Chapter 3: System BIOS Setup
This option sets the leadoff timings for system memory access. The settings are
11/7/3, 10/6/5, 11/7/4,
or
10/6/4.
The Optimal and Fail-Safe default settings are
11/7/3.
·
Memory Address Drive Strength
This option specifies the current strength (in milliamps) for system memory. The
settings are “
10mA, 10mA”, “10mA, 16mA”, “16mA, 10mA”,
or “
16mA, 16mA”.
The
Optimal default setting is
10mA, 16mA.
The Fail-Safe default setting is
16mA, 16mA.
·
Enhanced Paging Disable
Set this option to
Enabled
to enable enhanced paging. The settings are
Enabled
or
Disabled.
The Optimal and Fail-Safe default settings are
Disabled.
·
Memory Hole
This option allows the end user to specify the location of a memory hole for ISA card
with firm ware ROM. The settings are
Disabled, 512-640K, 14-16 MB,
or
15-16M
(from 15 MB to 16 MB). The Optimal and Fail-Safe default settings are
Disabled.
·
USB Function
Set this option to
Enabled
to enable the system BIOS USB (Universal Serial Bus)
functions. The settings are
Enabled
or
Disabled.
The Optimal and Fail-Safe default
settings are Disabled.
·
USB Keyboard/Mouse Legacy Support
Set this option to
Enabled
to provide support for older non-USB keyboard and
mouses. The settings are
Enabled
or
Disabled.
The Optimal and Fail-Safe default
settings are Dis
abled.
·
Memory Specification Notice
The problem with EDO RAM when looking in the future is that it hardly works with
any bus speed higher than 66MHz, which is already reached reached. As CPUs
demand higher bus speeds and the Cyrix 6x86 already needing 75MHz, it is not
recommended to use EDO Memory on the
AXT431
for system clock frequency of
above 66MHz or install SDRAM DIMMs memory which supports current Intel and
AMD CPUs (100~133MHz) require 66MHz system clock.
3.4 Power Management Setup
Summary of Contents for ATX431
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