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.
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