For programmers’ information, the Ethernet Card TCP/IP mode responds only to arp packets and to TCP/IP connections made to port (socket) x0203, and ftp socket. Connection attempts to other port addresses will meet with no response. All data arriving at this port is assumed to be following valid lpr protocol, and therefore you cannot just send data to this port.

Instead of lpr, which may strip control characters, (use - 1 to avoid this), ftp may be used to print. Enter ftp, then open the Ethernet Card by entering its host name (for example, “open Allison”). A file may be printed simply by sending it (“send filename”). You can use console commands or Scripts to automate this process, and create ftp spool queues.

Both ftp and lpr have output filters available, which are capable of:

LI translating a UNIX line-end to a normal line-end by inserting a carriage return byte

Cl sending a form feed at the end of a file in order to eject a page.

The means of invoking these filters differ between ftp and lpr as follows:

ftp (line ending)

As default, ftp runs with binary file transfer. This may be changed to ASCII file transfer by simply entering the command “ASCII” on the ftp command line. When in ASCII mode, the Ethernet Card will convert incoming UNIX line-ends to include a carriage return. To change back to BINARY mode, enter the command “BINARY” on the ftp command line.

5-6 Installing in UNIX