Kontron PCI-953, Руководство пользователя

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Advanced Menu 4-27 PCI-953 Single Board Computer User’s Guide
BIOS Setup
2F8/IRQ3*
Set this value to allow the serial port to use 2F8 as its I/O port
address and IRQ 3 for the interrupt address. This is the default
setting. The majority of serial port 2 or COM2 ports on computer
systems use IRQ3 and I/O Port 2F8 as the standard setting. The most
common serial device connected to this port is an external modem.
If the system will not use an external modem, set this port to
Disabled.
Note: Most internal modems require the use of the second COM port
and use 3F8 as its I/O port address and IRQ 4 for its interrupt address.
This requires that the Serial Port2 Address be set to Disabled or
another base I/O port address and Interrupt Request address.
3E8/IRQ4
Set this value to allow the serial port to use 3E8 as its I/O port
address and IRQ 4 for the interrupt address. If the system will not use
a serial device, it is best to set this port to Disabled.
2E8/IRQ3
Set this value to allow the serial port to use 2E8 as its I/O port
address and IRQ 3 for the interrupt address. If the system will not use
a serial device, it is best to set this port to Disabled.