IT1091633B - Dispositivo per la gestione del l accesso diretto alla memoria di un calcolatore - Google Patents

Dispositivo per la gestione del l accesso diretto alla memoria di un calcolatore

Info

Publication number
IT1091633B
IT1091633B IT69952/77A IT6995277A IT1091633B IT 1091633 B IT1091633 B IT 1091633B IT 69952/77 A IT69952/77 A IT 69952/77A IT 6995277 A IT6995277 A IT 6995277A IT 1091633 B IT1091633 B IT 1091633B
Authority
IT
Italy
Prior art keywords
management
memory
computer
direct access
access
Prior art date
Application number
IT69952/77A
Other languages
English (en)
Original Assignee
Olivetti C Ing E C Spa
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 Olivetti C Ing E C Spa filed Critical Olivetti C Ing E C Spa
Priority to IT69952/77A priority Critical patent/IT1091633B/it
Priority to US05/971,322 priority patent/US4245305A/en
Priority to DE19782855673 priority patent/DE2855673A1/de
Priority to GB7850136A priority patent/GB2011681B/en
Application granted granted Critical
Publication of IT1091633B publication Critical patent/IT1091633B/it

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
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/16—Handling requests for interconnection or transfer for access to memory bus
    • G06F13/18—Handling requests for interconnection or transfer for access to memory bus based on priority control
    • 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
    • G06F13/14—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
    • G06F13/287—Multiplexed DMA

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Bus Control (AREA)
IT69952/77A 1977-12-30 1977-12-30 Dispositivo per la gestione del l accesso diretto alla memoria di un calcolatore IT1091633B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT69952/77A IT1091633B (it) 1977-12-30 1977-12-30 Dispositivo per la gestione del l accesso diretto alla memoria di un calcolatore
US05/971,322 US4245305A (en) 1977-12-30 1978-12-20 Direct memory access control device
DE19782855673 DE2855673A1 (de) 1977-12-30 1978-12-21 Anordnung zur handhabung des direkten zugriffs auf den speicher einer datenverarbeitungsanlage
GB7850136A GB2011681B (en) 1977-12-30 1978-12-28 Arrangement for handling direct access to the momory of a computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69952/77A IT1091633B (it) 1977-12-30 1977-12-30 Dispositivo per la gestione del l accesso diretto alla memoria di un calcolatore

Publications (1)

Publication Number Publication Date
IT1091633B true IT1091633B (it) 1985-07-06

Family

ID=11313161

Family Applications (1)

Application Number Title Priority Date Filing Date
IT69952/77A IT1091633B (it) 1977-12-30 1977-12-30 Dispositivo per la gestione del l accesso diretto alla memoria di un calcolatore

Country Status (4)

