DE3176788D1 - High speed digital processor - Google Patents

High speed digital processor

Info

Publication number
DE3176788D1
DE3176788D1 DE8181305062T DE3176788T DE3176788D1 DE 3176788 D1 DE3176788 D1 DE 3176788D1 DE 8181305062 T DE8181305062 T DE 8181305062T DE 3176788 T DE3176788 T DE 3176788T DE 3176788 D1 DE3176788 D1 DE 3176788D1
Authority
DE
Germany
Prior art keywords
high speed
digital processor
speed digital
processor
speed
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
DE8181305062T
Other languages
English (en)
Inventor
Yoshimune Hagiwara
Shizuo Sugiyama
Narimichi Maeda
Osamu Yumoto
Takashi Akazawa
Masahito Kobayashi
Yasuhiro Kita
Yuzo Kita
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.)
Hitachi Denshi KK
Hitachi Ltd
Original Assignee
Hitachi Denshi KK
Hitachi 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 Hitachi Denshi KK, Hitachi Ltd filed Critical Hitachi Denshi KK
Application granted granted Critical
Publication of DE3176788D1 publication Critical patent/DE3176788D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/483—Computations with numbers represented by a non-linear combination of denominational numbers, e.g. rational numbers, logarithmic number system or floating-point numbers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/01—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising
    • G06F5/012—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising in floating-point computations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/483—Computations with numbers represented by a non-linear combination of denominational numbers, e.g. rational numbers, logarithmic number system or floating-point numbers
    • G06F7/485—Adding; Subtracting
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/38—Indexing scheme relating to groups G06F7/38 - G06F7/575
    • G06F2207/3804—Details
    • G06F2207/3808—Details concerning the type of numbers or the way they are handled
    • G06F2207/3856—Operand swapping
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/499—Denomination or exception handling, e.g. rounding or overflow
    • G06F7/49905—Exception handling
    • G06F7/4991—Overflow or underflow
    • G06F7/49921—Saturation, i.e. clipping the result to a minimum or maximum value

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Complex Calculations (AREA)
DE8181305062T 1980-10-31 1981-10-27 High speed digital processor Expired DE3176788D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55152051A JPS5776634A (en) 1980-10-31 1980-10-31 Digital signal processor

Publications (1)

Publication Number Publication Date
DE3176788D1 true DE3176788D1 (en) 1988-07-21

Family

ID=15531968

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8585107059T Expired - Lifetime DE3177238D1 (de) 1980-10-31 1981-10-27 Addierer fuer gleitkommadaten.
DE8181305062T Expired DE3176788D1 (en) 1980-10-31 1981-10-27 High speed digital processor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE8585107059T Expired - Lifetime DE3177238D1 (de) 1980-10-31 1981-10-27 Addierer fuer gleitkommadaten.

Country Status (4)

Country Link
US (3) US4511990A (de)
EP (2) EP0182963B1 (de)
JP (1) JPS5776634A (de)
DE (2) DE3177238D1 (de)

