JPH02213938A - 演算装置 - Google Patents

演算装置

Info

Publication number
JPH02213938A
JPH02213938A JP1328603A JP32860389A JPH02213938A JP H02213938 A JPH02213938 A JP H02213938A JP 1328603 A JP1328603 A JP 1328603A JP 32860389 A JP32860389 A JP 32860389A JP H02213938 A JPH02213938 A JP H02213938A
Authority
JP
Japan
Prior art keywords
operand
sign
magnitude
result
digit
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
JP1328603A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0447333B2 (OSRAM
Inventor
John D Jabusch
ジヨン・デヴイド・ジヤバツシユ
Linda A Kovacs
リンダ・アン・カバクス
Timothy G Plzak
テイモシイー・ジエラルド・プルザツク
Robert R Richardson
ロバート・レイスト・レチヤードソン
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of JPH02213938A publication Critical patent/JPH02213938A/ja
Publication of JPH0447333B2 publication Critical patent/JPH0447333B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F7/491—Computations with decimal numbers radix 12 or 20.
    • G06F7/492—Computations with decimal numbers radix 12 or 20. using a binary weighted representation within each denomination
    • G06F7/493—Computations with decimal numbers radix 12 or 20. using a binary weighted representation within each denomination the representation being the natural binary coded representation, i.e. 8421-code
    • G06F7/494—Adding; Subtracting
    • 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
    • G06F9/30036—Instructions to perform operations on packed data, e.g. vector, tile or matrix operations
    • 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
    • G06F9/30094—Condition code generation, e.g. Carry, Zero flag
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F2207/3828—Multigauge devices, i.e. capable of handling packed numbers without unpacking them
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F2207/492—Indexing scheme relating to groups G06F7/492 - G06F7/496
    • G06F2207/4924—Digit-parallel adding or subtracting

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Executing Machine-Instructions (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
JP1328603A 1988-12-28 1989-12-20 演算装置 Granted JPH02213938A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US291556 1988-12-28
US07/291,556 US4890253A (en) 1988-12-28 1988-12-28 Predetermination of result conditions of decimal operations

Publications (2)

Publication Number Publication Date
JPH02213938A true JPH02213938A (ja) 1990-08-27
JPH0447333B2 JPH0447333B2 (OSRAM) 1992-08-03

Family

ID=23120787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1328603A Granted JPH02213938A (ja) 1988-12-28 1989-12-20 演算装置

Country Status (3)

Country Link
US (1) US4890253A (OSRAM)
EP (1) EP0375948A3 (OSRAM)
JP (1) JPH02213938A (OSRAM)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5201056A (en) * 1990-05-02 1993-04-06 Motorola, Inc. RISC microprocessor architecture with multi-bit tag extended instructions for selectively attaching tag from either instruction or input data to arithmetic operation output
US5253349A (en) * 1991-01-30 1993-10-12 International Business Machines Corporation Decreasing processing time for type 1 dyadic instructions
US5717947A (en) * 1993-03-31 1998-02-10 Motorola, Inc. Data processing system and method thereof
TW342483B (en) * 1997-11-14 1998-10-11 Winbond Electronics Corp Serial in-circuit emulator architecture
US10067744B2 (en) * 2016-12-08 2018-09-04 International Business Machines Corporation Overflow detection for sign-magnitude adders

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694642A (en) * 1970-05-04 1972-09-26 Computer Design Corp Add/subtract apparatus for binary coded decimal numbers
US4086474A (en) * 1976-09-30 1978-04-25 Honeywell Information Systems Inc. Multiplication technique in a data processing system
US4229801A (en) * 1978-12-11 1980-10-21 Data General Corporation Floating point processor having concurrent exponent/mantissa operation
US4288850A (en) * 1979-01-02 1981-09-08 Honeywell Information Systems Inc. Apparatus for identification and removal of a sign signal character superimposed
US4320464A (en) * 1980-05-05 1982-03-16 Control Data Corporation Binary divider with carry-save adders
US4460970A (en) * 1981-05-22 1984-07-17 Data General Corporation Digital data processing system using unique techniques for handling the leading digits and the signs of operands in arithmetic operations
JPS59149541A (ja) * 1983-01-28 1984-08-27 Toshiba Corp 処理条件コード生成／設定方式
US4761756A (en) * 1983-08-24 1988-08-02 Amdahl Corporation Signed multiplier with three port adder and automatic adjustment for signed operands
US4785393A (en) * 1984-07-09 1988-11-15 Advanced Micro Devices, Inc. 32-Bit extended function arithmetic-logic unit on a single chip
JPS61275936A (ja) * 1985-05-30 1986-12-06 Yokogawa Hewlett Packard Ltd 条件決定装置

Also Published As

Publication number Publication date
JPH0447333B2 (OSRAM) 1992-08-03
US4890253A (en) 1989-12-26
EP0375948A2 (en) 1990-07-04
EP0375948A3 (en) 1992-03-04

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