Asus AP1720-E1 - Manual (Page 81)

ASUS PC-DL Deluxe motherboard 4-13
DRAM RAS# Precharge [3]
This item controls the idle clocks after issuing a precharge command to
the DDR SDRAM. Configuration options: [4] [3] [2]
DRAM Data Integrity Mode [ECC]
Configuration options: [ECC] [Non-ECC]
System BIOS Cacheable [Enabled]
This item allows you to enable or disable the BIOS cacheable function.
Configuration options: [Disabled] [Enabled]
Memory Hole at 15M-16M [Disabled]
This field allows you to reserve an address space for ISA expansion cards.
Setting the address space to a particular setting makes that memory
space unavailable to other system components. Expansion cards can only
access memory up to 16MB. Configuration options: [Disabled] [Enabled]
AGP Aperture Size [128]
This feature allows you to select the size of mapped memory for AGP
graphic data. Configuration options: [4] [8] [16] [32] [64] [128] [256]
Auto Detect PCI Clock [Enabled]
This item allows you to select the maximum PCI bus speed to be
porgrammed. Configuration options: [Enabled] [Disabled]
Video BIOS Cacheable [Disabled]
This item allows you to enable or disable the video BIOS cacheable
function. Setting to [Enabled] imploves the display speed by caching the
display data. Configuration options: [Disabled] [Enabled]