1989.0307 Intel Collection Reference

386DX 32-Bit Microprocessor -- An original specification page --

Summary Transcription:

The 386DX Microprocessor is an advanced 32-bit microprocessor designed for applications needing very high performance and optimized for multitasking systems. 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 transition registers, advanced multitasking, hardware and a protection mechanism to support operating systems. In addition, the 386DX Microprocessor allows the simultaneous running of multiple operating systems. Instruction pipelining, on-chip address transition, and high bus bandwidth ensure short average instruction times and high throughput.

The 386DX Microprocessor 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 (8088, 80186, 80188, 80286) means the 386DX Microprocessor offers immediate access to the world's largest microprocessor software base.
Copyright 1989 Intel

Intel 386DX Microprocessor

386DX block diagram - a closer look

National Museum of American History

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