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Chapter 3 AWARD BIOS USER'S GUIDE
The system has an On-board Super I/O chipset with 2 serial ports.
The On-board serial ports can be selected as:
Note: Because the ISA Bus Interrupt accepts low to high edge trigger, the
interrupt request line can not be shared by multiple sources. If an off-
board ISA add-on card with a serial port the user may have to disable the
on-board serial port because it will conflict with IRQ request line for the
off-board serial port.
UART 2
MODE:
the
IR
IR Function
Duplex:
Disabled
3F8/IRQ4
2F8/IRQ3
3E8/IRQ4
2E8/IRQ3
Standard/ASKIR/HPSIR(i.e. I
The system's built-in IR (Infra Red) is on
on-board Super I/O chipset and is shares
serial port 2 with UART 2. Only one option
can be selected for serial port 2, either the
or UART. Selecting the IR mode will
prompt the following message:
Half/Full
Users can choose between operating
the IR in Half duplex or Full duplex
mode. Half duplex designates one IR
as a receiver and one as a transmitter
simultaneously. Full duplex mode
designates that the two IRs receive
and transmit data together
simultaneously.
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COMM1 uses IRQ4
COMM2 uses IRQ3
COMM3 uses IRQ4
COMM4 uses IRQ3
D
R
)
A
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