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In article <1992Oct27.035357.4293@adobe.com> delahunt@adobe.com (Jim DeLaHunt) writes:
<In article <1992Oct26.202733.5318@island.COM> hue@coney.island.COM (Pond 
<Scum) writes:
<>I would like to be able to print files which
<>contain binary data to a serially attached PostScript printer, but I
<>cannot figure out how to send down the special characters (^A, ^C, ^D,
<>^Q, ^S, ^T, and ^[) without them being interpreted as the special
<>characters.  I have a document titled "Adobe Serial and Parallel
<>Communications Protocols Specification" and it says there is no way
<>to send these characters to the printer if the printer only supports
<>the standard protocol.  [and the NTX supports only the standard protocol]....
<>I figure there must be a way to get this to work because I don't
<>hear people complaining about not being able to print their Mac
<>PostScript files via CAP because they contain binary data.  ....
<
<On RS232 and Centronics connections, PostScript printers reserve certain
<bytes values for job control functions (e.g. ^D means "end of job").  This
<is the Adobe Standard Protocol.  Some printers support other protocols, 
<such as BCP and TBCP, which provide a way to escape the special byte values
<and use them as data.  The tech note you have describes these other protocols.

Oops.  I forgot about the ^D being special on the Centronics connector as well.
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