hw/i386.reference/c02.htm

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   4 <TITLE>80386 Programmer's Reference Manual -- Chapter 02</TITLE>
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  13 <P>
  14 <H1>Chapter 2 -- Basic Programming Model</H1>
  15 <P>
  16 This chapter describes the 80386 application programming environment as
  17 seen by assembly language programmers when the processor is executing in
  18 protected mode. The chapter introduces programmers to those features of the
  19 80386 architecture that directly affect the design and implementation of
  20 80386 applications programs. Other chapters discuss 80386 features that
  21 relate to systems programming or to compatibility with other processors of
  22 the 8086 family.
  23 <P>
  24 The basic programming model consists of these aspects:
  25 <UL>
  26 <LI>Memory organization and segmentation
  27 <LI>Data types
  28 <LI>Registers
  29 <LI>Instruction format
  30 <LI>Operand selection
  31 <LI>Interrupts and exceptions
  32 </UL>
  33 Note that input/output is not included as part of the basic programming
  34 model. Systems designers may choose to make I/O instructions available to
  35 applications or may choose to reserve these functions for the operating
  36 system. For this reason, the I/O features of the 80386 are discussed in
  37 <A HREF="pii.htm">Part II</A>.
  38 <P>
  39 This chapter contains a section for each aspect of the architecture that is
  40 normally visible to applications.
  41 <P>
  42 <A HREF="s02_01.htm">2.1  Memory Organization and Segmentation</A><BR>
  43 <A HREF="s02_02.htm">2.2  Data Types</A><BR>
  44 <A HREF="s02_03.htm">2.3  Registers</A><BR>
  45 <A HREF="s02_04.htm">2.4  Instruction Format</A><BR>
  46 <A HREF="s02_05.htm">2.5  Operand Selection</A><BR>
  47 <A HREF="s02_06.htm">2.6  Interrupts and Exceptions</A>
  48 <P>
  49 <HR>
  50 <P>
  51 <B>up:</B> <A HREF="toc.htm">
  52 Table of Contents</A><BR>
  53 <B>prev:</B> <A HREF="s01_03.htm">1.3  Notational Conventions</A><BR>
  54 <B>next:</B> <A HREF="s02_01.htm">2.1  Memory Organization and Segmentation</A>
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