Documentation for Cyrix Processors
387 NPU
486
5x86
6x86 (M1)
6x86MX (M2)
MII
Other
Cyrix processors documentation directory
387 NPU
Manuals
FasMath 83S87 User's Manual
FasMath 83D87 User's Manual
486
Datasheets
Cyrix Cx486SLC Microprocessor Data Sheet
Cyrix Cx486DLC Microprocessor Data Sheet
5x86
Datasheets
5x86 Microprocessor Data Book
Manuals
5x86 CPU BIOS Writer’s Guide
Other
5th-Gen Design Emphasizes Maximum Performance While Minimizing Transistor Count
Cyrix 5x86 Technical Brief
Thermal Design Considerations For The Cyrix 5x86 Microprocessor
6x86 (M1)
Datasheets
6x86 Microprocessor Data Book
1. Product Overview
2. Programming Interface
3. Bus Interface
4. Electrical Specifications
5. Mechanical Specifications
6. Instruction Set
A. Appendix
Abbreviated Data Book
6x86-P200+ Processor Data Book Addendum
Manuals
6x86 BIOS Writer’s Guide
Application Notes
Application Note 106 - Software Customization for the 6x86 Family
Other
Cyrix 6x86 Processor Technical Brief
Award-winning performance
The Cyrix M1 Architecture
Cyrix 6x86 Thermal Design Considerations
6x86MX (M2)
Datasheets
Cyrix 6x86MX Data Book
1. Product Overview
2. Programming Interface
3. Bus Interface
4. Electrical Specifications
5. Mechanical Specifications
6. Instruction Set
Application Notes
Application Note 103 - 6x86MX BIOS Writer’s Guide
Application Note 113 - 100 MHz Bus Design
Multimedia Instruction Set Extensions for a Sixth-Generation x86 Processor
Other
Cyrix 6x86MX Processor Technical Brief
Cyrix 6x86MX "Born to Run"
MII
Datasheets
Cyrix M II Data Book (complete)
1. Product Overview
2. Programming Interface
3. Bus Interface
4. Electrical Specifications
5. Mechanical Specifications
6. Instruction Set
Cyrix M II Data Book (abbreviated) (alt) (alt2)
Cyrix M II - Electrical Specifications for MII-333, MII-366 2.2V and 2.9V Version Addendum
Cyrix M II - 400 (95/285 MHz) Addendum
Cyrix M II - 433 (100/300 MHz) Addendum
Cyrix M II - Mobile CPU Preliminary Data Sheet
Application Notes
Application Note 107 - MII SMM Design Guide
Application Note 108 - Cyrix Extension to the Multimedia Instruction Set
Application Note 116 - Performance Rating the Cyrix M II-300 Processor
Application Note 118 - MII and MII Mobile BIOS Writer’s Guide (alt)
Application Note 119 - Software Customization for the MII Family
Application Note 122 - MII Thermal Design Considerations
Application Note 140 - Cyrix M II -300 Processor Performance Report
Application Note 141 - Cyrix M II -333 Processor Performance Report
Application Note 142 - Cyrix M II -366 Processor Performance Report
Application Note 143 - Cyrix M II -400 Processor Performance Report
Application Note 144 - Cyrix M II -433 Processor Performance Report
NSTL Reports
NSTL Report - Performance Testing of the Cyrix MII, Intel Celeron, and the AMD CPUs (MII-300)
NSTL Report - Performance Testing of the Cyrix MII, Intel Celeron, and the AMD CPUs (MII-333)
NSTL Report - Performance Testing of the Cyrix MII, Intel Celeron, and the AMD CPUs (MII-366)
NSTL Report - Performance Testing of the Cyrix MII, Intel Celeron, and the AMD CPUs (MII-400)
NSTL Report - Performance Testing of the Cyrix MII, Intel Celeron, and the AMD CPUs (MII-433)
Other
Cyrix M II Processor Technical Brief
Cyrix M II Processor Technical Brief
Product Overview
Cyrix M2 CPU Software Identification
Correct Usage of the Cyrix M II Trademark
Slides
Overview of the Cyrix M2 Microprocessor
Other
Application Notes
Application Note 102 - Pin and Bus Cycle Differences (alt)
Application Note 106 - Software Customization for the 6x86 Family
Application Note 112 - Cyrix CPU Detection Guide
Application Note 124 - Pin and Bus Cycle Differences (6x86, 6x86L, 6x86MX, M II and Mobile M II)
Manuals
Cyrix CPU Detection Guide
Cyrix SMM Programmer's Guide
Slides
Beyond the 6x86MX Processor
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