参数资料
型号: SIS600
厂商: SILICON INTEGRATED SYSTEMS CORP
元件分类: 外设及接口
英文描述: MULTIFUNCTION PERIPHERAL, PBGA487
封装: BGA-487
文件页数: 5/144页
文件大小: 1592K
代理商: SIS600
SiS600 Pentium II PCI /A.G.P. Chipset
Preliminary V1.0 Jan. 25, 1999
99
Silicon Integrated Systems Corporation
1
R/W
Graphic Window Base Address (Register 10[31:22]) Validation
The bit indicates the Graphic Window Base Address specified in GWBA Register
(Register 10h) is valid or not.
0: Invalid
1: Valid
0
R/W
GART Base Address for Re-mapping (Register 90[31:12]) Validation
This bit indicates the Re-mapping GART Base Address specified in Register 90h is
valid or not.
0: Invalid
1: Valid
Register 97h
Page Table Cache Control
Default Value:
00h
Access:
Read/Write
Page Table Cache is used to speedup the address translation process from graphic address to system memory
address. It stores recently used GART entries such that system memory access cycles can be reduced. This
register controls the characteristic of the page table cache and the address translation mechanism.
BIT
ACCESS
DESCRIPTION
7:3
R/W
Reserved
2
R/W
Page Table Cache Invalidation Control
When set to 0, write cycles to GART entries will automatically invalidate the entire
page table cache by hardware immediately. When set to 1, the mini-port driver will
be responsible for writing the Page Table Cache Invalidation Control Register
(Register 98h) to invalidate the page table cache when GART is being updated.
0: Detect writing GART entry
1: Write Configuration Register 98h
1
R/W
Reserved
0
R/W
Page Table Cache Enable
When enabled, page table cache will be used for accelerating the address
translation process. When disabled, no GART entries are cached in the page table
cache.
0: Disable
1: Enable
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