GB2021823A - Data transfer system - Google Patents

Data transfer system

Info

Publication number
GB2021823A
GB2021823A GB7913088A GB7913088A GB2021823A GB 2021823 A GB2021823 A GB 2021823A GB 7913088 A GB7913088 A GB 7913088A GB 7913088 A GB7913088 A GB 7913088A GB 2021823 A GB2021823 A GB 2021823A
Authority
GB
United Kingdom
Prior art keywords
digital
bit
buffers
buffer
data transfer
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
GB7913088A
Other versions
GB2021823B (en
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.)
Intel Corp
Original Assignee
Intel 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 Intel Corp filed Critical Intel Corp
Publication of GB2021823A publication Critical patent/GB2021823A/en
Application granted granted Critical
Publication of GB2021823B publication Critical patent/GB2021823B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4004—Coupling between buses
    • G06F13/4009—Coupling between buses with data restructuring
    • G06F13/4018—Coupling between buses with data restructuring with data-width conversion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/04—Addressing variable-length words or parts of words

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Bus Control (AREA)

Abstract

A digital processor, digital memory or other digital information circuit is made compatible in a digital computer system which includes e.g., both 8 and 16 bit digital users within the system. The 16 bit system bus DAT is divided into a lower and an upper half 26a, 26b respectively with each half having separate lower and upper buffers 24a, 24b respectively. A swap byte buffer 28 (or, in an alternative position, 30), is provided for selectively coupling digital information on the upper half 22b of the local bus to the lower half 26a of the system bus, or to this via the lower buffer 24a. The upper, lower, and swap byte buffers are selectively enabled in response to a discrete command signal and to the least significant bit of an address. <IMAGE>
GB7913088A 1978-05-30 1979-04-12 Data transfer system Expired GB2021823B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91010378A 1978-05-30 1978-05-30

Publications (2)

Publication Number Publication Date
GB2021823A true GB2021823A (en) 1979-12-05
GB2021823B GB2021823B (en) 1983-04-27

Family

ID=25428316

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7913088A Expired GB2021823B (en) 1978-05-30 1979-04-12 Data transfer system

Country Status (7)

Country Link
JP (2) JPS54157048A (en)
CA (1) CA1129110A (en)
DE (1) DE2921419A1 (en)
FR (1) FR2427648A1 (en)
GB (1) GB2021823B (en)
HK (1) HK14285A (en)
SG (1) SG61084G (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051870A1 (en) * 1980-11-06 1982-05-19 Nec Corporation Information transferring apparatus
EP0057096A2 (en) * 1981-01-22 1982-08-04 Nec Corporation Information processing unit
EP0099620A2 (en) * 1982-04-21 1984-02-01 Digital Equipment Corporation Memory controller with data rotation arrangement
EP0108418A2 (en) * 1982-11-09 1984-05-16 Siemens Aktiengesellschaft Device for the microprogrammed control of information transfer, and method for its operation
EP0127007A2 (en) * 1983-05-27 1984-12-05 International Business Machines Corporation Data processing interface apparatus
FR2548489A1 (en) * 1983-06-30 1985-01-04 Num Sa COUNTING CIRCUIT IN PARTICULAR FOR ASSOCIATED WITH AN INCREMENTAL SENSOR AND CAPABLE OF COOPERATING WITH AN EIGHT OR SIXTEEN BINARY COMPUTER
EP0177156A2 (en) * 1984-08-24 1986-04-09 Advanced Micro Devices, Inc. A method & apparatus for transferring data from a smaller to a larger register
EP0187293A2 (en) * 1984-12-11 1986-07-16 Kabushiki Kaisha Toshiba A microprocessor device with variable memory capacity
EP0189638A1 (en) * 1984-12-10 1986-08-06 Ing. C. Olivetti & C., S.p.A. Bus width adapter
EP0189523A2 (en) * 1985-01-31 1986-08-06 Kabushiki Kaisha Toshiba Microprocessor system
FR2635892A1 (en) * 1988-08-29 1990-03-02 Mitsubishi Electric Corp INTEGRATED CIRCUIT BOARD WITH SWITCHABLE BUS STRUCTURE
EP0362050A2 (en) * 1988-09-28 1990-04-04 Fujitsu Limited Memory card
FR2641630A1 (en) * 1989-01-07 1990-07-13 Diehl Gmbh & Co UNIVERSAL BUS SYSTEM
EP0418906A2 (en) * 1989-09-21 1991-03-27 Oki Electric Industry Co., Ltd. Card type integrated circuit applicable to systems with different bits
EP0460853A2 (en) * 1990-06-06 1991-12-11 NCR International, Inc. Memory system
EP0588607A1 (en) * 1992-09-16 1994-03-23 Matsushita Electric Industrial Co., Ltd. Data processing apparatus with improved data throughput
EP0840228A2 (en) 1996-10-23 1998-05-06 Texas Instruments Inc. Programmable memory access

