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本章的目的是: 1 介绍I/O程序设计、中断和异步计算的概念。 2 介绍在实现操作系统时必须理解的基本的计算机结构。 3 介绍在下面各章的许多例子中将要用到的IBM 370系统。
The purpose of this chapter is to: 1 Introduce the concept of I / O programming, interrupts, and asynchronous computation. 2 Describes the basic computer architecture that must be understood when implementing an operating system. 3 Introduces the IBM 370 system to be used in many of the examples in the following chapters.