80386DX Datasheet (Intel) - 32-Bit Microprocessor

80386DX, 32-Bit Microprocessor

Table 2 BASE ARCHITECTURE 2 1 Introduction 2 2 Register Overview 2 3 Register Descriptions 2 4 Instruction Set 2 5 Addressing Modes 2 6 Data Types 2 7 Memory Organization 2 8 I O Space 2 9 Interrupts 2 10 Reset and Initialization 2 11 Testability 2 12 Debugging Support 3 REAL MODE ARCHITECTURE 3 1 R

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 Al

80386DX 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