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MS-5185
CPU Speed and Voltage Setting: SW, JV1
To set the proper speed and voltage of the CPU, you must know the
specifications of your CPU (always ask the vendor for CPU specifications).
Then refer to Table 5 (AMD Processors) for proper setting
1. The DIP switch SW1 (1,2, and 3) is used to set the Core/Bus (Fraction)
ratio of the CPU.
|
SW1
|
CPU
|
|
1
|
2
|
3
|
Core/Bus Ratio
|
|
OFF
|
OFF
|
ON
|
5.5x
|
|
OFF
|
ON
|
ON
|
5x
|
|
ON
|
ON
|
ON
|
4.5x
|
|
ON
|
OFF
|
ON
|
4x
|
|
OFF
|
OFF
|
OFF
|
3.5x
|
|
OFF
|
ON
|
OFF
|
3x
|
|
ON
|
ON
|
OFF
|
2.5x
|
|
ON
|
OFF
|
OFF
|
2x
|
2. The DIP Switch SW (4,5, and 6) isused to adjust the CPU clock
frequency.
|
SW1
|
CPU
|
|
4
|
5
|
6
|
Clock
|
|
OFF
|
OFF
|
OFF
|
100Mhz
|
|
ON
|
OFF
|
OFF
|
95MHz
|
|
OFF
|
ON
|
OFF
|
83MHz
|
|
OFF
|
OFF
|
ON
|
75MHz
|
|
OFF
|
ON
|
ON
|
66MHz
|
|
ON
|
ON
|
ON
|
60MHz
|
|
ON
|
OFF
|
ON
|
68MHz
|
3. CPU Voltage Setting: JV1
(OFF stands for OPEN and ON for SHORT)
|
V I/O
|
Vcore
|
1
|
2
|
3
|
4
|
5
|
|
3.4
|
3.4
|
OFF
|
ON
|
ON
|
ON
|
OFF
|
|
3.4
|
3.3
|
ON
|
OFF
|
ON
|
ON
|
OFF
|
|
3.4
|
3.2
|
OFF
|
OFF
|
ON
|
ON
|
OFF
|
|
3.4
|
2.9
|
ON
|
OFF
|
OFF
|
ON
|
OFF
|
|
3.4
|
2.8
|
OFF
|
OFF
|
OFF
|
ON
|
OFF
|
|
3.4
|
2.4
|
OFF
|
OFF
|
ON
|
OFF
|
OFF
|
|
3.4
|
2.2
|
OFF
|
ON
|
OFF
|
OFF
|
OFF
|
|
3.45
|
1.3
|
OFF
|
OFF
|
OFF
|
OFF
|
ON
|
|
3.45
|
1.35
|
ON
|
OFF
|
OFF
|
OFF
|
ON
|
|
3.45
|
1.4
|
OFF
|
ON
|
OFF
|
OFF
|
ON
|
|
3.45
|
1.45
|
ON
|
ON
|
OFF
|
OFF
|
ON
|
|
3.45
|
1.5
|
OFF
|
OFF
|
ON
|
OFF
|
ON
|
|
3.45
|
1.55
|
ON
|
OFF
|
ON
|
OFF
|
ON
|
|
3.45
|
1.6
|
OFF
|
ON
|
ON
|
OFF
|
ON
|
|
3.45
|
1.65
|
ON
|
ON
|
ON
|
OFF
|
ON
|
|
3.45
|
1.7
|
OFF
|
OFF
|
OFF
|
ON
|
ON
|
|
3.45
|
1.75
|
ON
|
OFF
|
OFF
|
ON
|
ON
|
|
3.45
|
1.8
|
OFF
|
ON
|
OFF
|
ON
|
ON
|
|
3.45
|
1.85
|
ON
|
ON
|
OFF
|
ON
|
ON
|
|
3.45
|
1.9
|
OFF
|
OFF
|
ON
|
ON
|
ON
|
|
3.45
|
1.95
|
ON
|
OFF
|
ON
|
ON
|
ON
|
|
3.45
|
2.0
|
ON
|
ON
|
ON
|
ON
|
ON
|
|
3.45
|
2.1
|
ON
|
