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Video BIOS Cacheable:
Selecting Enabled allows caching of the video BIOS ROM at C0000h
to C7FFFh, resulting in better video performance. However, if any program writes to this
memory area, a system error may result.
Memory Hole At 15M-16M:
You can reserve this area of system memory for ISA adapter
ROM. When this area is reserved, it cannot be cached. The user information of peripherals that
need to use this area of system memory usually discusses their memory requirements.
CPU Latency Timer:
Selecting “Enable”, the CPU cycle will only be deferred after it has been
in a Snoop Stall for 31 clocks and another ADS# has arrived. Select “Disable”, the CPU cycle will
be deferred immediately after the GMCH receives with PCI specification version 2.1.
Delayed Transaction:
The chipset has an embedded 32-bit posted write buffer to support
delay transactions cycles. Select Enable to support compliance with PCI specification version
2.1.
AGP Graphic Aperture Size:
Select the size of the Accelerated Graphics Port (AGP) aperture.
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.
Power-Supply Type:
This option allows the user to set the Power Supply. The settings are
“AT”, “ATX”. The Default Setting is “AT”.
On Chip Video Window Size:
This option allows the user to set the on-chip video window
size for VGA driver use.
Summary of Contents for IAC-H668 Series
Page 4: ......
Page 7: ...Page 3 1 5 Board Layout...
Page 45: ...Page 41 Setp2 Setp3 Setp4 Click Next Click Yes Click Next...
Page 50: ...Page 46 Setp3 Setp4 Setp5 Double Click PCI Ethernet Control Click Update Driver Click Next...
Page 52: ...Page 48 Setp9 Setp10 Setp11 Click OK 2 Click OK 1 Put win98 CD ROM Driver Click OK...