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Article #1031

Re: Raw mode on lp - Help!

#1031
From: tim Tim Dawson
Date: Mon, 15 Oct 1990 21:08
28 lines
1559 bytes
kdq@demott.COM (Kevin D. Quitt) writes:


>    I need to dump out a file to the printer, which file contains
>characters that have the high bit set (for graphics).  I'm running on a
>Motorola Delta 3600, SYSV R3V5.1.  Why doesn't the following work?
...
>	lp	= open( "/dev/lp147", O_WRONLY, 0600 );
...

Well, I hate to tell you this, but this device has been given a number of 
"Features" that may make this impossible such as:

1) A maximum page width of something like 128 columns
2) Form Feed after a page
3) As I recall, the driver also will only pass 7 bit characters, and then only
   those which are eprintable or are recognized controls.

I short, they attempted to implement some desireable features in the driver 
instead of in lp where they belong.  There is a workaround for the column 
width problem, and maybe for the form feed, but the last time I pursued this, 
running graphic character codes out this device is still very painful if not
impossible.
--
================================================================================
Tim Dawson (...!texsun!Athena!MIS1!tim)  Motorola Computer Systems, Dallas, TX.

"God gave me a brain and I give Him the glory by using it!"
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!texsun!Athena!MIS1!tim
From: tim@.UUCP (Tim Dawson)
Newsgroups: comp.unix.programmer
Subject: Re: Raw mode on lp - Help!
Message-ID: <tim.656024920@MIS1>
Date: 15 Oct 90 21:08:40 GMT
References: <756@demott.COM>
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