller for memory scrubbing
US5539345A (en) * 1992-12-30 1996-07-23 Digital Equipment Corporation Phase detector apparatus
JP2812189B2 (en) * 1994-02-10 1998-10-22 日本電気株式会社 How to download the program
US6381694B1 (en) * 1994-02-18 2002-04-30 Apple Computer, Inc. System for automatic recovery from software problems that cause computer failure
US5652886A (en) * 1994-10-03 1997-07-29 United Technologies Corporation System for loading a boot program into an initially blank programmable memory of a microprocessor using state machine and serial bus
US5568641A (en) * 1995-01-18 1996-10-22 Hewlett-Packard Company Powerfail durable flash EEPROM upgrade
US5754863A (en) * 1995-01-20 1998-05-19 Redcom Laboratories, Inc. System for downloading program code to a microprocessor operative as a slave to a master microprocessor
JP2830857B2 (en) * 1996-09-09 1998-12-02 三菱電機株式会社 Data storage system and data storage management method
US5815571A (en) * 1996-10-28 1998-09-29 Finley; Phillip Scott Computer system with secured data paths and method of protection
US8312529B2 (en) 1996-11-29 2012-11-13 Ellis Frampton E Global network computers
US7805756B2 (en) 1996-11-29 2010-09-28 Frampton E Ellis Microchips with inner firewalls, faraday cages, and/or photovoltaic cells
US8225003B2 (en) 1996-11-29 2012-07-17 Ellis Iii Frampton E Computers and microchips with a portion protected by an internal hardware firewall
US7634529B2 (en) 1996-11-29 2009-12-15 Ellis Iii Frampton E Personal and server computers having microchips with multiple processing units and internal firewalls
US7926097B2 (en) 1996-11-29 2011-04-12 Ellis Iii Frampton E Computer or microchip protected from the internet by internal hardware
US7506020B2 (en) 1996-11-29 2009-03-17 Frampton E Ellis Global network computers
US20050180095A1 (en) 1996-11-29 2005-08-18 Ellis Frampton E. Global network computers
US6167428A (en) 1996-11-29 2000-12-26 Ellis; Frampton E. Personal computer microprocessor firewalls for internet distributed processing
US6725250B1 (en) * 1996-11-29 2004-04-20 Ellis, Iii Frampton E. Global network computers
US5983371A (en) * 1997-07-11 1999-11-09 Marathon Technologies Corporation Active failure detection
US7096358B2 (en) * 1998-05-07 2006-08-22 Maz Technologies, Inc. Encrypting file system
US6973517B1 (en) 2000-08-31 2005-12-06 Hewlett-Packard Development Company, L.P. Partition formation using microprocessors in a multiprocessor computer system
US6810478B1 (en) 2000-12-12 2004-10-26 International Business Machines Corporation System for remote booting of muntliple operating systems using chained bootstrap mechanism in a network
KR100421953B1 (en) * 2001-07-25 2004-03-12 엘지전자 주식회사 Apparatus and method for sharing bootup program among control units in distributed transmission system
US7089413B2 (en) * 2003-03-05 2006-08-08 Hewlett-Packard Development Company, L.P. Dynamic computer system reset architecture
US7356680B2 (en) * 2005-01-22 2008-04-08 Telefonaktiebolaget L M Ericsson (Publ) Method of loading information into a slave processor in a multi-processor system using an operating-system-friendly boot loader
KR100729205B1 (en) * 2005-12-12 2007-06-19 삼성전자주식회사 Apparatus and method for automatic boot error recovery in convergence terminal
US8125796B2 (en) 2007-11-21 2012-02-28 Frampton E. Ellis Devices with faraday cages and internal flexibility sipes
US8429735B2 (en) 2010-01-26 2013-04-23 Frampton E. Ellis Method of using one or more secure private networks to actively configure the hardware of a computer or microchip
