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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.3//EN">
<html><head><title>Lispmtopgm User Manual</title></head>
<body>
<h1>lispmtopgm</h1>
Updated: 06 March 1990
<br>
<a href="#index">Table Of Contents</a>
<h2>NAME</h2>
lispmtopgm - convert a Lisp Machine bitmap file to PGM
<h2 id="synopsis">SYNOPSIS</h2>
<b>lispmtopgm</b>
[<i>lispmfile</i>]
<h2 id="description">DESCRIPTION</h2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<p><b>listpmfile</b> reads a Lisp Machine bitmap as input and
produces a PGM image as output.
<p>This is the file format written by the tv:write-bit-array-file
function on TI Explorer and Symbolics lisp machines.
<p>Multi-plane bitmaps on lisp machines are color; but the Lispm image
file format does not include a color map, so we must treat it as a
monochrome instead and produce PGM. This is unfortunate.
<h2 id="options">OPTIONS</h2>
<p>There are no command line options defined specifically
for <b>lispmtopgm</b>, but it recognizes the options common to all
programs based on libnetpbm (See <a href="index.html#commonoptions">
Common Options</a>.)
<h2 id="seealso">SEE ALSO</h2>
<a href="pgmtolispm.html">pgmtolispm</a>,
<a href="pgm.html">pgm</a>
<h2 id="limitations">LIMITATIONS</h2>
The Lispm bitmap file format is a bit quirky; Usually the image in the file
has its width rounded up to the next higher multiple of 32, but not always.
If the width is not a multiple of 32, we don't deal with it properly, but
because of the Lispm microcode, such arrays are probably not image data
anyway.
<p>Also, the Lispm code for saving bitmaps has a bug, in that if you
are writing a bitmap which is not mod32 across, the file may be up to
7 bits too short! They round down instead of up, and we don't handle
this bug gracefully.
<h2 id="author">AUTHOR</h2>
<p>Copyright (C) 1991 by Jamie Zawinski and Jef Poskanzer.
<hr>
<h2 id="index">Table Of Contents</h2>
<ul>
<li><a href="#synopsis">SYNOPSIS</a>
<li><a href="#description">DESCRIPTION</a>
<li><a href="#options">OPTIONS</a>
<li><a href="#seealso">SEE ALSO</a>
<li><a href="#limitations">LIMITATIONS</a>
<li><a href="#author">AUTHOR</a>
</ul>
</body>
</html>
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