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參數(shù)資料
| 型號(hào)： | 82845GV |
| 廠商： | INTEL CORP |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 中文描述： | MULTIFUNCTION PERIPHERAL, PBGA760 |
| 封裝： | 37.50 X 37.50 MM, 1 MM PITCH, FLIP CHIP, BGA-760 |
| 文件頁(yè)數(shù)： | 66/193頁(yè) |
| 文件大?。?/td> | 2990K |
| 代理商： | 82845GV |
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Register Description
66
Intel
82845G/82845GL/82845GV GMCH Datasheet
Microsoft MS-DOS* Application Area (00000h–9FFFh)
The MS-DOS* area is 640 KB in size and it is further divided into two parts. The 512-KB area at 0
to 7FFFFh is always mapped to the main memory controlled by the GMCH, while the 128-KB
address range from 080000h to 09FFFFh can be mapped to PCI_A or to main DRAM. By default
this range is mapped to main memory and can be declared as a main memory hole (accesses
forwarded to PCI_A) via the GMCH FDHC configuration register.
Video Buffer Area (A0000h–BFFFFh)
Attribute bits do not control this 128-KB area. The host -initiated cycles in this region are always
forwarded to either PCI_A or AGP unless this range is accessed in SMM mode.
Routing of
accesses is controlled by the Legacy VGA control mechanism of the “virtual” PCI-to-PCI
bridge device embedded within the GMCH.
This area can be programmed as SMM area via the SMRAM register. When used as a SMM space,
this range cannot be accessed from the hub interface or AGP.
Expansion Area (C0000h–DFFFFh)
This 128-KB area is divided into eight, 16-KB segments that can be assigned with different
attributes via the PAM Control registers as defined by
Table 3-2
.
Extended System BIOS Area (E0000h–EFFFFh)
This 64-KB area is divided into four, 16-KB segments that can be assigned with different attributes
via the PAM Control registers as defined by
Table 3-2
.
System BIOS Area (F0000h–FFFFFh)
This area is a single, 64-KB segment, which can be assigned with different attributes via the PAM
Control registers as defined by
Table 3-2
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 82845Gx | Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 82845MP | Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M) |
| 82845Mx | Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M) |
| 82845MZ | Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M) |
| 82845PE | 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 82845GX | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 82845MP | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M) |
| 82845MX | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M) |
| 82845MZ | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M) |
| 82845PE | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH) |
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