BIOS Setup
3-21
AC’97 Audio
Auto
allows the mainboard to detect whether an audio device is used. If the
device is detected, the onboard AC’97 (Audio Codec’97) controller will be
enabled; if not, it is disabled. Disable the controller if you want to use other
controller cards to connect an audio device. Settings:
Auto
,
Disabled
.
AC’97 Modem
Auto
allows the mainboard to detect whether a modem is used. If a modem is
used, the onboard MC’97 (Modem Codec’97) controller will be enabled; if not,
it is disabled. Disable the controller if you want to use other controller cards to
connect to a modem. Settings:
Auto
,
Disabled
.
Floppy Controller
This is used to enable or disable the onboard Floppy controller.
Serial Port A/B
These items specify the base I/O port addresses of the onboard Serial Port 1
(COM A)/Serial Port 2 (COM B). Selecting
Auto
allows AMIBIOS to automati-
cally determine the correct base I/O port address. Settings:
Auto, 3F8/COM1
,
2F8/COM2
,
3E8/COM3
,
2E8/COM4
and
Disabled
.
Serial PortB Mode
This item sets the operation mode for Serial Port B. Settings:
Normal
,
1.6uS
,
3/16 Baud
and
ASKIR
(the last three operation modes are setting
options for IR function).
IR Duplex Mode
This field specifies a duplex value for the IR device connected to COM B.
Full-Duplex mode permits simultaneous two-direction transmission. Half-
Duplex mode permits transmission in one direction only at a time. Settings:
Half Duplex
and
Full Duplex
.
Option
Description
Auto
BIOS will automatically determine whether to enable the
onboard Floppy controller or not.
Enabled
Enables the onboard Floppy controller.
Disabled
Disables the onboard Floppy controller.
