CHAINTECH 9EJL4 User Manual page 25

DRAM RAS# Precharge:
This item controls the idle clocks after issuing Precharge command to the DRAM.
System BIOS Cacheable:
Enabling this function allows caching of the system BIOS ROM at F0000h-FFFFFh,
which results in better system performance. However, if any program writes to this
memory area, a system error may result. It is advised to leave it in default setting.
Caching the system BIOS results in better performance than shadowing the system
BIOS.
Video BIOS Cacheable:
Enabling this function will allow caching of the video BIOS, resulting in better
system performance. However, if any programs write to this memory area, a system
error may occur.
Delayed Transaction:
Available options: [Disabled] and [Enabled].
Delay Prior to Thermal
Available options: None, 4, 8, 16, and 32 min.
AGP Aperture Size (MB):
This function determines the amount of system memory that is given to the AGP
card. Options range from 4MB to 256MB. This is a dynamic memory allocation in
that the AGP card will only use the amount of memory that it needs. The remaining
unused memory is also available for system usage. For example, if 16MB is
allocated to the AGP card and the card only needs 8MB, the remaining 8MB will be
available for system usage.
Flash BIOS Protection:
The motherboard manufacturer developed BIOS protection technology that protects
the System BIOS from accidental corruption by unauthorized users or computer
viruses. When enabled, the BIOS data cannot be changed when attempting to update
BIOS with the FLASH utility and vice versa.
Chapter 3
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