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1121031B (en) * 1979-09-19 1986-03-26 Olivetti & Co Spa MULTIPROCESSOR DATA PROCESSING SYSTEM
JPS56132624A (en) * 1980-03-19 1981-10-17 Toshiba Corp Information processor
US4371928A (en) * 1980-04-15 1983-02-01 Honeywell Information Systems Inc. Interface for controlling information transfers between main data processing systems units and a central subsystem
DE3400673A1 (en) * 1984-01-11 1985-07-18 Robert Bosch Gmbh, 7000 Stuttgart Microcomputer
JPS60160425A (en) * 1984-02-01 1985-08-22 Hitachi Ltd Connecting circuit
BG45007A1 (en) * 1987-03-19 1989-03-15 Khristo A Turlakov
GB2211326B (en) * 1987-10-16 1991-12-11 Hitachi Ltd Address bus control apparatus
JPH01300361A (en) * 1988-05-28 1989-12-04 Nec Eng Ltd Microprocessor system
JP2568510Y2 (en) * 1992-01-13 1998-04-15 日産ディーゼル工業株式会社 Particulate trap filter regeneration device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1254929A (en) * 1969-03-26 1971-11-24 Standard Telephones Cables Ltd Improvements in or relating to digital computers
JPS5846727B2 (en) * 1975-02-20 1983-10-18 パナフアコム カブシキガイシヤ Memory access information
CA1120123A (en) * 1976-11-11 1982-03-16 Richard P. Kelly Automatic data steering and data formatting mechanism

