MSI MS-9656 series - Manual (Page 32)

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MS-9656 Server Board
PCI Interrupt Request Routing
The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hardware lines
over which devices can send interrupt signals to the microprocessor. The PCI IRQ
pins are typically connected to the PCI bus pins as follows:
DEVICE Interrupt ID Select REQ / GNT
XGI Z7 PCI_PIRQ # 0 PCI_AD18
IT8213F PCI_PIRQ # 2 PCI_AD19 PCI_REQ# 2 / PCI_GNT# 2
PCI Slot 1 PCI_PIRQ # 0 PCI_AD20 PCI_REQ# 0 / PCI_GNT# 0
PCI_PIRQ # 1
PCI_PIRQ # 2
PCI_PIRQ # 3
PCI Slot 2 PCI_PIRQ # 3 PCI_AD21 PCI_REQ# 1 / PCI_GNT# 1
PCI_PIRQ # 0
PCI_PIRQ # 1
PCI_PIRQ # 2
PCI Slot 3 PCI_PIRQ # 2 PCI_AD22 PCI_REQ# 3 / PCI_GNT# 3
PCI_PIRQ # 3 or
PCI_PIRQ # 0 ARBITER_REQ# 1
PCI_PIRQ # 1 ARBITER_GNT# 1
PCI Slot 4 PCI_PIRQ # 1 PCI_AD23 ARBITER_REQ# 2
PCI_PIRQ # 2 &
PCI_PIRQ # 3 ARBITER_GNT# 2
PCI_PIRQ # 0