Pnp/Pci Options - Acer Power SC Service Manual

PnP/PCI Options

The PnP/PCI Options menu allows you to specify the settings for your PCI devices. Selecting this option
displays the following screen:
PCI IRQ Setting ..................................................... [Auto]
PCI Slot 1 .....................................[--] [--] [--] [--]
PCI Slot 2 .....................................[--] [--] [--] [--]
PCI Slot 3 .....................................[--] [--] [--] [--]
PCI IRQ Sharing..................................................... [Yes]
VGA Palette Snoop................................................. [Disabled]
Graphics Aperture Size........................................... [64 ] MB
Plug and Play OS.................................................... [Yes]
Reset Resource Assignments.................................. [No ]
The following table describes the parameters found in this sub-menu. Settings in boldface are the default and
suggested settings.
Parameter
PCI IRQ Setting
PCI Slot 1 / 2 / 3
PCI IRQ Sharing
VGA Palette Snoop
Graphics Aperture Size
Chapter 2
PnP/PCI Options
INTA INTB INTC INTD
Description
Allows you to automatically or manually configure
the Plug-and-Play (PnP) devices installed in your
system. Refer to your device manual for technical
information about the PCI card.
Allows you to manually assign an interrupt for each
PCI device installed in your system. When the PCI
IRQ Settings is set to Auto, BIOS automatically
assigns the available IRQs to the PCI devices.
Allows you to assign the same IRQ to two different
devices.
Enables the palette snooping feature (if you installed
more than one VGA card in the system) allowing
the control palette register (CPR) to manage and
update the VGA RAM DAC (Digital Analog
Converter, a color data storage) of each VGA card
installed in the system. The snooping process lets
the CPR send a signal to all the VGA cards so that
they can update their individual RAM DACs. The
signal goes through the cards continuously until all
RAM DACs data has been updated. This allows the
display of multiple images on the screen. Some
VGA cards have required settings for this feature.
Check your VGA card manual before setting this
parameter.
This parameter determines the effective size of the
graphics aperture. Graphics aperture is the address
range that the AGP video and the CPU use to
manage graphical objects.
Options
Auto or Manual
Yes or No
Enabled or Disabled
The lowest setting is 8 MB and the
highest is 256 MB.
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