Abit AW8 user manual Advanced Chipset Features

BIOS Setup 3-15

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.

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:

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

!RAS# to CAS# Delay

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

!RAS# Precharge:

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.

User’s Manual