參數(shù)資料
型號： FW82815
英文描述： Controller Miscellaneous - Datasheet Reference
中文描述： 控制器雜項-數(shù)據(jù)表參考
文件頁數(shù)： 82/172頁
文件大?。?/td> 795K
代理商： FW82815
82815 GMCH
R
82
Datasheet
3.4.37.
ERRCMD—Error Command Register
(Device 0: AGP Mode Only)
Address Offset:
Default Value:
Access:
Size:
CBh
00h
Read/Write
8 bits
This register enables various errors to generate a SERR hub interface special cycle. Since the GMCH
does not have an SERR# signal, SERR messages are passed from the GMCH to the I/O Controller Hub
over the hub interface. The actual generation of the SERR message is globally enabled for Device 0 via
the PCI Command register.
Note:
An error can generate one and only one hub interface error special cycle. It is software’s responsibility to
make sure that when an SERR error message is enabled for an error condition, SMI and SCI error
messages are disabled for that same error condition.
7
6
5
4
3
2
1
0
Reserved
SRMMRO
SRTA
SLNDM
SAAOGA
SIAA
SAIGATTE
Bit
Description
7:6
Reserved.
5
SERR on Receiving Main Memory Refresh Overrun Enable.
Identical functionality in Device 2
memory mapped space @ 020B8h. This bit allows use of this same functionality in AGP Mode.
1 = Enable.
GMCH generates a SERR hub interface special cycle when a main memory refresh
overrun occurs.
0 = Disable. Reporting of this condition is disabled.
4
SERR on Receiving Target Abort on the hub interface.
1 = Enable.
GMCH generates a SERR hub interface special cycle when a GMCH-originated hub
interface cycle is terminated with a Target Abort.
0 = Disable. Reporting of this condition is disabled.
3
SERR on LOCK to non-DRAM Memory.
1 = Enable. GMCH generates a SERR hub interface special cycle when a processor-initiated LOCK
transaction targeting non-DRAM memory space occurs.
0 = Disable. Reporting of this condition is disabled.
2
SERR on AGP Access Outside of Graphics Aperture.
1 = Enable. GMCH generates a SERR hub interface special cycle when an AGP access occurs to an
address outside of the graphics aperture.
0 = Disable. Reporting of this condition is disabled.
1
SERR on Invalid AGP Access.
1 = Enable. GMCH generates a SERR hub interface special cycle when an AGP access occurs to an
address outside of the graphics aperture and either to the 640 KB–1 MB range or above the top of
memory.
0 = Disable.
0
SERR on Access to Invalid Graphics Aperture Translation Table Entry.
1 = Enable. GMCH generates a SERR hub interface special cycle when an invalid translation table
entry was returned in response to a AGP access to the graphics aperture.
0 = Disable. Reporting of this condition via SERR messaging is disabled.
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參數(shù)描述
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