Families Citing this family (125)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577282A (en) * 1982-02-22 1986-03-18 Texas Instruments Incorporated Microcomputer system for digital signal processing
US5854907A (en) * 1982-02-22 1998-12-29 Texas Instruments Incorporated Microcomputer for digital signal processing having on-chip memory and external memory access
JPS59117637A (ja) * 1982-12-24 1984-07-07 Toshiba Corp 浮動小数点乗算装置
JPS59149539A (ja) * 1983-01-28 1984-08-27 Toshiba Corp 固定小数点−浮動小数点変換装置
JPS6077238A (ja) * 1983-10-03 1985-05-01 Nec Corp 浮動小数点演算回路
JPS6097435A (ja) * 1983-11-02 1985-05-31 Hitachi Ltd 演算処理装置
NL8304186A (nl) * 1983-12-06 1985-07-01 Philips Nv Geintegreerde processor voor het verwerken van woordsgewijze ontvangbare informatie.
JPS60140422A (ja) * 1983-12-28 1985-07-25 Nec Corp 演算処理装置
EP0173383B1 (de) * 1984-08-14 1990-04-18 Telecommunications Radioelectriques Et Telephoniques T.R.T. Prozessor zur Verarbeitung von Daten verschiedener Darstellungsarten und geeignetes Multipliziergerät für einen solchen Prozessor
US4943940A (en) * 1984-09-27 1990-07-24 Advanced Micro Devices, Inc. Floating point add/subtract and multiplying assemblies sharing common normalization, rounding and exponential apparatus
US4773035A (en) * 1984-10-19 1988-09-20 Amdahl Corporation Pipelined data processing system utilizing ideal floating point execution condition detection
US4736335A (en) * 1984-11-13 1988-04-05 Zoran Corporation Multiplier-accumulator circuit using latched sums and carries
US4698771A (en) * 1984-12-31 1987-10-06 Gte Communication Systems Corporation Adder circuit for encoded PCM samples
US4758974A (en) * 1985-01-29 1988-07-19 American Telephone And Telegraph Company, At&T Bell Laboratories Most significant digit location
JPS61235983A (ja) * 1985-04-11 1986-10-21 Pioneer Electronic Corp デイジタル信号処理回路
JPH07104771B2 (ja) * 1985-05-10 1995-11-13 株式会社日立製作所 計算機
US4700319A (en) * 1985-06-06 1987-10-13 The United States Of America As Represented By The Secretary Of The Air Force Arithmetic pipeline for image processing
US5109524A (en) * 1985-07-02 1992-04-28 Vlsi Technology, Inc. Digital processor with a four part data register for storing data before and after data conversion and data calculations
JPS6211933A (ja) * 1985-07-09 1987-01-20 Nec Corp 演算回路
JPS6297031A (ja) * 1985-10-23 1987-05-06 Nec Corp 仮数部のビツト数整合方式
US4805128A (en) * 1985-11-22 1989-02-14 Geophysical Service Inc. Format conversion system
US4825400A (en) * 1986-01-13 1989-04-25 General Electric Company Floating point accumulator circuit
JPS62168228A (ja) * 1986-01-21 1987-07-24 Nec Corp 浮動小数点積和演算器
US4815021A (en) * 1986-01-30 1989-03-21 Star Technologies, Inc. Multifunction arithmetic logic unit circuit
JPH069028B2 (ja) * 1986-02-18 1994-02-02 日本電気株式会社 演算装置
JPS62190528A (ja) * 1986-02-18 1987-08-20 Oki Electric Ind Co Ltd 演算装置
JPH0644225B2 (ja) * 1986-03-27 1994-06-08 日本電気株式会社 浮動小数点丸め正規化回路
US4858166A (en) * 1986-09-19 1989-08-15 Performance Semiconductor Corporation Method and structure for performing floating point comparison
JPH0612862B2 (ja) * 1986-09-29 1994-02-16 ヤマハ株式会社 デイジタルフイルタ
JPH0740195B2 (ja) * 1986-10-04 1995-05-01 株式会社河合楽器製作所 電子楽器
JPH0782341B2 (ja) * 1986-10-04 1995-09-06 株式会社河合楽器製作所 電子楽器
US4841467A (en) * 1987-10-05 1989-06-20 General Electric Company Architecture to implement floating point multiply/accumulate operations
US4823260A (en) * 1987-11-12 1989-04-18 Intel Corporation Mixed-precision floating point operations from a single instruction opcode
JPH0776911B2 (ja) * 1988-03-23 1995-08-16 松下電器産業株式会社 浮動小数点演算装置
US4943941A (en) * 1989-01-13 1990-07-24 Bolt Beranek And Newman Inc. Floating point processor employing counter controlled shifting
US4969118A (en) * 1989-01-13 1990-11-06 International Business Machines Corporation Floating point unit for calculating A=XY+Z having simultaneous multiply and add
US4961162A (en) * 1989-01-13 1990-10-02 International Business Machines Corporation Multiprocessing system for performing floating point arithmetic operations
US4994996A (en) * 1989-02-03 1991-02-19 Digital Equipment Corporation Pipelined floating point adder for digital computer
US5111421A (en) * 1990-02-26 1992-05-05 General Electric Company System for performing addition and subtraction of signed magnitude floating point binary numbers
US5136536A (en) * 1990-05-04 1992-08-04 Weitek Corporation Floating-point ALU with parallel paths
JPH0480867A (ja) * 1990-07-23 1992-03-13 Mitsubishi Electric Corp 演算回路
JPH04290122A (ja) * 1991-03-19 1992-10-14 Fujitsu Ltd 数値表現変換装置
US5303174A (en) * 1991-10-07 1994-04-12 Nec Corporation Floating pointing arithmetic operation system
JPH05241792A (ja) * 1992-02-27 1993-09-21 Nec Corp 浮動小数点加減算方式および装置
EP0578950A3 (en) * 1992-07-15 1995-11-22 Ibm Method and apparatus for converting floating-point pixel values to byte pixel values by table lookup
US5375078A (en) * 1992-12-15 1994-12-20 International Business Machines Corporation Arithmetic unit for performing XY+B operation
GB2274730B (en) * 1993-01-30 1997-05-28 Motorola Inc A mantissa addition system for a floating point adder
US7174352B2 (en) 1993-06-03 2007-02-06 Network Appliance, Inc. File system image transfer
