American Megatrends Titan II User Manual page 41

Advanced Setup,
Continued
IRQ 3 through IRQ 15
These options specify the bus that the Interrupt request line in the option title can be used on. The settings are ISA
(the IRQ can only be used on the ISA bus) or PCI (the IRQ can only be used on the PCI bus). The Optimal and Fail-
Safe default settings are ISA, except for IRQ 5, IRQ 9, IRQ10, IRQ11, and IRQ15 where the Optimal default
settings are PCI.
Titan-II PCI Pentium EISA Motherboard User's Guide
Caution
If a PCI VGA adapter card is installed in the computer
and this card requires a free interrupt, you must select
the PCI setting for at least one of the above IRQ
options.
If the computer does not work after system boot, press
<Ins> during the boot process to load the BIOS Fail-
Safe default settings.
Important
If the Advanced Setup Mouse Support option is set to
Enabled, IRQ12 can only be used for the onboard PS/2
mouse and will not be available for ISA or PCI device.
To use IRQ12 on the ISA bus, set the Mouse Support
option to Disabled and set the IRQ 12 option to ISA.
To use IRQ12 on the PCI bus, set the Mouse Support
option to Disabled and set the IRQ 12 option to PCI.
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