CA2002895A1 - Arithmetic unit - Google Patents

Arithmetic unit

Info

Publication number
CA2002895A1
CA2002895A1 CA2002895A CA2002895A CA2002895A1 CA 2002895 A1 CA2002895 A1 CA 2002895A1 CA 2002895 A CA2002895 A CA 2002895A CA 2002895 A CA2002895 A CA 2002895A CA 2002895 A1 CA2002895 A1 CA 2002895A1
Authority
CA
Canada
Prior art keywords
clock signal
unit
devices
period
arithmetic unit
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
CA2002895A
Other languages
French (fr)
Other versions
CA2002895C (en
Inventor
William S. Zuk
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.)
Samsung Electronics Co Ltd
Original Assignee
Wang Laboratories Inc
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 Wang Laboratories Inc filed Critical Wang Laboratories Inc
Publication of CA2002895A1 publication Critical patent/CA2002895A1/en
Application granted granted Critical
Publication of CA2002895C publication Critical patent/CA2002895C/en
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
    • 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
    • G06F9/38—Concurrent instruction execution, e.g. pipeline, look ahead
    • G06F9/3877—Concurrent instruction execution, e.g. pipeline, look ahead using a slave processor, e.g. coprocessor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/12—Synchronisation of different clock signals provided by a plurality of clock generators
    • 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
    • G06F9/22—Microcontrol or microprogram arrangements
    • G06F9/26—Address formation of the next micro-instruction ; Microprogram storage or retrieval arrangements
    • 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
    • G06F9/30003—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; 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
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/30025—Format conversion instructions, e.g. Floating-Point to Integer, decimal conversion
    • 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
    • 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
    • G06F9/30181—Instruction operation extension or modification
    • 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
    • G06F9/30181—Instruction operation extension or modification
    • G06F9/30196—Instruction operation extension or modification using decoder, e.g. decoder per instruction set, adaptable or programmable decoders

Abstract

ARITHMETIC UNIT

ABSTRACT OF THE DISCLOSURE

An information processing system includes a first data processing device (10) and a second data processing device (12) each of which is capable if independent instruction execution during instruction cycles having a period which is a multiple of a periodic unit clock signal period. The devices are disclosed to be an arithmetic unit and a central processor coupled together by an interface (14). Each of the data processing devices (10, 12) include a clock generation device (180) having an input coupled to the unit clock signal for generating an associated instruction cycle clock signal which has a period which is a multiple of the unit clock signal period. The clock generation device (180) is further operable for suspending the generation of a next instruction cycle clock signal and for beginning the next instruction cycle clock signal in synchronism with a transition of the unit clock signal. The devices (10, 12) each request synchronization of their respective clocks which are then automatically synchronized to the other devices clock during a transition of the unit clock, allowing for instructions and operands to be synchronously passed between the central processor to the arithmetic unit.
CA002002895A 1988-12-29 1989-11-14 Arithmetic unit Expired - Fee Related CA2002895C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/291,847 US5062041A (en) 1988-12-29 1988-12-29 Processor/coprocessor interface apparatus including microinstruction clock synchronization
US291,847 1988-12-29

Publications (2)

Publication Number Publication Date
CA2002895A1 true CA2002895A1 (en) 1990-06-29
CA2002895C CA2002895C (en) 1994-04-26

Family

ID=23122108

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002002895A Expired - Fee Related CA2002895C (en) 1988-12-29 1989-11-14 Arithmetic unit

Country Status (2)

Country Link
US (2) US5062041A (en)
CA (1) CA2002895C (en)

Families Citing this family (15)

