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…

10.3 Switching to Protected Mode  切换到保护模式 Setting the PE bit of the MSW in CR0 causes the 80386 to begin executing in protected mode. The current privilege level (CPL) starts at zero. The segment registers continue to point to the same linear address…

1.1.2 Part II -- Systems Programming 系统编程 This part presents those aspects of the architecture that are customarily used by programmers who write operating systems, device drivers, debuggers, and other software that supports applications programs in…

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…

Chapter 9 Exceptions and Interrupts 第9章 异常和中断 Interrupts and exceptions are special kinds of control transfer; they work somewhat like unprogrammed CALLs. They alter the normal program flow to handle external events or to report errors or exceptional…

4.1 Systems Registers 系统寄存器 The registers designed for use by systems programmers fall into these classes: 为系统程序设计的寄存器分为如下几类: EFLAGS 标志寄存器FLAGS Memory-Management Registers 内存管理寄存器 Control Registers 控制寄存器 Debug Registers 调试寄存器 Test Registers 测试寄存器 4.1…

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…

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…

Chapter 2 -- Basic Programming Model: 基本的程序模式 Introduces the models of memory organization. Defines the data types. Presents the register set used by applications. Introduces the stack. Explains string operations. Defines the parts of an instruction.…

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…