Assigning Irqs; Advanced - Digital Equipment Digital Server 3220 Series System Reference Manual

Server Software and Utilities

Assigning IRQs

The following information is important for managing server IRQ assignments.
The default setting for PCI expansion boards is Auto Select, which automatically
assigns IRQs to PCI expansion boards. If you have ISA expansion boards or you
wish to manually control PCI IRQ assignments, you must do the following to assign
IRQs to expansion slots.
1. Reboot the server and press <F2> when the DIGITAL logo screen appears.
2. Select Advanced at the top of the screen menu.
3. Select PCI Configuration. The following table shows the menu
selections.

Advanced

Menu Fields
PCI Configuration: [submenu]
PCI IRQ line #
PCI/PNP ISA UMB Region Exclusion
PCI/PNP ISA IRQ Resource Exclusion
(1)
Factory default
2-8
Settings
Disabled
(1)
Auto select
3
4
5
7
9
10
11
12
14
15
Comments
Disables the specific IRQ Line number.
Automatically assigns IRQs to PCI slots.
Select a number to assign to the PCI IRQ line. If the
IRQ number is already in use, an asterick (*) appears
to the left of the line.
Use this selection to reserve a specific block of upper
memory for ISA adapters. Press [Enter] to display
memory addresses available.
Use this selection to reserve IRQ numbers for ISA
adapters. Press [Enter] to display IRQs.