TI486 Microprocessor - Al Kossow's Bitsavers

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Chapter 6 Mechanical Specifications Topic Page 6~1Pii1A$slgnmerit$ ...••. ~o' •• oi •• < ••••.• 5.2·· pa~l
Pin Assignments 6.1 Pin Assignments The pin assignments for the TI486SLC/E and TI486SLC/E-V are shown in Figure 6-1. The signal names are shown in Table 6-1 sorted by pin numbers and in Table 6-2 sorted by signal names. Figure 6-1. TI486SLCIE and TI486SLCIE-V Pin Assignments 8~OO~W~VM~~omoo~w~~~~~omoo~w ~mmmmmm~mmmoooooooooooooooooooo~~~~ DO Vss HLDA HOLD Vss NA READY Vee Vee Vee Vss Vss Vss Vss eLK2 ADS BLE A1 BHE SMADS Vee Vss MilO DIG wiR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 0 (TOP VIEW) 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 A20 A19 A18 A17 Vee A16 Vee Vss Vss A15 A14 A13 Vss A12 A11 A10 A9 A8 Vee A7 A6 AS A4 A3 A2 ~~oomo~~~~~w~oomo~~~~~w~oomo NN~~~~~~~~~~~~v~~~~~~vv~~ Ne - No internal connection 6-4 Mechanical Specifications
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.TEXAS INSTRUMENTS TI486 Microproce
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TI486 Microprocessor Reference Guid
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Preface Read This First About This
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About This Manual Appendix D Orderi
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Contents 1 Product Overview .......
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Contents 5.5 AC Characteristics . .
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1-1 TI486SLC/E Functional Block Dia
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Figures 4-27 SUSP Initiated Suspend
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Tables 5-3 Absolute Maximum Ratings
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Product Overview 1-1
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Chapter 1 Product Overview Features
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1.2 Differences Between the TI486SL
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Tl486SLCIE Overview Figure 1-2. TI4
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Tl486DLCIE Overview 1.4 TI486DLC/E
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TI486DLCIE Overview The TI486DLC/E
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Power Management / System Managemen
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Programming Interface 2-1
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Chapter 2 In this chapter, the inte
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Processor Initialization Table 2-1.
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Instruction Set Overview 2.2 Instru
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Register Set 2.3 Register Set There
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Register Set Pointer and Index Regi
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Register Set 2.3.1.2 Segment Regist
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Register Set 2.3.1.3 Instruction Po
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Register Set 2.3.2 System Register
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Register Set 2.3.2.1 Control Regist
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Register Set 2.3.2.2 Descriptor Tab
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Register Set Table 2-6. Segment Des
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Register Set During task switching,
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Register Set The CCRO register (Tab
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Register Set Table 2-9. TI486DLCIE
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Register Set Table 2-12. ARR 1-ARR4
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Register Set 2.3.2.6 Test Registers
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Register Set Table 2-14. TR6 and TR
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Address Spaces 2.4 Address Spaces T
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Address Spaces 2.4.2 Memory Address
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Address Spaces Figure 2-21. Real Mo
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Address Spaces Figure 2-24. Paging
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Interrupts and Exceptions 2.5 Inter
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Interrupts and Exceptions 2.5.3 Int
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Interrupts and Exceptions Table 2-2
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System Management Mode 2.6 System M
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System Management Mode Figure 2-29.