US6604118B2 (en) 1998-07-31 2003-08-05 Network Appliance, Inc. File system image transfer
KR0142803B1 (ko) * 1993-09-02 1998-07-15 모리시다 요이치 신호처리장치
US5509129A (en) * 1993-11-30 1996-04-16 Guttag; Karl M. Long instruction word controlling plural independent processor operations
US5673407A (en) * 1994-03-08 1997-09-30 Texas Instruments Incorporated Data processor having capability to perform both floating point operations and memory access in response to a single instruction
TW353732B (en) * 1994-03-31 1999-03-01 Ibm Processing system and method of operation
US5481719A (en) * 1994-09-09 1996-01-02 International Business Machines Corporation Exception handling method and apparatus for a microkernel data processing system
US5583805A (en) * 1994-12-09 1996-12-10 International Business Machines Corporation Floating-point processor having post-writeback spill stage
US5805475A (en) * 1995-02-10 1998-09-08 International Business Machines Corporation Load-store unit and method of loading and storing single-precision floating-point registers in a double-precision architecture
US5732005A (en) * 1995-02-10 1998-03-24 International Business Machines Corporation Single-precision, floating-point register array for floating-point units performing double-precision operations by emulation
US5809323A (en) * 1995-09-19 1998-09-15 International Business Machines Corporation Method and apparatus for executing fixed-point instructions within idle execution units of a superscalar processor
EP1291764A1 (de) * 1995-10-20 2003-03-12 Kabushiki Kaisha Toshiba Logische Schaltung und Verfahren zu deren Entwurf
US5956421A (en) * 1996-02-28 1999-09-21 Canon Kabushiki Kaisha Image processing method and apparatus for determining a binarization threshold value used for binarizing a multi-valued image and performing binarization processing
DE19625855C2 (de) * 1996-06-27 1998-06-10 Siemens Ag Verfahren und Signalauswerteeinrichtung zur Datenreduktion bei der Verarbeitung von Signalwerten mit einer digitalen Signalverarbeitungseinheit in einem Übertragungssystem
WO1998006030A1 (en) * 1996-08-07 1998-02-12 Sun Microsystems Multifunctional execution unit
US5963460A (en) * 1996-12-17 1999-10-05 Metaflow Technologies, Inc. Apparatus for computing transcendental functions quickly
US6049343A (en) * 1997-01-20 2000-04-11 Hitachi, Ltd. Graphics processing unit and graphics processing system
US6088445A (en) * 1997-08-01 2000-07-11 Crystal Semiconductor Corp. Adaptive filter system having mixed fixed point or floating point and block scale floating point operators
US7197625B1 (en) * 1997-10-09 2007-03-27 Mips Technologies, Inc. Alignment and ordering of vector elements for single instruction multiple data processing
US5864703A (en) * 1997-10-09 1999-01-26 Mips Technologies, Inc. Method for providing extended precision in SIMD vector arithmetic operations
US6490607B1 (en) * 1998-01-28 2002-12-03 Advanced Micro Devices, Inc. Shared FP and SIMD 3D multiplier
US6457130B2 (en) 1998-03-03 2002-09-24 Network Appliance, Inc. File access control in a multi-protocol file server
US6317844B1 (en) 1998-03-10 2001-11-13 Network Appliance, Inc. File server storage arrangement
US6343984B1 (en) 1998-11-30 2002-02-05 Network Appliance, Inc. Laminar flow duct cooling system
US6480872B1 (en) * 1999-01-21 2002-11-12 Sandcraft, Inc. Floating-point and integer multiply-add and multiply-accumulate
US7242414B1 (en) 1999-07-30 2007-07-10 Mips Technologies, Inc. Processor having a compare extension of an instruction set architecture
US6732259B1 (en) 1999-07-30 2004-05-04 Mips Technologies, Inc. Processor having a conditional branch extension of an instruction set architecture
JP2000293494A (ja) * 1999-04-09 2000-10-20 Fuji Xerox Co Ltd 並列計算装置および並列計算方法
US6697832B1 (en) 1999-07-30 2004-02-24 Mips Technologies, Inc. Floating-point processor with improved intermediate result handling
US6912559B1 (en) 1999-07-30 2005-06-28 Mips Technologies, Inc. System and method for improving the accuracy of reciprocal square root operations performed by a floating-point unit
US6714197B1 (en) 1999-07-30 2004-03-30 Mips Technologies, Inc. Processor having an arithmetic extension of an instruction set architecture
US7346643B1 (en) 1999-07-30 2008-03-18 Mips Technologies, Inc. Processor with improved accuracy for multiply-add operations
US6631392B1 (en) 1999-07-30 2003-10-07 Mips Technologies, Inc. Method and apparatus for predicting floating-point exceptions
US6205462B1 (en) 1999-10-06 2001-03-20 Cradle Technologies Digital multiply-accumulate circuit that can operate on both integer and floating point numbers simultaneously
US20040098439A1 (en) * 2000-02-22 2004-05-20 Bass Stephen L. Apparatus and method for sharing overflow/underflow compare hardware in a floating-point multiply-accumulate (FMAC) or floating-point adder (FADD) unit
US6671796B1 (en) * 2000-02-25 2003-12-30 Sun Microsystems, Inc. Converting an arbitrary fixed point value to a floating point value
US6996596B1 (en) 2000-05-23 2006-02-07 Mips Technologies, Inc. Floating-point processor with operating mode having improved accuracy and high performance
