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Method and apparatus for allocating computer bus device resources to a priority requester and retrying requests from non-priority requesters
Method and apparatus for allocating computer bus device resources to a priority requester and retrying requests from non-priority requesters
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机译:用于将计算机总线设备资源分配给优先级请求者并重试来自非优先级请求者的请求的方法和装置
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摘要
A target device in a computer bus system allocates resources by selecting a priority requester for allocation of scarce resources. In a non-bus arbiter configuration, the first initiator device to receive a retry response to a transaction request after the resources are exhausted is designated as a priority requester. In a bus arbiter configuration, the priority requester is chosen on a round-robin basis from initiator devices that received a retry response to the initiator's most recent transaction request. If only one resource is available when an initiator sends a transaction request, the initiator receives a retry response unless the initiator is the priority requester.
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