AMD-K6-2E Datasheet, PDF (71/332 Pages) Advanced Micro Devices – AMD-K6™-2E Embedded Processor

22529B/0—January 2000
Preliminary Information
AMD-K6™-2E Processor Data Sheet
Reserved
Symbol
G
D
AVL
P
DPL
DT
Type
Description
Granularity
32-Bit/16-Bit
Available to Software
Present/Valid Bit
Descriptor Privilege Level
Descriptor Type
See Table 9
Bits
23
22
20
15
14-13
12
11-8
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Base Address 31–24
A
GD
V ^{Segment P DPL 1}
Type
L
Limit
Base Address 23–16
Base Address 15–0
Segment Limit 15–0
Figure 47. Application Segment Descriptor
Table 9. Application Segment Types
Type Data/Code Description
0
Read-Only
1
Read-Only — Accessed
2
Read/Write
3
Read/Write — Accessed
Data
4
Read-Only — Expand-down
5
Read-Only—Expand-down, Accessed
6
Read/Write — Expand-down
7
Read/Write—Expand-down, Accessed
8
Execute-Only
9
Execute-Only — Accessed
A
Execute/Read
B
Execute/Read — Accessed
Code
C
Execute-Only — Conforming
D
Execute-Only—Conforming, Accessed
E
Execute/Read-Only — Conforming
F
Execute/Read-Only—Conforming, Accessed
Chapter 3
Software Environment
53