beautypg.com

Intel 460GX User Manual

Page 115

background image

Intel® 460GX Chipset Software Developer’s Manual

6-17

Data Integrity and Error Handling

Request Parity
Error

SAC

Conditional BINIT#

FERR_SAC[RQE]

SA_FERR

Flag
System
Bus
Parity
Errors

Unsupported ASZ

SAC

Conditional BINIT#

FERR_SAC[ASE]

SA_FERR

Flag
System
Bus
Parity
Errors

Illegal HITM (HITM
on any Expander
bus access)

SAC

Unconditional BINIT#

FERR_SAC[IHS]

Nothing

Address above
TOM

SAC

Unconditional BINIT#

FERR_SAC[TE]

Nothing

LEN# Protocol
Error

SDC

Unconditional BINIT#

SDC_FERR[FS0],
FERR_SAC[SFE]

Nothing

DRDY# Protocol
Error

SDC

Unconditional BINIT#

SDC_FERR[FS2],
FERR_SAC[SFE]

Nothing

Write Data Protocol
Error

SDC

Unconditional BINIT#

SDC_FERR[FS1],
FERR_SAC[SFE]

Nothing

BERR# Observed

SAC

Convert to BINIT#

FERR_SAC

Nothing

BERR# to
BINIT#
Enable

IOQ Overflow/
Underflow

SAC

Unconditional BINIT#

FERR_SAC[IUE]

Nothing

External XBINIT#
Active

SAC

Unconditional BINIT#

FERR_SAC[XBE]

Nothing

External XSERR#
Active

SAC

Conditional BERR#

FERR_SAC[XSA]

Nothing

BERR#
Driver
Enable

LOCK# when no
resources are
available

SAC

Unconditional BINIT#

FERR_SAC[LTE]

Nothing

Resource Counter
Overflow/
Underflow

SAC

Unconditional BINIT#

FERR_SAC[RCE]

Nothing

Memory System Protocol Errors

SAC-MAC
Command Parity
Error

MAC

ERR# pin asserted on
MAC.
Unconditional BINIT# by
SAC.

FERR_SAC[MxE],
FERR_MAC

CMND_FERR

‘Complete’
Command
Underflow

SAC

Unconditional BINIT#

FERR_SAC[CCxx]

Nothing

‘Forward’
overlapping
‘Forward’

SDC

Unconditional BINIT#

SDC_FERR[FWMDIx],
FERR_SAC[SFE]

Nothing

‘Forward’
overlapping ‘Load’

SDC

Unconditional BINIT#

SDC_FERR[RdWrx],
FERR_SAC[SFE]

Nothing

‘Load’ overlapping
‘Load’

SDC

Unconditional BINIT#

SDC_FERR[LRMDIx],
FERR_SAC[SFE]

Nothing

‘Load’ overlapping
‘Forward’

SDC

Unconditional BINIT#

SDC_FERR[WrRdx],
FERR_SAC[SFE]

Nothing

‘Forward’
Underflow

SDC

Unconditional BINIT#

SDC_FERR[FRx, FLx],
FERR_SAC[SFE]

Nothing

Table 6-1. Error Cases (Cont’d)

Error

Chip

Detecting

System

Action

Status

Register

Log

Register

Qualifier