A386DX 查看數據表（PDF） - Intel

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A386DX

32-BIT CHMOS MICROPROCESSOR WITH INTEGRATED MEMORY MANAGEMENT

Intel 

Intel386TM DX MICROPROCESSOR

32-BIT CHMOS MICROPROCESSOR

WITH INTEGRATED MEMORY MANAGEMENT

Y Flexible 32-Bit Microprocessor

8 16 32-Bit Data Types

8 General Purpose 32-Bit Registers

Y Very Large Address Space

4 Gigabyte Physical

64 Terabyte Virtual

4 Gigabyte Maximum Segment Size

Y Integrated Memory Management Unit

Virtual Memory Support

Optional On-Chip Paging

4 Levels of Protection

Fully Compatible with 80286

Y Object Code Compatible with All 8086

Family Microprocessors

Y Virtual 8086 Mode Allows Running of

8086 Software in a Protected and

Paged System

Y Hardware Debugging Support

Y Optimized for System Performance

Pipelined Instruction Execution

On-Chip Address Translation Caches

20 25 and 33 MHz Clock

40 50 and 66 Megabytes Sec Bus

Bandwidth

Y Numerics Support via Intel387TM DX

Math Coprocessor

Y Complete System Development

Support

Software C PL M Assembler

System Generation Tools

Debuggers PSCOPE ICETM-386

Y High Speed CHMOS IV Technology

Y 132 Pin Grid Array Package

Y 132 Pin Plastic Quad Flat Package

(See Packaging Specification Order 231369)

The Intel386 DX Microprocessor is an entry-level 32-bit microprocessor designed for single-user applications

and operating systems such as MS-DOS and Windows The 32-bit registers and data paths support 32-bit

addresses and data types The processor addresses up to four gigabytes of physical memory and 64 terabytes

(2 46) of virtual memory The integrated memory management and protection architecture includes address

translation registers multitasking hardware and a protection mechanism to support operating systems Instruc-

tion pipelining on-chip address translation ensure short average instruction execution times and maximum

system throughput

The Intel386 DX CPU offers new testability and debugging features Testability features include a self-test and

direct access to the page translation cache Four new breakpoint registers provide breakpoint traps on code

execution or data accesses for powerful debugging of even ROM-based systems

Object-code compatibility with all 8086 family members (8086 8088 80186 80188 80286) means the

Intel386 DX offers immediate access to the world’s largest microprocessor software base

Intel386TM DX Pipelined 32-Bit Microarchitecture

Intel386TM DX and Intel387TM DX are Trademarks of Intel Corporation

MS-DOS and Windows are Trademarks of MICROSOFT Corporation

231630 – 49

Other brands and names are the property of their respective owners

Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or

copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make

changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata

COPYRIGHT INTEL CORPORATION 1995

December 1995

Order Number 231630-011

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