18
L i f e B o o k C S e r i e s B I O S
IRQ Reservation Submenu of the PCI Configuration Submenu
The IRQ Reservation submenu allows the user to mark
various IRQs as reserved for use by legacy ISA devices.
When an IRQ is reserved, the BIOS does not use it for
embedded PCI or ISA devices.
Figure 10. IRQ Reservation Submenu
C A U T I O N
Only IRQ’s 9, 10, & 11 can be reserved without conflict.
Table 10: Fields, Options and Defaults for the IRQ Reservation Submenu of the
PCI Configuration Submenu of the Advanced Menu
Menu Field
Options
Default
Description
IRQ 3:
n
Available
n
Reserved
[Available]
Reserves IRQ 3. If Reserved is selected, the BIOS reserves IRQ 3 for
use by legacy ISA devices and does not use it for embedded PCI or
ISA devices. IRQ 3 is removed from the IRQ bitmap in the PCI IRQ
routing table.
IRQ 4:
n
Available
n
Reserved
[Available]
Reserves IRQ 4.
IRQ 5:
n
Available
n
Reserved
[Available]
Reserves IRQ 5.
IRQ 7:
n
Available
n
Reserved
[Available]
Reserves IRQ 7.
F1
Help
ESC
Exit
Select Item
Select Menu
-/Space
Enter
F9
Setup Defaults
F10
Save and Exit
Change Values
Select Sub-Menu
▲
Main
Advanced
Security Power Savings Exit
Item Specific Help
Reserve the specified
IRQ for use by legacy
ISA devices.
IRQ Reservation
PhoenixBIOS Setup Utility
IRQ 3:
[
Available
]
IRQ 4:
[Available]
IRQ 5:
[Available]
IRQ 7:
[Available]
IRQ 9:
[Available]
IRQ 10:
[Available]
IRQ 11:
[Available]
IRQ 15:
[Available]
F1
Help
ESC
Exit
Select Item
Select Menu
-/Space
Enter
F9
Setup Defaults
F10
Save and Exit
Change Values
Select Sub-Menu
▲
Main
Advanced
Security Power Savings Exit
Item Specific Help
Reserve the specified
IRQ for use by legacy
ISA devices.
IRQ Reservation
PhoenixBIOS Setup Utility
IRQ 3:
[
Available
]
IRQ 4:
[Available]
IRQ 5:
[Available]
IRQ 7:
[Available]
IRQ 9:
[Available]
IRQ 10:
[Available]
IRQ 11:
[Available]
IRQ 15:
[Available]
