Path: utzoo!mnetor!uunet!husc6!bloom-beacon!mit-eddie!uw-beaver!cornell!rochester!ur-tut!sunybcs!bowen
From: bowen@sunybcs (Devon E Bowen)
Newsgroups: comp.lang.postscript
Subject: image problem
Message-ID: <11116@sunybcs.UUCP>
Date: 10 May 88 18:40:08 GMT
Sender: bowen@sunybcs.UUCP
Reply-To: bowen@sunybcs.UUCP (Devon E Bowen)
Organization: SUNY/Buffalo Computer Science
Lines: 27

I'm having a problem with printing a bitmap. Originally the bitmap was
560 by 189. I used the image command as given in the example in the red
book (I had it stored in hex). This worked exactly as I expected.

After looking at the image I noticed a few lines in the bitmap data
had repeated themselves in the data file. No problem, I just went in
and deleted the lines (there were 8 of them) and changed the image
size parameters to be 560 by 181. Now it doesn't work! I have no idea
why. I finally fixed it by putting an extra 8 lines of F's at the end
of the data and changing the image row parameter back to 189. This
worked ok, but it's a waste to transmit 8 lines of null data. Does
anyone have any idea why eliminating these lines would break it? I
even watched the stdout on the tty and it didn't print any errors. It's
as though I never send the data.

I'm working on a LaserWriter NTX (I didn't try it on a LaserWriter
plus). Could it be a bug in the firmware? If there is any interest I
could try to put together a small PostScript program for you. Any
help is appreciated.
				    Devon Bowen (KA2NRC)
				    University at Buffalo

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