Abit GD8PRO User Manual
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BIOS Setup




Report No FDD For OS:

When set to [Yes], this item allows you to run some older operating system without floppy disk drive. Leave this item to its default setting.

Delay IDE Initial (Secs):

This item allows the BIOS to support some old or special IDE devices by prolonging this delay time. A larger value will give more delay time to the device for which to initialize and to prepare for activation.

Full Screen LOGO Show:

This item determines to show the full screen logo when booting.

Disable Unused PCI Clock:

This option disables the clock of PCI slot that is not in use.

[Yes]: The system automatically detect the unused DIMM and PCI slots, and stop sending clock signal to these unused PCI slots.

[No]: The system always send clock signal to all PCI slots.

NOTE: Set this option to [No] setting if there are adapters that cannot be automatically detected by the system and will cause malfunction.

3-4.Advanced Chipset Features

DRAM Timing Selectable:

This item sets the optimal timings for the following four items, depending on the memory module you are using. The default setting “By SPD” configures these four items by reading the contents in the SPD (Serial Presence Detect) device. The EEPROM on the memory module stores critical parameter information about the module, such as memory type, size, speed, voltage interface, and module banks.

!CAS Latency Time (tCL):

This item controls the latency between the DRAM read command and the time that the data becomes actually available.

!RAS# to CAS# Delay (tRCD)

This item controls the latency between the DRAM active command and the read/write command.

User’s Manual


Chapter 3



!RAS# Precharge (tRP):

This item controls the idle clocks after issuing a precharge command to the DRAM.

!Precharge Delay (tRAS)

This item controls the number of DRAM clocks used for the DRAM parameters.

Memory Hole At 15M-16M:

When set to [Enabled], the memory address space at 15M-16Mwill be reserved for ISA expansion cards that specifically requires this setting. This makes the memory from 15MB and up unavailable to the system. Leave this item to its default setting.

#PCI Express Root Port Func:

Click <Enter> key to enter its submenu:

PCI Express Slot 1 ~ PCI Express Slot 3:

This option enables or disables the PCI Express port function.

PCI-ECompliancy Mode:

This item selects the mode for PCI Express add-oncard.

#Back to Advanced Chipset Features Setup Menu:

Init Display First:

This item selects whether to initiates from “PCI Express Slot” or “PCI Slot” first when system boots up.

PEG Force X1:

When set to [Enabled], this item forces the PEG port down to x1 mode.

GD8 Pro