公开(公告)号：US5276814A

公开(公告)日：1994-01-04

申请号：US351181

申请日：1989-05-10

申请人： Donall G. Bourke ,  Douglas R. Chisholm ,  Gregory D. Float ,  Richard A. Kelley ,  Roy Y. Liu ,  Carl A. Malmquist ,  John M. Nelson ,  Charles B. Perkins, Jr. ,  Richard L. Place ,  Hartmut R. Schwermer ,  John D. Wilson

发明人： Donall G. Bourke ,  Douglas R. Chisholm ,  Gregory D. Float ,  Richard A. Kelley ,  Roy Y. Liu ,  Carl A. Malmquist ,  John M. Nelson ,  Charles B. Perkins, Jr. ,  Richard L. Place ,  Hartmut R. Schwermer ,  John D. Wilson

IPC分类号： G06F13/36 ,  G06F13/40 ,  G06F13/38 ,  G06F13/10

CPC分类号： G06F13/405

摘要： In a data processing system, an input output bus unit (IOBU) is connected one end of an input output interface controller (IOIC) via an asynchronous bus. The other end of the IOIC is connected to a storage controller (SC) and an input output interface unit (IOIU) via a synchronous bus. The SC and IOIU are connected to a memory unit and an instruction processing unit. The asynchronous bus, which is comprised of three sub-buses and a control bus, conducts signals between the IOIC and an IOBU in an asynchronous handshaking manner. The synchronous bus, which is comprised of two sub-buses and a control bus, conducts signals between the IOIC and the SC/IOIU in an synchronous manner. The IOIC, interconnected between the synchronous bus and asynchronous bus, functions as a buffer between the faster synchronous bus and the slower asynchronous bus. Various operations are performed between an IOBU and the memory unit via the asynchronous bus, IOIC, synchronous bus, message acceptance operation.

摘要翻译： 在数据处理系统中，输入输出总线单元（IOBU）通过异步总线连接在输入输出接口控制器（IOIC）的一端。 IOIC的另一端通过同步总线连接到存储控制器（SC）和输入输出接口单元（IOIU）。 SC和IOIU连接到存储器单元和指令处理单元。 由三个子总线和控制总线组成的异步总线以异步握手的方式在IOIC和IOBU之间进行信号传输。 由两个子总线和控制总线组成的同步总线以同步方式在IOIC和SC / IOIU之间传输信号。 在同步总线和异步总线之间互连的IOIC作为较快的同步总线和较慢的异步总线之间的缓冲器。 通过异步总线，IOIC，同步总线，消息接收操作在IOBU和存储器单元之间执行各种操作。