2-19
Hardware Setup
Slots
PCI (Peripheral Component Interconnect) Slots
The motherboard provides one 32-bit Master PCI slot, two 64-bit PCI-X slots,
and one PCI Express x8 slot.
PCIE1:
PCI Express x8 slot
PCI1:
PCI-32 slot from Hance Rapids,
33MHz, 3.3V device only
PCIX2:
PCIX-64 slot, 66MHz,
3.3V device only
MSI Reminds You...
When adding or removing expansion cards, make sure that you unplug
the power supply first. Meanwhile, read the documentation for the ex-
pansion card to configure any necessary hardware or software set-
tings for the expansion card, such as jumpers, switches or BIOS
configuration.
PCI Interrupt Request Routing
The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hard-
ware 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:
PCIX1:
PCIX-64 slot, 66MHz,
3.3V device only
PCI33-32 Routing (From Hance Rapids)
PCI DEVICE
IDSEL
INT A
INT B
INT C
INT D
REQ
GNT
PCI Slot1
AD20
PIRQ#A
PIRQ#B
PIRQ#3
PIRQ#4
REQ#0
GNT#0
ATI VGA
AD21
PIRQ#C
REQ#1
GNT#1
BCM 5705
AD22
PIRQ#D
REQ#2
GNT#2
Primary IDE Interrupt: IRQ14 (For ICH-HR)
Secondary IDE Interrupt: IRQ15 (For ICH-HR)
PCIX-64 Routing (From Hance Rapids)
PCI DEVICE
IDSEL
INT A
INT B
INT C
INT D
REQ
GNT
PCIX-64 Slot1
PXAD17
PXIRQ#0
PXIRQ#1
PXIRQ#2
PXIRQ#3
PXREQ#0
PXGNT#0
PCIX-64 Slot2
PXAD18
PXIRQ#1
PXIRQ#2
PXIRQ#3
PXIRQ#0
PXREQ#1
PXGNT#1
AIC-7901 SCSI
PXAD19
PXIRQ#2
PXREQ#2
PXGNT#2
