5IVXA JUMPER SETTING

SET CPU VOLTAGE

CPU POWER
TYPE/JUMPER

JP21

JP24

JP20

ONLY 3.3V

1-3,2-4

1-2

open

ONLY 3.52V

1-3,2-4

2-3

open

DUAL 3.3V & 3.3V

1-3,2-4

1-2

1-2

DUAL 3.52V & 3.52V

1-3,2-4

2-3

1-2

DUAL 2.8V & 3.3V

open

1-2

1-2

DUAL 2.8V & 3.52V

open

2-3

1-2

DUAL 2.7V & 3.3V

open

1-2

3-4

DUAL 2.7V & 3.52V

open

2-3

3-4

DUAL 2.5V & 3.3V

open

1-2

4-5

DUAL 2.5V & 3.52V

open

2-3

4-5

Note: it seems REV B of this board does not have the JP20 jumper,
currently trying to find out how the core voltage should be set.

QUICK TO SETTING FOR CYRIX 6X86 CPU CLK & VOLTAGE

(1) CPU CLK
Product name CPU speed Bus speed Jumper JP6 Multiplier
6X86-P120-GP 100 50 3-4, 7-8, 9-10 2X
6X86-P133-GP 110 55 3-4, 7-8 2X
6X86-P150-GP 120 60 3-4, 9-10 2X
6X86-P166-GP 133 66 3-4 2X
6X86-P200-GP 150 75 3-4, 5-6 2X

JP6: SET CPU CLK AND FREQUENCY /RATIO

JP6(1-2,3-4)

They are used to set CPU
Frequency /Ratio

JP6(5-6,7-8,9-10)

They are used to set CPU CLK

- 1.5X and 3.5X 7-8, 9-10 50
3-4 2X 7-8 55
1-2, 3-4 2.5X 9-10 60
1-2 3X 66
- 5-6 75

INSTALL 586 CPU

QUICK TO SETTING FOR INTEL PENTIUM MMX CLK & VOLTAGE

CPU CLK
Product Name

CPU Speed

(MHZ)

BUS CLK

(MHZ)

JP6 Multiplier
PENTIUM-75
AMD-K5-PR75
75 50 7-8, 9-10 1.5X
PENTIUM-90
AMD-K5-PR90
AMD-K5-PR120
90 60 9-10 1.5X
PENTIUM-100
AMD-K5-PR100
AMD-K5-PR133
100 66 all open 1.5X
PENTIUM-120
AMD-K5-PR150
120 60 3-4, 9-10 2X
PENTIUM-133
AMD-K5-PR166
133 66 3-4 2X
PENTIUM-150 150 60 1-2, 3-4, 9-10 2.5X
PENTIUM-166
PENTIUM-MMX-166
AMD K6-166
166 66 1-2, 3-4 2.5X
PENTIUM-180 180 60 1-2, 9-10 3X
PENTIUM-200
PENTIUM-MMX-200
AMD K6-200
200 66 1-2 3X
PENTIUM-MMX-233
AMD K6-233
233 66 all open 3.5X

 

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