User`s guide

Installing Expansion Boards
8-3
NOTE: It is recommended that you run the SCU after you
install a PCI video expansion board to reallocate the
onboard video resources.
• The SCU automatically scans the PCI bus and will assign an IRQ
and I/O port address for any new PCI board installed in the server.
Configuring Your EISA/PCI Expansion
Boards Using the SCU
When installing EISA and PCI expansion boards in your server, the SCU
must be run to configure these boards.
For EISA expansion boards, the SCU will allow you to review the default
IRQ, I/O port address, and ROM address for the expansion boards, and
modify them. These values are saved in the SCI file and can be loaded
using that file when the SCU is rerun.
For PCI expansion boards, the SCU will autodetect the boards and assign
IRQ and I/O port addresses to these boards. Each PCI slot can have up to
4 IRQs assigned to it for use by the controller. ROM addresses for the PCI
expansion boards will be assigned based on the PCI scan order and the
available addresses not already assigned to ISA or EISA expansion
boards. The SCU can be used
to edit the ROM addresses of any controllers in the EISA bus or PCI
busses 0 and 1.