Pci Bus Resources; Pci Slots; Isa-Irq Assignment Of The Pci Interrupts - Fujitsu D1571 Handbuch

PCI bus resources

PCI slots

The following table shows an overview of the PCI slots on the riser card:
PCI slot 64bit/32bit
1 64 bit
2 64 bit

ISA-IRQ assignment of the PCI interrupts

This assignment is only valid for non-Plug&Play operating systems (e.g. DOS).
On the chipset the inputs PX_IRQ#0 to PX_IRQ#3, PIRQ#A and PIRQ#B are used (see table
below). In the BIOS setup different ISA-IRQs can only be assigned to PIRQ#A and PIRQ#B.
PX_IRQ#0 to PX_IRQ#3 are determined to the ISA-IRQ9 by the chip set. The interrupt of LAN A is
transferred via a message protocol and is determined to ISA-IRQ11.
If you select Auto in the BIOS setup, the interrupts are assigned automatically and no further
settings are required.
Multifunctional PCI boards or boards with an integrated PCI-to-PCI bridge can use several PCI
interrupts (INTA#, INTB#, INTC#, INTD#). Monofunctional PCI boards (default) only use one PCI
interrupt (INTA#) per PCI slot.
The PCI interrupts INTA#, INTB#, INTC# and INTD# are available for each PCI slot, however only 2
are routed further for PCI slot 5, as A and C as well as B and D are interrelated.
The same interrupt can be assigned simultaneously to several PCI boards. You should avoid this
condition due to reduced performance.
If you use a setting other than Auto, the Plug&Play functionality of the system BIOS for the
corresponding PCI boards is deactivated.
The PCI interrupts are assigned automatically in accordance with the Plug&Play
Auto
guidelines.
No ISA interrupt is assigned to the PCI interrupt.
Disabled
3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15
The selected ISA interrupt is assigned to the PCI interrupt. You may not select an
ISA interrupt that is used by a component on the system board (e.g. controller) or an
ISA board.
Slot 1
Slot 2, low-profile
SATA RAID controller
(optional)
Onboard LANB (82541EI)
Onboard LANA (82547EI)
VGA
A..D = Interrupt output of the PCI controller
PIRQ#x and PX_IRQ#x refer to the interrupt inputs of the LSI SATA Software RAIDs south bridge.
A26361-D1571-Z120-1-7419, edition 2
Frequency (MHz)
66 64 bit PCI bus slot, low-profile, 175 mm
66 64 bit PCI bus slot, maximum length: 315 mm
A B
PX_IRQ#0 PX_IRQ#1
PX_IRQ#1 PX_IRQ#2
PX_IRQ#2 -
PIRQ#B -
Interrupts of LANA are transferred via a message protocol
PIRQ#A -
Features
Description
C D
PX_IRQ#2 PX_IRQ#3
PX_IRQ#3 PX_IRQ#0
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