FR2670601B1 - Dispositif de memoire morte. - Google Patents

Dispositif de memoire morte.

Info

Publication number
FR2670601B1
FR2670601B1 FR9015855A FR9015855A FR2670601B1 FR 2670601 B1 FR2670601 B1 FR 2670601B1 FR 9015855 A FR9015855 A FR 9015855A FR 9015855 A FR9015855 A FR 9015855A FR 2670601 B1 FR2670601 B1 FR 2670601B1
Authority
FR
France
Prior art keywords
memory device
dead memory
dead
memory
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 - Fee Related
Application number
FR9015855A
Other languages
English (en)
Other versions
FR2670601A1 (fr
Inventor
Tsuneo Ohno
Yoshio Suzuki
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of FR2670601A1 publication Critical patent/FR2670601A1/fr
Application granted granted Critical
Publication of FR2670601B1 publication Critical patent/FR2670601B1/fr
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
    • 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
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/32—Address formation of the next instruction, e.g. by incrementing the instruction counter
    • G06F9/322—Address formation of the next instruction, e.g. by incrementing the instruction counter for non-sequential address
    • G06F9/328—Address formation of the next instruction, e.g. by incrementing the instruction counter for non-sequential address for runtime instruction patching
    • 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
    • G06F9/26—Address formation of the next micro-instruction ; Microprogram storage or retrieval arrangements
    • G06F9/262—Arrangements for next microinstruction selection
    • G06F9/268—Microinstruction selection not based on processing results, e.g. interrupt, patch, first cycle store, diagnostic programs

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Stored Programmes (AREA)
  • Read Only Memory (AREA)
  • Debugging And Monitoring (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)
FR9015855A 1990-12-11 1990-12-18 Dispositif de memoire morte. Expired - Fee Related FR2670601B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9026877A GB2250838A (en) 1990-12-11 1990-12-11 Patching a program stored in ROM

Publications (2)

Publication Number Publication Date
FR2670601A1 FR2670601A1 (fr) 1992-06-19
FR2670601B1 true FR2670601B1 (fr) 1995-01-20

Family

ID=10686819

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9015855A Expired - Fee Related FR2670601B1 (fr) 1990-12-11 1990-12-18 Dispositif de memoire morte.

Country Status (3)

Country Link
DE (1) DE4040503A1 (fr)
FR (1) FR2670601B1 (fr)
GB (1) GB2250838A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292470A (en) * 1994-08-19 1996-02-21 Advanced Risc Mach Ltd Rom patching
JPH0876990A (ja) * 1994-09-07 1996-03-22 Seikosha Co Ltd カメラ用制御回路
DE19540915A1 (de) * 1994-11-10 1996-05-15 Raymond Engineering Redundante Anordnung von Festkörper-Speicherbausteinen
US5581776A (en) * 1995-02-03 1996-12-03 Nokia Mobile Phones Limited Branch control system for rom-programmed processor
US6135651A (en) * 1997-05-29 2000-10-24 Cirrus Logic, Inc. Patching apparatus and method for upgrading modem software code

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1089225B (it) * 1977-12-23 1985-06-18 Honeywell Inf Systems Memoria con dispositivo rivelatore e correttore a intervento selettivo
JPS57155642A (en) * 1981-03-23 1982-09-25 Nissan Motor Co Ltd Computer capable of using correcting memory
DE3137152A1 (de) * 1981-09-18 1983-04-14 Robert Bosch Gmbh, 7000 Stuttgart Speicher-korrektureinheit
US4542453A (en) * 1982-02-19 1985-09-17 Texas Instruments Incorporated Program patching in microcomputer
EP0118583A1 (fr) * 1983-03-17 1984-09-19 Georg V. Coza Unité de correction de mémoire
JPS60243795A (ja) * 1984-05-17 1985-12-03 シャープ株式会社 電子レジスタの変更プログラム設定装置
US4897813A (en) * 1988-02-19 1990-01-30 Unisys Corporation Partially programmable read-only memory system
JPH01232447A (ja) * 1988-03-11 1989-09-18 Mitsubishi Electric Corp シングル・チップ・マイクロコンピュータ
JPH02177095A (ja) * 1988-12-27 1990-07-10 Nec Corp 半導体不揮発性メモリ
EP0686980B1 (fr) * 1989-01-31 1998-12-16 Fujitsu Limited Mémoire à semi-conducteur avec dispositif pour substituer les éléments défectueux
GB2231419B (en) * 1989-05-05 1993-09-22 Technophone Ltd Updating prom information.

Also Published As

Publication number Publication date
DE4040503A1 (de) 1992-06-25
GB9026877D0 (en) 1991-01-30
FR2670601A1 (fr) 1992-06-19
GB2250838A (en) 1992-06-17

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Legal Events

Date Code Title Description
ST Notification of lapse