16-4 Vol. 3B
INTERPRETING MACHINE-CHECK ERROR CODES
Table 16-4. Incremental Bus Error Codes of Machine Check for Processors
Based on Intel Core Microarchitecture
Type
Bit No. Bit Function
Bit Description
MCA error
codes
1
0-15
Model specific
errors
16-18
Reserved
Reserved
Model specific
errors
19-24 Bus queue request
type
‘000001 for BQ_PREF_READ_TYPE error
000000 for BQ_DCU_READ_TYPE error
000010 for BQ_IFU_DEMAND_TYPE error
000011 for BQ_IFU_DEMAND_NC_TYPE error
000100 for BQ_DCU_RFO_TYPE error
000101 for BQ_DCU_RFO_LOCK_TYPE error
000110 for BQ_DCU_ITOM_TYPE error
001000 for BQ_DCU_WB_TYPE error
001010 for BQ_DCU_WCEVICT_TYPE error
001011 for BQ_DCU_WCLINE_TYPE error
001100 for BQ_DCU_BTM_TYPE error
001101 for BQ_DCU_INTACK_TYPE error
001110 for BQ_DCU_INVALL2_TYPE error
001111 for BQ_DCU_FLUSHL2_TYPE error
010000 for BQ_DCU_PART_RD_TYPE error
010010 for BQ_DCU_PART_WR_TYPE error
010100 for BQ_DCU_SPEC_CYC_TYPE error
011000 for BQ_DCU_IO_RD_TYPE error
011001 for BQ_DCU_IO_WR_TYPE error
011100 for BQ_DCU_LOCK_RD_TYPE error
011110 for BQ_DCU_SPLOCK_RD_TYPE error
011101 for BQ_DCU_LOCK_WR_TYPE error
100100 for BQ_L2_WI_RFO_TYPE error
100110 for BQ_L2_WI_ITOM_TYPE error
Model specific
errors
27-25 Bus queue error type ‘001 for Address Parity Error
‘010 for Response Hard Error
‘011 for Response Parity Error
Model specific
errors
28
MCE Driven
1 if MCE is driven
29
MCE Observed
1 if MCE is observed
30
Internal BINIT
1 if BINIT driven for this processor
31
BINIT Observed
1 if BINIT is observed for this processor
Other
information
32-33 Reserved
Reserved
34
PIC and FSB data
parity
Data Parity detected on either PIC or FSB access
35
Reserved
Reserved