Tyan Computer TYAN S1471 User Manual
Page 8
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S1471-001-01 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