DE69518474T2 - Frühzeitige Arbitrierung - Google Patents

Frühzeitige Arbitrierung

Info

Publication number
DE69518474T2
DE69518474T2 DE69518474T DE69518474T DE69518474T2 DE 69518474 T2 DE69518474 T2 DE 69518474T2 DE 69518474 T DE69518474 T DE 69518474T DE 69518474 T DE69518474 T DE 69518474T DE 69518474 T2 DE69518474 T2 DE 69518474T2
Authority
DE
Germany
Prior art keywords
arbitration
early
early arbitration
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
DE69518474T
Other languages
English (en)
Other versions
DE69518474D1 (de
Inventor
David M Fenwick
Doren Stephen R Van
Denis Foley
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.)
Compaq Computer Corp
Original Assignee
Compaq Computer 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 Compaq Computer Corp filed Critical Compaq Computer Corp
Publication of DE69518474D1 publication Critical patent/DE69518474D1/de
Application granted granted Critical
Publication of DE69518474T2 publication Critical patent/DE69518474T2/de
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
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0877—Cache access modes
    • G06F12/0884—Parallel mode, e.g. in parallel with main memory or CPU
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
    • G06F13/368—Handling requests for interconnection or transfer for access to common bus or bus system with decentralised access control

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Bus Control (AREA)
DE69518474T 1994-06-30 1995-06-29 Frühzeitige Arbitrierung Expired - Fee Related DE69518474T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/269,251 US6256694B1 (en) 1994-06-30 1994-06-30 Distributed early arbitration

Publications (2)

Publication Number Publication Date
DE69518474D1 DE69518474D1 (de) 2000-09-28
DE69518474T2 true DE69518474T2 (de) 2001-01-04

Family

ID=23026462

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69518474T Expired - Fee Related DE69518474T2 (de) 1994-06-30 1995-06-29 Frühzeitige Arbitrierung

Country Status (3)

Country Link
US (1) US6256694B1 (de)
EP (1) EP0690387B1 (de)
DE (1) DE69518474T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0772829A1 (de) * 1995-05-26 1997-05-14 National Semiconductor Corporation Pipelinemikroprozessor, der speicheranforderungen während desselben taktzykluses zu einem chachespeicher und zu einem steuerungsgerät eines externen speichers stellt
US7174401B2 (en) * 2002-02-28 2007-02-06 Lsi Logic Corporation Look ahead split release for a data bus

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896419A (en) * 1974-01-17 1975-07-22 Honeywell Inf Systems Cache memory store in a processor of a data processing system
US3979726A (en) * 1974-04-10 1976-09-07 Honeywell Information Systems, Inc. Apparatus for selectively clearing a cache store in a processor having segmentation and paging
US4181938A (en) * 1975-10-15 1980-01-01 Tokyo Shibaura Electric Co., Ltd. Processor device
US4257095A (en) * 1978-06-30 1981-03-17 Intel Corporation System bus arbitration, circuitry and methodology
US4620278A (en) * 1983-08-29 1986-10-28 Sperry Corporation Distributed bus arbitration according each bus user the ability to inhibit all new requests to arbitrate the bus, or to cancel its own pending request, and according the highest priority user the ability to stop the bus
US5067071A (en) * 1985-02-27 1991-11-19 Encore Computer Corporation Multiprocessor computer system employing a plurality of tightly coupled processors with interrupt vector bus
US4703420A (en) * 1985-02-28 1987-10-27 International Business Machines Corporation System for arbitrating use of I/O bus by co-processor and higher priority I/O units in which co-processor automatically request bus access in anticipation of need
US4908749A (en) * 1985-11-15 1990-03-13 Data General Corporation System for controlling access to computer bus having address phase and data phase by prolonging the generation of request signal
US4980854A (en) * 1987-05-01 1990-12-25 Digital Equipment Corporation Lookahead bus arbitration system with override of conditional access grants by bus cycle extensions for multicycle data transfers
US4953078A (en) * 1987-10-28 1990-08-28 Digital Equipment Corporation Apparatus and method for multi-threaded program execution in a microcoded data processing system
US5168568A (en) * 1989-02-06 1992-12-01 Compaq Computer Corporation Delaying arbitration of bus access in digital computers
US5113522A (en) * 1989-05-17 1992-05-12 International Business Machines Corporation Data processing system with system resource management for itself and for an associated alien processor
JP2986176B2 (ja) * 1990-05-11 1999-12-06 株式会社日立製作所 バス権制御方式およびバスシステム
JPH04233642A (ja) * 1990-07-27 1992-08-21 Dell Usa Corp キャッシュアクセスと並列的にメモリアクセスを行なうプロセッサ及びそれに用いられる方法
JPH0810445B2 (ja) * 1990-09-21 1996-01-31 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 動的バス調停方法及び装置
US5404137A (en) 1991-05-09 1995-04-04 Levien; Raphael L. High speed transition signalling communication system
US5345576A (en) * 1991-12-31 1994-09-06 Intel Corporation Microprocessor simultaneously issues an access to an external cache over an external cache bus and to an internal cache, cancels the external cache access on an internal cache hit, and reissues the access over a main memory bus on an external cache miss
DE69320508T2 (de) * 1992-03-04 1999-03-04 Motorola Inc Verfahren und Gerät zur Busarbitrierungsdurchführung mit einem Arbiter in einem Datenverarbeitungssystem
US5301283A (en) * 1992-04-16 1994-04-05 Digital Equipment Corporation Dynamic arbitration for system bus control in multiprocessor data processing system
US5412788A (en) * 1992-04-16 1995-05-02 Digital Equipment Corporation Memory bank management and arbitration in multiprocessor computer system
US5299196A (en) 1992-11-12 1994-03-29 International Business Machines Corporation Distributed address decoding for bus structures
US5459840A (en) * 1993-02-26 1995-10-17 3Com Corporation Input/output bus architecture with parallel arbitration
US5455912A (en) * 1993-06-18 1995-10-03 Vtech Industries, Inc. High speed/low overhead bus arbitration apparatus and method for arbitrating a system bus
US5758106A (en) * 1994-06-30 1998-05-26 Digital Equipment Corporation Arbitration unit which requests control of the system bus prior to determining whether such control is required

Also Published As

Publication number Publication date
US6256694B1 (en) 2001-07-03
DE69518474D1 (de) 2000-09-28
EP0690387A1 (de) 1996-01-03
EP0690387B1 (de) 2000-08-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee