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Data Integrity and Error Handling
6-16 Intel® 460GX Chipset Software Developer’s Manual
Table 6-1. Error Cases
Error
Chip
Detecting
System
Action
Status
Register
Log
Register
Qualifier
System Bus 1x
ECC
SDC Correct the data and
pass to bus.
Conditional Interrupt.
SDC_FERR[SECF],
FERR_SAC[SNE]
SECF_D_FERR,
SECF_ECC_FERR,
SECF_TXINFO_FERR,
FSETID
SNE
Enable
System Bus 2x
ECC
SDC Write into memory with
bad ECC (poison data).
Conditional Interrupt.
SDC_FERR[DEDF],
FERR_SAC[SNE]
DEDF_D_FERR,
DEDF_ECC_FERR,
DEDF_TXINFO_FERR,
FSETID
SNE
Enable
Mem 1x ECC SDC Correct the data and
pass to bus.
Conditional Interrupt.
SDC_FERR[SECx],
FERR_SAC[SCME]
SECx_D_FERR,
SECx_ECC_FERR,
SECx_TXINFO_FERR,
SECTID
SCME
Enable
Mem 2x ECC SDC Pass to system bus with
bad ECC (poison data).
Conditional Interrupt.
SDC_FERR[DEDx],
FERR_SAC[SNE]
DEDx_D_FERR,
DEDx_ECC_FERR,
DEDx_TXINFO_FERR,
DEDTID
SNE
Enable
SAC to SDC Interface Errors
PDB Command
Parity Error
SDC Unconditional BINIT# SDC_FERR[CPE],
FERR_SAC[SFE]
PCMD_FERR
RSP Bus
Transmission Error
SDC Unconditional BINIT# SDC_FERR[RTE],
FERR_SAC[SFE]
SDCRSP_FERR
ITID Parity Error SDC Unconditional BINIT# SDC_FERR[IPE],
FERR_SAC[SFE]
PITID_FERR
PDB Receive
Length Error
SDC Unconditional BINIT# SDC_FERR[RLE],
DPBRLE_FERR,
FERR_SAC[SFE]
Nothing
PDB Data Parity
Error
SDC Failing Chunk of Data
will be put in memory
with bad ECC
(poisoned),
Conditional Interrupt.
SDC_FERR[DPE],
FERR_SAC[SNE]
PVD_D_FERR,
PVD_PAR_FERR,
PVD_TXINFO_FERR
SNE
Enable
PDB Byte Enables
Parity Error
SDC Entire Line of Data will
be put in memory with
bad ECC (poisoned),
Conditional Interrupt.
SDC_FERR[BPE],
FERR_SAC[SNE]
PVD_D_FERR,
PVD_PAR_FERR,
PVD_TXINFO_FERR
SNE
Enable
Configuration
Information Parity
Error
SDC Unconditional BINIT# SDC_FERR[CIE],
FERR_SAC[SFE]
Nothing
False retirement
seen by SAC
SAC Unconditional BINIT# FERR_SAC[FRE] Nothing
Retirement Bus
Parity Error
SAC Unconditional BINIT# FERR_SAC[RPE] Nothing
PDB ITID Parity
Error
SAC Unconditional BINIT# FERR_SAC[IPE] Nothing
‘Store-Retire’
Underflow
SAC Unconditional BINIT# FERR_SAC[SCxx] Nothing
System Bus ADD/CMND
Address Parity
Error
SAC Conditional BINIT# FERR_SAC[AE] SA_FERR Flag
System
Bus
Parity
Errors