Adding pci express cards, Adding pci cards, Pci bus interrupts - selecting correct pci slot – FUJITSU RELIABILITY D1859 User Manual
Page 29: Adding pci express cards adding pci cards
Add-on modules / Upgrading
D1859 (Econel 50)
23
Adding PCI Express cards
The PCI Express x8 slot is intended for graphics cards, and the PCI Express x1 slot for
PCI Express x1 cards.
Adding PCI cards
Technical data:
32 bit / 33 MHz PCI slots
3.3 V supply voltage (PCI 2.3 compliant)
3.3 V auxiliary voltage
PCI bus interrupts - Selecting correct PCI slot
i
To achieve optimum stability, performance and compatibility, avoid the multiple use of ISA
IRQs or PCI IRQ Lines (IRQ sharing). Should IRQ sharing be unavoidable, then all
involved devices and their drivers must support IRQ sharing.
PCI IRQ Lines connect PCI/PCI Express slots and onboard components to the interrupt controller.
IRQ Lines are permanently wired on the system board.
Which ISA IRQs are assigned to the PCI IRQ Lines is normally automatically specified by the BIOS
(see description in "BIOS Setup").
Monofunctional expansions cards:
PCI/PCI Express expansion cards require a maximum of one interrupt, which is called the PCI
interrupt INT A. Expansion cards that do not require an interrupt can be installed in any desired slot.