论文部分内容阅读
据《EDN》1985年30卷15期报道:PMC-1600 16通道X.25分组装/拆装置适合用于通道集中器、集线控制器或可编程网络交换机。当用PAD作为通道控制器时,每个通道能自动地置配本身呼叫设备规约(异步,同步HDLC或X.25),所有输入的数据流被集中到高速的X.25数据流中。当用PAD作为集线控制器时,它能实现16部个人计算机或工作站的LAN功能;两条高速的X.25通道可把网络链接到主机和其他网络上。这种PAD装置使用7部68000μP并行操作。在PAD中的固件程序能处理规约变换和路由逻辑,它们对主机和工作站提供的输入均是透明的。人们可把7×12×17英寸的操纵台封装在标准的19英寸的框架上。该机由Wolfdata公司研制,每台售价3500美元到5170美元。
According to EDN, Volume 30, Number 15, 1985, the PMC-1600 16-Channel X.25 Splitter / Disassembler is suitable for use with channel concentrators, hub controllers, or programmable network switches. When PAD is used as a channel controller, each channel can be automatically configured with its own calling device protocol (asynchronous, synchronous HDLC or X.25) and all incoming data streams are concentrated into a high-speed X.25 data stream. When using the PAD as a hub controller, it enables LAN functionality on up to 16 personal computers or workstations; two high-speed X.25 channels link the network to hosts and other networks. This PAD unit uses seven 68000μP parallel operations. Firmware in PAD handles both protocol transformation and routing logic, which is transparent to the inputs provided by both the host and the workstation. People can be 7 × 12 × 17-inch console packaged in a standard 19-inch frame. The aircraft developed by the Wolfdata company, each priced from 3,500 US dollars to 51,70 US dollars.