CPEx GX-333-X

CyberResearch® CPU Cards

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 (DEFAULT)

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

ÎIDE 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

(DEFAULT) Allows the computer to select the correct UDMA

Î

Disabled

Disables the UDMA for the HDD device

ÎIDE 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

(DEFAULT) The IDE HDD installed in the system will have DMA

 

 

transfer access

ÎIDE 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

(DEFAULT) The optimal number of block read/writes per sector the

 

 

drive can support will be automatically detected.

ÎOnboard FDC Controller [Enabled]

The Onboard FDC Controller option allows you to enable or disable the Floppy Drive controller.

.

ÎOnboard Serial Port # [Auto]

64

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