Boots – shoes – and leggings
Patent
1985-10-28
1988-07-26
Harkcom, Gary V.
Boots, shoes, and leggings
G06F 1318
Patent
active
047605154
ABSTRACT:
An arbitration apparatus for use within a computer system comprises a plurality of individual arbiters arranged in a particular configuration wherein some individual arbiters are higher in the particular configuration than a specific arbiter and some individual arbiters are lower in the particular configuration than the specific arbiter. Each arbiter has a request terminal for receiving access request signals, requesting access to a shared system bus, and an enable terminal for receiving an enabling signal. The enabling signal is generated and energizes the enable terminal of the specific arbiter if access requests are not received by higher arbiters in the particular configuration relative to the specific arbiter. If an access request signal energizes an arbiter and an enabling signal energizes the arbiter, an access grant signal is developed from the arbiter. If more than one access request signal energizes the arbiter at the same time, a command rotor, connected to the arbiter, determines the priority of access of the request signals to the shared bus in response to the "rotation" of the command rotor. If the access request signal is of a predetermined type, a pre-emptive grant signal may be developed from its arbiter even in the absence of an access request if there are no higher requests and no lower grants. If a refresh request is received by an arbiter when its enabling signal is not received, the refresh request is latched, and a refresh takes place when the enabling signal is finally generated.
REFERENCES:
patent: 3964054 (1976-06-01), Annunziata et al.
patent: 4009470 (1977-02-01), Danilenko et al.
patent: 4091455 (1978-05-01), Woods et al.
patent: 4103329 (1978-07-01), Davis et al.
patent: 4209838 (1980-06-01), Alcorn, Jr. et al.
patent: 4229791 (1980-10-01), Levy et al.
patent: 4417304 (1983-11-01), Dinwiddie, Jr.
patent: 4438489 (1984-03-01), Heinrich et al.
patent: 4449183 (1984-05-01), Flahive et al.
patent: 4463445 (1984-07-01), Grimes
patent: 4470112 (1984-09-01), Dimmick
patent: 4488218 (1984-12-01), Grimes
patent: 4536839 (1985-08-01), Shah et al.
Paper written by W. L. Bain, Jr. and S. R. Ahuja entitled "Performance Analysis of High Speed Digital Buses for Multiprocessing Systems".
Malmquist Carl A.
Wilson John D.
Bouchard John H.
Harkcom Gary V.
International Business Machines - Corporation
Lacasse Randy W.
LandOfFree
Arbitration apparatus for determining priority of access to a sh 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 apparatus for determining priority of access to a sh, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arbitration apparatus for determining priority of access to a sh will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-261668