CA1148665A - Microcomputer arranged for direct memory access - Google Patents

Microcomputer arranged for direct memory access

Info

Publication number
CA1148665A
CA1148665A CA000359204A CA359204A CA1148665A CA 1148665 A CA1148665 A CA 1148665A CA 000359204 A CA000359204 A CA 000359204A CA 359204 A CA359204 A CA 359204A CA 1148665 A CA1148665 A CA 1148665A
Authority
CA
Canada
Prior art keywords
address
register
data
state
memory access
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
CA000359204A
Other languages
English (en)
French (fr)
Inventor
Donald E. Blahut
Victor K. Huang
Richard L. Townsend, Jr.
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.)
AT&T Inc
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA1148665A publication Critical patent/CA1148665A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/28—Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal
    • G06F13/285—Halt processor DMA

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Executing Machine-Instructions (AREA)
CA000359204A 1979-08-31 1980-08-28 Microcomputer arranged for direct memory access Expired CA1148665A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/071,750 US4348720A (en) 1979-08-31 1979-08-31 Microcomputer arranged for direct memory access
US071,750 1979-08-31

Publications (1)

Publication Number Publication Date
CA1148665A true CA1148665A (en) 1983-06-21

Family

ID=22103332

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000359204A Expired CA1148665A (en) 1979-08-31 1980-08-28 Microcomputer arranged for direct memory access

Country Status (6)

Country Link
US (1) US4348720A (OSRAM)
EP (1) EP0034634B1 (OSRAM)
JP (1) JPS56500907A (OSRAM)
CA (1) CA1148665A (OSRAM)
DE (1) DE3071430D1 (OSRAM)
WO (1) WO1981000631A1 (OSRAM)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3273507D1 (en) * 1981-03-20 1986-11-06 Fujitsu Ltd A one chip microcomputer
US4495563A (en) * 1981-07-02 1985-01-22 Texas Instruments Incorporated Microcomputer having separate access to complete microcode words and partial microcode words
DE3587643T2 (de) * 1984-03-02 1994-03-24 Nippon Electric Co Informationsverarbeitungseinheit mit Unterbrechungsfunktion.
US4787025A (en) * 1984-03-06 1988-11-22 International Business Machines Corporation Remote fan out facility for data terminals
JP2618223B2 (ja) * 1984-07-27 1997-06-11 株式会社日立製作所 シングルチツプマイクロコンピユータ
KR860007588A (ko) * 1985-03-25 1986-10-15 미쓰다 가쓰시게 데이터 처리장치
GB2188175B (en) * 1986-03-18 1990-02-07 Stc Plc Data processing arrangement
US5099417A (en) * 1987-03-13 1992-03-24 Texas Instruments Incorporated Data processing device with improved direct memory access
US4912636A (en) * 1987-03-13 1990-03-27 Magar Surendar S Data processing device with multiple on chip memory buses
US5175841A (en) * 1987-03-13 1992-12-29 Texas Instruments Incorporated Data processing device with multiple on-chip memory buses
DE3852928T2 (de) * 1987-11-27 1995-10-05 Nippon Electric Co Datenprozessor mit A/D-Umsetzer, um mehrere analoge Eingabekanäle in Digitaldaten umzusetzen.
DE68927015D1 (de) * 1988-02-08 1996-10-02 Fujitsu Ltd Direktspeicherzugriffssteuerung
US5890220A (en) * 1991-02-05 1999-03-30 Hitachi, Ltd. Address conversion apparatus accessible to both I/O devices and processor and having a reduced number of index buffers
US5659797A (en) * 1991-06-24 1997-08-19 U.S. Philips Corporation Sparc RISC based computer system including a single chip processor with memory management and DMA units coupled to a DRAM interface
DE69327504T2 (de) * 1992-10-19 2000-08-10 Koninklijke Philips Electronics N.V., Eindhoven Datenprozessor mit Operationseinheiten, die gemeinsam Gruppen von Registerspeichern benutzen
DE69628326D1 (de) * 1995-10-06 2003-06-26 Patriot Scient Corp Architektur für einen risc-mikroprozessor
US6560652B1 (en) 1998-11-20 2003-05-06 Legerity, Inc. Method and apparatus for accessing variable sized blocks of data
US8738159B2 (en) * 2004-03-15 2014-05-27 Siemens Industry, Inc. System and method for accessing PLC data on demand

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673576A (en) * 1970-07-13 1972-06-27 Eg & G Inc Programmable computer-peripheral interface
US4181938A (en) * 1975-10-15 1980-01-01 Tokyo Shibaura Electric Co., Ltd. Processor device
US4075691A (en) * 1975-11-06 1978-02-21 Bunker Ramo Corporation Communication control unit
US4137565A (en) * 1977-01-10 1979-01-30 Xerox Corporation Direct memory access module for a controller
US4121283A (en) * 1977-01-17 1978-10-17 Cromemco Inc. Interface device for encoding a digital image for a CRT display
US4122520A (en) * 1977-05-23 1978-10-24 General Electric Company Microcomputer controller and direct memory access apparatus therefor
US4145739A (en) * 1977-06-20 1979-03-20 Wang Laboratories, Inc. Distributed data processing system
US4180855A (en) * 1978-04-07 1979-12-25 Gte Automatic Electric Laboratories Incorporated Direct memory access expander unit for use with a microprocessor

Also Published As

Publication number Publication date
EP0034634A1 (en) 1981-09-02
JPS56500907A (OSRAM) 1981-07-02
DE3071430D1 (en) 1986-03-27
WO1981000631A1 (en) 1981-03-05
EP0034634B1 (en) 1986-02-19
EP0034634A4 (en) 1982-02-05
US4348720A (en) 1982-09-07

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Legal Events

Date Code Title Description
MKEX Expiry