Country Link
US (1) US4245305A (it)
DE (1) DE2855673A1 (it)
GB (1) GB2011681B (it)
IT (1) IT1091633B (it)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4400772A (en) * 1980-12-30 1983-08-23 International Memories, Inc. Method and apparatus for direct memory access in a data processing system
DE3119812A1 (de) * 1981-05-19 1982-12-16 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen Elektronischer taxameter
WO1983001135A1 (en) * 1981-09-18 1983-03-31 Rovsing As Christian Multiprocessor computer system
DE3241402A1 (de) * 1982-11-09 1984-05-10 Siemens AG, 1000 Berlin und 8000 München Verfahren zum steuern des datentransfers zwischen einem datensender und einem datenempfaenger ueber einen bus mit hilfe einer am bus angeschlossenen steuereinrichtung
DE3241376A1 (de) * 1982-11-09 1984-05-10 Siemens AG, 1000 Berlin und 8000 München Dma-steuereinrichtung zur uebertragung von daten zwischen einem datensender und einem datenempfaenger
DE3501569C2 (de) * 1984-01-20 1996-07-18 Canon Kk Datenverarbeitungseinrichtung
CA1218161A (en) * 1984-01-23 1987-02-17 Stanley M. Nissen Direct memory access controller
US4773000A (en) * 1984-01-23 1988-09-20 Raytheon Company DMA for digital computer system
US4688166A (en) * 1984-08-03 1987-08-18 Motorola Computer Systems, Inc. Direct memory access controller supporting multiple input/output controllers and memory units
DE3602851A1 (de) * 1986-01-31 1987-08-06 Wulfhard Dipl Phys Schneider Datenverarbeitungssystem mit kurzen antwortzeiten auf aeussere ereignisse
US5018098A (en) * 1987-05-07 1991-05-21 Fujitsu Limited Data transfer controlling apparatus for direct memory access
JPH01293431A (ja) * 1988-05-23 1989-11-27 Toshiba Corp メモリアクセス方式
US5276845A (en) * 1988-08-25 1994-01-04 Yamaha Corporation Apparatus with multiple buses for permitting concurrent access to a first memory by a processor while a DMA transfer is occurring between a second memory and a communications buffer
US4935868A (en) * 1988-11-28 1990-06-19 Ncr Corporation Multiple port bus interface controller with slave bus
FR2687487B1 (fr) * 1992-02-19 1996-12-20 Alcatel Business Systems Systeme de partage de temps d'acces a une memoire partagee entre un processeur et d'autres applications.
US5513374A (en) * 1993-09-27 1996-04-30 Hitachi America, Inc. On-chip interface and DMA controller with interrupt functions for digital signal processor
US5740404A (en) * 1993-09-27 1998-04-14 Hitachi America Limited Digital signal processor with on-chip select decoder and wait state generator
US5826106A (en) * 1995-05-26 1998-10-20 National Semiconductor Corporation High performance multifunction direct memory access (DMA) controller
JP2914261B2 (ja) * 1995-12-20 1999-06-28 富士ゼロックス株式会社 外部記憶制御装置及び外部記憶装置制御方法
GB2309559B (en) * 1996-01-27 2000-01-26 Motorola Israel Ltd Microprocessor and system
US5913075A (en) * 1997-03-25 1999-06-15 International Business Machines Corporation High speed communication between high cycle rate electronic devices using a low cycle rate bus
US6101561A (en) * 1998-02-06 2000-08-08 International Business Machines Corporation System for providing an increase in digital data transmission rate over a parallel bus by converting binary format voltages to encoded analog format currents
CN101006433B (zh) * 2004-08-25 2012-01-11 日本电气株式会社 信息通信装置和程序执行环境控制方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133268A (en) * 1959-03-09 1964-05-12 Teleregister Corp Revisable data storage and rapid answer back system
US3526878A (en) * 1967-03-27 1970-09-01 Burroughs Corp Digital computer system
US3703707A (en) * 1971-04-28 1972-11-21 Burroughs Corp Dual clock memory access control
US4053950A (en) * 1976-04-30 1977-10-11 International Business Machines Corporation Residual status reporting during chained cycle steal input/output operations

Also Published As

Publication number Publication date
GB2011681B (en) 1982-07-07
DE2855673A1 (de) 1979-07-05
DE2855673C2 (it) 1990-04-19
US4245305A (en) 1981-01-13
GB2011681A (en) 1979-07-11

Similar Documents

Publication Publication Date Title
IT1091633B (it) Dispositivo per la gestione del l accesso diretto alla memoria di un calcolatore
DK366679A (da) Skriveapparat
IT1075397B (it) Reattore per metanazione
NO780638L (no) Styrelinefritt system for adkomst/gjenkomst til et undersjoeisk broennhode
IT8049119A0 (it) Scatola per medicinali
BR7903807A (pt) Dispositivo externo de memoria de armatenamento de dados dispositivo externo de memoria de armazenamento de dados
IT1059493B (it) Dispositivo per cambiare l ambiente di lavoro di un calcolatore
AR228432A1 (es) Dispositivo de particion temporal del acceso a una memoria principal
IT8025697A0 (it) Circuito d'accesso a canali d'elaboratore per dispositivi multipli di ingresso-uscita.
IT1076113B (it) Apparecchiatura per l'accesso a linee di comunicazione
IT1104671B (it) Dispositivo memorizzatore di dati
IT1088990B (it) Impianto di calcolatori
PL204927A1 (pl) Urzadzenie do zmniejszania czasu wykonania rozkazu w komputerze wykorzystujacym adresowanie posrednie pamieci operacyjnej
BR7803165A (pt) Unidade interface adaptada para ativar a troca de dados com alta velocidade entre a memoria principal de um processador e uma unidade remota
IT1113054B (it) Memoria olografica perfezionata
IT1109850B (it) Dispositivo per filettare
IT1092499B (it) Dispositivo di memoria a semiconduttore
SE7808929L (sv) Anordning for overvakning av en till en nivaregulator tillford insignals niva
IT1092375B (it) Dispositivo per l'elimenazione del coke
SE7811094L (sv) Dynamiskt mos-minne
IT1067446B (it) Dispositivo per proteggere le informazioni contenute in memoria in un calcolatore numerico
IT1101299B (it) Memoria a bolle ad accesso a conduttori
PL205296A1 (pl) Urzadzenie do usuwania hald
TR20038A (tr) Pestisid bilesim
SE404915B (sv) Anordning for teckning av en flisbox

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961227