Intel SBC-455 manual Epp

Onboard Serial Port2

This option enables serial port 2 on the motherboard and specifies the base I/O port address for serial port 2. The settings are Auto. Disabled, 3F8h, 2F8h, 3E8h, 2E8h. The Fail-Safe default setting is Auto.

Onboard Parallel Port

This option enables the parallel port on the motherboard and specifies the parallel port base I/O port address. The settings are Auto, disabled, 378, 378, 3BC. The Fail-Safe default setting is Auto.

Parallel Port Mode

This option specifies the parallel port mode. ECP and Epp are both bidirectional data transfer sechemes that adhere to the IEEE P1284 specification. The settings are:

Setting	Description
Normal	The normal parallel port mode is used. This is the
	default setting.
EPP	The parallel port can be used with devices that
	adhere to the Enhanced Parallel Port (EPP) specifi-
	cation. EPP uses the exiting 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 communla-
	tions.

54SBC-455 User's Manual