CyberResearch CPEN GX-333-X User Manual
Page 66
CPEx GX-333-X
CyberResearch
®
CPU Cards
64
©Copyright 2007 CyberResearch, Inc.
PIO means Programmed Input/Output. Instead of constantly issuing BIOS commands to facilitate
I/O transfers to and from the hard disk drives, the PIO mode allows the BIOS to issue I/O
requests and let CPU and IDE controller to fulfill the requests. Four modes from 0 to 4 are
supported.
1.
IDE Primary Master PIO
2.
IDE Primary Slave PIO
Î
Auto (D
EFAULT
) Allows the computer to select the correct mode
Î 0
PIO mode 0 selected with a maximum transfer rate of 3.3MBps
1
PIO mode 1 selected with a maximum transfer rate of 5.2MBps
2
PIO mode 2 selected with a maximum transfer rate of 8.3MBps
3
PIO mode 3 selected with a maximum transfer rate of
11.1MBps
4
PIO mode 4 selected with a maximum transfer rate of
16.6MBps
Î
IDE Primary Master/Slave UDMA [Auto]
The Ultra DMA (UDMA) mode for the following HDDs can all be selected.
1.
IDE Primary Master UDMA
2.
IDE Primary Slave UDMA
3.
IDE Secondary Master UDMA
4.
IDE Secondary Slave UDMA
Î Auto
(D
EFAULT
)
Allows the computer to select the correct UDMA
Î Disabled
Disables the UDMA for the HDD device
Î
IDE DMA transfer access [Enabled]
The IDE DMA transfer access option allows you to determine whether or not the IDE device
installed in the system will have a DMA device.
Î Disabled
The IDE HDD installed in the system will not have DMA
transfer access
Î Enabled
(D
EFAULT
)
The IDE HDD installed in the system will have DMA
transfer access
Î
IDE HDD Block Mode [Enabled]
The IDE HDD Block Mode option should only be enabled if your IDE HDD device supports block
mode. Please refer to the documentation that came with your IDE HDD device to check the
compatibility.
Î Disabled
The BIOS will not detect block data transfers.
Î Enabled
(D
EFAULT
)
The optimal number of block read/writes per sector the
drive can support will be automatically detected.
Î
Onboard FDC Controller [Enabled]
The Onboard FDC Controller option allows you to enable or disable the Floppy Drive controller.
.
Î
Onboard Serial Port # [Auto]