DE69030573D1 - Ablaufsteuerung zur decodierung von befehlen variabler länge für ein mikroprozessor - Google Patents

Ablaufsteuerung zur decodierung von befehlen variabler länge für ein mikroprozessor

Info

Publication number
DE69030573D1
DE69030573D1 DE69030573T DE69030573T DE69030573D1 DE 69030573 D1 DE69030573 D1 DE 69030573D1 DE 69030573 T DE69030573 T DE 69030573T DE 69030573 T DE69030573 T DE 69030573T DE 69030573 D1 DE69030573 D1 DE 69030573D1
Authority
DE
Germany
Prior art keywords
microprocessor
process control
variable length
decoding commands
decoding
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 - Lifetime
Application number
DE69030573T
Other languages
English (en)
Inventor
Akihiro Yoshitake
Toshiharu Ohshima
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
Application granted granted Critical
Publication of DE69030573D1 publication Critical patent/DE69030573D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
    • G06F9/30149—Instruction analysis, e.g. decoding, instruction word fields of variable length instructions
    • G06F9/30152—Determining start or end of instruction; determining instruction length

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Executing Machine-Instructions (AREA)
DE69030573T 1989-01-17 1990-01-12 Ablaufsteuerung zur decodierung von befehlen variabler länge für ein mikroprozessor Expired - Lifetime DE69030573D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP812489 1989-01-17
PCT/JP1990/000034 WO1990008355A1 (en) 1989-01-17 1990-01-12 Microprocessor

Publications (1)

Publication Number Publication Date
DE69030573D1 true DE69030573D1 (de) 1997-05-28

Family

ID=11684545

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69030573T Expired - Lifetime DE69030573D1 (de) 1989-01-17 1990-01-12 Ablaufsteuerung zur decodierung von befehlen variabler länge für ein mikroprozessor

Country Status (5)

Country Link
US (1) US5249273A (de)
EP (1) EP0461257B1 (de)
KR (1) KR930005768B1 (de)
DE (1) DE69030573D1 (de)
WO (1) WO1990008355A1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04156613A (ja) * 1990-10-20 1992-05-29 Fujitsu Ltd 命令バッファ装置
JP2646855B2 (ja) * 1991-01-21 1997-08-27 三菱電機株式会社 データ処理装置
EP0498654B1 (de) * 1991-02-08 2000-05-10 Fujitsu Limited Cachespeicher zur Verarbeitung von Befehlsdaten und Datenprozessor mit demselben
US5438668A (en) * 1992-03-31 1995-08-01 Seiko Epson Corporation System and method for extraction, alignment and decoding of CISC instructions into a nano-instruction bucket for execution by a RISC computer
US6735685B1 (en) 1992-09-29 2004-05-11 Seiko Epson Corporation System and method for handling load and/or store operations in a superscalar microprocessor
EP0663083B1 (de) 1992-09-29 2000-12-20 Seiko Epson Corporation System und verfahren zur handhabung von laden und/oder speichern in einem superskalar mikroprozessor
US5848289A (en) * 1992-11-27 1998-12-08 Motorola, Inc. Extensible central processing unit
US5590368A (en) * 1993-03-31 1996-12-31 Intel Corporation Method and apparatus for dynamically expanding the pipeline of a microprocessor
GB9412434D0 (en) 1994-06-21 1994-08-10 Inmos Ltd Computer instruction compression
US5625784A (en) * 1994-07-27 1997-04-29 Chromatic Research, Inc. Variable length instructions packed in a fixed length double instruction
US5590358A (en) * 1994-09-16 1996-12-31 Philips Electronics North America Corporation Processor with word-aligned branch target in a byte-oriented instruction set
US5758116A (en) * 1994-09-30 1998-05-26 Intel Corporation Instruction length decoder for generating output length indicia to identity boundaries between variable length instructions
US5999742A (en) * 1995-01-26 1999-12-07 Zilog, Inc. Dual latch data transfer pacing logic using a timer to maintain a data transfer interval
US5966514A (en) 1995-05-31 1999-10-12 Matsushita Electric Industrial Co., Ltd. Microprocessor for supporting reduction of program codes in size
US5896519A (en) * 1996-06-10 1999-04-20 Lsi Logic Corporation Apparatus for detecting instructions from a variable-length compressed instruction set having extended and non-extended instructions
US6085313A (en) * 1998-04-30 2000-07-04 International Business Machines Corporation Computer processor system for executing RXE format floating point instructions
US6237101B1 (en) 1998-08-03 2001-05-22 International Business Machines Corporation Microprocessor including controller for reduced power consumption and method therefor
KR100322277B1 (ko) * 1998-11-20 2002-03-08 권 기 홍 확장 명령어를 가진 중앙처리장치
KR100308211B1 (ko) 1999-03-27 2001-10-29 윤종용 압축 명령을 갖는 마이크로 컴퓨터 시스템
CA2380464C (en) 2000-06-01 2006-05-09 Everbrite, Inc. Gas-discharge lamp including a fault protection circuit
US6633969B1 (en) 2000-08-11 2003-10-14 Lsi Logic Corporation Instruction translation system and method achieving single-cycle translation of variable-length MIPS16 instructions
US9013498B1 (en) * 2008-12-19 2015-04-21 Nvidia Corporation Determining a working set of texture maps

