Acrosser AR-B8172 - Manual (Page 27)

AR-B8172 User Manual
to disabled.
3E8/IRQ4
Set this value to allow the serial port to use 3E8 as its I/O port address and IRQ 4 for
the interrupt address. If the system will not use a serial device, it is best to set this port
to disabled.
2E8/IRQ3
Set this value to allow the serial port to use 2E8 as its I/O port address and IRQ 3 for
the interrupt address. If the system will not use a serial device, it is best to set this port
to disabled.
Option Description
Normal
Set this value to allow the standard parallel port mode to be used. This is the
default setting.
Bi-Directional lSet this value to allow data to be sent to and received from the parallel port.
EPP
The parallel port can be used with devices that adhere to the Enhanced Parallel
Port (EPP) specification. EPP uses the existing parallel port signals to provide
asymmetric bi-directional data transfer driven by the host device.
EPP
The parallel port can be used with devices that adhere to the Extended
Capabilities Port (ECP) specification. ECP uses the DMA protocol to achieve data
transfer rates up to 2.5 Megabits per second. ECP provides symmetric
bi-directional communication.
Option Description
5
Set this value to allow the serial port to use Interrupt 3.
7
Set this value to allow the serial port to use Interrupt 7. This is the default setting.
The majority of parallel ports on computer systems use IRQ7 and I/O Port 378H
as the standard setting.
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