Programmable P/C compatible communications card
    1.
    发明授权
    Programmable P/C compatible communications card 失效
    可编程P / C兼容通讯卡

    公开(公告)号:US4807282A

    公开(公告)日:1989-02-21

    申请号:US814436

    申请日:1985-12-30

    CPC分类号: G06F13/387

    摘要: 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.

    摘要翻译: 多协议通信适配器(MPCA)用于将局域网(例如商店计算系统)与通信公路相互连接。 MPCA包括多个协议控制器,每个控制器可操作用于将数据流转换成预定格式。 提供可编程配置寄存器用于选择一个协议控制器。 提供控制接口以将所选择的控制器门控到通信高速公路上。 MPCA作为卡或模块打包。 它耦合到控制局域网的主计算机。 主计算机可以通过改变配置寄存器的内容来实现协议更改。 因此,MPCA可以与预先存在的主计算机一起使用,而不会显着地改变所述计算机的架构和/或编程。