DFI G7B630-B - Manual (Page 82)

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BIOS Setup
IR Transmission Delay
If this field is Enabled, transmission of data will be slower. This is
recommended when you encounter transmission problem with your
device. The options are: Enabled and Disabled.
UR2 Duplex Mode
Half Data is completely transmitted before receiving data.
Full Transmits and receives data simultaneously.
Use IR Pins
The options are IR-Rx2Tx2 and RxD2TxD2.
Onboard Parallel Port
378/IRQ7, 3BC/IRQ7, 278/IRQ5 Selects the I/O address and
IRQ of the onboard parallel port.
Disabled Disables the onboard parallel port.
Parallel Port Mode
The options are SPP, EPP, ECP and ECP+EPP. These apply to a
standard specification and will depend on the type and speed of
your device. Refer to your peripheral’s manual for the best option.
SPP
Allows normal speed operation but in one direction only.
“ECP (Extended Capabilities Port)”
Allows parallel port to operate in bidirectional mode and at a speed
faster than the normal mode’s data transfer rate.
“EPP (Enhanced Parallel Port)”
Allows bidirectional parallel port operation at maximum speed.
EPP Mode Select
This field is used to select the EPP mode.
ECP Mode Use DMA
This field is used to select the parallel port’s DMA channel.