User`s manual

18
Jumper Settings for Cyrix Processors
Cyrix Processors
PR120+/PR133+/
PR150+/PR166+
Freq. Ratio
2x
JP12
1-2 On, 3-4 Off
Cyrix Processors
PR120+
PR133+
PR150+
PR166+
Ext. Bus
CLK
50MHz
55MHz
60MHz
66MHz
JP7
1-2 On, 3-4 On
1-2 Off, 3-4 Off
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 (6x86L)
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