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2 Overview Chapter 1

AMD Duron™ Processor Data Sheet 23802E—September 2000

Preliminary Information

AMD system bus. The AMD system bus combines the latest

technological advances, such as point-to-point topology,

source-synchronous packet-based transfers, and low-voltage

signaling, to provide the most powerful, scalable bus available

for any x86 processor.

The AMD Duron processor is binary-compatible with existing

x86 software and backwards compatible with applications

optimized for MMX™ and 3DNow! instructions. Using a data

format and single-instruction multiple-data (SIMD) operations

based on the MMX instruction model, the AMD Duron

processor can produce as many as four, 32-bit, single-precision

floating-point results per clock cycle. The enhanced 3DNow!

technology implemented in the AMD Duron processor includes

new integer multimedia instructions and software-directed

data movement instructions to deliver a superior performance

to Celeron in multimedia and number-intensive applications.

1.1 AMD Duron™ Processor Microarchitecture Summary

The following features summarize the AMD Duron processor

microarchitecture:

■ The industry’s first nine-issue, superpipelined, superscalar

x86 processor microarchitecture designed for high clock

frequencies

■ Multiple x86 instruction decoders

■ Three out-of-order, superscalar, fully pipelined

floating-point execution units, which execute all x87

(floating-point), MMX and 3DNow! instructions

■ Three out-of-order, superscalar, pipelined integer units

■ Three out-of-order, superscalar, pipelined address

calculation units

■ 72-entry instruction control unit

■ Advanced dynamic branch prediction

■ Enhanced 3DNow! technology with new instructions to

enable improved integer math calculations for speech or

video encoding and improved data movement for internet

plug-ins and other streaming applications

■ 200-MHz AMD system bus (scalable beyond 400 MHz)

enabling leading-edge system bandwidth for data

movement-intensive applications

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AMD Duron Bedienungsanleitung Seite 14