Nvidia 754 specifications PCI Express related items, Interrupt requests are shared as shown below

BIOS

Resources Controlled By

Determines what controls system PNP/PCI resources. The default is Auto (ESCD). Manual: PNP Card’s resources are controlled manually. The “IRQ Resources”

field becomes available and you can set which IRQ-X and DMA-X are assigned to PCI and onboard devices.

Auto: BIOS assigns the interrupt resource automatically.

PCI/VGA Palette Snoop

This item is designed to overcome problems that may be caused by some nonstand- ard VGA cards.

Options: Enabled, Disabled.

*** PCI Express related items ***

Maximum Payload Size

Set maximum TLP payload size for the PCI Express devices. The unit is byte. Options: 128, 256, 512, 1024, 2048, 4096.

Interrupt requests are shared as shown below:

	INT A	INT B	INT C	INT D
PCI1	V
PCI2		V
PE1 (x1)				V
PE2 (x16)			V
PE3 (x1)		V
PE4 (x16)	V

IMPORTANT!

When using PCI cards on shared IRQ slots, make sure its drivers support “Shared IRQ”, or that the cards do not need IRQ assignments. IRQ conflicts between the two PCI groups will make the system unstable or cards inoperable.

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