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5-4. Jumper Settings
Change the jumper settings for each type of CPU used according to the table below.
CPU TYPE SETTING
JP 486DX F P24C P24D P24T AMD+ AMD 5x86
8 2-3 2-3 2-3 1-2 2-3 2-3
9 Fit F Fit F Fit F Fit F Fit Fit
12 1-2 1-2 2-3 2-3 1-2 1-2
19 N-F N-F 2-3 N-F 2-3 2-3
23 N-F Fit Fit Fit Fit Fit
36 1-2 3-4 3-4 3-4 3-4 1-2
37 3-4 3-4 3-4 3-4 3-4 3-4
38 3-4 3-4 3-4 3-4 3-4 3-4
39 N-F N-F 5-6 N-F 1-3, 5-6 1-3, 5-6
Fit = Fitted / N-F = Not Fitted / Default setting is marked by an AT-sign F /
JP9 Fitted for Write Thru, Not Fitted for Write Back / JP39 1-3 Fitted for 133 MHz
Select the clock frequencies according to the CPU speed according to the table below.
CPU CLOCK SETTING
JP25 JP26 JP27 CPU CLOCK CPU CLOCK/2
(S2) (S1) (S0) (MHz) (MHz)
Fit Fit Fit 33.3 16.65
Fit Fit 80 40
Fit Fit 66.67 33.3
Fit 50 25
Fit Fit 40 20
Fit 60 30
Fit 25 12.5
33.3 F
16.65 F
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