发明名称 |
MULTIPLE PORT SERVICE EXPANSION ADAPTER FOR A COMMUNICATIONS CONTROLLER |
摘要 |
<p>MULTIPLE PORT SERVICE EXPANSION ADAPTER FOR A COMMUNICATIONS CONTROLLER Bus interconnection between the system busses of a multi-port communications controller and the busses of one or more multi-port adapters is facilitated with a new architecture for providing an interconnection controller. A programmably adjustable adapter and port interface controller is combined via a scannerless communications controller with a bus interconnection control logic that handles both DMA and interrupt mode data transfers for a large number of channels. The invention provides an improved means for transferring data to or from numerous communication channel devices within a processor based communications system in such a manner that the optimum mode of data transfer may be individually programmed for each channel as system environment conditions demand.</p> |
申请公布号 |
CA1251572(A) |
申请公布日期 |
1989.03.21 |
申请号 |
CA19860505399 |
申请日期 |
1986.03.27 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
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分类号 |
G06F13/34 |
主分类号 |
G06F13/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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