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Register Descriptions
2-16 Intel® 460GX Chipset Software Developer’s Manual
5 System Bus Double Bit Error (DEDF)
ECC Double Bit Error Detected on system bus.
4 System Bus Single Bit Error (SECF)
ECC Single Bit Error Detected on system bus.
3 SDC Card A Double Bit Error (DED1)
ECC Double Bit Error Detected from Memory Card A.
2 SDC Card A Single Bit Error (SEC1)
ECC Single Bit Error Detected from Memory Card A.
1 SDC Card B Double Bit Error (DED0)
ECC Double Bit Error Detected from Memory Card B.
0 SDC Card B Single Bit Error (SEC0)
ECC Single Bit Error Detected from Memory Card B.
2.4.2.14 SDC_NERR: SDC Next Error Status Register
Bus CBN, Device Number: 04h
Address Offset: 84-87h Size: 32 bits
Default Value: 0000h Attribute: Read/Write to Clear
This register records the next error status within the SDC. Writing a ’1’ to this register will clear
the bit in both SDC_NERR and the same bit in SDC_FERR.
Bits
Description
31:0 See SDC_FERR for bit definitions.
2.4.2.15 PCMD_FERR: Command on First PCMD Parity Error
Bus CBN, Device Number: 04h
Address Offset: 88-8Bh Size: 32 bits
Default Value: 00h Attribute: Read Only, New Value Latched
anytime appropriate FERR register
bit is set
This register records and latches the data associated with the first parity error detected on the
PCMD bus.
Bits
Description
31:19 reserved(0)
18 If set then the error was detected on the 1
st
half of the double–pumped transfer.
Otherwise, these fields contain the information from the 2
nd
half of the double-pumped
transfer.
17 Parity of Error
16:0 PCMD - Private Data Command value of Error.
2.4.2.16 PITID_FERR: Data on First PITID Parity Error
Bus CBN, Device Number: 04h
Address Offset: 8Ch Size: 8 bits
Default Value: 0h Attribute: Read Only, New Value Latched
anytime appropriate FERR register
bit is set