Subject: Re: [netatalk-admins] papd problem - binary postscript
From: Sak Wathanasin (sw@nan.co.uk)
Date: Fri May 29 1998 - 18:02:03 EDT
In reply to Jeff Wiegley's message of the 27/05/98 at 22:15 +0000,
> reports indicate that some (model not specified) apple printers
> only communicate with binary data properly on the appletalk ports.
I don't know about the parallel port PS printers, but certainly with the serial
ports you can't send full binary because:
1) the PS interpreter uses XON/XOFF for flow-control (although you can switch
to h/w flow-control)
2) interprets control-T as a request for printer status
3) control-C is abort
4) control-D is EOF
or at least the Adobe PS does. If papd were to accept full binary in the
in-coming stream, it has to escape the above bytes before sending them out
through the serial port.
Sak Wathanasin
Network Analysis Limited
178 Wainbody Ave South, Coventry CV3 6BX, UK
Internet: sw@nan.co.uk
Phone: (+44) 1203 419996 Fax: (+44) 1203 690690
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