參數(shù)資料
型號(hào)： FW82815
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)： 78/172頁
文件大?。?/td> 795K
代理商： FW82815
82815 GMCH
R
78
Datasheet
3.4.33.
ATTBASE—Aperture Translation Table Base Register
(Device 0: AGP Mode Only)
Address Offset:
B8–BBh
Default Value:
00000000h
Access:
Read/Write
Size:
32 bits
This register provides the starting address of the Graphics Aperture Translation Table Base located in the
main DRAM. This value is used by the GMCH’s Graphics Aperture address translation logic (including
the GTLB logic) to obtain the appropriate address translation entry required during the translation of the
aperture address into a corresponding physical DRAM address. The ATTBASE register may be
dynamically changed.
Note:
The address provided via ATTBASE is 4 KB aligned.
31
29
28
12
11
0
Reserved
ATT Base Address
Reserved
Bit
Description
31:29
Reserved.
28:12
ATT Base Address
. This field contains a pointer to the base of the translation table used to map
memory space addresses in the aperture range to addresses in main memory.
11:0
Reserved.
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