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Introduction To 80386 Microprocessor p.pptx
The document provides an overview of the 80386 microprocessor, detailing its introduction in October 1985, the two versions (DX and SX), and their respective features. It highlights key specifications such as a 32-bit address and data bus, memory capabilities, and multitasking support, as well as the internal organization and types of registers. The 80386 architecture includes various units, including bus interface and execution units.
Introduction To 80386 Microprocessor p.pptx
- 1. INTRODUCTION TO 80386 MICROPROCESSOR -Submitted By- Prasenjit Chandrakant More Rajesh Santosh Walke
- 2. INDEX • Introduction to80386 • 80386 DX & SX • Features of 80386 • Internal Organization of 80386 • Registers
- 3. INTRODUCTION • A Componentthat iplements memory. • A Electronic circuit that functions as the CPU of Computer. • October 1985 • Two versions • 80386 DX • 80386 SX
- 4. 80386 DX &SX • October 1985. • 32 Bit Address Bus. • 32 Bit Data Bus. • Packaged in 132 Pin PGA. • Address 4 GB of Memory. • Original 80386 is DX. • 1988 • 24 Bit Address Bus. • 16 Bit Data Bus. • 100 Pin flat Package. • 16 MB of Memory • The Internal Architecture of both DX and SX are same.
- 5. FEATURES OF 80386 •32 Bit Microprocessor. It has 32 bit ALU. • 4 GB of Physical Memory. • 64 TB of Virtual Memory. • Integrated Memory Management Unit. • 32 bit data bus and 32 bit address bus. • It offers a 3 stage pipelining. • Multitasking. • Protection Mechanism. • Hardware Debugging Support.
- 6. INTERNAL ORGANIZATION OF80386 • 80386 Was Organised As Six Stages : • Bus Interface Unit • Instruction Pre-Fetch • Instruction Pre-Decode • Execution Unit • Segmentation Unit • Paging Unit
- 7. ARCHITECTURE OF 80386 Segment Registers Segment Translator Translation Lookaside Buffer Page Translator Prefetch Queue Prefetcher Decoder Instruction Queue Registers Barrel shifter Multiply/Divide ALU Bus Interface Page Unit Prefetch Unit Segment Unit Decode Unit Execution Unit Bus Unit
- 8. REGISTERS OF 80386 •80386 has 32 registers which are grouped to 7 types. • General Purpose Registers. • Index Registers and pointers. • Segment Registers. • Flag Registers. • Control Registers. • Debug Registers. • Test Registers.
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