KR20140099016A (en) * 2013-02-01 2014-08-11 삼성전자주식회사 Eletronic device and booting method thereof
EP4002122A1 (en) * 2020-11-16 2022-05-25 Valeo Comfort and Driving Assistance Vehicle network for managing a boot integrity failure

Family Cites Families (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT285689B (en) * 1968-03-29 1970-11-10 Siemens Ag Centrally controlled switching system for telecommunications, in particular telephone technology
US3665173A (en) * 1968-09-03 1972-05-23 Ibm Triple modular redundancy/sparing
US3864670A (en) * 1970-09-30 1975-02-04 Yokogawa Electric Works Ltd Dual computer system with signal exchange system
SE347826B (en) * 1970-11-20 1972-08-14 Ericsson Telefon Ab L M
FR2182259A5 (en) * 1972-04-24 1973-12-07 Cii
US3898621A (en) * 1973-04-06 1975-08-05 Gte Automatic Electric Lab Inc Data processor system diagnostic arrangement
US4099241A (en) * 1973-10-30 1978-07-04 Telefonaktiebolaget L M Ericsson Apparatus for facilitating a cooperation between an executive computer and a reserve computer
US4031372A (en) * 1973-11-06 1977-06-21 Westinghouse Electric Corporation System for manually or automatically transferring control between computers without power generation disturbance in an electric power plant or steam turbine operated by a multiple computer control system
CH623669A5 (en) * 1973-11-14 1981-06-15 Agie Ag Ind Elektronik
US3873819A (en) * 1973-12-10 1975-03-25 Honeywell Inf Systems Apparatus and method for fault-condition signal processing
IT1014277B (en) * 1974-06-03 1977-04-20 Cselt Centro Studi Lab Telecom CONTROL SYSTEM OF PROCESS COMPUTERS OPERATING IN PARALLEL
US4313160A (en) * 1976-08-17 1982-01-26 Computer Automation, Inc. Distributed input/output controller system
US4228496A (en) * 1976-09-07 1980-10-14 Tandem Computers Incorporated Multiprocessor system
US4099234A (en) * 1976-11-15 1978-07-04 Honeywell Information Systems Inc. Input/output processing system utilizing locked processors
SE397013B (en) * 1976-12-17 1977-10-10 Ellemtel Utvecklings Ab METHOD AND DEVICE FOR TRANSFERRING DATA INFORMATION TO TWO PARALLEL WORKING COMPUTER PARTS
US4358823A (en) * 1977-03-25 1982-11-09 Trw, Inc. Double redundant processor
US4141066A (en) * 1977-09-13 1979-02-20 Honeywell Inc. Process control system with backup process controller
US4153318A (en) * 1977-10-17 1979-05-08 Square D Company Bus stab for panelboard assembly
JPS6016664B2 (en) * 1977-10-28 1985-04-26 豊田工機株式会社 data transfer device
US4403282A (en) * 1978-01-23 1983-09-06 Data General Corporation Data processing system using a high speed data channel for providing direct memory access for block data transfers
DE2813383A1 (en) * 1978-03-28 1979-10-11 Siemens Ag DATA TRANSMITTING/RECEIVING EQUIPMENT WITH PARALLEL/SERIAL AND SERIAL/PARALLEL CHARACTER CONVERSION, IN PARTICULAR FOR DATA EXCHANGE BETWEEN COMMUNICATING DATA PROCESSING SYSTEMS
GB2019622B (en) * 1978-04-14 1982-04-07 Lucas Industries Ltd Digital computing apparatus
US4200226A (en) * 1978-07-12 1980-04-29 Euteco S.P.A. Parallel multiprocessing system for an industrial plant
US4270168A (en) * 1978-08-31 1981-05-26 United Technologies Corporation Selective disablement in fail-operational, fail-safe multi-computer control system
US4268902A (en) * 1978-10-23 1981-05-19 International Business Machines Corporation Maintenance interface for a service processor-central processing unit computer system