US7711763B2 (en) * 2001-02-21 2010-05-04 Mips Technologies, Inc. Microprocessor instructions for performing polynomial arithmetic operations
US7181484B2 (en) * 2001-02-21 2007-02-20 Mips Technologies, Inc. Extended-precision accumulation of multiplier output
US7599981B2 (en) * 2001-02-21 2009-10-06 Mips Technologies, Inc. Binary polynomial multiplier
US7162621B2 (en) 2001-02-21 2007-01-09 Mips Technologies, Inc. Virtual instruction expansion based on template and parameter selector information specifying sign-extension or concentration
US7003543B2 (en) * 2001-06-01 2006-02-21 Microchip Technology Incorporated Sticky z bit
US6985986B2 (en) * 2001-06-01 2006-01-10 Microchip Technology Incorporated Variable cycle interrupt disabling
US6552625B2 (en) 2001-06-01 2003-04-22 Microchip Technology Inc. Processor with pulse width modulation generator with fault input prioritization
US6952711B2 (en) * 2001-06-01 2005-10-04 Microchip Technology Incorporated Maximally negative signed fractional number multiplication
US6604169B2 (en) 2001-06-01 2003-08-05 Microchip Technology Incorporated Modulo addressing based on absolute offset
US6937084B2 (en) * 2001-06-01 2005-08-30 Microchip Technology Incorporated Processor with dual-deadtime pulse width modulation generator
US6976158B2 (en) * 2001-06-01 2005-12-13 Microchip Technology Incorporated Repeat instruction with interrupt
US7020788B2 (en) * 2001-06-01 2006-03-28 Microchip Technology Incorporated Reduced power option
US20020184566A1 (en) * 2001-06-01 2002-12-05 Michael Catherwood Register pointer trap
US6601160B2 (en) 2001-06-01 2003-07-29 Microchip Technology Incorporated Dynamically reconfigurable data space
US6934728B2 (en) * 2001-06-01 2005-08-23 Microchip Technology Incorporated Euclidean distance instructions
US7467178B2 (en) * 2001-06-01 2008-12-16 Microchip Technology Incorporated Dual mode arithmetic saturation processing
US20030005268A1 (en) * 2001-06-01 2003-01-02 Catherwood Michael I. Find first bit value instruction
US20030005269A1 (en) * 2001-06-01 2003-01-02 Conner Joshua M. Multi-precision barrel shifting
US20030028696A1 (en) * 2001-06-01 2003-02-06 Michael Catherwood Low overhead interrupt
US7007172B2 (en) * 2001-06-01 2006-02-28 Microchip Technology Incorporated Modified Harvard architecture processor having data memory space mapped to program memory space with erroneous execution protection
US6975679B2 (en) * 2001-06-01 2005-12-13 Microchip Technology Incorporated Configuration fuses for setting PWM options
US6728856B2 (en) 2001-06-01 2004-04-27 Microchip Technology Incorporated Modified Harvard architecture processor having program memory space mapped to data memory space
US20030023836A1 (en) * 2001-06-01 2003-01-30 Michael Catherwood Shadow register array control instructions
US6996597B2 (en) * 2001-06-15 2006-02-07 Centillium Communications, Inc. Increasing precision in multi-stage processing of digital signals
US6556046B1 (en) * 2001-07-17 2003-04-29 Microchip Technology Incorporated Functional pathway configuration at a system/IC interface
US20040021483A1 (en) * 2001-09-28 2004-02-05 Brian Boles Functional pathway configuration at a system/IC interface
US6552567B1 (en) 2001-09-28 2003-04-22 Microchip Technology Incorporated Functional pathway configuration at a system/IC interface
US6847378B2 (en) * 2002-03-07 2005-01-25 Sun Microsystems, Inc. System and method for performing scale and bias operations by preclamping input image data
US7236995B2 (en) 2002-12-27 2007-06-26 Arm Limited Data processing apparatus and method for converting a number between fixed-point and floating-point representations
US7928997B2 (en) * 2003-02-06 2011-04-19 Nvidia Corporation Digital image compositing using a programmable graphics processor
US20060101244A1 (en) * 2004-11-10 2006-05-11 Nvidia Corporation Multipurpose functional unit with combined integer and floating-point multiply-add pipeline
US8880571B2 (en) * 2006-05-05 2014-11-04 Microsoft Corporation High dynamic range data format conversions for digital media
US8054886B2 (en) * 2007-02-21 2011-11-08 Microsoft Corporation Signaling and use of chroma sample positioning information
JP2009049977A (ja) * 2007-07-26 2009-03-05 Yamaha Corp エコーキャンセラ
EA201000313A1 (ru) * 2007-09-05 2010-10-29 Сенсиэр Пти Лтд. Устройство для речевой связи, устройство для обработки сигналов и содержащее их устройство для защиты слуха
US20090164544A1 (en) * 2007-12-19 2009-06-25 Jeffrey Dobbek Dynamic range enhancement for arithmetic calculations in real-time control systems using fixed point hardware
US8572141B2 (en) * 2008-03-19 2013-10-29 International Business Machines Corporation Execution of fixed point instructions using a decimal floating point unit
JP4629750B2 (ja) * 2008-03-31 2011-02-09 日立オートモティブシステムズ株式会社 組み込み制御装置
US20120191955A1 (en) * 2011-01-20 2012-07-26 Jonsson Ragnar H Method and system for floating point acceleration on fixed point digital signal processors
GB2560766B (en) * 2017-03-24 2019-04-03 Imagination Tech Ltd Floating point to fixed point conversion
US10534578B1 (en) 2018-08-27 2020-01-14 Google Llc Multi-input floating-point adder

