Abit AB-BF6, Manual

Page: 53 / 106

Introduction of the BIOS 3-25
User’s Manual
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Master/Slave Drive Ultra DMA:
Two options are available: Auto and Disabled. The default setting is Auto . Ultra DMA is a
DMA data transfer protocol that utilizes ATA commands and the ATA bus to allow DMA
commands to transfer data at a maximum burst rate of 33 MB/sec.
Ultra DMA/33 or Ultra DMA/66 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).
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Auto: If your hard drive and your system software both support Ultra DMA/33, select
Auto to enable BIOS support. For Ultra DMA/66 devices, please refer the
requirements mentioned in page 2-18. (Default setting)
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Disabled: If you encounter a problem in using Ultra DMA devices, you can try to disable
this item.
Onboard IDE-2 Controller:
Description is same as the Onboard IDE-1 Controller.
USB Keyboard Support:
Two options are available: Enabled and Disabled. The default setting is Disabled. If your
system contains a USB keyboard, set it to Enabled .
Init Display First
This item allows you to decide to active whether PCI slot or AGP slot VGA first.
Ultra DMA-66 IDE Controller
This item is only for the ABIT’s BE6-II motherboard. Please leave it on the default setting.
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 default setting is Enabled.