Intel SG-81 - Manual (Page 45)

BIOS Setup 3-21
If you cannot get a legacy ISA (Industry Standard Architecture) expansion card to
work properly, you might be able to solve the problem by changing this item to
Manual, and then opening up the IRQ Resources submenu.
In the IRQ Resources submenu, if you assign an IRQ to Legacy ISA, then that
Interrupt Request Line is reserved for a legacy ISA expansion card. Press to
close the IRQ Resources submenu.
IRQ Resources
The submenu allows you to individually assign an interrupt type for interrupts IRQ-3
to IRQ-15.
In the IRQ Resources submenu, if you assign an IRQ to Legacy ISA, then that
Interrupt Request Line is reserved for a legacy ISA expansion card. Press to
close the IRQ Resources submenu.
In the Memory Resources submenu, use the first item Reserved Memory Base to set
the start address of the memory you want to reserve for the ISA expansion card. Use
the section item Reserved Memory Length to set the amount of reserved memory.
Press to close the Memory Resources submenu.
PCI/VGA Palette Snoop [Disabled]
This item is designed to overcome problems that can be caused by some non-standard
VGA cards. This board includes a built-in VGA system that does not require palette
snooping so you must leave this item disabled.
User’s Manual