MSI MEGA 180 Uživatelská příručka stáhnout pdf (Strana 73)

4-17

Setting BIOS Function

Primary/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. The settings

are: Auto, Mode 0, Mode 1, Mode 2, Mode 3, Mode 4.

Primary/Secondary Master/Slave UDMA

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, Ultra DMA/66 and Ultra DMA/100 select Auto to

enable BIOS support. The settings are: Auto, Disabled.

OnChip IDE Channel 1

The chipset contains a PCI IDE interface with support for channel1. Select En-

abled to activate the IDE interface. Select Disabled to deactivate the interface,

if you install a primary and/or secondary add-in IDE interface.

IDE Prefetch Mode

The onboard IDE drive interfaces support IDE prefetching, for faster drive accesses.

When you install a primary and/or secondary add-in IDE interface, set this op-

tion to Disabled if the interface does not support prefetching.

IDE DMA Transfer Access

This item is used to enable or disable the DMA transfer function of the IDE Hard

Drive. The settings are: Enabled, 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),

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MSI MEGA 180 Uživatelská příručka Strana 73