JPS57164343A - Check point save system - Google Patents

Check point save system

Info

Publication number
JPS57164343A
JPS57164343A JP56048618A JP4861881A JPS57164343A JP S57164343 A JPS57164343 A JP S57164343A JP 56048618 A JP56048618 A JP 56048618A JP 4861881 A JP4861881 A JP 4861881A JP S57164343 A JPS57164343 A JP S57164343A
Authority
JP
Japan
Prior art keywords
address
control
register
check point
saved
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
JP56048618A
Other languages
Japanese (ja)
Inventor
Kenji Sakai
Takashi Aoki
Hiroshi Takada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56048618A priority Critical patent/JPS57164343A/en
Publication of JPS57164343A publication Critical patent/JPS57164343A/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
    • G06F11/14—Error detection or correction of the data by redundancy in operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Retry When Errors Occur (AREA)

Abstract

PURPOSE:To designate a point possible for retrial, when an error takes place during the execution of a system control in a microprogram control computer, by saving an address of a control storage storing a microinstruction. CONSTITUTION:When a control storage (CS)1 is accessed with an address designation by an address register 2, a corresponding microinstruction is sequentially executed, a microprogram enters a system control routine, and if a check point is set on the way, the corresponding CS address is saved and a control gate 4 is operated with a set check point order SCKPT transmitted from the CS1 at that time. The saved CS address is transferred from the register 2 to a save register 3 to set the check point and a register 8 is set with a set retriable order SRET at the same time. If an error takes place during the execution of an instruction, the step enters an error processing routine under the control of a CS address control circuit 7 with a detection circuit 6.
JP56048618A 1981-03-31 1981-03-31 Check point save system Pending JPS57164343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56048618A JPS57164343A (en) 1981-03-31 1981-03-31 Check point save system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56048618A JPS57164343A (en) 1981-03-31 1981-03-31 Check point save system

Publications (1)

Publication Number Publication Date
JPS57164343A true JPS57164343A (en) 1982-10-08

Family

ID=12808392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56048618A Pending JPS57164343A (en) 1981-03-31 1981-03-31 Check point save system

Country Status (1)

Country Link
JP (1) JPS57164343A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048546A (en) * 1983-08-25 1985-03-16 Fujitsu Ltd Resetting system
JPS62247426A (en) * 1986-03-20 1987-10-28 Fujitsu Ltd Processing system for processing instruction of large quantity of data
JPS63191239A (en) * 1987-02-04 1988-08-08 Hitachi Ltd Method and device for instruction restart processing
US5146569A (en) * 1986-10-24 1992-09-08 Hitachi, Ltd. System for storing restart address of microprogram, determining the validity, and using valid restart address to resume execution upon removal of suspension
JPH05210527A (en) * 1991-08-29 1993-08-20 Internatl Business Mach Corp <Ibm> Device and method of recovering error by retry and check-point setting

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332646A (en) * 1976-09-08 1978-03-28 Hitachi Ltd Reexecutionable electronic computer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332646A (en) * 1976-09-08 1978-03-28 Hitachi Ltd Reexecutionable electronic computer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048546A (en) * 1983-08-25 1985-03-16 Fujitsu Ltd Resetting system
JPS6355089B2 (en) * 1983-08-25 1988-11-01 Fujitsu Ltd
JPS62247426A (en) * 1986-03-20 1987-10-28 Fujitsu Ltd Processing system for processing instruction of large quantity of data
US5146569A (en) * 1986-10-24 1992-09-08 Hitachi, Ltd. System for storing restart address of microprogram, determining the validity, and using valid restart address to resume execution upon removal of suspension
JPS63191239A (en) * 1987-02-04 1988-08-08 Hitachi Ltd Method and device for instruction restart processing
JPH05210527A (en) * 1991-08-29 1993-08-20 Internatl Business Mach Corp <Ibm> Device and method of recovering error by retry and check-point setting

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