Pentium Class 75 thru 200MHz 430VX PCI-ISA System Board User Manual

8S1471-001-01 http://www.tyan.com
3.2 Jumper Settings
CPU Speed Settings for Pentium P54C and P55C:
J15 J40 J39 CPU Speed
1-2, 3-4 Off Off 75 MHz
3-4 Off Off 90 MHz
1-2 Off Off 100 MHz
3-4 On Off 120 MHz
1-2 On Off 133 MHz
3-4 On On 150 MHz
1-2 On On 166 MHz
1-2 Off On 200 MHz
CPU Speed Settings for Cyrix/SGS/IBM 6x86/M1:
J15 J40 J39 CPU Speed CPU ID
1-2, 3-4 On Off 100MHz P120+
3-4 On Off 120MHz P150+
1-2 On Off 133MHz P166+
CPU Voltage Regulator Settings:
Pentium MMX requires two voltage sources, J20, J21, & J22 are settings for
one source. J23, J24 and J35 are settings for the second voltage source. The
default setting is for P54C/MMX CPU's.
P54C& MMX Cyrix
J20 3.5V on off
J21 3.3V off on
J22 3.6V off off
J23 off on
J24 on off
J35 on off