Contec SPI-8451-LLVA Manual Do Utilizador

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8. BIOS Setup 
 
 
 
90 
SPI-8451-LLVA, SPI-8452-LLVA, SPI-8451-LVA 
Description 
Choice 
IDE Primary Master/Slave UDMA 
UDMA (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/s.    When you select Auto in the 
four IDE UDMA fields (for each of up to four IDE 
devices that the internal PCI IDE interface supports), 
the system automatically determines the optimal data 
transfer rate for each IDE device. 
On-Chip 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 Secondary Master/Slave PIO 
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. 
IDE Secondary Master/Slave UDMA 
UDMA (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/s.    When you select Auto in the 
four IDE UDMA fields (for each of up to four IDE 
devices that the internal PCI IDE interface supports), 
the system automatically determines the optimal data 
transfer rate for each IDE device. 
USB Controller 
Select Enabled if your system contains a Universal 
Serial Bus (USB) controller and you have USB 
peripherals.