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Chapter3 BIOS Setup
31
User’s Manual
Parallel Port Mode : This option specifies the parallel port mode. ECP and EPP are both bidirectional data
transfer schemes that adhere to the IEEE P1284 specifications. The default setting is Normal . The other
settings are:
Setting Description
Normal Normal The normal parallel port mode is used. This is the default setting.
Bi-Dir Bi-Dir Use this setting to support bidirectional transfers on 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 bidirectional data transfer driven by the host device.
ECP The parallel port can be used with devices that adhere to the Extended
Capabilities Port (ECP) specification. ECP uses the DMA protocol to
Achieve transfer rates of approximately 2.5 Mbs. ECP provides symmetric
Bidirectional communications.
EPP Version: This option is only valid if the Parallel Port Mode option is set to EPP. This option specifies the
version of the Enhanced Parallel Port specification will be used by AMIBIOS.
Parallel Port IRQ: This option specifies the IRQ used by the parallel port. The Optimal default setting is 7.
Option Description
5 This option allows the parallel port to use Interrupt 5.
7 This option allows the parallel 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.
Parallel Port DMA Channel: This option is only available if the setting for the Parallel Port Mode
option is ECP. The other settings are setting N/A only.
OnBoard IDE: This option specifies the onboard IDE controller channels that will be used. The settings are
Disabled, Primary, Secondary, or Both.