Fujitsu D2519 Technical Manua - Page 22
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PCI bus
PCI, PCI Express interrupts
Each device connected to a PCI bus or PCI Express can use up to four interrupt
signals depending on the functionality.
PCI and PCI-X buses use four lines named INTA to INTD, typically connected
to all devices on the bus in order to periodically balance interrupt load. An
interrupt signal may thereby be used simultaneously by multiple devices
(interrupt sharing).
PCI Express devices send their interrupts through messages. This avoids
restrictions in wiring.
The following interrupt signals are used in the system:
Slot/device
VGA
LAN 1
LAN 2
Slot 7
Slot 6
Slot 5
Slot 4
Slot 3
Slot 2
Slot 1
I
Slot 1 is the preferred slot for the HDD controller (bootable).
Assignment of the PCI interrupts
If you select Auto in the BIOS setup, the interrupts are assigned automatically
and no further settings are required.
22
Property
Interrupt signal
iRMC graphic
Int A
BCM5708
Int B
BCM5708
Int C
PCIe x4
Int A, B, C, D
PCIe x4
Int A, B, C, D
PCIe x4
Int A, B, C, D
PCI (133 MHz) Int A, B, C, D
PCIe x4
Int A, B, C, D
PCIe x4
Int B, C, D, A
PCIe x4
Int A, B, C, D
Technical Manual
Features
D2519 (RX300 S4)