MIPS R10000 Microprocessor User's Manual - SGI TechPubs Library

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182 Chapter 9. Errata SysAD(63:0) Bus Processor in Master State Processor in Slave State Correctable Error Detected Uncorrectable Error Detected The 64-bit wide system address/data bus, SysAD(63:0), is protected by an 8-bitwide ECC. Whenever the processor is in master state and it asserts SysVal* to indicate it is driving valid information on the SysAD(63:0) bus, it also drives the proper ECC on the SysADChk(7:0) bus. Whenever the processor is in slave state, error checking is enabled with the assertion of SysCmd(0), and an external agent asserts SysVal* to indicate it is driving valid information on the SysAD(63:0) bus, the processor checks the SysADChk(7:0) bus for the proper ECC. If a correctable error is detected during an external address cycle, or during an external data cycle for a processor read or upgrade request originated by the R10000 processor, correction is automatically performed in-line without affecting latency. The processor asserts SysCorErr* for one SysClk cycle to inform the external agent that a correctable error has been detected and corrected. If an uncorrectable error is detected during an external address cycle, the processor ignores the SysCmd(11:0) and SysAD(63:0) buses for one SysClk cycle, and the System interface unit posts a Cache Error exception and sets the SA bit in the local CacheErr register. Additionally, the processor informs the external agent by asserting SysUncErr* for one SysClk cycle. Caution: By ignoring the SysCmd(11:0) and SysAD(63:0) buses, this processor may become unsynchronized with other processors or the external agent on the cluster bus. If an uncorrectable error is detected or the data quality indication on SysCmd(5) is asserted during an external data cycle for a processor read or upgrade request originated by the processor, the R10000 asserts the corresponding incoming buffer uncorrectable error flag. When the processor forwards block data from an incoming buffer entry after receiving an external ACK completion response, the associated incoming buffer uncorrectable error flags are checked, and if any are asserted, the System interface unit posts a single Cache Error exception and initializes the EE, D, and SIdx fields in the local CacheErr register. Version 2.0 of January 29, 1997 MIPS R10000 Microprocessor User's Manual
Error Protection and Handling 183 When the processor forwards double/single/partial-word data from an incoming buffer entry after receiving an external ACK completion response, the associated incoming buffer uncorrectable error flag is checked and, if asserted, the System interface unit posts a Bus Error exception. Table 9-8 presents the ECC matrix for the System interface address/data bus. This ECC matrix is identical to that used by the R4X00 System interface. Table 9-8 ECC Matrix for System Interface Address/Data Bus Check Bit 43 52 70 61 Data Bit 6666 55 5555 55 5544 4444 4444 3333 3333 3322 2222 2222 1111 1111 11 3210 98 7654 32 1098 7654 3210 9876 5432 1098 7654 3210 9876 5432 10 9876 54 3210 27 1111 1100 1100 1000 1000 0000 1111 1111 0000 1000 1000 1000 1000 0000 1010 0100 1000 1000 27 1111 1000 1000 1000 0100 0000 0000 0000 1111 0100 0100 0100 0100 1111 1100 1100 1010 0100 27 0000 1000 1100 1010 0010 1111 1111 0000 0000 0010 0010 0010 0010 1111 1000 1000 1100 0010 Number of ones 27 0000 1010 0100 1100 0001 1111 0000 1111 1111 0001 0001 0001 0001 0000 1000 1100 1000 0001 per row 27 1000 0101 0011 0100 0000 1000 1000 1000 1000 1111 1111 0000 1111 1000 1100 0001 0100 0000 27 0100 1100 0010 0101 1111 0100 0100 0100 0100 0000 0000 1111 1111 0100 0100 0011 0100 0000 27 0010 0100 0011 1100 1111 0010 0010 0010 0010 1111 0000 0000 0000 0010 0100 0010 0101 1111 27 0001 0100 0001 0100 0000 0001 0001 0001 0001 0000 1111 1111 0000 0001 0101 0011 1100 1111 Number of ones per 3333 5511 3333 5511 3333 3333 3333 3333 3333 3333 3333 3333 3333 3333 5511 3333 5511 3333 column MIPS R10000 Microprocessor User's Manual Version 2.0 of January 29, 1997
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MIPS R10000 Microprocessor User’s
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Acknowledgments This book represent
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About This Manual Glossary Stylisti
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Table of Contents vii Contents Ackn
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Table of Contents ix Superscalar In
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Table of Contents xi 3 Interface Si
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Table of Contents xiii 5 Secondary
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Table of Contents xv SysAD[63:0] Ad
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Table of Contents xvii 7 Clock Sign
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Table of Contents xix 9 Error Prote
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Table of Contents xxi 11 JTAG Inter
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Table of Contents xxiii 13 Packagin
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Table of Contents xxv Branch on Cop
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Table of Contents xxvii 16 Memory M
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Table of Contents xxix 18 A Cache T
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1. Introduction to the R10000 Proce
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Introduction to the R10000 Processo
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2. System Configurations The R10000
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System Configurations 35 2.2 Multip
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3. Interface Signal Descriptions Th
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Interface Signal Descriptions 39 3.
