[comp.lang.postscript] Binary data path to a Laserwriter NTX

leech@Apple.COM (Jonathan Patrick Leech) (05/27/89)

	I am trying to download binary (8-bit transparent)
data to a LaserWriter II NTX over AppleTalk, using Emerald City's Lasertalk 
application on a Mac II. I'm very new to PostScript programming and would 
appreciate any pointers about how to go about this, and if it's even 
possible. One problem I'm having is that something like
	/stdin (%stdin) (r) file def
	/s 10 string def
	stdin s readstring
	<10 non-printing characters>

	sometimes seems to hang the NTX, depending on which particular 
characters I'm trying to download - the Inuse light flashes continually
and LaserTalk hangs. I'm also a bit confused by the varying behavior
of the read/readstring/readline operators depending on whether I'm
using batch or interactive mode - the red book isn't as clear as it could
be about the differences here.
	I realize that the standard PostScript character set doesn't include
non-printing characters, but this application is specifically for use with
an Apple LaserWriter and over AppleTalk. 
	Thanks in advance,
	Jon Leech (leech@apple.com)
	Apple Integrated Systems, San Jose
	__@/