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CPU Type
JP16
486DX/DX2
OPEN
486SX
OPEN
486SX SL
OPEN
486DX/DX2 SL
OPEN
P24C
OPEN
P24D
OPEN
P24T
1-2
Cx486S
2-3
Cx486DX
2-3
Cx486M9
2-3
UMC U5
OPEN
AMD486DXLT
OPEN
AMD Enhanced CPU
OPEN
Note :
P24C : Intel DX4-100 Write Through CPU
P24D : Intel DX4-100 Write Back CPU
P24T : Intel Overdrive CPU
AMD Enhanced CPU : AMD DX4-100 Write Back CPU
This mother board has been designed to work with a wide range of CPUs
from various vendors. Set this according to the type of CPU used.
WARNING : If you are using a 3.3V/3.45V or 4V CPU,
please ensure you have the optional 'DX4DB' converter connected.
JP18 : Flash ROM Power Select
1-2
12 Volt
2-3
5 Volt
Open
Normal EPROM
This mother board can use a FLASH ROM in order to change the system BIOS through software. This allow you to constantly
update your system BIOS as changes are made. Should you wish to use this feature then you must set this jumper according to the
voltage of that FLASH ROM. When using FLASH ROMs a Flash Memory Writer Utility software driver is required. For details
on this driver please contact your dealer or sales representative.
JP19 : Cyrix M9 Select
Short
Cyrix M9 Enable
Open
Other CPU
JP17
JP21
JP27
OPEN
OPEN
1-2,3-4
OPEN
OPEN
2-3
1-2
OPEN
2-3
1-2
OPEN
1-2,3-4
1-2
OPEN
1-2,3-4
1-2
OPEN
1-2,3-4
1-2
2-3
1-2,3-4
1-2
1-2
2-3
1-2
1-2
1-2,3-4
1-2
1-2
1-2,3-4
2-3
OPEN
2-3
2-3
OPEN
1-2,3-4
1-2
OPEN
1-2,3-4
JP28
JP29
JP30
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
2-3,4-5
OPEN
1-2
2-3,4-5
OPEN
1-2
2-3,4-5
OPEN
1-2
2-3,4-5
OPEN
1-2
2-3,4-5
2-3
1-2
1-2,3-4
1-2
2-3
1-2,3-4
2-3
2-3
2-3,4-5
OPEN
1-2
OPEN
3-4
OPEN
OPEN
3-4
OPEN
2-3,4-5
OPEN
1-2
11
JP36
JP40
1-2
3-4
1-2
OPEN
3-4
OPEN
3-4
3-4
3-4
3-4
3-4
3-4
3-4,5-6
2-3
3-4
OPEN
3-4
3-4
3-4
3-4
1-2
1-2,3-4
1-2
1-2,3-4
3-4
3-4
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