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4. Cache Organization and Coherency
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Cache Organization and Coherency 47
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5. Secondary Cache Interface The pr
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Secondary Cache Interface 61 5.2 Se
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Secondary Cache Interface 63 Indexi
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Secondary Cache Interface 65 Errata
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Secondary Cache Interface 67 SCTag(
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Secondary Cache Interface 69 4-Word
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Secondary Cache Interface 71 16 or
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Secondary Cache Interface 73 5.7 Wr
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Secondary Cache Interface 75 8-Word
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Secondary Cache Interface 77 Tag Wr
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6. System Interface Operations The
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System Interface Operations 81 6.4
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System Interface Operations 85 Mult
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System Interface Operations 87 Exte
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System Interface Operations 91 Outg
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System Interface Operations 97 Duri
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System Interface Operations 99 Erra
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System Interface Operations 101 Cyc
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System Interface Operations 103 Sys
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System Interface Operations 111 Mul
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System Interface Operations 113 Err
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System Interface Operations 115 Pro
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System Interface Operations 117 Err
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System Interface Operations 127 Ext
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System Interface Operations 129 Ext
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Page 167 and 168: System Interface Operations 137 Pro
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Page 171 and 172: System Interface Operations 141 6.1
Page 173 and 174: System Interface Operations 143 Coh
Page 175 and 176: System Interface Operations 145 Err
Page 177 and 178: System Interface Operations 147 The
Page 179 and 180: System Interface Operations 149 In
Page 181 and 182: System Interface Operations 151 Cyc
Page 183 and 184: System Interface Operations 153 6.2
Page 185 and 186: 7. Clock Signals The R10000 process
Page 187 and 188: Clock Signals 157 7.2 Secondary Cac
Page 189 and 190: 8. Initialization This section desc
Page 191 and 192: Initialization 161 Errata Vcc VccQ[
Page 193 and 194: Initialization 163 8.4 Soft Reset S
Page 195 and 196: Initialization 165 Table 8-1 (cont.
Page 197 and 198: 9. Error Protection and Handling Th
Page 199 and 200: Error Protection and Handling 169 9
Page 207 and 208: Error Protection and Handling 177 D
Page 209 and 210: Error Protection and Handling 179 T
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Page 217 and 218: 10. CACHE Instructions This chapter
Page 219 and 220: CACHE Instructions 189 TLB Refill a
Page 221 and 222: CACHE Instructions 191 Op Field Enc
Page 223 and 224: CACHE Instructions 193 10.4 Index W
Page 225 and 226: CACHE Instructions 195 10.7 Index L
Page 227 and 228: CACHE Instructions 197 10.11 Hit In
Page 229 and 230: CACHE Instructions 199 10.15 Hit Wr
Page 231 and 232: CACHE Instructions 201 10.17 Index
Page 233 and 234: 11. JTAG Interface Operation Errata
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Page 237 and 238: JTAG Interface Operation 207 ‡ Wi
Page 239 and 240: 12. Electrical Specifications This
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Page 243 and 244: Electrical Specifications 213 Unuse
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Page 249 and 250: 13. Packaging The R10000 microproce
Page 251 and 252: Packaging 221 Electrical Characteri
Page 253 and 254: Packaging 223 Figure 13-1 R10000 59
Page 255 and 256: Packaging 225 Table 13-3 (cont.) Si
Page 261 and 262: Packaging 231 Figure 13-3 599LGA PW
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Packaging 233 Figure 13-5 599LGA Bo
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14. Coprocessor 0 This chapter desc
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Coprocessor 0 237 14.1 Index Regist
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Coprocessor 0 239 14.3 EntryLo0 (2)
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Coprocessor 0 241 14.4 Context (4)
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Coprocessor 0 243 14.6 Wired Regist
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Coprocessor 0 245 14.9 EntryHi Regi
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Coprocessor 0 247 CU2 CU2 CU1 CU1 C
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Coprocessor 0 249 Diagnostic Status
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Coprocessor 0 251 Coprocessor Acces
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Coprocessor 0 253 Table 14-13 Cause
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Coprocessor 0 255 14.13 Processor R
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Coprocessor 0 257 14.15 Load Linked
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Coprocessor 0 259 14.17 XContext Re
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Coprocessor 0 261 14.19 Diagnostic
