Electrical computers and digital data processing systems: input/ – Intrasystem connection – Protocol
Patent
1997-09-19
2000-01-18
Sheikh, Ayaz R.
Electrical computers and digital data processing systems: input/
Intrasystem connection
Protocol
710126, 710128, 710129, 710 40, G06F 1300
Patent
active
06016526&
ABSTRACT:
A method and apparatus for ordering operations and data received by a first bus having a first ordering policy according to a second ordering policy which is different from the first ordering policy, and for transferring the ordered data to the second bus having the second ordering policy. The apparatus includes at least one first unit for a first class of operations, each first unit being assigned to a single first class operations at a time. The apparatus also includes at least one second unit for a second class of operations, each second unit being assigned to a single second class operation at time. The apparatus also includes intra prioritizing circuitry, for each class of operations, for prioritizing the assigned operations according to the second ordering policy exclusive of the operations stored in the other classes. The system also includes a tainted unit, for each one of the first and second units, for determining which one of the prioritized operations, residing in either the first or second units, can proceed to execution according to the second ordering policy.
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Arimilli Ravi Kumar
Williams Derek Edward
Etienne Ario
Henkler Richard A.
International Business Machines - Corporation
McBurney Mark E.
Sheikh Ayaz R.
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