公开(公告)号：US4386400A

公开(公告)日：1983-05-31

申请号：US151048

申请日：1980-05-19

申请人： Bernard Cope ,  Kenneth R. Lynch ,  Daniel H. O'Donnell ,  John T. Rodell ,  William W. Turechek ,  Robert M. Unterberger

发明人： Bernard Cope ,  Kenneth R. Lynch ,  Daniel H. O'Donnell ,  John T. Rodell ,  William W. Turechek ,  Robert M. Unterberger

IPC分类号： G06F9/445 ,  G06F9/06

CPC分类号： G06F9/4403

摘要： A central processor through an asynchronous service processor, selectively resets an input/output channel designated in an instruction called Clear Channel that is executed by the central processor. As part of the execution of this instruction, the service processor also communicates a reset signal to the peripheral equipment associated with that channel in case the designated channel is malfunctioning and cannot relay a reset signal normally to the peripheral equipment associated with the designated channel. The reset signal for the peripheral equipment is supplied through a connection between the service processor and particular lines in I/O interface cables of that channel. Programming routines that use the Clear Channel instruction are designed to preserve the integrity of data held by peripheral equipment that is associted with two channels when the peripheral equipment has exclusive affiliations with the designated channel. Other systems that are eligible to communicate with the affiliated equipment are conditioned to a quiescent state before the reset operation is carried out, and are kept in that state until the affiliations are re-established.

摘要翻译： 通过异步服务处理器的中央处理器选择性地复位由中央处理器执行的称为清除通道的指令中指定的输入/输出通道。 作为执行该指令的一部分，服务处理器还在指定的通道发生故障的情况下将复位信号传送到与该通道相关联的外围设备，并且不能将复位信号正常地中继到与指定通道相关联的外围设备。 外围设备的复位信号通过服务处理器和该通道的I / O接口电缆中的特定线路之间的连接来提供。 使用清除通道指令的编程程序被设计为当外围设备与指定通道独占关联时，保留与两个通道相关联的外围设备保持的数据的完整性。 有资格与附属设备进行通信的其他系统在复位操作执行之前处于静止状态，并保持在该状态，直到关联重新建立为止。