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From: laser-lovers@uw-beaver
Newsgroups: fa.laser-lovers
Subject: Re:  Glyph problems on the 8/300
Message-ID: <965@uw-beaver>
Date: Wed, 27-Mar-85 15:49:03 EST
Article-I.D.: uw-beave.965
Posted: Wed Mar 27 15:49:03 1985
Date-Received: Thu, 28-Mar-85 03:12:53 EST
Sender: daemon@uw-beaver
Organization: U of Washington Computer Science
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From: Dave Nelson <daven@lll-crg.ARPA>

This may not be apropos, but...

With our older 240dpi Imagen, we at LLNL had problems printing 40 point
ANYTHING on ditroff.  As I recall, this was because the supplied driver
(called dcan) used font files in vfont(5) format, and the large font sizes
had more than 64K worth of bitmaps.

When this happens, dispatch.addr (excuse the abuse of notation) no longer
points to the start of the glyph for glyphs beyond 64K into the font file.
Thus the driver picks up random bits at offset mod 64K and uses them as
the glyph.

We kludged around it without much difficulty.

daven@lll-crg