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1435080A (fr) * 1965-03-02 1966-04-15 Centre Nat Rech Scient Procédé pour améliorer les conditions d'utilisation d'une calculatrice arithmétique et machine à calculer utilisant ce procédé
US3551665A (en) * 1966-09-13 1970-12-29 Ibm Floating point binary adder utilizing completely sequential hardware
US3477063A (en) * 1967-10-26 1969-11-04 Ibm Controller for data processing system
US3697734A (en) * 1970-07-28 1972-10-10 Singer Co Digital computer utilizing a plurality of parallel asynchronous arithmetic units
US3829673A (en) * 1972-06-20 1974-08-13 Floating Point Syst Inc Floating point arithmetic unit adapted for converting a computer to floating point arithmetic
US3871578A (en) * 1972-10-10 1975-03-18 Digital Equipment Corp Data processing system for multiplying and intergerizing floating point numbers
US3961167A (en) * 1974-07-22 1976-06-01 Gte Automatic Electric Laboratories Incorporated PCM tone receiver using optimum statistical technique
US4075704A (en) * 1976-07-02 1978-02-21 Floating Point Systems, Inc. Floating point data processor for high speech operation
US4130879A (en) * 1977-07-15 1978-12-19 Honeywell Information Systems Inc. Apparatus for performing floating point arithmetic operations using submultiple storage
US4217657A (en) * 1978-10-18 1980-08-12 Honeywell Inc. Floating point arithmetic control
US4229801A (en) * 1978-12-11 1980-10-21 Data General Corporation Floating point processor having concurrent exponent/mantissa operation
US4366548A (en) * 1981-01-02 1982-12-28 Sperry Corporation Adder for exponent arithmetic
US4429370A (en) * 1981-04-23 1984-01-31 Data General Corporation Arithmetic unit for use in a data processing system for computing exponent results and detecting overflow and underflow conditions thereof
US4476537A (en) * 1981-06-11 1984-10-09 Data General Corporation Fixed point and floating point computation units using commonly shared control fields

Also Published As

Publication number Publication date
DE3177238D1 (de) 1991-02-07
EP0182963B1 (de) 1991-01-02
EP0051422A2 (de) 1982-05-12
US4592006A (en) 1986-05-27
EP0051422B1 (de) 1988-06-15
EP0182963A3 (en) 1986-10-01
EP0051422A3 (en) 1982-12-01
JPS6242296B2 (de) 1987-09-08
US4620292A (en) 1986-10-28
JPS5776634A (en) 1982-05-13
US4511990A (en) 1985-04-16
EP0182963A2 (de) 1986-06-04

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Legal Events

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8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee