Acer Veriton 3000 Veriton 3000 Service Guide - Page 73
Plug and Play OS, PCI IRQ Set
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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 Set PnP/PCI Options Auto] INTA PCI Slot 1 PCI Slot 2 11] INTB [11] [10] INTC [10] [03] INTD [03] [--] PCI IRQ Sha 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 inboldface are the default and suggested settings . Parameter PCI IRQ Setting PCI Slot 1 / 2 PCI IRQ Sharing VGA Palette Snoop Graphics Aperture Size Plug and Play OS Description Options 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. Auto or Manual 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 Yes or No 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 car manual before setting this parameter. Enabled or Disabled 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. The lowest setting is 4 MB and the highest is 256 MB. Set to Yes if the computer is running on Win95/ Win98 or Win2000. For any other OS, set to No. Yes or No Chapter 2 41