User Manuals: Cyrix MediaGX x86-compatible processor

Manuals and User Guides for Cyrix MediaGX x86-compatible processor. We have 1 Cyrix MediaGX x86-compatible processor manual available for free PDF download: Data Book

Cyrix MediaGX Data Book

Cyrix MediaGX Data Book (304 pages)

Enhanced Processor

Brand: Cyrix | Category: Computer Hardware | Size: 1 MB

Table of Contents

Table of Contents
5
1 Overview

17
- Architecture
  19
  - Figure 1-1 Internal Block Diagram
    19
  - Floating Point Unit
    20
  - Integer Unit
    20
  - Write-Back Cache Unit
    20
  - Internal Bus Interface Unit
    21
  - Memory Management Unit
    21
- Integrated Functions
  21
  - Graphics Accelerator
    21
  - Display Controller
    22
  - Xpressram™ Memory Subsystem
    22
  - PCI Controller
    22
- System Designs
  23
- Figure 1-2 System Block Diagram
  23
- Figure 1-3 Cx9210 Interface System Diagram
  24
2 Signal Definitions

25
- Figure 2-1 Functional Block Diagram
  25
3 Processor Programming

55
- Core Processor Initialization
  55
- Table 3-1 Initialized Core Register Controls
  56
- Instruction Set Overview
  57
  - Lock Prefix
    57
- Register Sets
  58
- Address Spaces
  81
- Offset, Segment, and Paging Mechanisms
  82
- Offset Mechanism
  83
- Figure 3-3 Offset Address Calculation
  83
- Table 3-18 Memory Addressing Modes
  83
- Descriptors and Segment Mechanisms
  84
- Multitasking and Task State Segments
  93
- Table 3-25 32-Bit Task State Segment (TSS) Table
  94
- Table 3-26 16-Bit Task State Segment (TSS) Table
  95
- Paging Mechanism
  96
- Figure 3-8 Paging Mechanism
  96
- Table 3-27 Directory Table Entry (DTE) and Page Table Entry (PTE)
  97
- Interrupts and Exceptions
  98
  - Interrupts
    98
  - Exceptions
    99
  - Interrupt Vectors
    99
  - Table 3-28 Interrupt Vector Assignments
    100
  - Interrupt and Exception Priorities
    101
  - Table 3-29 Interrupt and Exception Priorities
    101
  - Exceptions in Real Mode
    102
  - Error Codes
    102
  - Table 3-30 Exception Changes in Real Mode
    102
  - Table 3-31 Error Codes
    102
  - Table 3-32 Error Code Bit Definitions
    102
- System Management Mode
  103
  - Figure 3-9 System Management Memory Address Space
    103
  - Figure 3-10 SMM Execution Flow
    104
  - SMM Enhancements
    104
  - SMM Operation
    104
  - Table 3-33 SMI# and SMINT Recognition Requirements
    104
  - SMM Configuration Registers
    105
  - The SMI# Pin
    105
  - SMM Memory Space Header
    106
  - Table 3-34 SMM Memory Space Header
    106
  - Table 3-35 SMM Memory Space Header Description
    107
  - SMM Instructions
    108
  - Table 3-36 SMM Instruction Set
    108
  - SMI Generation
    109
  - SMM Memory Space
    109
  - SMI Service Routine Execution
    110
  - Figure 3-11 SMI Nesting State Machine
    111
  - Figure 3-12 SMM and Suspend Mode State Diagram
    112
- Shutdown and Halt
  113
- Protection
  113
- Virtual 8086 Mode
  116
  - Memory Addressing
    116
  - Protection
    116
  - Interrupt Handling
    116
  - Entering and Leaving Virtual 8086 Mode
    116
- Floating Point Unit Operations
  117
  - FPU (Floating Point Unit) Register Set
    117
  - FPU Tag Word Register
    117
  - FPU Status Register
    117
  - FPU Mode Control Register
    117
  - Table 3-38 FPU Registers
    118
4 Integrated Functions

119
- Figure 4-1 Internal Block Diagram
  119
5 Virtual Subsystem Architecture

205
- Virtual VGA
  206
  - Traditional VGA Hardware
    206
  - Table 5-1 Standard VGA Modes
    207
- Mediagx™ Virtual VGA
  209
  - Datapath Elements
    209
  - Video Refresh
    210
  - Mediagx VGA Hardware
    211
  - Table 5-2 VGA Configuration Registers Summary
    212
  - Table 5-3 VGA Configuration Registers
    213
  - VGA Video BIOS
    215
  - Virtual VGA Register Descriptions
    215
  - Table 5-4 Virtual VGA Register Summary
    215
  - Table 5-5 Virtual VGA Registers
    216
6 Power Management

217
7 Electrical Specifications

229
8 Package Specifications

243
9 Instruction Set

249
Appendix A Support Documentation

291
- Order Information
  291
- Data Book Revision History
  292

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