JPS5582351A - Floatinggpoint processor - Google Patents

Floatinggpoint processor

Info

Publication number
JPS5582351A
JPS5582351A JP15984779A JP15984779A JPS5582351A JP S5582351 A JPS5582351 A JP S5582351A JP 15984779 A JP15984779 A JP 15984779A JP 15984779 A JP15984779 A JP 15984779A JP S5582351 A JPS5582351 A JP S5582351A
Authority
JP
Japan
Prior art keywords
fpu
mantissa
cpu
floating point
control
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.)
Granted
Application number
JP15984779A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0128409B2 (en, 2012
Inventor
Eru Fuitsupuru Deebitsudo
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.)
EMC Corp
Original Assignee
Data General 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 Data General Corp filed Critical Data General Corp
Publication of JPS5582351A publication Critical patent/JPS5582351A/ja
Publication of JPH0128409B2 publication Critical patent/JPH0128409B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/3001—Arithmetic instructions
    • G06F9/30014—Arithmetic instructions with variable precision
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/3004—Arrangements for executing specific machine instructions to perform operations on memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computing Systems (AREA)
  • Advance Control (AREA)
  • Complex Calculations (AREA)
JP15984779A 1978-12-11 1979-12-11 Floatinggpoint processor Granted JPS5582351A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/968,227 US4229801A (en) 1978-12-11 1978-12-11 Floating point processor having concurrent exponent/mantissa operation

Publications (2)

Publication Number Publication Date
JPS5582351A true JPS5582351A (en) 1980-06-21
JPH0128409B2 JPH0128409B2 (en, 2012) 1989-06-02

Family

ID=25513938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15984779A Granted JPS5582351A (en) 1978-12-11 1979-12-11 Floatinggpoint processor

Country Status (8)

Country Link
US (1) US4229801A (en, 2012)
JP (1) JPS5582351A (en, 2012)
AU (1) AU538983B2 (en, 2012)
CA (1) CA1123110A (en, 2012)
DE (1) DE2949375C2 (en, 2012)
FR (1) FR2447061B1 (en, 2012)
GB (1) GB2038049B (en, 2012)
NL (1) NL7908893A (en, 2012)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5776634A (en) * 1980-10-31 1982-05-13 Hitachi Ltd Digital signal processor
US4464716A (en) * 1981-05-22 1984-08-07 Data General Corporation Digital data processing system using unique formatting techniques for performing arithmetic ALU operations
US4468748A (en) * 1981-06-11 1984-08-28 Data General Corporation Floating point computation unit having means for rounding the floating point computation result
US4509116A (en) * 1982-04-21 1985-04-02 Digital Equipment Corporation Special instruction processing unit for data processing system
JPS59188740A (ja) * 1983-04-11 1984-10-26 Hitachi Ltd フロ−テイング加算器
US4750110A (en) * 1983-04-18 1988-06-07 Motorola, Inc. Method and apparatus for executing an instruction contingent upon a condition present in another data processor
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
US4758974A (en) * 1985-01-29 1988-07-19 American Telephone And Telegraph Company, At&T Bell Laboratories Most significant digit location
JPH07104771B2 (ja) * 1985-05-10 1995-11-13 株式会社日立製作所 計算機
US5070475A (en) * 1985-11-14 1991-12-03 Data General Corporation Floating point unit interface
US4763294A (en) * 1985-12-19 1988-08-09 Wang Laboratories, Inc. Method and apparatus for floating point operations
US4858166A (en) * 1986-09-19 1989-08-15 Performance Semiconductor Corporation Method and structure for performing floating point comparison
US4884231A (en) * 1986-09-26 1989-11-28 Performance Semiconductor Corporation Microprocessor system with extended arithmetic logic unit
US4890253A (en) * 1988-12-28 1989-12-26 International Business Machines Corporation Predetermination of result conditions of decimal operations
US4999803A (en) * 1989-06-29 1991-03-12 Digital Equipment Corporation Floating point arithmetic system and method
US5253349A (en) * 1991-01-30 1993-10-12 International Business Machines Corporation Decreasing processing time for type 1 dyadic instructions
US5195052A (en) * 1991-12-13 1993-03-16 International Business Machines Corporation Circuit and method for performing integer power operations
JP3421933B2 (ja) * 1994-10-31 2003-06-30 弘之 河▲崎▼ 演算処理装置及び電子計算機
KR100329338B1 (ko) * 1994-12-02 2002-07-18 피터 엔. 데트킨 복합피연산자의팩연산을수행하는마이크로프로세서
US5687340A (en) * 1995-05-16 1997-11-11 Hewlett-Packard Company Reduced area floating point processor control logic utilizing a decoder between a control unit and the FPU
US5852726A (en) * 1995-12-19 1998-12-22 Intel Corporation Method and apparatus for executing two types of instructions that specify registers of a shared logical register file in a stack and a non-stack referenced manner
US5857096A (en) * 1995-12-19 1999-01-05 Intel Corporation Microarchitecture for implementing an instruction to clear the tags of a stack reference register file
US6792523B1 (en) 1995-12-19 2004-09-14 Intel Corporation Processor with instructions that operate on different data types stored in the same single logical register file
US5701508A (en) 1995-12-19 1997-12-23 Intel Corporation Executing different instructions that cause different data type operations to be performed on single logical register file
US5940859A (en) 1995-12-19 1999-08-17 Intel Corporation Emptying packed data state during execution of packed data instructions
US5835748A (en) * 1995-12-19 1998-11-10 Intel Corporation Method for executing different sets of instructions that cause a processor to perform different data type operations on different physical registers files that logically appear to software as a single aliased register file
JP2000068834A (ja) 1998-08-20 2000-03-03 Hiroyuki Kawasaki 信号変換方法及び信号変換器
US7254696B2 (en) * 2002-12-12 2007-08-07 Alacritech, Inc. Functional-level instruction-set computer architecture for processing application-layer content-service requests such as file-access requests

