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Table for Bus frequency Clock Ratio
DIP SWITCH
4
OFF
ON
ON
OFF
OFF
ON
ON
Table for CPU Type selection (
CPU Type
Intel P54C-75MHz
AMD K5-75MHz
Cyrix/IBM 6X86-120 +
C6-150MHz
Cyrix/IBM 6X86-133 +
Intel P54C-90MHz
AMD K5-PR90
Intel P54C-120MHz
Cyrix/IBM 6X86-150 +
Intel P54C-150MHz
Cyrix/IBM 6X86MX-PR166
C6-180MHz
DIP SWITCH
DIP SWITCH
5
OFF
OFF
ON
ON
OFF
OFF
ON
: ON,
DIP Switch
Setting
ON
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
1
2
3
4
5
6
Clock Ratio
6
OFF
OFF
OFF
OFF
OFF
ON
ON
: OFF)
DIP Switch (1,2,3)
DIP Switch (4,5,6)
External
clock frequency
50MHz
50MHz
50MHz
55MHz
60MHz
60MHz
60MHz
60MHz
7
1.5
2.0
2.5
3.0
3.5
4.0
4.5
External clock
frequency Ratio
Clock Ratio
= CPU frequency
1.5
2
100MHz
3
150MHz
110MHz
2
1.5
2
120MHz
2.5
150MHz
3
180MHz
75MHz
90MHz
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