User`s manual

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Award BIOS Setup Utility
IR Function Duplex
Half Data is completely transmitted before receiving data.
Full Transmits and receives data simultaneously.
TX,RX Inverting Enable
The options are No, Yes; Yes, No; Yes, Yes; No, No.
Onboard Parallel Port
378/IRQ7, 3BC/IRQ7, 278/IRQ5 Selects the I/O address and
IRQ for the onboard parallel port.
Disabled Disables the onboard parallel port.
Onboard Parallel Mode
The options are Normal, 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.
Normal
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.
ECP Mode Use DMA
This is used to select a DMA channel for the parallel port. The
options are 1 and 3.
Parallel Port EPP Type
The options are EPP1.9 and EPP1.7.
OnChip Sound (CA64-TC)
By default, this field is set to Enabled - the onboard sound controller
enabled. If you are using an audio add-in card, set this field to Disabled.