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): 118/172頁
文件大小: 795K
代理商: FW82815
82815 GMCH
R
118
Datasheet
3.8.
Display Cache Detect and Diagnostic Registers
The following registers are used for display cache detection and diagnostics. These registers can be
accessed via either I/O space or memory space. The memory space addresses listed are offsets from the
base memory address programmed into the MMADR register (Device 2, PCI configuration offset 14h).
For each register, the memory-mapped address offset is the same address value as the I/O address.
3.8.1.
GRX—GRX Graphics Controller Index Register
I/O (and Memory Offset) Address:
Default:
Access:
Size:
7
3CEh
0Uh (U=Undefined)
Read/Write
8 bits
4
3
0
Reserved (0000)
Graphics Controller Register Index
Bit
Description
7:4
Reserved.
Read as 0s.
3:0
Sequencer Register Index.
This field selects any one of the graphics controller registers (GR[00:08]) to
be accessed via the data port at I/O location 3CFh.
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