Siemens PC 670 Printer Port Internal LPT1, Settable Mode Features Output Only, Bidirectional

Release 04/02 Configuring the Computing Unit in BIOS Setup

Printer Port Internal LPT1

Mode:

Use this setting to set the operating mode of the printer interface. Refer to the table below to ensure that the setting matches the printer connected to the printer port.

Settable Mode		Features
Output Only	S	Standard setting for the 8 bit parallel transfer
Standard parallel port –		according to IEEE1284 specifications
unidirectional (SPP)	S	Feedback of the output device is only possible via
		the control cables
Bidirectional	as for SPP – unidirectional, however:
Standard parallel port –	S	Feedback of the output device is also possible via
bidirectional		the 8 bit data cables
EPP	S	Enhanced parallel port (data transfer rate from
Enhanced parallel port		500kbps up to 2Mbps)
	S	Hardware handshake
	S different devices can be addressed
ECP	as for EPP, however:
Extended capability port	S	own DMA channel
	S	FIFO backup
	S	Data compression

Panel PC 670 Computing Unit, Equipment Manual 5-17