參數(shù)資料
型號: AMDK86
英文描述: AMD K86 - AMD K86 Family BIOS and Software Tools Developers Guide
中文描述: AMD的K86 - AMD的K86系列BIOS和軟件工具開發(fā)人員指南
文件頁數(shù): 74/144頁
文件大小: 2179K
代理商: AMDK86
62
AMD-K5 Processor
AMD K86 Family BIOS and Software Tools Developers Guide
21062E/0—June 1997
Preliminary Information
Figure 15. 4-Mbyte Paging Mechanism
To enable the 4-Mbyte paging option:
1. Set the Page Size Extension (PSE) bit in CR4 to 1.
2. Set the Page Size (PS) bit in the page-directory entry to 1.
3. Write the physical base addresses of 4-Mbyte pages in bits
31–22 of page-directory entries. (Bits 21–12 of these entries
must be cleared to 0 or the processor generates a page
fault.)
4. Load CR3 with the base address of the page directory that
contains these page-directory entries.
Linear Address
Page
Directory
4-Mbyte Page
Frame
CR3
0
21
31
22
Page-Directory
Offset
Page
Offset
PDE
Physical
Address
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