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lispmtopgm(1)									    lispmtopgm(1)

       lispmtopgm - convert a Lisp Machine bitmap file into pgm format

       lispmtopgm [lispmfile]

       Reads a Lisp Machine bitmap as input.  Produces a portable graymap as output.

       This is the file format written by the tv:write-bit-array-file function on TI Explorer and
       Symbolics lisp machines.

       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 graymap instead.  This is unfortunate.

       pgmtolispm(1), pgm(5)

       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  mul-
       tiple  of  32,  we  don't  deal with it properly, but because of the Lispm microcode, such
       arrays are probably not image data anyway.

       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.

       No color.

       Copyright (C) 1991 by Jamie Zawinski and Jef Poskanzer.

					  06 March 1990 			    lispmtopgm(1)
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