公开(公告)号：US5548791A

公开(公告)日：1996-08-20

申请号：US279581

申请日：1994-07-25

申请人： Daniel F. Casper ,  Steven G. Glassen ,  Marten J. Halma ,  Sandra K. Ryan

发明人： Daniel F. Casper ,  Steven G. Glassen ,  Marten J. Halma ,  Sandra K. Ryan

IPC分类号： G06F13/12 ,  G06F13/14

CPC分类号： G06F13/122

摘要： A data processing system includes a host processor and host memory means. The processor interacts with a plurality of peripheral units through an I/O system that includes a plurality of channels, one or more I/O processors (IOP's), and control data in a system area of the host memory means. Each channel has an associated busy bit in a vector, and is provided with a one position queue for dispatching work to the channel. Each queue has a bit in a vector indicating its full or empty status. A very efficient algorithm for the assignment of work for peripherals by the IOP's is provided in a system that provides for multiple paths through multiple channels between the host and a particular peripheral using the busy vector and queue vector.

摘要翻译： 数据处理系统包括主机处理器和主机存储器装置。 处理器通过包括多个信道，一个或多个I / O处理器（IOP）的I / O系统和主机存储器装置的系统区域中的控制数据与多个外围设备进行交互。 每个通道在向量中都有一个相关联的忙位，并且具有一个位置队列，用于将工作调度到通道。 每个队列都有一个向量中的位，表示其全部或空的状态。 在通过忙向量和队列向量提供主机与特定外设之间的多个通道的多个路径的系统中提供了用于由IOP为外围设备分配工作的非常有效的算法。