Aaeon PCM-6892 Manual page 67

Onboard FDD Controller
Select Enabled if your system has a floppy disk controller (FDC)
installed on the system board and you wish to use it. If you install
an add-in FDC or the system has no floppy drive, select Disabled in
this field.
The choices: Disabled, Enabled.
Onboard Serial Ports (1, 2)
Normally, the boards' I/O chips will occupy a certain portion of
memory space. For each I/O device the computer provides an
I/O address. The more devices attached the more address needed
to organize the memory storage areas. If all the I/O devices were
run through the same address, your devices would come to a near
halt. Also the corresponding interrupt needs to be selected.
The choices: Disabled, 3F8/IRQ4, 2F8/IRQ3, 3E8/IRQ4, 2E8/
IRQ3.
UART 2 Mode
If you don't disable Onboard Serial Port 2, you will have to select an
operating mode for the second serial port:
Standard: RS-232C serial port
HPSIR: IrDA-compliant serial infrared port
ASKIR: Amplitude shift keyed infrared port
If you select HPSIR or ASKIR, you have to set the following two
functions.
IR Function Duplex
Select the value required by the IR device connected to the IR port.
Full-duplex mode permits simultaneous two-direction transmission.
Half-duplex mode permits transmission in one direction only at a
time.
The choices: Full, Half.
Chapter 3 Award BIOS Setup 57