Arbitration scheme for a multiported shared functional device fo

Details Arbitration scheme for a multiported shared functional device fo Arbitration scheme for a multiported shared functional device fo

1981-10-13

1984-05-15

Thomas, James D.

Boots, shoes, and leggings

G06F 1300

Patent

active

044491832

ABSTRACT:
An arbitration network for use in a data multiprocessing system that includes a functional unit, such as a memory module, that is shared by several requestor devices, such as data processors, wherein access is granted to the shared functional unit through a common data bus on a rotating priority basis and wherein the arbitration cycle of the functional unit for determining priorities of the requestor devices is performed near the end of each operational cycle of the functional unit so that the next requestor device initiates its operational cycle immediately succeeding a current operational cycle then transacting thereby to minimize idle bus periods which would otherwise occur during arbitration cycle sequencing. When the bus is idle and only one request for access is made, the arbitration network foregoes the complete arbitration cycle and issues the grant to the requesting device thereby providing an earlier initiation of the data transfer cycle of the functional unit.

REFERENCES:
patent: 3710324 (1973-01-01), Cohen et al.
patent: 3810114 (1974-05-01), Yamada
patent: 3848234 (1974-11-01), MacDonald
patent: 3999163 (1976-12-01), Levy
patent: 4005391 (1977-01-01), MacPherson
patent: 4009470 (1977-02-01), Danilenko
patent: 4040028 (1977-08-01), Pauker et al.
patent: 4056847 (1977-11-01), Marcantonio
patent: 4059851 (1977-11-01), Nutter
patent: 4090239 (1978-05-01), Twibell
patent: 4096571 (1978-06-01), Mey
patent: 4096591 (1978-06-01), Vander Mey
patent: 4106108 (1978-08-01), Cislaghi
patent: 4112513 (1978-09-01), Elsner
patent: 4121285 (1978-10-01), Chen
IEEE Transactions on Computers, vol. C-21, No. 1, Jan. 1972, "Asynchronous Arbiters", pp. 37-42 by William W. Plummer.
IEEE Transactions on Computers, Sep. 1975, "Asynchronous Arbiter Module" by R. C. Pearce et al., pp. 931-932.
Computer Design, Aug. 1977, "An Asynchronous Arbiter Resolves Resource Allocation Conflicts on a Random Priority Basis" by K. Hojberg, pp. 120-123.
Computer Design, Apr. 1978, "One Step Programmable Arbiters for Multiprocessors" by K. Hojberg, pp. 154-158.

Affiliated with

Also associated with

Rating

Arbitration scheme for a multiported shared functional device fo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arbitration scheme for a multiported shared functional device fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arbitration scheme for a multiported shared functional device fo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-848563