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2.5
CPU BUS FREQUENCY RATIO (SW1-5,6,7)
These switches set the frequency ratio between the Internal frequency of the CPU
and the External frequency (called the Bus clock) within the CPU. These must be
set together with the above jumpers CPU External (Bus) Frequency Selection.
2.6
CPU EXTERNAL (BUS) FREQUENCY SELECTION
(SW1-8,9,10)
These switches tell the clock generator what frequency to send to the CPU. The Bus
clock times the Bus Ratio equals the CPU's Internal frequency.
2.7
CHIPSET BUS CLOCK SETTING (JP9, JP10)
These jumpers set the chipset timing according the CPU external bus frequency
selection.
2.8
CPU SPEED
CPU Type
Freq.
Intel Pentium
90MHz
Intel Pentium
100MHz 1.5x
Intel Pentium
120MHz 2.0x
Intel Pentium
133MHz 2.0x
Intel Pentium
150MHz 2.5x
Intel Pentium
166MHz 2.5x
Intel Pentium
200MHz 3.0x
Intel Pentium w/MMX 166MHz 2.5x
Intel Pentium w/MMX 200MHz 3.0x
Intel Pentium w/MMX 233MHz 3.5x
AMD-K5-PR120
120MHz 2.0x
AMD-K5-PR133
133MHz 2.0x
AMD-K5-PR166
166MHz 2.5x
AMD-K6/166
166MHz 2.5x
AMD-K6/200
200MHz 3.0x
AMD-K6/233
233MHz 3.5x
AMD-K6/266
266MHz 4.0x
AMD-K6/300
300MHz 4.5x
Ratio
Bus
Freq. Ratio Setting Bus Freq. Setting
Freq.
1-5
1-6
1.5x
60MHz OFF
OFF
66MHz OFF
OFF
60MHz
ON
OFF
66MHz
ON
OFF
60MHz
ON
ON
66MHz
ON
ON
66MHz OFF
ON
66MHz
ON
ON
66MHz OFF
ON
66MHz OFF
OFF
60MHz
ON
OFF
66MHz
ON
OFF
66MHz
ON
ON
66MHz
ON
ON
66MHz OFF
ON
66MHz OFF
OFF
66MHz
ON
OFF
66MHz
ON
ON
To be continued..
Table 3a
Jumper Settings
JP9 JP10
1-7
1-8
1-9
1-10
OFF
ON
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
ON
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
ON
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
ON
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
OFF
ON
ON
2-3
OFF
OFF
ON
ON
2-3
ON
OFF
ON
ON
2-3
ON
OFF
ON
ON
2-3
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
13
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