First International Computer AN11, Manual

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BIOS Setup
Frequency/Voltage Control
Auto Detect DIMM/PCI Clk
When enabled, BIOS will detect the PCI slot and DIMM slot. If no any
device in, BIOS will auto disable its clock.
The options are: Enabled, Disabled.
Spread Spectrum
This feature is used to set the spread Spectrum to be center spread type or
down spread type. The options are: Disabled, +/-0.25%, -0.5%, +/-0.5%, +/
-0.38%,
CPU Host/PCI Clock
This feature allows you to set the CPU/PCI clock frequency. The default
setting, Default, will detect your CPU/PCI clock frequency automatically. If
you set a unappropriate option which leads to a booting problem, keep
pressing the Insert key until the display appears will solve it.
The option list offered all combinations that supported by this mainboard.
Load Fail-Safe Defaults
This submenu is selected to diagnose the problem after the computer boots, if
the computer will not boot. These settings do not give optimal performance.