參數資料
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: 35/144頁
文件大?。?/td> 2179K
代理商: AMDK86
AMD-K5 Processor
23
21062E/0—June 1997
AMD K86 Family BIOS and Software Tools Developers Guide
Preliminary Information
Figure 2. Hardware Configuration Register (HWCR)
Table 11. Hardware Configuration Register (HWCR) Fields
Bit
31–8
Mnemonic
Description
Function
reserved
Disables data cache
0 = enabled, 1 = disabled
Disables instruction cache
0 = enabled, 1 = disabled
Disables branch prediction
0 = enabled, 1 = disabled
Enables write allocation
0 = disabled, 1 = enabled
7
DDC
Disable Data Cache
6
DIC
Disable Instruction Cache
5
DBP
Disable Branch Prediction
4
WA*
Enable Write Allocate
Note:
*
The AMD-K5 processor supports write allocate only on Models 1, 2, and 3, with a Stepping of 4 or greater.
8
7
6
5
4
3
2
1
0
31
D
I
C
D
D
C
D
B
P
D
C
D
S
P
C
Reserved
W
A
Symbol
DDC
DIC
DBP
WA
DC
Description
Disable Data Cache
Disable Instruction Cache
Disable Branch Prediction
Write Allocate Enable
Debug Control
000 Off
001 Enable branch trace usages
Bits
7
6
5
4
3–1
DSPC
Disable Stopping Processor Clocks
0
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