User`s manual

19
Jumper Settings for AMD-K5 Processors
P-Rating/Core MHz
PR75/75MHz
PR90/90MHz
PR100/100MHz
PR120/90MHz
PR133/100MHz
Freq. Ratio
1.5x
JP12
1-2 Off, 3-4 Off
P-Rating/Core MHz
PR75/75MHz
PR90/90MHz
PR100/100MHz
PR120/90MHz
PR133/100MHz
Ext. Bus
CLK
50MHz
60MHz
66MHz
60MHz
66MHz
JP7
1-2 On, 3-4 On
1-2 On, 3-4 Off
1-2 Off, 3-4 On
1-2 On, 3-4 Off
1-2 Off, 3-4 On
Warning:
The default setting of JP9, JP10, JP20 and JP21
is 3.3V. If the voltage of your CPU is not 3.3V,
make sure you set JP9, JP10, JP20 and JP21
according to the voltage of your CPU, otherwise,
your system will hang.
Voltages
2.5V
2.8V
2.9V
3.3V*
3.5V
JP9
3-4 On
3-4 On
3-4 On
3-4 On
1-2 On
JP10
1-3, 2-4 On
1-3, 2-4 On
1-3, 2-4 On
3-5, 4-6 On
3-5, 4-6 On
JP20
1-2 On
3-4 On
5-6 On
3-4 On
3-4 On
JP21
1-2, 3-4 Off
1-2, 3-4 Off
1-2, 3-4 Off
1-2, 3-4 On
1-2, 3-4 On
JP9
JP10
JP21
JP12
JP7
2
4
1
3
3
1
4
2
2
4
1
3
1
2
3
4
2
4
1
3
6
5
JP20
2
4
1
3
6
5