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Chapter 1
1 (COM A)/Serial Port 2 (COM B). Selecting Auto allows BIOS to automatically
determine the correct base I/O port address. Settings: Disabled, 3F8/IRQ4,
2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3, Auto. If you have ISA add-on card, the
suggested configuration is as the following:
If the ISA add-on card has
Onboard Serial port to be set at
COMl
COM2
COM3
COM4
PORTl
IRQ
PORT2
IRQ
(I/0:3F8H) (I/0:3F8H) (1/0:ЗЕ8Н; (1/0:2Е8Н;
PORTl
ASSIGNED
PORT2
ASSIGNED
У
У
V
•
DISABLED
X
DISABLED
X
V
•/
X
X
COM3
4
COM4
3
X
X
•/
•
COMl
4
COM2
3
•
X
X
•
COM2
3
COM3
4
X
У
•
X
COMl
4
COM4
3
•
у
•
X
COM4
3
DISABLED
X
•
V
X
•
COM3
4
DISABLED
X
•
X
•
•
COM2
3
DISABLED
X
X
у
•
•
COMl
4
DISABLED
X
X
X
X
X
COMl
4
COM2
3
у
X
X
X
COM2
3
COM3
4
X
•/
X
X
COMl
4
COM3
4
X
X
•
X
COMl
4
COM2
3
X
X
X
V
COMl
4
COM2
3
Note: To use the IR function, you need to enable the serial port 2.
UART2Mode
This setting allows you to specify the operation mode for serial port 2.
Setting options: IrDA, AS KIR, Nonnal.
HPSIR
IrDA-compliant Serial Infrared Port
ASKIR
Amplitude Shift Keyed Infrared Port
Standard
RS-232C Serial Port
IR Function Duplex
This setting controls the operating mode of IR transmission/reception.
Setting options: Full, Half. Under Full Duplex mode, synchronous, bi-
directional transmission/reception is allowed. Under Half Duplex mode,
only asynchronous, bi-directional transmission/reception is allowed.
2-18
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