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Coprocessor 0 263 Errata There are
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Coprocessor 0 265 Errata Errata The
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Coprocessor 0 267 Event 1 for Count
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Coprocessor 0 269 Event 6 for Count
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Coprocessor 0 271 Event 14 for Coun
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Coprocessor 0 273 14.21 ECC Registe
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Coprocessor 0 275 CacheErr Register
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Coprocessor 0 277 CacheErr Register
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Coprocessor 0 279 Errata Primary In
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Coprocessor 0 281 Errata Errata Sec
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Coprocessor 0 283 Primary Data Cach
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Coprocessor 0 285 14.25 CP0 Instruc
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Coprocessor 0 287 14.27 CACHE Instr
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Coprocessor 0 289 Cache CACHE (cont
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Coprocessor 0 291 14.29 DMTC0 Instr
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Coprocessor 0 293 14.31 MFC0 Instru
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Coprocessor 0 295 MTPS 31 Format: M
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Coprocessor 0 297 14.34 TLBP Instru
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Coprocessor 0 299 14.36 TLBWI Instr
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15. Floating-Point Unit This sectio
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Floating-Point Unit 303 15.2 Floati
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Floating-Point Unit 305 Load and St
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Floating-Point Unit 307 63 63 Doubl
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Floating-Point Unit 309 Floating-Po
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Floating-Point Unit 311 Loading the
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Floating-Point Unit 313 Moves and C
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16. Memory Management This section
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Memory Management 317 Addressing Mo
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Memory Management 319 32-bit User M
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Memory Management 321 32-bit Superv
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Memory Management 323 32-bit Kernel
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Memory Management 325 0X BFFFFFFF 0
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Memory Management 327 64-bit Virtua
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Memory Management 329 Using the TLB
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17. CPU Exceptions This chapter des
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CPU Exceptions 333 17.3 TLB Refill
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CPU Exceptions 335 Priority of Exce
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CPU Exceptions 337 Soft † Reset E
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CPU Exceptions 339 NMI Exception Ca
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CPU Exceptions 341 TLB Exceptions T
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CPU Exceptions 343 TLB Invalid Exce
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CPU Exceptions 345 Cache Error Exce
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CPU Exceptions 347 Integer Overflow
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CPU Exceptions 349 System Call Exce
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CPU Exceptions 351 Reserved Instruc
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CPU Exceptions 353 Floating-Point E
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CPU Exceptions 355 Interrupt Except
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CPU Exceptions 357 17.5 COP0 Instru
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18. Cache Test Mode The R10000 proc
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Cache Test Mode 361 18.3 Entering C
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Cache Test Mode 363 18.5 SysAD(63:0
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Cache Test Mode 365 Auto-Increment
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Cache Test Mode 367 Auto-Increment
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A. Glossary The following terms are
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A.6 Dynamic Scheduling The R10000 p
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A.11 Nonblocking Loads and Stores M
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A.13 Logical and Physical Registers
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Index I-1 Index Numerics 16-word, c
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Index I-3 uncached accelerated, des
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Index I-5 branch on CP0 instruction
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Index I-7 F fetch pipeline 6, 17 fe
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Index I-9 TLBWR 285, 300 unsupporte
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Index I-11 NMI see also nonmaskable
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Index I-13 CP0 (description of) 235
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Index I-15 SysAD[20:16] interrupt r
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Index I-17 SysWrRdy, signal 41, 118
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