Avalue Technology ECM-945GSE User Manual page 64

ECM-945GSE
channels. Select Enabled to activate the primary IDE interface. Select Disabled to
deactivate this interface.
Item
IDE HDD Block Mode
IDE DMA transfer access
On-Chip Primary/Secondary
PCI IDE
IDE Primary Master PIO
IDE Primary Slave PIO
IDE Secondary Master PIO
IDE Secondary Slave PIO
IDE Primary Master UDMA
IDE Primary Slave UDMA
IDE Secondary Master UDMA
IDE Secondary Slave UDMA
64 ECM-945GSE User's Manual
Options
Speeds up HDD access by transferring data
from multiple sectors at once instead of using
the old single sector transfer mode if the HDD
Enabled supports block transfers and configure the
Disabled proper block transfer settings for it. Up to 64KB
of data can be transferred per interrupt with IDE
HDD Block Mode enabled. (Virtually all HDDs
now support block transfers.)
It allows you to enable or disable DMA (Direct
Memory Access) support for all IDE devices. If
you disable this BIOS feature, the BIOS will
disable DMA transfers for all IDE drives. They
Enabled will revert to PIO mode transfers. If you enable
Disabled this BIOS feature, the BIOS will enable DMA
transfers for all IDE drives. The proper DMA
mode will be detected at boot-up. If the drive
does not support DMA transfers, then it will use
PIO mode instead.
The integrated peripheral controller contains an
Enabled IDE interface with support for two IDE channels.
Disabled It allows you to activate each channel
separately.
The IDE PIO (Programmed Input/Output) fields
Auto
let you set a PIO mode (0-4) for each of the four
Mode 0
IDE devices that the onboard IDE interface
Mode 1
supports.
Mode 2
successively increased performance. In Auto
Mode 3
mode, the system automatically determines the
Mode 4
best mode for each device.
Ultra DMA implementation is possible only if
your IDE hard drive supports it and the
operating environment includes a DMA driver
Auto
(Windows 95 OSR2 or a third-party IDE bus
Disabled
master driver). If the hard drive and the system
software both support Ultra DMA, select Auto to
enable BIOS support.
Description
Modes 0 through 4 provide