Ultra 440BX ATX Mainboard
AWARD BIOS SETUP
4-8
8 Bit I/O Recovery Time:
( default setting : “1” )
The recovery time is the length of time, measured in CPU clocks, which the
system will delay after the completion of an input/output request. This delay takes
place because the CPU is operating so much faster than the input/output bus that
the CPU must be delayed to allow for the completion of the I/O. This item allows
you to determine the recovery time allowed for 8 bit I/O. Choices are from NA, 1
to 8 CPU clocks
16 Bit I/O Recovery Time:
( default setting : “1” )
This item allows you to determine the recovery time allowed for 16 bit I/O.
Choices are from NA, 1 to 4 CPU clocks
Memory Hole At 15M-16M:
( default setting : “Disabled” )
In order to improve performance, certain space in memory can be reserved for ISA
cards. This memory must be mapped into the memory space below 16 MB.
Enabled
Memory hole supported.
Disabled
Memory hole not supported.
Passive Release:
( default setting: "Enabled" )
When Enabled, CPU to PCI bus accesses are allowed during passive release.
Otherwise, the arbiter only accepts another PCI master access to local DRAM..
Delayed Transaction:
( default setting: "Disabled" )
The chipset has an embedded 32-bit posted write buffer to support delay
transactions cycles. Select Enabled to support compliance with PCI specification
version 2.1..
The Choice: Enabled, Disabled.
AGP Aperture Size (MB) : (
default setting: 64MB )
There is the AGP slot on the board and which allows user to install the AGP display
card in the system. The AGP display card will use some of the system memory to
store 3D texture mapping data so that the video performance can be increased
tremendously. You may use this field to define the memory size which you prefer
to use with the AGP card. The memory size selectable in this field can be 4MB to
256MB.
