4xem BBPCHOME, User Manual

Page: 54 / 77

Mainboard User’s Manual
Memory Hole At 15M-16M :
If Set to “Enabled”, when the system
memory size is equal to or greater than 16M bytes, the physical
memory address from 15M to 16M will be passed to PCI or ISA and
there will be a 1 MB hole in your system memory. This option is
designed for some OS with special add-in cards which need 15-16
MB memory space. The default setting is “Disabled”.
Delayed Transaction : The chipset has an embedded 32-bit posted
write buffer to support delayed transactions cycles. Select Enabled to
support compliance with PCI specification version 2.1. The default
setting is “ Enabled”.
Delay Prior to Thermal : This item allows you to select the delay
time to enable the Pentium 4 CPU Thermal feature. Enable this
feature when using Windows NT 4.0 to prevent the system from
hanging. The default setting is “ 16Min”, and other options are
“4Min”, “8Min”, or “32Min”.
AGP Aperture Size <MB> : This option determines the effective
size of the AGP Graphic Apertu re, where memory-mapped graphic
data structures are located. The default setting is “ 64”, and other
options are “4”, “8”, “16”, “32”, “128”, or “256”.
** On-Chip VGA Setting **
On-Chip VGA : The item allows you to Enable/Disable the VGA
onboard.
On-Chip VGA Frame Buffer Size : This item allows you to control
the VGA Frame Buffer size. The default setting is “8M”.
After you have made your selections in the Standard CMOS Setup
screen, press
<ESC> to go back to the main screen.
Advanced Chipset Features 46