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Computer Setup (Continued)
Heading
Advanced*
(continued)
*These options should be used by
advanced users only.
Support for Computer Setup options may vary depending on your specific hardware
configuration.
Computer Setup (F10) Utility Guide
Option
Power-On Options
(continued)
Onboard Devices
PCI Devices
Computer Setup (F10) Utility Guide
Description
•
I/O APIC Mode (enable/disable). Enabling
this feature will allow Microsoft Windows
Operating Systems to run optimally. This
feature must be disabled for certain
non-Microsoft Operating Systems to work
properly.
•
ACPI and USB Buffer @ Top of Memory
(enable/disable). Enabling this feature
places ACPI and USB memory buffers at
the top of memory. The advantage is that
some amount of memory below 1 MB is
freed up for use by option ROMs. The
disadvantage is that a popular memory
manager, HIMEM.SYS, does not work
properly when ACPI and USB buffers are
at the top of memory AND the system has
64 MB or less of RAM.
Allows you to set resources for or disable
onboard system devices (diskette controller,
serial port, or parallel port).
•
Lists currently installed PCI devices and
their IRQ settings.
•
Allows you to reconfigure IRQ settings for
these devices or to disable them entirely.
These settings have no effect under an
APIC-based operating system.
15
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