NO913707L - Anordning og fremgangsmaate for optimalisering av buss-arbitrering. - Google Patents

Anordning og fremgangsmaate for optimalisering av buss-arbitrering.

Info

Publication number
NO913707L
NO913707L NO91913707A NO913707A NO913707L NO 913707 L NO913707 L NO 913707L NO 91913707 A NO91913707 A NO 91913707A NO 913707 A NO913707 A NO 913707A NO 913707 L NO913707 L NO 913707L
Authority
NO
Norway
Prior art keywords
bus
priority
arbitrary
external devices
master
Prior art date
Application number
NO91913707A
Other languages
English (en)
Other versions
NO913707D0 (no
Inventor
George Bohoslaw Marenin
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of NO913707D0 publication Critical patent/NO913707D0/no
Publication of NO913707L publication Critical patent/NO913707L/no

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
    • G06F13/20—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
    • 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
    • G06F13/30—Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal with 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
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system

Abstract

Anordning og fremgangsmåte for å optimalisere buss- arbitræring l løpet av direkte lageraksess (DMA) dataoverføring over en ikke-dedikert buss mellom et lager og/eller flere eksterne anordninger hvor hver master har en arbitrær prioritet. I det minste to ikke- overlappende klokker (Cl, C2) er anordnet pr. over- førlngssyklus og der er i det minste en overførings- syklus pr. arbitrær syklus. Arbitrærprioritets- anmodningen sendes for hver ekstern anordning (13, 14) til en arbitrær buss (12) kun ved stigning av den første klokken. Ved slutten av den siste klokken blir prioritetskoden til den eksterne anordningen som har høyest prioritet bestemt for å designere den eksterne anordningen som skal bil bussmaster. Adresser og data blir overført mellom den designerte bussmasteren og lageret eller en annen av de eksterne anordningene via den Ikke-dedikerte bussen i løpet av neste syklus etter en for øyeblikket aktiv bussmaster avgir styringen.^ Prioriteten til de eksterne anordningene (13, 14) kan bil endret dynamisk. Arbltrærsyklusene blir parallellutført på en slik måte at det ikke er noe tap av adresse eller dataover- føringssykluser. Den for øyeblikket aktive bussmasteren kan utvide antall sykluser l løpet av hvilke de kommuniserer med en eller flere eksterne anordninger (13, 14). En anordning betegnet som neste i linjen som bussmaster kan bli fortømt under visse betingelser.
NO91913707A 1990-09-21 1991-09-20 Anordning og fremgangsmaate for optimalisering av buss-arbitrering. NO913707L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58634990A 1990-09-21 1990-09-21

Publications (2)

Publication Number Publication Date
NO913707D0 NO913707D0 (no) 1991-09-20
NO913707L true NO913707L (no) 1992-03-23

Family

ID=24345380

Family Applications (1)

Application Number Title Priority Date Filing Date
NO91913707A NO913707L (no) 1990-09-21 1991-09-20 Anordning og fremgangsmaate for optimalisering av buss-arbitrering.

Country Status (18)

Country Link
US (1) US5195185A (no)
EP (1) EP0476990B1 (no)
JP (1) JPH0810445B2 (no)
KR (1) KR950014505B1 (no)
CN (1) CN1037553C (no)
AU (1) AU639589B2 (no)
BR (1) BR9103929A (no)
CA (1) CA2050129C (no)
CZ (1) CZ282214B6 (no)
DE (1) DE69132344T2 (no)
FI (1) FI914429A (no)
HU (1) HU215867B (no)
MX (1) MX173460B (no)
NO (1) NO913707L (no)
PL (1) PL167608B1 (no)
PT (1) PT99006A (no)
RU (1) RU2110838C1 (no)
SG (1) SG42853A1 (no)

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Also Published As

Publication number Publication date
PT99006A (pt) 1993-10-29
EP0476990B1 (en) 2000-08-02
HUT58931A (en) 1992-03-30
EP0476990A2 (en) 1992-03-25
EP0476990A3 (en) 1993-08-04
PL167608B1 (pl) 1995-09-30
CA2050129A1 (en) 1992-03-22
CN1037553C (zh) 1998-02-25
NO913707D0 (no) 1991-09-20
CS287491A3 (en) 1992-04-15
FI914429A0 (fi) 1991-09-20
US5195185A (en) 1993-03-16
MX173460B (es) 1994-03-04
JPH04246758A (ja) 1992-09-02
CN1060166A (zh) 1992-04-08
CA2050129C (en) 1996-05-14
AU639589B2 (en) 1993-07-29
DE69132344D1 (de) 2000-09-07
PL291778A1 (en) 1992-06-01
HU215867B (hu) 1999-03-29
KR920006858A (ko) 1992-04-28
FI914429A (fi) 1992-03-22
DE69132344T2 (de) 2001-02-15
RU2110838C1 (ru) 1998-05-10
KR950014505B1 (ko) 1995-12-02
JPH0810445B2 (ja) 1996-01-31
CZ282214B6 (cs) 1997-06-11
HU913024D0 (en) 1992-01-28
SG42853A1 (en) 1997-10-17
BR9103929A (pt) 1992-05-26
AU8261291A (en) 1992-03-26

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