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Now downloading free:VIA Cyrix III

VIA Cyrix III free download

Microprocessor, CPU, PIC schematics and info

File information:
File name:cyr3_smm.pdf
[preview Cyrix III]
Size:102 kB
Extension:pdf
Mfg:VIA
Model:Cyrix III 🔎
Original:
Descr:Application Note 129 Cyrix III CPU SMM Design Guide
Group:Electronics > Components > Integrated circuits > Processor
Uploaded:28-04-2005
User:raymondtau
Multipart:No multipart

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Extracted files:1
File name cyr3_smm.pdf

Application Note 129 Cyrix III CPU SMM Design Guide Cyrix Processors REVISION HISTORY Date 5/19/99 4/9/99 4/8/99 4/6/99 Version 1.0 0.21 0.2 0.1 Revision Updated for Cyrix III bus protocol Typos Removed SMAC, MMAC and SMINT Initial Version C:\documentation\joshua\appnotes\cIII_smm.fm Table of Contents 1.0 1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 3.0 3.1 3.2 3.3 3.4 3.5 3.6 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 Introduction Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Cyrix SMM Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Typical SMM Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 SMM Implementation SMM Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Cyrix and SL SMM Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Configuration Control Registers and SMM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Address regions in Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 System Management Mode Overall Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 SMM Memory Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 SMM Memory Space Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 SMM Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 SMM Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 SL and Cyrix SMM Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 SMM Programming Details Initializing SMM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 SMM Handler Entry State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Maintaining the CPU State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Initializing the SMM Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 I/O Restart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 I/O Port Shadowing and Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 Resume to HLT Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 Exiting the SMI Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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