Programmable P/C compatible communications card
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United States of America Patent
Stats
-
Feb 21, 1989
Grant Date -
N/A
app pub date -
Dec 30, 1985
filing date -
Dec 30, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multi-protocol communications adapter (MPCA) is used to interconnect a Local Area Network (such as a store computing system) to a communications highway. The MPCA includes a plurality of protocol controllers, each one of the controllers being operable for converting a data stream into a predetermined format. A programmable configuration register is provided for selecting one of the protocol controllers. A controlled interface is provided for gating the selected controller onto the communications highway. The MPCA is packaged as a card or module. It is coupled to a primary computer that controls the Local Area Network. The primary computer may effectuate a protocol change by changing the contents of the configuration register. Thus, the MPCA can be used with a pre-existing primary computer without significantly changing the architecture and/or programming of said computer.
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