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49100938A (en, 2012) * 1972-10-10 1974-09-24

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3551665A (en) * 1966-09-13 1970-12-29 Ibm Floating point binary adder utilizing completely sequential hardware
US3557357A (en) * 1967-07-14 1971-01-19 Gen Electric Data processing system having time-shared storage means
US3697734A (en) * 1970-07-28 1972-10-10 Singer Co Digital computer utilizing a plurality of parallel asynchronous arithmetic units
US3871578A (en) * 1972-10-10 1975-03-18 Digital Equipment Corp Data processing system for multiplying and intergerizing floating point numbers
US4075704A (en) * 1976-07-02 1978-02-21 Floating Point Systems, Inc. Floating point data processor for high speech operation
US4128876A (en) * 1977-04-28 1978-12-05 International Business Machines Corporation Synchronous microcode generated interface for system of microcoded data processors
US4130879A (en) * 1977-07-15 1978-12-19 Honeywell Information Systems Inc. Apparatus for performing floating point arithmetic operations using submultiple storage
US4161784A (en) * 1978-01-05 1979-07-17 Honeywell Information Systems, Inc. Microprogrammable floating point arithmetic unit capable of performing arithmetic operations on long and short operands

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49100938A (en, 2012) * 1972-10-10 1974-09-24

Also Published As

Publication number Publication date
CA1123110A (en) 1982-05-04
GB2038049B (en) 1983-07-20
DE2949375A1 (de) 1980-06-19
NL7908893A (nl) 1980-06-13
DE2949375C2 (de) 1987-03-19
AU5223579A (en) 1980-07-10
AU538983B2 (en) 1984-09-06
JPH0128409B2 (en, 2012) 1989-06-02
GB2038049A (en) 1980-07-16
US4229801A (en) 1980-10-21
FR2447061A1 (fr) 1980-08-14
FR2447061B1 (fr) 1986-02-21

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