2.1 Memory Organization and Segmentation 内存组织和分段 The physical memory of an 80386 system is organized as a sequence of 8-bit bytes. Each byte is assigned a unique address that ranges from zero to a maximum of 2^(32) -1 (4 gigabytes). 80386系统的物理内存被看做8位…

Intel 80386 Reference Programmer's Manual 80386程序员参考手册 Chapter 1 -- Introduction to the 80386 第1章 - 80386的介绍 The 80386 is an advanced 32-bit microprocessor optimized for multitasking operating systems and designed for applications needing very high p…

注:觉得本章内容与理解操作系统不直接相关,所以本章并未看完,也就没有翻译完,放在这里中是为了保证手册的完整.有兴趣的人可以去原址查看. https://pdos.csail.mit.edu/6.828/2016/readings/i386/c03.htm Chapter 3 Applications Instruction Set 程序指令集 This chapter presents an overview of the instructions which programmers can u…

译注:一些异常没有翻译,因为看书时主要为了理解linux代码,所以代码中没有主要使用的就没有仔细看.这部分内容后期再看时再进行翻译. 9.8 Exception Conditions 异常条件 The following sections describe each of the possible exception conditions in detail. Each description classifies the exception as a fault, trap, or abort…

8.2 I/O Instructions I/O指令 The I/O instructions of the 80386 provide access to the processor's I/O ports for the transfer of data to and from peripheral devices. These instructions have as one operand the address of a port in the I/O address space. T…

6.3.5 Some Instructions are Reserved for Operating System 为操作系统保留的一些指令 Instructions that have the power to affect the protection mechanism or to influence general system performance can only be executed by trusted procedures. The 80386 has two classe…

4.2 Systems Instructions 系统指令 Systems instructions deal with such functions as: 系统指令具有以下功能: Verification of pointer parameters (refer to Chapter 6): 验证指印参数(参见第6章) ARPL> -- Adjust RPL RPL= request provilege level LAR -- Load Access Rights LSL -- Load…

2.6 Interrupts and Exceptions 中断和异常 The 80386 has two mechanisms for interrupting program execution: 80386对中断处理执行有两个机制: Exceptions are synchronous events that are the responses of the CPU to certain conditions detected during the execution of an inst…

从上一次学习MIT的操作系统课程又过去了一年.上次学习并没有坚持下去.想来虽有种种原因,其还在自身无法坚持罢了.故此次再鼓起勇气重新学习,发现课程都已由2014改版为2016了.但大部分内容并没有改变.在这一年多的时间里,也曾学习过其他课程,比如孟宁的Linux内核分析,也看过其他人写的文章.但还是有很多内容无法全部理解,而且从网上文章或讨论中也看出,象我这种似懂非懂的状态很多人都有.比如,在看到linux0.11中的那个TSS结构时就一直在想,为什么要这样设计呀?系统明明没有使用到那么多结构成…

10.2 Software Initialization for Real-Address Mode   实地址模式的软件初始化 In real-address mode a few structures must be initialized before a program can take advantage of all the features available in this mode. 在实地址模式,程序在能利用这个模式下的的所有可用特性之前,新架构必须被初始化. 10.2.1…