计算机专业 翻译 关于设备总线控制Device Control via BusesNot all devices are addressed directly by I/O statements but via a bus system. How this is done varies according to the bus and devices used. Rather than going into specific detai

计算机专业 翻译 关于设备总线控制Device Control via BusesNot all devices are addressed directly by I/O statements but via a bus system. How this is done varies according to the bus and devices used. Rather than going into specific detai
计算机专业 翻译 关于设备总线控制
Device Control via Buses
Not all devices are addressed directly by I/O statements but via a bus system. How this is done varies according to the bus and devices used. Rather than going into specific details, I describe the basic differences between the various approaches here.
Not all device classes can be attached to all bus systems. For example, it is possible to connect hard disks and CD writers but not graphic cards to an SCSI interface. However, the latter can be housed in PCI slots.
In contrast, hard disks must be attached to a PCI bus via another interface (typically IDE).
The different bus types are called system and expansion buses (I won’t bother with their technical details).
The differences in hardware implementation are not important for the kernel (and are therefore of no relevance when programming device drivers). Only the way in which the buses and attached peripherals are addressed is relevant.

计算机专业 翻译 关于设备总线控制Device Control via BusesNot all devices are addressed directly by I/O statements but via a bus system. How this is done varies according to the bus and devices used. Rather than going into specific detai
设备控制总线控制
并不是所有的设备直接通过I/O系统进行控制的,有时候需要连接系统总线地址进行访问.至于是怎样控制进行的,是根据不同的总线和设备的具体使用.与其描述具体细节相比,我还是在这里描述一下各种控制方法之间的本质区别比较恰当一些
并不是所有的类型的设备都可以连接到所有的总线系统.例如,它可以将硬盘和CD刻录机连接到控制总线上但是不能直接将图形控制块（就是显卡）连接到一个小型电脑标准介面接口（SCSI 接口）.然而,后者可以将他连接到一种总线标准插槽中（PCI 插槽）.
相比之下,硬盘必须通过另一个接口连接到一个PCI总线上(典型的有IDE接口).
不同的总线类型被称为标准系统总线和扩展总线(我就不在讲他们的技术细节).
在硬件实现的差异并不重要的核心（尤其没有相关的设备驱动程序编程时）.只有在总线和连接的外围设备的地址分配方式上是与其硬件实现起来的差异是相关联的
这个是我自己翻译的,有些还有点白话,你自己在整理一下.我觉得就没有问题了