A laboratory for teaching computer networking techniques is described. Each workstation consists of a 68008 /spl mu/P operating under the OS-9 operating system. The workstations are networked via an ARCNET local area network to a common file server. The workstations were initially constructed to teach microprocessors and have been designed so that external components can be interfaced to them via a proprietary bus design using prototyping boards with plug-in wires and components. The computer networking experiments use groups of four workstations connected via their serial interfaces to a simple circuit that simulates a bus. This circuit also detects a collision on the bus caused by more than one station transmitting simultaneously and signals the four workstations via their DCD lines. Two semesters of laboratory experiments have been developed. The first builds MAC layer protocols and the second builds higher layer protocols.
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机译：描述了一种用于教授计算机网络技术的实验室。每个工作站都包含一个在OS-9操作系统下运行的68008 / spl mu / P。工作站通过ARCNET局域网连接到公用文件服务器。工作站最初是为教导微处理器而设计的，其设计使得可以使用带有插入式电线和组件的原型板，通过专有的总线设计将外部组件与其连接。计算机网络实验使用四个工作站组成的组，这些工作站通过其串行接口连接到模拟总线的简单电路。该电路还可以检测到由于多个站同时传输而导致的总线冲突，并通过其DCD线向四个工作站发出信号。已经开发了两个学期的实验室实验。第一个构建MAC层协议，第二个构建高层协议。
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