8-11
DATA INTEGRITY
8.4.1.
Speculative Errors
The Pentium Pro processor may treat some errors on speculative requests as recoverable errors.
The error is logged and, if the instruction is not executed, may be ignored.
8.4.2.
Fatal Errors
In some circumstances, the Pentium Pro processor treats unrecoverable errors as fatal errors.
This occurs for unrecoverable errors on snoops, accesses to modified data, split accesses, and
locked accesses.
Figure 8-3. Pentium
®
Pro Processor Errors
Bus Read 1-bit ECC
Bus Request 1st AERR#
L2 1-bit ECC
Speculative
1
10
Bus Read 2-bit ECC
Bus Request 2nd AERR#
Bus Hard Error Response
L2 2-bit ECC
Internal Parity
BINIT#
FRCERR
Master
Checker
NE on Snoop
NE on RFO
NE on M line
NE on Split
NE on Lock
Pentium
®
Pro Timeout
RSP# error
1
10
12
2
2
log
CR4.MCE
!Checker
!MCIP
MCE
IERR#
BERR#
6
log
log
BINIT#
7
IF
ELSE
Non-
Fatal
Recoverable
SHUTDOWN
RESET BUS
Error
recoverable
Error
Error
Summary of Contents for Pentium Pro Family
Page 17: ...1 Component Introduction ...
Page 26: ...2 Pentium Pro Processor Architecture Overview ...
Page 27: ......
Page 36: ...3 Bus Overview ...
Page 62: ...4 Bus Protocol ...
Page 105: ...5 Bus Transactions and Operations ...
Page 126: ...6 Range Registers ...
Page 131: ...7 Cache Protocol ...
Page 135: ...8 Data Integrity ...
Page 148: ...9 Configuration ...
Page 161: ...10 Pentium Pro Processor Test Access Port TAP ...
Page 172: ...11 Electrical Specifications ...
Page 201: ...12 GTL Interface Specification ...
Page 229: ...13 3 3V Tolerant Signal Quality Specifications ...
Page 233: ...14 Thermal Specifications ...
Page 239: ...15 Mechanical Specifications ...
Page 241: ...15 2 MECHANICAL SPECIFICATIONS s Figure 15 1 Package Dimensions Bottom View ...
Page 252: ...16 Tools ...
Page 260: ...16 8 TOOLS Figure 16 4 Generic MP System Layout for Debug Port Connection ...
Page 264: ...17 OverDrive Processor Socket Specification ...
Page 290: ...A Signals Reference ...
Page 320: ...Index ...
Page 328: ......