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The four IDE PIO (Programmed Input/Output) fields let you set a PIO mode (0-4) for each of the four 
IDE devices that the onboard IDE interface supports.  Modes 0 through 4 provide successively 
increased performance. In Auto mode, the system automatically determines the best mode for each 
device.  The settings are: Auto, Mode 0, Mode 1, Mode 2, Mode 3, Mode 4. 
Primary/Secondary Master/Slave UltraDMA 
Ultra DMA/33 implementation is possible only if your IDE hard drive supports it and the operating 
environment includes a DMA driver (Windows 95 OSR2 or a third-party IDE bus master driver).  If 
your hard drive and your system software both support Ultra DMA/33 and Ultra DMA/66, select Auto 
to enable BIOS support.  The settings are: Auto, Disabled. 
IDE HDD Block Mode 
Block mode is also called block transfer, multiple commands, or multiple sector read/write.  If your 
IDE hard drive supports block mode (most new drives do), select Enabled for automatic detection of 
the optimal number of block read/writes per sector the drive can support.  The settings are: Enabled, 
Disabled. 
 
3-7-2   OnChip Device Function 
CMOS Setup Utility – Copyright(C) 1984-2003 Award Software 
OnChip Device Function 
 
Item Help 
 
    AC97 Audio Device              Enabled 
    Game Port Address              201 
    Midi Port Address 
    Midi Port IRQ                  10 
    AC97 Modem Device              Enabled 
    USB Device Function            Enabled 
    USB Keyboard Legacy Support    Disabled 
    Onboard LAN Boot ROM           Disabled 
    ETHERNET Address ID Input      Press Enter 
 
    SiS180 SATA Controller         Enabled 
 
  Menu Level >> 
 
↑↓→←
 Move Enter:Select +/-/PU/PD:Value F10:Save ESC:Exit  F1:General Help 
F5:Previous Values   F6:Optimized Defaults    F7:Standard Defaults 
AC97 Audio Device 
This will determine which on Board  AC97 Codec  Function will use.  The settings are: Enabled, 
Disabled. 
Game Port Address/Midi Port Address 
This will determine which Address the Game Port/Midi Port will use. 
USB Device Function    
Select Enabled if your system contains a Universal Serial Bus (USB) controller and you have a 
USB peripherals.  The settings are: Enabled, Disabled. 
USB Keyboard  Legacy Support 
Select Enabled if your system contains a Universal Serial Bus (USB) controller and you have a 
USB keyboard.  The settings are: Enabled, Disabled. 
SiS180 SATA Controller 
The settings are: Enabled and Disabled 
 
3-7-3   Onboard Super IO Function