BIOS SETUP
IB780 User’s Manual
35
Memory Hole
It is recommended to leave as disabled, although enabling 15M-16M can
help with sound issues.
P2C / C2P Concurrency
Set to Disabled for best performance. You may set this to Enabled if you
want any sort of system stability.
Fast R-W Turn Around
Leave it as Enabled for ‘faster’ performance.
System BIOS Cacheable
The setting of
Enabled
allows caching of the system BIOS ROM at
F000h-FFFFFh, resulting in better system performance. However, if
any program writes to this memory area, a system error may result.
Video BIOS Cacheable
The Setting
Enabled
allows caching of the video BIOS ROM at
C0000h-F7FFFh, resulting in better video performance. However, if
any program writes to this memory area, a system error may result.
Frame Buffer Size
The default setting of the frame buffer size is 8M.
CPU Latency Timer
The default setting for the CPU Latency Timer is
Enabled
.
AGP Aperture Size
The field sets aperture size of the graphics. The aperture is a portion of
the PCI memory address range dedicated for graphics memory address
space. Host cycles that hit the aperture range are forwarded to the AGP
without any translation. The default setting is
64M
.
OnChip USB
The default setting of this filed is Enabled to enable the USB function on
board.
OnChip Keyboard Support
Enable this if you are using a USB keyboard.