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL149925C (de) * 1968-10-25 1976-06-15
JPS5931734B2 (ja) * 1977-10-25 1984-08-03 デイジタル イクイプメント コ−ポレ−シヨン 特別のオペランド指定子を持つた命令を実行する中央処理装置
US4188669A (en) * 1978-01-13 1980-02-12 Ncr Corporation Decoder for variable-length codes
US4293907A (en) * 1978-12-29 1981-10-06 Bell Telephone Laboratories, Incorporated Data processing apparatus having op-code extension register
US4240142A (en) * 1978-12-29 1980-12-16 Bell Telephone Laboratories, Incorporated Data processing apparatus providing autoincrementing of memory pointer registers
US4258419A (en) * 1978-12-29 1981-03-24 Bell Telephone Laboratories, Incorporated Data processing apparatus providing variable operand width operation
CA1174370A (en) * 1980-05-19 1984-09-11 Hidekazu Matsumoto Data processing unit with pipelined operands
JPS57161943A (en) * 1981-03-31 1982-10-05 Hitachi Ltd Data processing device
US4530050A (en) * 1981-08-26 1985-07-16 Hitachi, Ltd. Central processing unit for executing instructions of variable length having end information for operand specifiers
US4704678A (en) * 1982-11-26 1987-11-03 Inmos Limited Function set for a microcomputer
EP0186668A1 (de) * 1984-06-27 1986-07-09 Motorola, Inc. Fliessbandausführung von dreiwortbefehlen
US4785393A (en) * 1984-07-09 1988-11-15 Advanced Micro Devices, Inc. 32-Bit extended function arithmetic-logic unit on a single chip
JP2554050B2 (ja) * 1986-02-26 1996-11-13 株式会社日立製作所 デ−タ処理方法
JPS6391739A (ja) * 1986-10-06 1988-04-22 Matsushita Electric Ind Co Ltd 可変長命令解読装置
JPH0766324B2 (ja) * 1988-03-18 1995-07-19 三菱電機株式会社 データ処理装置
JPH10237837A (ja) * 1997-02-28 1998-09-08 Sky Alum Co Ltd プラットホームの融雪床

Also Published As

Publication number Publication date
US5249273A (en) 1993-09-28
WO1990008355A1 (en) 1990-07-26
KR910700497A (ko) 1991-03-15
EP0461257B1 (de) 1997-04-23
EP0461257A4 (de) 1991-05-15
KR930005768B1 (ko) 1993-06-24
EP0461257A1 (de) 1991-12-18

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Legal Events

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