GB1202489A - Microprogrammed data processing system - Google Patents

Microprogrammed data processing system

Info

Publication number
GB1202489A
GB1202489A GB6055668A GB6055668A GB1202489A GB 1202489 A GB1202489 A GB 1202489A GB 6055668 A GB6055668 A GB 6055668A GB 6055668 A GB6055668 A GB 6055668A GB 1202489 A GB1202489 A GB 1202489A
Authority
GB
United Kingdom
Prior art keywords
microprogramme
injection
data processing
register
reaches
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
GB6055668A
Inventor
Dennis Paton Attwood
David Mcculloch Syme
Harold William Tuffill
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Priority to GB6055668A priority Critical patent/GB1202489A/en
Priority to FR6938590A priority patent/FR2026618B1/fr
Priority to DE19691958747 priority patent/DE1958747C3/en
Priority to JP44096883A priority patent/JPS5029775B1/ja
Priority to CH1889669A priority patent/CH502646A/en
Publication of GB1202489A publication Critical patent/GB1202489A/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
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
    • G06F11/2215—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test error correction or detection circuits
    • 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
    • G06F9/22—Microcontrol or microprogram arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Retry When Errors Occur (AREA)
  • Executing Machine-Instructions (AREA)

Abstract

1,202,489. Data processing. INTERNATIONAL BUSINESS MACHINES CORP. 20 Dec., 1968, No. 60556/68. Heading G4A. In a microprogrammed data processing system, simulated monitoring or control data is forced from an injection register into bit storage positions of data processing circuitry on identification of a predetermined stage in the execution of a microprogramme, thereby to initiate a system test or response other than by means of the microprogramme. Injection may occur when a preset counter, counted down as the microprogramme proceeds, reaches zero, or when a counter incremented from zero reaches a prespecified value, or when the current address supplied to a microprogramme read-only store reaches a prespecified value. A presettable mask may be used to prevent some portions of the injection register being used. A plurality of injection registers may be used at different points in the microprogramme. Retry means, normally used for retrying a macroinstruction during which an error occurred, using saved system states, may be tested by the above means by forcing simulated error indicating information in the above way. A "diagnose" macroinstruction is used to load the injection register and the means specifying the desired stage in the microprogramme from main memory, or the injection register may be loaded from a keyboard. The microprogrammes could be stored in the main memory. The bit storage positions which are forced may relate to occurrence of a parity error or availability of a peripheral unit or microprogrammo branch.
GB6055668A 1968-12-20 1968-12-20 Microprogrammed data processing system Expired GB1202489A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB6055668A GB1202489A (en) 1968-12-20 1968-12-20 Microprogrammed data processing system
FR6938590A FR2026618B1 (en) 1968-12-20 1969-11-03
DE19691958747 DE1958747C3 (en) 1968-12-20 1969-11-22 Device for microprogram-controlled error checking
JP44096883A JPS5029775B1 (en) 1968-12-20 1969-12-04
CH1889669A CH502646A (en) 1968-12-20 1969-12-19 Microprogram-controlled data processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6055668A GB1202489A (en) 1968-12-20 1968-12-20 Microprogrammed data processing system

Publications (1)

Publication Number Publication Date
GB1202489A true GB1202489A (en) 1970-08-19

Family

ID=10485740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6055668A Expired GB1202489A (en) 1968-12-20 1968-12-20 Microprogrammed data processing system

Country Status (5)

Country Link
JP (1) JPS5029775B1 (en)
CH (1) CH502646A (en)
DE (1) DE1958747C3 (en)
FR (1) FR2026618B1 (en)
GB (1) GB1202489A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252340A2 (en) * 1986-07-10 1988-01-13 International Business Machines Corporation Programmable fault injection tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104370A (en) * 1976-02-27 1977-09-01 Sharp Corp Programmed dehydrating and washing machie
JPS52105669A (en) * 1976-03-01 1977-09-05 Hitachi Ltd Program cycle of one tank type dewatering washer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252340A2 (en) * 1986-07-10 1988-01-13 International Business Machines Corporation Programmable fault injection tool
EP0252340A3 (en) * 1986-07-10 1990-01-31 International Business Machines Corporation Programmable fault injection tool

Also Published As

Publication number Publication date
DE1958747C3 (en) 1980-11-27
CH502646A (en) 1971-01-31
FR2026618B1 (en) 1973-03-16
JPS5029775B1 (en) 1975-09-26
FR2026618A1 (en) 1970-09-18
DE1958747A1 (en) 1970-07-09
DE1958747B2 (en) 1980-03-27

Similar Documents

Publication Publication Date Title
US3197740A (en) Data storage and processing machine
US3427443A (en) Instruction execution marker for testing computer programs
US3688274A (en) Command retry control by peripheral devices
US3803559A (en) Memory protection system
GB1344474A (en) Fault detection and handling arrangements for use in data proces sing systems
GB1410631A (en) Data processing system interrupt arrangements
NL159209B (en) CONTROL CIRCUIT FOR AN ELECTRONIC DIGITAL CALCULATOR.
GB1459851A (en) Microprogrammable control memory diagnostic system
GB1378224A (en) Data processing apparatus
US4127768A (en) Data processing system self-test enabling technique
GB992516A (en) Data memory system
GB1108801A (en) Improvements in or relating to electronic data processing systems
US3673573A (en) Computer with program tracing facility
GB1184160A (en) Data Processing Systems
GB1397591A (en) Data processing systems
US4074229A (en) Method for monitoring the sequential order of successive code signal groups
GB1536043A (en) Computer with set relationship tests
GB1169160A (en) Data Processor
US4039813A (en) Apparatus and method for diagnosing digital data devices
US3603936A (en) Microprogrammed data processing system
US3745316A (en) Computer checking system
US3794818A (en) Automatic memory test and correction system
US3566093A (en) Diagnostic method and implementation for data processors
US3221307A (en) Automatic tape unit selector
US3248702A (en) Electronic digital computing machines

Legal Events

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