Method and system for simultaneous variable-width bus access in

Details Method and system for simultaneous variable-width bus access in Method and system for simultaneous variable-width bus access in

1997-09-18

1999-06-15

Ray, Gopal C.

395293, G06F 1314, G06F 1300

Patent

active

059130440

ABSTRACT:
A method and system for enhanced bus access in a multiprocessor system having multiprocessors coupled to a system memory via a common wide bus. The common wide bus is subdivided into multiple sub-buses which may be accessed individually or in groups by a selected processor, or individual sub-buses may be accessed by multiple processors simultaneously. In response to one or more pending transactions, each processor outputs a request to bus arbitration logic for a maximum-permitted number of sub-buses. If the number of sub-buses granted to a particular processor equals the number of pending transactions at that processor, all pending transactions are performed in parallel on separate sub-buses. If the number of sub-buses granted is less than the number of pending transactions, pending transactions are performed in a priority order. Finally, if the number of granted sub-buses is greater than the number of pending transactions, selected transactions are performed over multiple sub-buses in parallel, greatly enhancing the speed of those transactions.

REFERENCES:
patent: 4085448 (1978-04-01), Kogge
patent: 4325116 (1982-04-01), Kranz et al.
patent: 4941086 (1990-07-01), Kriz
patent: 5300811 (1994-04-01), Suzuki et al.
patent: 5394528 (1995-02-01), Kobayashi et al.
patent: 5408628 (1995-04-01), Ameti
patent: 5423009 (1995-06-01), Zhu
patent: 5440698 (1995-08-01), Sindhu et al.
patent: 5515507 (1996-05-01), Byers et al.
patent: 5528765 (1996-06-01), Milligan
patent: 5619726 (1997-04-01), Seconi et al.

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