AMD-K6 datasheet(25/346 Pages) AMD

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Chapter 2

Internal Architecture

20695H/0—March 1998

AMD-K6® Processor Data Sheet

Preliminary Information

Internal Architecture

2.1

Introduction

The AMD-K6 processor implements advanced design techniques

know n as the RISC 86 microarch i t ecture . Th e RISC 8 6

microarchitecture is a decoupled decode/execution design

approach that yields superior sixth-generation performance for

x86-based software. This chapter describes the techniques used

and the functional elements of the RISC86 microarchitecture.

2.2

AMD-K6® Processor Microarchitecture Overview

When discussing processor design, it is important to understand

the term s architectur e , m i croar chitectur e , an d des i g n

implementation. The term architecture refers to the instruction

set and features of a processor that are visible to software

prog ra ms runni n g on the process o r. Th e arch ite c t u re

de termines w hat softwa re the processor can run. The

architecture of the AMD-K6 processor is the industry-standard

x86 instruction set.

The term microarchitecture refers to the design techniques used

in the processor to reach the target cost, performance, and

functionality goals. The AMD-K6 is based on a sophisticated

RISC core known as the Enhanced RISC86 microarchitecture.

The Enhanced RISC86 microarchitecture is an advanced,

second-order decoupled decode/execution design approach that

enables industry-leading performance for x86-based software.

The term design implementation refers to the actual logic and

circuit designs from which the processor is created according to

the microarchitecture specifications.

AMD-K6 Datasheet(PDF) 25 Page - Advanced Micro Devices