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051870A1 (en) * 1980-11-06 1982-05-19 Nec Corporation Information transferring apparatus
EP0057096A2 (en) * 1981-01-22 1982-08-04 Nec Corporation Information processing unit
EP0057096A3 (en) * 1981-01-22 1984-05-16 Nec Corporation Information processing unit
EP0217479A2 (en) * 1981-01-22 1987-04-08 Nec Corporation Information processing unit
EP0217479A3 (en) * 1981-01-22 1987-08-19 Nec Corporation Information processing unit
EP0099620A2 (en) * 1982-04-21 1984-02-01 Digital Equipment Corporation Memory controller with data rotation arrangement
EP0099620A3 (en) * 1982-04-21 1986-01-22 Digital Equipment Corporation Memory controller with data rotation arrangement
EP0108418A2 (en) * 1982-11-09 1984-05-16 Siemens Aktiengesellschaft Device for the microprogrammed control of information transfer, and method for its operation
EP0108418A3 (en) * 1982-11-09 1986-11-26 Siemens Aktiengesellschaft Berlin Und Munchen Device for the microprogrammed control of information transfer, and method for its operation
EP0127007A3 (en) * 1983-05-27 1987-05-20 International Business Machines Corporation Data processing interface apparatus
EP0127007A2 (en) * 1983-05-27 1984-12-05 International Business Machines Corporation Data processing interface apparatus
FR2548489A1 (en) * 1983-06-30 1985-01-04 Num Sa COUNTING CIRCUIT IN PARTICULAR FOR ASSOCIATED WITH AN INCREMENTAL SENSOR AND CAPABLE OF COOPERATING WITH AN EIGHT OR SIXTEEN BINARY COMPUTER
EP0180680A1 (en) * 1983-06-30 1986-05-14 NUM S.A. (Société anonyme) Counting circuit, in particular for an incremental sensor and capable of cooperating with an eight or sixteen bits processor
EP0177156A3 (en) * 1984-08-24 1988-07-06 Advanced Micro Devices, Inc. A method & apparatus for transferring data from a smaller to a larger register
EP0177156A2 (en) * 1984-08-24 1986-04-09 Advanced Micro Devices, Inc. A method & apparatus for transferring data from a smaller to a larger register
EP0189638A1 (en) * 1984-12-10 1986-08-06 Ing. C. Olivetti & C., S.p.A. Bus width adapter
US4766538A (en) * 1984-12-11 1988-08-23 Kabushiki Kaisha Toshiba Microprocessor having variable data width
EP0187293A2 (en) * 1984-12-11 1986-07-16 Kabushiki Kaisha Toshiba A microprocessor device with variable memory capacity
EP0187293A3 (en) * 1984-12-11 1988-06-15 Kabushiki Kaisha Toshiba A microprocessor device with variable memory capacity
EP0189523A3 (en) * 1985-01-31 1988-08-24 Kabushiki Kaisha Toshiba Microprocessor system
US4860198A (en) * 1985-01-31 1989-08-22 Kabushiki Kaisha Toshiba Microprocessor system
EP0189523A2 (en) * 1985-01-31 1986-08-06 Kabushiki Kaisha Toshiba Microprocessor system
GB2222471B (en) * 1988-08-29 1992-12-09 Mitsubishi Electric Corp Ic card with switchable bus structure
FR2635892A1 (en) * 1988-08-29 1990-03-02 Mitsubishi Electric Corp INTEGRATED CIRCUIT BOARD WITH SWITCHABLE BUS STRUCTURE
GB2222471A (en) * 1988-08-29 1990-03-07 Mitsubishi Electric Corp IC card with switchable bus structure
US5055661A (en) * 1988-08-29 1991-10-08 Mitsubishi Denki Kabushiki Kaisha Ic card with switchable bus structure
EP0362050A2 (en) * 1988-09-28 1990-04-04 Fujitsu Limited Memory card
EP0362050A3 (en) * 1988-09-28 1991-04-03 Fujitsu Limited Memory card
FR2641630A1 (en) * 1989-01-07 1990-07-13 Diehl Gmbh & Co UNIVERSAL BUS SYSTEM
EP0418906A2 (en) * 1989-09-21 1991-03-27 Oki Electric Industry Co., Ltd. Card type integrated circuit applicable to systems with different bits
EP0418906A3 (en) * 1989-09-21 1992-08-05 Oki Electric Industry Co., Ltd. Card type integrated circuit applicable to systems with different bits
US5196994A (en) * 1989-09-21 1993-03-23 Oki Electric Industry Co., Ltd. Card type integrated circuit and respective 8/16-bit card connector
EP0460853A2 (en) * 1990-06-06 1991-12-11 NCR International, Inc. Memory system
EP0460853A3 (en) * 1990-06-06 1993-01-27 Ncr Corporation Memory system
EP0588607A1 (en) * 1992-09-16 1994-03-23 Matsushita Electric Industrial Co., Ltd. Data processing apparatus with improved data throughput
US5481679A (en) * 1992-09-16 1996-01-02 Matsushita Electric Industrial Co., Ltd. Data processing apparatus having bus switches for selectively connecting buses to improve data throughput
EP0840228A2 (en) 1996-10-23 1998-05-06 Texas Instruments Inc. Programmable memory access
EP0840228A3 (en) * 1996-10-23 2000-04-26 Texas Instruments Inc. Programmable memory access

Also Published As

Publication number Publication date
JPS6335152U (en) 1988-03-07
DE2921419A1 (en) 1979-12-13
JPS54157048A (en) 1979-12-11
SG61084G (en) 1985-03-15
FR2427648B1 (en) 1985-03-01
DE2921419C2 (en) 1990-12-20
HK14285A (en) 1985-03-08
FR2427648A1 (en) 1979-12-28
CA1129110A (en) 1982-08-03
GB2021823B (en) 1983-04-27

Similar Documents

Publication Publication Date Title
GB2021823A (en) Data transfer system
AU589815B2 (en) Bus interface circuit for digital data processor
JPS5687282A (en) Data processor
TW360837B (en) Data interface and a high speed communication system using the same
EP0133015A3 (en) Data transfer system
KR900015008A (en) Data processor
EP0217479A3 (en) Information processing unit
DE59704623D1 (en) Aufdatverfahren
EP0164972A3 (en) Shared memory multiprocessor system
JPS55108027A (en) Processor system
JPS5487148A (en) Data processing system by multiplex processor
JPS57103547A (en) Bit word access circuit
EP0391537A3 (en) Lock converting bus-to-bus interface system
JPS54140439A (en) Composite computer device
JPS55108030A (en) Data transfer control system
JPS5643896A (en) Key telephone control circuit
JPS5690355A (en) Data processing unit
JPS5586237A (en) Bit rate conversion system
JPS57147749A (en) Picture data transfer device
EP0369964A3 (en) Multiple data format interface
JPS5553720A (en) Data transfer control system
JPS5413228A (en) Interface circuit of auxiliary memory unit
JPS5567985A (en) Information processor
JPS55146530A (en) Data processing device
JPS57143781A (en) Control system for storage device

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee