abit AN7 User Manual

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3-12 
Chapter 3 
3-5. Integrated 
Peripherals 
 
OnChip IDE Device: 
Click <Enter> key to enter its submenu: 
 
OnChip IDE1 Controller: 
This item allows you to enable or disable the primary and secondary IDE controller. Select [Disabled] if 
you want to add a different hard drive controller. 
  Master/Slave Drive PIO Mode 
The PIO (Programmed Input/Output) mode allows the BIOS to tell the controller what it wants and then 
let the controller and the CPU perform the complete task, rather than having the BIOS issue a series of 
commands to affect a transfer to or from the disk drive. 
[Auto]: The BIOS will select the best available mode after checking your disk drive. 
[Mode 0-4]: You can select a mode that matches your disk drive’s timing. Do not use the wrong setting 
or you will have drive errors. 
  Master/Slave Drive Ultra DMA 
This item allows you to set the Ultra DMA in use. 
[Auto]: The BIOS will select the best available option after checking your hard drive or CD-ROM. 
AN7