參數(shù)資料
型號: RG82845
英文描述: Controller Miscellaneous - Datasheet Reference
中文描述: 控制器雜項(xiàng)-數(shù)據(jù)表參考
文件頁數(shù): 154/157頁
文件大?。?/td> 1407K
代理商: RG82845
Intel
82845MP/82845MZ Chipset-Mobile (MCH-M)
96
Datasheet
250687-002
R
3.8.17.
MBASE1 – Memory Base Address Register – Device #1
Address Offset:
20-21h
Default Value:
FFF0h
Access:
Read/Write, Read Only
Size:
16 bits
This register controls the host to AGP non-prefetchable memory accesses routing based on the following
formula:
MEMORY_BASE1=< address =<MEMORY_LIMIT1
The upper 12 bits of the register are read/write and correspond to the upper 12 address bits A[31:20] of
the 32-bit address. The bottom 4 bits of this register are read-only and return zeros when read.
Configuration software must initialize this register. For the purpose of address decode, address bits
A[19:0] are assumed to be 0. Thus, the bottom of the defined memory address range will be aligned to a
1-MB boundary.
Bit
Description
15:4
Memory Address Base 1 (MEM_BASE1). Corresponds to A[31:20] of the memory address.
3:0
Reserved
相關(guān)PDF資料
PDF描述
RG82845MP Controller Miscellaneous - Datasheet Reference
RG82845MZ Controller Miscellaneous - Datasheet Reference
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