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BIOS SETUP
MB820 User’s Manual 39
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 Enabled
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
Onboard Serial Port 3 3E8H
Serial Port 3 Use IRQ IRQ5
Onboard Serial Port 4 Disabled
Serial Port 4 Use IRQ IRQ10
Chip Select Pin 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.
IDE DMA Transfer Access
Allows IDE transfer to be done in DMA mode
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.