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专利名称：Multiple port communications adapter
apparatus
发明人：Burrus, Gilbert Stevens, Jr.,Cooper, Ronald
Julius,Marr, Michael Raymond,Marsico, MarioAnthony,Pescatore, John Carmine,Sullivan,Paul Douglas
申请号：EP86107018.3申请日：19860523公开号：EP0205010B1公开日：19930728
摘要：A multi-port communications controller and variable protocol adapter isdescribed. The adapter utilizes a user programmable pluggable programming cartridgefor defining individual communications port data service characteristics. The port dataservice characteristics are interpreted by a microprocessor which manages the
interchange from port to port and to or from memory or a host system. Direct memoryaccess or interrupt driven memory access modes of operation are individually selectablefor each individual in bound and out bound communications channel. The communicationsprotocols employed at each port may be of any standard type with the microprocessorin the adapter making the appropriate conversion. Communication speeds can beautomatically recognized and matched for each port also. An arbitration processor forboth DMA and interrupt driven data transfer services is included as the heart of thecommunications adapter design to provide the capability of individualized control overeach in bound and out bound channel's mode of data transfer service for the optimum
mode of operation for each port and type of data service required.
申请人：INTERNATIONAL BUSINESS MACHINES CORPORATION
地址：OLD ORCHARD ROAD; ARMONK, N.Y. 10504
代理机构：Lattard, Nicole
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