Pci interrupt request routing – MSI MS-6380 User Manual
Page 44

Chapter 2
2-28
Order 1 Order 2 Order 3 Order 4
AGP
INT A# INT B#
PCI Slot 1 INT A# INT B# INT C# INT D#
PCI Slot 2 INT B# INT C# INT D# INT A#
PCI Slot 3 INT C# INT D# INT A# INT B#
PCI Slot 4 INT D# INT A# INT B# INT C#
PCI Slot 5 INT A# INT B# INT C# INT D#
The mainboard supports PCI Slot 1~5 Bus Master.
PCI Interrupt Request Routing
The IRQ, abbreviation of interrupt request line and pronounced I-R-Q,
are hardware lines over which devices can send interrupt signals to the
microprocessor. To install a PCI expansion card on a PCI shared slot, you
must make sure the card’s driver supports “IRQ shared” function or there is
no need to assign an IRQ to the device.
The “AGP/PCI” IRQ pins are typically connected to the PCI bus INTA#-
INTD# pins as follows: