Power and Performance

Chapter 1

Early Intel® Architecture

Abstract

This chapter is the first of three that explores the Intel(R) Architecture, focusing on the fundamental design. The chapter begins with the Intel(R) 8086, the first x86 processor. Then the Intel(R) 8087 coprocessor is covered, along with the IEEE 754 floating point specification and the Intel(R) 80286. The chapter ends by looking at the Intel(R) 80386, the first 32-bit Intel(R) processor and the first processor to run Linux.

Keywords

8086

8087

80286

80386

x87 FPU

x86

Chapter Contents

1.1 Intel® 8086   5

1.1.1 System State   7

Address Space   7

1.1.2 Registers   8

1.1.3 Instructions   10

Data Movement   11

Integer Arithmetic   11

Boolean Logic   12

Flow Control   12

String   12

1.1.4 Machine Code ...