Intel MB875 - Manual (Page 36)

BIOS SETUP
32 MB890 User’s Manual
Phoenix - AwardBIOS CMOS Setup Utility
SuperIO Device
Onboard FDC Controller Enabled ITEM HELP
Onboard Serial Port 1 3F8/IRQ4 Menu Level >
Onboard Serial Port 2 2F8/IRQ3
UART Mode Select Normal
RxD , TxD Active Hi, Lo
IR Transmission Delay Disabled
UR2 Duplex Mode Half
Use IR Pins IR-Rx2Tx2
Onboard Parallel Port 378/IRQ7
Parallel Port Mode SPP
EPP Mode Select EPP1.7
ECP Mode Use DMA 3
OnChip Primary/Secondary PCI IDE
The integrated peripheral controller contains an IDE interface with
support for two IDE channels. Select Enabled to activate each channel
separately.
IDE Primary/Secondary Master/Slave PIO
These fields allow your system hard disk controller to work faster.
Rather than have the BIOS issue a series of commands that transfer to or
from the disk drive, PIO (Programmed Input/Output) allows the BIOS to
communicate with the controller and CPU directly.
The system supports five modes, numbered from 0 (default) to 4, which
primarily differ in timing. When Auto is selected, the BIOS will select
the best available mode.
IDE Primary/Secondary Master/Slave UDMA
These fields allow your system to improve disk I/O throughput to
33Mb/sec with the Ultra DMA/33 feature. The options are Auto and
Disabled.
IDE HDD Block Mode
This field allows your hard disk controller to use the fast block mode to
transfer data to and from your hard disk drive.
USB Controller
The options for this field are Enabled and Disabled. By default, this field
is set to Enabled.