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US5461723A (en) * 1990-04-05 1995-10-24 Mit Technology Corp. Dual channel data block transfer bus
US5287247A (en) * 1990-09-21 1994-02-15 Lsi Logic Corporation Computer system module assembly
CA2074769C (en) * 1991-08-09 2001-03-20 International Business Machines Corporation Formula processor
US5553276A (en) * 1993-06-30 1996-09-03 International Business Machines Corporation Self-time processor with dynamic clock generator having plurality of tracking elements for outputting sequencing signals to functional units
US5479626A (en) * 1993-07-26 1995-12-26 Rockwell International Corporation Signal processor contexts with elemental and reserved group addressing
US5495588A (en) * 1993-11-18 1996-02-27 Allen-Bradley Company, Inc. Programmable controller having joined relay language processor and general purpose processor
US5572207A (en) * 1994-09-23 1996-11-05 International Business Machines Corporation Method and apparatus for numeric-to-string conversion
TW329487B (en) * 1996-10-29 1998-04-11 Mitsubishi Electric Corp Device for processing data and method therefor
US6754804B1 (en) * 2000-12-29 2004-06-22 Mips Technologies, Inc. Coprocessor interface transferring multiple instructions simultaneously along with issue path designation and/or issue order designation for the instructions
US7237090B1 (en) 2000-12-29 2007-06-26 Mips Technologies, Inc. Configurable out-of-order data transfer in a coprocessor interface
US7287147B1 (en) 2000-12-29 2007-10-23 Mips Technologies, Inc. Configurable co-processor interface
US7168066B1 (en) 2001-04-30 2007-01-23 Mips Technologies, Inc. Tracing out-of order load data
US7237216B2 (en) * 2003-02-21 2007-06-26 Infineon Technologies Ag Clock gating approach to accommodate infrequent additional processing latencies
US20060090092A1 (en) * 2004-10-25 2006-04-27 Verhulst Anton H Clock timing adjustment
US11132203B2 (en) * 2014-08-14 2021-09-28 Texas Instruments Incorporated System and method for synchronizing instruction execution between a central processor and a coprocessor

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871578A (en) * 1972-10-10 1975-03-18 Digital Equipment Corp Data processing system for multiplying and intergerizing floating point numbers
US4241418A (en) * 1977-11-23 1980-12-23 Honeywell Information Systems Inc. Clock system having a dynamically selectable clock period
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
DE2853523C2 (en) * 1978-12-12 1981-10-01 Ibm Deutschland Gmbh, 7000 Stuttgart Decentralized generation of clock control signals
US4386401A (en) * 1980-07-28 1983-05-31 Sperry Corporation High speed processing restarting apparatus
JPS57191703A (en) * 1981-05-20 1982-11-25 Fanuc Ltd Sequence controller
US4612628A (en) * 1983-02-14 1986-09-16 Data General Corp. Floating-point unit constructed of identical modules
US4613936A (en) * 1983-02-25 1986-09-23 International Business Machines Corporation Centralized generation of data transfer acknowledge pulses for microprocessors
US4589067A (en) * 1983-05-27 1986-05-13 Analogic Corporation Full floating point vector processor with dynamically configurable multifunction pipelined ALU
JPS6043751A (en) * 1983-08-18 1985-03-08 Hitachi Ltd Information processor
US4648034A (en) * 1984-08-27 1987-03-03 Zilog, Inc. Busy signal interface between master and slave processors in a computer system
US4729093A (en) * 1984-09-26 1988-03-01 Motorola, Inc. Microcomputer which prioritizes instruction prefetch requests and data operand requests
US4718003A (en) * 1985-02-15 1988-01-05 General Electric Co. Method and apparatus for exchanging data between data processing units
US4763294A (en) * 1985-12-19 1988-08-09 Wang Laboratories, Inc. Method and apparatus for floating point operations
US5062040A (en) * 1986-12-22 1991-10-29 At&T Bell Laboratories Handling of notification of asynchronous events by user and stub processes of a distributed process executing on a plurality of processors of a multi-processor system
US4992938A (en) * 1987-07-01 1991-02-12 International Business Machines Corporation Instruction control mechanism for a computing system with register renaming, map table and queues indicating available registers
US4943915A (en) * 1987-09-29 1990-07-24 Digital Equipment Corporation Apparatus and method for synchronization of a coprocessor unit in a pipelined central processing unit
US4991078A (en) * 1987-09-29 1991-02-05 Digital Equipment Corporation Apparatus and method for a pipelined central processing unit in a data processing system
US4862407A (en) * 1987-10-05 1989-08-29 Motorola, Inc. Digital signal processing apparatus

Also Published As

Publication number Publication date
US5062041A (en) 1991-10-29
CA2002895C (en) 1994-04-26
US5233698A (en) 1993-08-03

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