US4495571A (en) * 1979-01-31 1985-01-22 Honeywell Information Systems Inc. Data processing system having synchronous bus wait/retry cycle
US4245344A (en) * 1979-04-02 1981-01-13 Rockwell International Corporation Processing system with dual buses
US4253147A (en) * 1979-04-09 1981-02-24 Rockwell International Corporation Memory unit with pipelined cycle of operations
US4377843A (en) * 1979-04-19 1983-03-22 Wescom Switching, Inc. Data distribution interface
DE2920994A1 (en) * 1979-05-23 1980-11-27 Siemens Ag DATA SEND / RECEIVER DEVICE WITH PARALLEL / SERIAL AND SERIAL / PARALLEL CHARACTERS CONVERSION, IN PARTICULAR FOR DATA EXCHANGE BETWEEN COMMUNICATING DATA PROCESSING SYSTEMS
DE2926292A1 (en) * 1979-06-29 1981-01-08 Harnischfeger Gmbh PARTICULARLY MOBILE TELESCOPIC BOOM CRANE
US4428044A (en) * 1979-09-20 1984-01-24 Bell Telephone Laboratories, Incorporated Peripheral unit controller
US4363125A (en) * 1979-12-26 1982-12-07 International Business Machines Corporation Memory readback check method and apparatus
US4430704A (en) * 1980-01-21 1984-02-07 The United States Of America As Represented By The Secretary Of The Navy Programmable bootstrap loading system
DE3003291C2 (en) * 1980-01-30 1983-02-24 Siemens AG, 1000 Berlin und 8000 München Two-channel data processing arrangement for railway safety purposes
US4321666A (en) * 1980-02-05 1982-03-23 The Bendix Corporation Fault handler for a multiple computer system
FR2477809B1 (en) * 1980-03-10 1987-08-21 Jeumont Schneider SYSTEM FOR FAST TRANSMISSION OF MESSAGES BETWEEN COMPUTERS
US4365293A (en) * 1980-03-28 1982-12-21 Pitney Bowes Inc. Serial communications bus for remote terminals
US4371754A (en) * 1980-11-19 1983-02-01 Rockwell International Corporation Automatic fault recovery system for a multiple processor telecommunications switching control
US4418343A (en) * 1981-02-19 1983-11-29 Honeywell Information Systems Inc. CRT Refresh memory system
US4424565A (en) * 1981-06-22 1984-01-03 Bell Telephone Laboratories, Incorporated Channel interface circuit with high speed data message header field translation and direct memory access
US4398270A (en) * 1981-09-09 1983-08-09 Mostek Corporation Self-loading bootstrap circuit
US4597084A (en) * 1981-10-01 1986-06-24 Stratus Computer, Inc. Computer memory apparatus
US4453215A (en) * 1981-10-01 1984-06-05 Stratus Computer, Inc. Central processing apparatus for fault-tolerant computing
JPS5892025A (en) * 1981-11-26 1983-06-01 Hitachi Ltd Data processing system
IT1151351B (en) * 1982-01-19 1986-12-17 Italtel Spa CIRCUIT PROVISION SUITABLE TO CARRY OUT THE EXCHANGE OF DATA BETWEEN A COUPLE OF OPERATING PROCESSORS ACCORDING TO THE MASTER-SLAVE PRINCIPLE
US4541094A (en) * 1983-03-21 1985-09-10 Sequoia Systems, Inc. Self-checking computer circuitry
US4602327A (en) * 1983-07-28 1986-07-22 Motorola, Inc. Bus master capable of relinquishing bus on request and retrying bus cycle
DE3328405A1 (en) * 1983-08-05 1985-02-21 Siemens AG, 1000 Berlin und 8000 München Control elements of a fault-tolerant multicomputer system
US4590557A (en) * 1983-09-12 1986-05-20 Pitney Bowes Inc. Method and apparatus for controlling software configurations in data processing systems
US4610013A (en) * 1983-11-08 1986-09-02 Avco Corporation Remote multiplexer terminal with redundant central processor units
US4569017A (en) * 1983-12-22 1986-02-04 Gte Automatic Electric Incorporated Duplex central processing unit synchronization circuit
EP0148297B1 (en) * 1984-01-09 1993-12-15 Hitachi, Ltd. Synchronous decentralized processing system
