AMD-K6 Datasheet, PDF (62/346 Pages) Advanced Micro Devices – AMD-K6 Processor

AMD-K6^® Processor Data Sheet
Preliminary Information
20695H/0—March 1998
31
Page Table Base Address
Symbol
Description
Bits
AVL
Available to Software
11–9
Reserved
8
PS
Page Size
7
Reserved
6
A
Accessed
5
PCD
Page Cache Disable
4
PWT
Page Writethrough
3
U/S
User/Supervisor
2
W/R
Write/Read
1
P
Present (valid)
0
12 11 10 9 8 7 6 5 4 3 2 1 0
A
P P UW
V
0 A CW / / P
L
DT SR
Figure 37. Page Directory Entry 4-Kbyte Page Table (PDE)
31
22 21
Physical Page Base Address
Reserved
Symbol
Description
Bits
AVL
Available to Software
11–9
Reserved
8
PS
Page Size
7
Reserved
6
A
Accessed
5
PCD
Page Cache Disable
4
PWT
Page Writethrough
3
U/S
User/Supervisor
2
W/R
Write/Read
1
P
Present (valid)
0
12 11 10 9 8 7 6 5 4 3 2 1 0
A
P P UW
V
1 A CW / / P
L
DT SR
Figure 38. Page Directory Entry 4-Mbyte Page Table (PDE)
44
Software Environment
Chapter 3