Super io configuration, Serial port1~4 address, Serial port1~4 function – ADLINK ReadyBoard 740 User Manual

Page 40: Rs-485 control for sp1~2

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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.