US4589066A (en) * 1984-05-31 1986-05-13 General Electric Company Fault tolerant, frame synchronization for multiple processor systems
US4823256A (en) * 1984-06-22 1989-04-18 American Telephone And Telegraph Company, At&T Bell Laboratories Reconfigurable dual processor system
US4672613A (en) * 1985-11-01 1987-06-09 Cipher Data Products, Inc. System for transferring digital data between a host device and a recording medium
US4751702A (en) * 1986-02-10 1988-06-14 International Business Machines Corporation Improving availability of a restartable staged storage data base system that uses logging facilities
JP2605271B2 (en) * 1987-02-10 1997-04-30 ソニー株式会社 Error correction and checking device
JPH0690682B2 (en) * 1987-02-28 1994-11-14 日本電気株式会社 Fault processing method of multiprocessor system
EP0306211A3 (en) * 1987-09-04 1990-09-26 Digital Equipment Corporation Synchronized twin computer system
US4916704A (en) * 1987-09-04 1990-04-10 Digital Equipment Corporation Interface of non-fault tolerant components to fault tolerant system
CA1320276C (en) * 1987-09-04 1993-07-13 William F. Bruckert Dual rail processors with error checking on i/o reads
US4907228A (en) * 1987-09-04 1990-03-06 Digital Equipment Corporation Dual-rail processor with error checking at single rail interfaces
EP0306244B1 (en) * 1987-09-04 1995-06-21 Digital Equipment Corporation Fault tolerant computer system with fault isolation

Also Published As

Publication number Publication date
EP0415548A3 (en) 1992-03-18
US5068780A (en) 1991-11-26
EP0415548A2 (en) 1991-03-06
JPH03182938A (en) 1991-08-08
CA2022259C (en) 1994-03-22

Similar Documents

Publication Publication Date Title
CA2022259A1 (en) Method and apparatus for controlling initiation of bootstrap loading
IE851575L (en) Data processor having dynamic bus sizing
WO1985002039A2 (en) Microcomputer
EP0213843A3 (en) Digital processor control
ES8303743A1 (en) Data processing system for parallel processing.
EP0326671A3 (en) A computer system and a method of monitoring transient data structures of a computer system
JPS6436336A (en) Calculator system
CA2009555A1 (en) Virtual computer system having improved input/output interrupt control
EP0377994A3 (en) Apparatus for performing floating point arithmetic operations
JPS54127653A (en) Data processor
WO1997036227A3 (en) Method and computer system for processing a set of data elements on a sequential processor
EP0378415A3 (en) Multiple instruction dispatch mechanism
EP0628907A3 (en) Method of running on a computer system an application not designed to run on the computer system.
EP0130381A3 (en) Mechanism for implementing one machine cycle executable branch-on-any-bit-in-any-register instructions in a primitive instruction set computing system
CA2007004A1 (en) Multiprocessor controller having shared control store
DE3277424D1 (en) Coupler for processors
JPS57164343A (en) Check point save system
JPS57113144A (en) Stored program computer
JPS5489455A (en) Control system
CA2025657A1 (en) Method and apparatus for preventing bus contention problems between two processors
JPS649561A (en) Computer
EP0313817A3 (en) Method and apparatus for explicitly evaluating conditions in a data processor
EP0138045A3 (en) Apparatus and method for synchronization of peripheral devices via bus cycle alteration in a microprocessor implemented data processing system
EP0282969A3 (en) Computer system having byte sequence conversion mechanism
JPS51131235A (en) Electronic register

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed