Altos 500 Series User’s GuidePCI SlotsWhen you set the PCI IRQ Setting parameter to Auto, these parameters specify theauto-assigned interrupt for each of the PCI devices. If you set the PCI IRQ Settingparameter to Manual, you need to specify the interrupt that you want to assign foreach PCI device installed in your system.AGPThis item shows the assigned interrupt for the onboard accelerated graphics port(AGP) controller.PCI IRQ SharingSetting this parameter to Yes allows you to assign the same IRQ to two differentdevices. To disable the feature, select No.If there are no IRQs available to assign forthe remaining device function, werecommend that you enable this parameter.VGA Palette SnoopThis parameter permits you to use the palette snooping feature if you installedmore than one VGA card in the system.The VGA palette snoop function allows the control palette register (CPR) tomanage and update the VGA RAM DAC (Digital Analog Converter, a color datastorage) of each VGA card installed in the system. The snooping process lets theCPR send a signal to all the VGA cards so that they can update their individualRAM DACs. The signal goes through the cards continuously until all RAM DACdata has been updated. This allows the display of multiple images on the screen.Some VGA cards have required settings for thisfeature. Check your VGA card manual beforesetting this parameter.
