TM Intel386 DX MICROPROCESSOR 32-BIT CHMOS MICROPROCESSOR WITH INTEGRATED MEMORY MANAGEMENT Y Y Flexible 32-Bit Microprocessor Optimized for System Performance 8, 16, 32-Bit Data Types Pipelined Instruction Execution 8 General Purpose 32-Bit Registers On-Chip Address Translation Caches 20, 25 and 33 MHz Clock Y Very Large Address Space 40, 50 and 66 Megabytes/Sec Bus 4 Gigabyte Physical Bandwidth 64 Terabyte Virtual TM 4 Gigabyte Maximum Segment Size Y Numerics Support via Intel387 DX Math Coprocessor Y Integrated Memory Management Unit Virtual Memory Support Y Complete System Development Optional On-Chip Paging Support 4 Levels of Protection Software: C, PL/M, Assembler Fully Compatible with 80286 System Generation Tools TM Y Debuggers: PSCOPE, ICE -386 Object Code Compatible with All 8086 Family Microprocessors Y High Speed CHMOS IV Technology Y Virtual 8086 Mode Allows Running of Y 132 Pin Grid Array Package 8086 Software in a Protected and Y 132 Pin Plastic Quad Flat Package Paged System (See Packaging Specification, Order 231369) Y Hardware Debugging Support 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. 23163049 TM Intel386 DX Pipelined 32-Bit Microarchitecture TM TM Intel386 DX and Intel387 DX are Trademarks of Intel Corporation. MS-DOS and Windows are Trademarks of MICROSOFT Corporation. *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