ADLINK ReadyBoard 740 - Manual (Page 40)

28 BIOS Setup
Super IO Configuration
You can use this screen to select options for the Super IO settings.
Use the up and down < Arrow > keys to select an item. Use the
< + > and < - > keys to change the value of the selected option.
The settings are described on the following pages. The screen is
shown below.
Serial Port1~4 Address
This option enables/disables serial ports1~4. The base I/O port
address and Interrupt Request address are fixed as follows:
Port 1: 3F8/IRQ4, Port 2: 3E8/IRQ3, Port 3: 2F8/IRQ10, Port 4:
2E8/IRQ11.
Serial Port1~4 Function
This option sets serial ports 1~4 to RS-422/485 or RS-232
(default).
RS-485 Control for SP1~2
Set this value to enable RS-485 control on serial ports1~2.