OFF
|
OFF
|
OFF
|
OFF
|
|
3.45
|
2.2
|
OFF
|
ON
|
OFF
|
OFF
|
OFF
|
|
3.45
|
2.3
|
ON
|
ON
|
OFF
|
OFF
|
OFF
|
|
3.45
|
2.4
|
OFF
|
OFF
|
ON
|
OFF
|
OFF
|
|
3.45
|
2.5
|
ON
|
OFF
|
ON
|
OFF
|
OFF
|
|
3.45
|
2.6
|
OFF
|
ON
|
ON
|
OFF
|
OFF
|
|
3.45
|
2.7
|
ON
|
ON
|
ON
|
OFF
|
OFF
|
|
3.45
|
2.8
|
OFF
|
OFF
|
OFF
|
ON
|
OFF
|
|
3.45
|
2.9
|
ON
|
OFF
|
OFF
|
ON
|
OFF
|
|
3.45
|
3.0
|
OFF
|
ON
|
OFF
|
ON
|
OFF
|
|
3.45
|
3.1
|
ON
|
ON
|
OFF
|
ON
|
OFF
|
|
3.45
|
3.2
|
OFF
|
OFF
|
ON
|
ON
|
OFF
|
|
3.45
|
3.3
|
ON
|
OFF
|
ON
|
ON
|
OFF
|
|
3.45
|
3.4
|
OFF
|
ON
|
ON
|
ON
|
OFF
|
|
3.45
|
3.5
|
ON
|
ON
|
ON
|
ON
|
OFF
|
5. AMD Processors: Intel Processors
a. AMD K6 Processor
|
CPU Type
|
CPU Voltage & Speed
|
|
VI/O
|
Vcore
|
JV1
|
SW1
|
| 233MHz |
3.4
|
3.2
|
1 OFF
2 OFF
3 ON
4 ON
5 OFF
|
|
1
|
2
|
3
|
4
|
5
|
6
|
|
OFF
|
OFF
|
OFF
|
OFF
|
ON
|
ON
|
|
| 266MHz |
3.4
|
2.2
|
1OFF
2 ON
3OFF
4OFF
5OFF
|
|
1
|
2
|
3
|
4
|
5
|
6
|
|
ON
|
OFF
|
ON
|
OFF
|
ON
|
ON
|
|
| 300MHz |
|
1
|
2
|
3
|
4
|
5
|
6
|
|
ON
|
ON
|
ON
|
OFF
|
ON
|
ON
|
|
| K6-2 300MHz |
|
1
|
2
|
3
|
4
|
5
|
6
|
|
OFF
|
ON
|
OFF
|
OFF
|
OFF
|
OFF
|
|
| K6-2 333MHz |
|
1
|
2
|
3
|
4
|
5
|
6
|
|
OFF
|
OFF
|
OFF
|
ON
|
OFF
|
OFF
|
|
| K6-2 350MHz |
|
1
|
2
|
3
|
4
|
5
|
6
|
|
OFF
|
OFF
|
OFF
|
OFF
|
OFF
|
OFF
|
|
| K6-2 366MHz |
|
1
|
2
|
3
|
4
|
5
|
6
|
|
OFF
|
OFF
|
ON
|
OFF
|
ON
|
ON
|
|
| K6-2 380MHz |
|
1
|
2
|
3
|
4
|
5
|
6
|
|
ON
|
OFF
|
ON
|
ON
|
OFF
|
OFF
|
|
K6-2
400MHz |
|
1
|
2
|
3
|
4
|
5
|
6
|
|
ON
|
OFF
|
ON
|
OFF
|
OFF
|
OFF
|
|
b: AMD K6-2 Processors:
|
CPU Type
|
CPU Voltage & Speed
|
|
VI/O
|
Vcore
|
JV1
|
SW1
|
|
450MHz
|
3.4
|
2.4
|
1 OFF
2 OFF
3 ON
4 OFF
5 OFF
|
|
1
|
2
|
3
|
4
|
5
|
6
|
|
ON
|
ON
|
ON
|
OFF
|
OFF
|
OFF
|
|
c: AMD K6-III Processors:
|
CPU Type
|
CPU Voltage & Speed
|
|
VI/O
|
Vcore
|
JV1
|
SW1
|
| 400MHz |
3.4
|
2.4
|
1 OFF
2 OFF
3 ON
4 OFF
5 OFF
|
|
1
|
2
|
3
|
4
|
5
|
6
|
|
ON
|
OFF
|
ON
|
OFF
|
OFF
|
OFF
|
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