Patent
1994-08-08
1997-01-28
Harvey, Jack B.
395729, 395865, G06F 13372
Patent
active
055985424
ABSTRACT:
In a computer system having a central processing unit (CPU) in circuit communication with a memory via a memory bus and having first and second peripheral bus controllers generating first and second dissimilar peripheral buses, a multibus arbiter is provided for arbitrating access of a memory bus between the two dissimilar buses. The multibus arbiter has an assignment register, a time slot pointer, and an arbitration circuit. The length of the assignment register and time slot pointer controls the granularity of control of accesses to the memory bus by the peripheral buses. The assignment register holds a multibit assignment value that determines which of the two peripheral buses will be given access to the memory bus for a given time slot during contention. The time slot pointer selects one of the bits of the assignment register and points to a different bit responsive to both peripheral buses requesting access to the memory bus at the same time and one of said peripheral bus arbiters indicating that the current access of the memory bus is complete.
REFERENCES:
patent: 4334288 (1982-06-01), Bocher
patent: 4339808 (1982-07-01), North
patent: 4473880 (1984-09-01), Budde et al.
patent: 4511959 (1986-10-01), Nicolas et al.
patent: 4620278 (1986-10-01), Ellsworth et al.
patent: 4682285 (1987-07-01), Ozil et al.
patent: 4719567 (1988-01-01), Whittington et al.
patent: 4785394 (1988-11-01), Fischer
patent: 4969120 (1990-11-01), Azevedo et al.
patent: 4977557 (1990-12-01), Phung et al.
patent: 5168568 (1992-12-01), Thayer et al.
patent: 5195185 (1993-03-01), Marenin
patent: 5241632 (1993-08-01), O'Connell et al.
patent: 5416910 (1995-05-01), Moyer et al.
patent: 5440699 (1995-08-01), Sindhu et al.
Grosser George E.
Harvey Jack B.
International Business Machines - Corporation
Myers Paul R.
LandOfFree
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