System BIOS and Utilities 4-13
IRQ Reservation Submenu
This option lets you reserve specific IRQs (interrupt
requests) for use by legacy ISA devices. To do so,
highlight this field, then press the
Enter
key. Use the
arrow (cursor) keys to highlight the specified IRQ, then
press
Enter
. Select “Available” (default) or “Reserved”
with the arrow keys, then press
Enter
to change the
setting.
!
WARNING
An asterisk symbol appearing next to an option
indicates that the selected IRQ is set to conflict with
another device,
To return to the Advanced Menu, press the
Esc
key
twice.
Peripheral Configuration Submenu
This submenu can be used to configure your system’s ports
or peripheral devices. To enter the submenu, highlight this
field, then press the
Enter
key on your keyboard. The
following options appear:
Serial Port A/Serial Port B
These options let you configure your system’s Serial
Port A or Serial Port B. You can choose “Auto”,
“Enabled” or “Disabled.” The “Auto” setting causes the
Setup program to assign the first free COM port (e.g.,
COM 1 3F8h, IRQ4 or COM2, 2F8h, IRQ3). Note that
if you set a specific serial port address, it does not
appear in the list of options for the other serial port.