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RSS订阅原创 Part 2 Processor and Memory
<br />Part 2<br />Processor and Memory<br />The processor and memory, together with the support chips, are usually the main components<br />of the motherboard. It is these components that make up the actual computer. Important units<br />such as hard disk
2010-10-02 09:46:00
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原创 Part 2 Processor and Memory
<br />Part 2<br />Processor and Memory<br />The processor and memory, together with the support chips, are usually the main components<br />of the motherboard. It is these components that make up the actual computer. Important units<br />such as hard disk
2010-10-02 09:46:00
352
原创 PART II SYSTEMS PROGRAMMING
<br />PART II SYSTEMS PROGRAMMING<br />Chapter 4 Systems Architecture<br />────────────────────────────────────────────────────────────────────────────<br />Many of the architectural features of the 80386 are used only by systems<br />programmers. This cha
2010-09-28 07:16:00
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原创 Chapter 14 80386 Real-Address Mode
<br />我现在不明白的一个问题就是 什么是系统硬件做的 什么是系统软件做的。<br />Chapter 14 80386 Real-Address Mode<br />────────────────────────────────────────────────────────────────────────────<br />The real-address mode of the 80386 executes object code designed for<br />execution on 8
2010-09-22 13:56:00
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原创 segment register
<br />2.3.2 Segment Registers<br />The segment registers of the 80386 give systems software designers the<br />flexibility to choose among various models of memory organization.<br />Implementation of memory models is the subject of Part II ── Systems<br /
2010-09-17 05:22:00
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原创 继续。。
<br />2.1.1 The "Flat" Model<br />In a "flat" model of memory organization, the applications programmer sees<br />a single array of up to 232 bytes (4 gigabytes). While the physical<br />memory can contain up to 4 gigabytes, it is usually much smaller; the
2010-09-16 00:49:00
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原创 2.1 Memory Organization and Segmentation
<br />The physical memory of an 80386 system is organized as a sequence of 8-bit<br />bytes. Each byte is assigned a unique address that ranges from zero to a<br />maximum of 232-1 (4 gigabytes).<br />80386 programs, however, are independent of the physica
2010-09-15 23:37:00
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原创 Chapter 2 Basic Programming Model
<br />Chapter 2 Basic Programming Model<br />────────────────────────────────────────────────────────────────────────────<br />This chapter describes the 80386 application programming environment as<br />seen by assembly language programmers when the proce
2010-09-15 22:49:00
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翻译 2.1.2 System Segments, Segment Descriptors, and Gates
<br />Besides code, data, and stack segments that make up the execution environment of<br />a program or procedure, the architecture defines two system segments: the taskstate<br />segment (TSS) and the LDT. The GDT is not considered a segment because it i
2010-09-14 10:24:00
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原创 2.1.1 gdt and ldt
上面的图看的的迷迷糊糊的。。。。=。=~！先不管了 往下看再说 呵呵When operating in protected mode, all memory accesses pass through either theglobal descriptor table (GDT) or an optional local descriptor table (LDT) as shown inFigure 2-1. These tables contain entries called segment desc
2010-09-13 23:15:00
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原创 chapter 2 SYSTEM ARCHITECTURE OVERVIEW (2)
<br />System-level architecture consists of a set of registers, data structures, and instructions<br />designed to support basic system-level operations such as memory management,<br />interrupt and exception handling, task management, and control of multi
2010-09-13 22:15:00
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翻译 chapter 2 SYSTEM ARCHITECTURE OVERVIEW
<br />IA-32 architecture (beginning with the Intel386 processor family) provides extensive<br />support for operating-system and system-development software. This support offers<br />multiple modes of operation, which include:<br />ia-32框架（由intel386开始的处理器系
2010-09-13 18:45:00
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原创 using segments
<br />3.2 using segment<br />The segmentation mechanism supported by the IA-32 architecture can be used to<br />implement a wide variety of system designs. These designs range from flat models<br />that make only minimal use of segmentation to protect prog
2010-09-13 12:59:00
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原创 paging
<br />If paging is not used, the linear address space of the processor is mapped directly<br />into the physical address space of processor. The physical address space is defined as<br />the range of addresses that the processor can generate on its address
2010-09-12 23:51:00
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原创 overview basic execution environment(ia_32)
adress space:每个运行在ia-32处理器结构下的任务和应用程序control registers:the five control registers(CR0-CR5)(不是６个吗)determine the operating mode of the processor and the characteristics of the currently executing task
2008-05-09 21:41:00
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原创 BASIC EXECUTION ENVIRONMENT基本执行环境(from ia_32 manual 3chapter)
This chapter describes the basic execution environment of an IA-32 processor as seen by assembly-language programmers. It describes how the processor executes instructions an
2008-05-08 07:56:00
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