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4.数据链路协议规范 BIFBUS数据链路是IBM同步数据链路控制(SDLO)标准的一个子集。用SDLC作为BIFBUS数据链路协议的基础,是因为该协议可靠性高,并且已得到承认。BITBUS互连总线并不(也不准备)与SDLO严格兼容。在SDLC基础上,BITBUS数据链路协议以多站(即总线)拓扑的形式,把一个主设备联接到多个从设备上。数据链路协议是专
4. Data Link Protocol Specifications The BIFBUS data link is a subset of the IBM Synchronous Data Link Control (SDLO) standard. The basis for using SDLC as the BIFBUS data link protocol is because the protocol is highly reliable and has been acknowledged. BITBUS interconnect bus is not (nor prepared) strictly compatible with SDLO. Based on the SDLC, the BITBUS data link protocol connects a master to multiple slaves in the form of a multi-station (ie bus) topology. Data Link Protocol is ad hoc