TYAN THUNDER 2 ATX Manual page 56

Chapter 4
Receiver Polarity
This option specifies if the IRQ signal for IR transmission is Active
High or Active Low. The settings are Active High or Active Low. There
are no default settings.
Transmitter Polarity
This option specifies if the IRQ signal for IR transmission is Active
High or Active Low. The settings are Active High or Active Low. There
are no default settings.
Onboard Parallel Port
This option specifies the base I/O port address of the parallel port on
the motherboard. The settings are Disabled, 378h, 278h, or 3BCh. The
Optimal default setting is 378h. The Fail-Safe default setting is Dis-
abled.
Parallel Port Mode
This option specifies the parallel port mode. The Optimal default
setting is Normal. The Fail-Safe default setting is Disabled. The
settings are:
Setting
Normal The normal parallel port mode is used.
Bi-Dir Use this setting to support bidirectional transfers on the parallel port.
The parallel port can be used with devices that adhere to the Enhanced Parallel Port
EPP (EPP) specifications. EPP uses the existing parallel port signals to provide asymmetric
bidirectional data transfer driven by the host device.
The parallel port can be used with devices that adhere to the Extended Capabilities Port
ECP (ECP) specifications. ECP uses the DMA protocol to achieve data transfer rates of up
to 2.5 Megabits per second. ECP provides symmetric bidirectional communication.
EPP Version
This option specifies the Enhanced Parallel Port specification version
number that is used in the system. This option only appears if the
Parallel Port Mode option is set to EPP. The settings are 1.7 or 1.9.
There are no Optimal and Fail-Safe default settings because the default
setting for the Parallel Port Mode option is not EPP.
Description
56