MSI 975X PLATINUM User Guide - Page 62

BIOS Setup PNP/PCI Configurations This section describes configuring the PCI bus system and PnP (Plug & Play) feature. PCI, or Peripheral Component Interconnect, is a system which allows I/O devices to operate at speeds nearing the speed the CPU itself uses when communicating with its special components. This section covers some very technical items and it is strongly recommended that only experienced users should make any changes to the default settings. Init Display First This setting specifies which VGA card is your primary graphics adapter. Setting options are: [PCI Ex] The system initializes the PCI Express graphic first. If a PCI Express graphic card is not available, it will initialize the PCI graphic card. [PCI Slot] The system initializes the PCI Graphic card first. If a PCI Graphic card is not available, it will initialize the PCI Express graphic. PCI/VGA Palette Snoop W hen set to Enabled, multiple VGA devices operating on different buses can handle data from the CPU on each set of palette registers on every video device. Bit 5 of the command register in the PCI device configuration space is the VGA Palette Snoop bit (0 is disabled). For example, if there are two VGA devices in the computer (one PCI and one ISA): VGA Palette Snoop Bit Setting Action D is a b le d Data read or written by the CPU is only directed to the PCI VGA device's palette registers. Enabled Data read or written by the CPU is directed to both the PCI VGA device's palette registers and the ISA VGA device's palette registers, permitting the palette registers of both VGA devices to be identical. 3-19