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System Management Mode The new SMM
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System Management Mode During SMM o
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Protection The Current Privilege Le
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Virtual 8086 Mode 2.9 Virtual 8086
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TI486SLC/E Bus Interface 3-1
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Chapter 3 TI486SLC/E Bus Interface
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Overview Table 3-1. TI486SLCIE Sign
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Overview Table 3-2. Terminal Functi
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Overview 3.1.1 Bus Cycle Definition
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Overview Table 3-5 shows the state
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Functional Timing Figure 3-3. Bus A
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Functional Timing 3.2.2.1 Bus Cycle
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Functional Timing Non-Pipelined Wai
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Functional Timing Because of the de
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Functional Timing Pipelined Wait St
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Functional Timing Initiating and Ma
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Functional Timing Figure 3-12. Comp
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Functional Timing Figure 3-13. Inte
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Functional Timing Shutdown Indicati
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Functional Timing Figure 3-17. Pipe
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Functional Timing As shown in Figur
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Functional Timing Figure 3-19. Requ
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Functional Timing Figure 3-21. Requ
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Functional Timing Figure 3-22. 8MI
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Functional Timing HALT Initiated Su
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Functional Timing 3.2.12 Float Figu
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TI486DLC/E Bus Interface 4-1
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Chapter 4 TI486DLC/E Bus Interface
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Overview Table 4-1. TI486DLCIE SIgn
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Overview Table 4-6. Signal States D
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Overview 4.1.2 Power Management 4.1
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Functional Timing 4.2 Functional Ti
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Functional Timing The TI486DLC/E da
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Functional Timing Non-Pipelined Rea
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Functional Timing Initiating and Ma
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Functional Timing Figure 4-8. Faste
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Functional Timing Figure 4-9. Vario
Page 172 and 173: Functional Timing Once a pipelined
Page 174 and 175: Functional Timing 4.2.3 Bus Cycles
Page 176 and 177: Functional Timing Pipelined Cycles
Page 178 and 179: Functional Timing LOCK is activated
Page 180 and 181: Functional Timing 4.2.6 Halt and Sh
Page 182 and 183: Functional Timing Figure 4-17. Pipe
Page 184 and 185: Functional Timing Figure 4-19. Non-
Page 186 and 187: Functional Timing The TI486DLC/E sa
Page 188 and 189: Functional Timing 4.2.9 Hold Acknow
Page 190 and 191: Functional Timing Figure 4-23. Requ
Page 192 and 193: Functional Timing 4.2.10 Coprocesso
Page 194 and 195: Functional Timing 4.2.12 Power Mana
Page 196 and 197: Functional Timing Stopping the Inpu
Page 198 and 199: Electrical Specifications 5-1
Page 200 and 201: Chapter 5 Electrical Specifications
Page 202 and 203: ElectricalConnecnons It is recommen
Page 204 and 205: Recommended Operating Conditions 5.
Page 206 and 207: DC Electrical Characteristics Table
Page 208 and 209: AC Characteristics Figure 5-2. TI48
Page 210 and 211: AC Characteristics Table 5-9. AC Ch
Page 212 and 213: AC Characteristics Table 5-11. AC C
Page 214 and 215: ____ AC Characteristics 5.5.3 RESET
Page 220 and 221: Mechanical Specifications 6-1
Page 224 and 225: Pin Assignments Table 6-1. TI486SLC
Page 226 and 227: Pin Assignments Figure 6-3. TI486DL
Page 228 and 229: Package Dimensions 6.2 Package Dime
Page 230 and 231: Thermal Characteristics 6.3 Thermal
Page 232 and 233: Instruction Set 7-1
Page 234 and 235: Chapter 7 Instruction Set This sect
Page 236 and 237: Instruction Fields 7.2 Instruction
Page 238 and 239: Instruction Fields 7.2.5 reg Field
Page 240 and 241: Instruction Fields Table 7-7. mod r
Page 242 and 243: Instruction Fields 7.2.11 sreg3 Fie
Page 244 and 245: Clock Count Summary 7.4 Clock Count
Page 246 and 247: --- --;.J -L 01 Table 7-17. Instruc
Page 248 and 249: I . ~ -.....J Table 7-17. Instructi
Page 250 and 251: Table 7-17. Instructions, Opcodes,
Page 254 and 255: -....J N (J.) Table 7-17. Instructi
Page 256 and 257: I I i I i Table 7-17. Instructions,
Page 258 and 259: ...... ...... '" Table 7-17. Instru
Page 260 and 261: -....J N co Table 7-17. Instruction
Page 262 and 263: "-.I ~ Table 7-17. Instructions, Op
Page 266 and 267: U Appendix A TI486 SMM Pro rammer's
Page 268 and 269: SMM Implementation A.2 SMM Implemen
Page 270 and 271: Figure A-1. SMM Memory Space Header
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SMM Implementation 6) NMI is the on
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Instruction Summary A.4 Instruction
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Instruction Summary A.4.3 Resume No
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Instruction Summary A.4.6 Save LDTR
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8MI Handler Example A.5 SMI Handler
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8MI Handler Example execute_halt: C
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8MI Handler Example COMMENT A The T
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8MI Handler Example arrl arr2 arr3
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.MODEL SMALL . STACK .386P INCLUDE
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Testing/Debugging SMM Code sgdt COM
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Testing/Debugging SMM Code i*******
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TI486 Power Management Features A.7
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Detection of Tl486 CPU A.9 Detectio
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Detection of SMM Capable Version A.
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i**********************************
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A.11 SMM Feature Comparison SMM Fea
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SMM Instruction Macros COMMENT A Co
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SMM Instruction Macros SMM Instruct
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A.14 Format of Data Used by SVDC/RS
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Altering SMM Code Limits A.1S Alter
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SMM Errata A.16 SMM Errata The foll
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Appendix B TI486 Cache Flush B.1 Ge
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Appendix C TI486 BIOS Modification
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Introduction Some example assembler
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Appendix D Ordering Information 0.1
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~TEXAS INSTRUMENTS Printed in U.S.A
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