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): 78/144頁
文件大小: 2179K
代理商: AMDK86
66
AMD-K5 Processor
AMD K86 Family BIOS and Software Tools Developers Guide
21062E/0—June 1997
Preliminary Information
Figure 17. Page-Table Entry (PTE)
Table 21. Page-Table Entry (PTE) Fields
Bit
Mnemonic
BASE
Description
Physical Base Address The physical base address of a 4-Kbyte page.
Software may use the field to store any type of information.
When the page-table entry is not present (P bit cleared), bits 31–1
become available to software.
Global*
0 = local, 1 = global.
This bit is ignored in page-table entries, although clearing it to 0
preserves consistent usage of this bit between page-table and
page-directory entries.
The processor sets this bit to 1 during a write to the page that is
mapped by this page-table entry.
0 = not written, 1 = written.
The processor sets this bit to 1 during a read or write to any page
that is mapped by this page-table entry.
0 = not read or written, 1 = read or written.
Specifies cacheability for all locations in the page mapped by this
page-table entry. Whether a location is actually cached also
depends on several other factors.
0 = cacheable page, 1 = non-cacheable.
Function
31–12
11–9
AVL
Available to Software
8
G
7
PS
Page Size
6
D
Dirty
5
A
Accessed
4
PCD
Page Cache Disable
Note:
*
The AMD-K5 processor supports global paging only on Models 1, 2, and 3, with a Stepping of 4 or greater.
8
7
6
5
4
3
2
1
0
31
P
C
D
U
/
S
W
/
R
G
9
10
11
12
A
V
L
P
S
A
P
W
T
P
Physical Page Base Address
Reserved
21
22
Symbol
AVL
G
PS
A
PCD
PWT
U/S
W/R
P
Description
Available to Software
Global
Page Size 1 = 4 Mbytes
Reserved = 0
Accessed
Page Cache Disable
Page Writethrough
User/Supervisor
Write/Read
Present (valid)
Bits
11–9
8
7
6
5
4
3
2
1
0
相關(guān)PDF資料
PDF描述
AMDOPTERON AMD Opteron - AMD Opteron Processor Data Sheet
AMH461 AMH461
AMIS-30622 I2C Microstepping Motordriver
AMIS-30660 High Speed CAN Transceiver
AMIS-39100 Octal High Side Driver with Protection
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AMDL10 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC
AMDL100 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC
AMDL100G 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC
AMDL100J 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC
AMDL10G 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC