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SY-5EHM/5EH5 V1.x
Quick Start Guide
11
Installation
Frequency Setting:
SW1
Processor Multiplier
CPU
Bus
Clock
JP7 JP9 JP10
1 2 3 4 5 6
2.5x 66MHz 2-3 2-3 1-2
on on off off off off
Cyrix 6x86 MX PR 200
2.0x 75MHz 2-3 2-3 1-2
on off off off on off
Cyrix 6x86 MX PR 233
2.5x 75MHz 2-3 2-3 1-2
on on off off on off
Cyrix 6x86 MX PR 266
2.5x 83MHz 1-2 2-3 1-2
on on off on on off
3.5x 66MHz 2-3 2-3 1-2
off off off off off off
Cyrix MII 300
3x 75MHz 2-3 2-3 1-2
off on off off on off
4.0x 66MHz 2-3 2-3 1-2
on off on off off off
3.5x 75MHz 2-3 2-3 1-2
off off off off on off
Cyrix MII 333
3x 83MHz 1-2 2-3 1-2
off on off on on off
Cyrix MII 350 3x 100MHz 1-2 2-3 1-2
off on off off off on
Cyrix MII 366 2.5x 100MHz 1-2 2-3 1-2
on on off off off on
P54C P100 1.5x 66MHz 2-3 2-3 1-2
off off off off off off
P54C P133 2.0x 66MHz 2-3 2-3 1-2
on off off off off off
P54C/P55C P166 2.5x 66MHz 2-3 2-3 1-2
on on off off off off
P54C/P55C P200 3x 66MHz 2-3 2-3 1-2
off on off off off off
P55C P233 3.5x 66MHz 2-3 2-3 1-2
off off off off off off
IDT X86 CPU C6/2-
200
3x 66MHz 2-3 2-3 1-2
off on off off off off
IDT X86 CPU C6/2-
225
3x 75MHz 2-3 2-3 1-2
off on off off on off
IDT X86 CPU 2-233 3.5x 66MHz 2-3 2-3 1-2
off off off off off off
IDT X86 CPU 2-266 2.33x 100MHz 1-2 2-3 1-2
off on on
off off on
IDT X86 CPU 2-300 2.5x 100MHz 2-3 2-3 1-2
on on off
off off on
3x 66MHz 2-3 2-3 1-2
off on off off off off
Rise mP6 PR266
2.0x 100MHz 1-2 2-3 1-2
on off off
off off on
This main board supports various CPU multiplier and host bus frequency settings.
Please select the proper frequency setting based on specifications of the CPU you have purchased. System
stability or components damage, in case of over-specification setting, is not guaranteed.