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Lispmtopgm User Manual(0)						Lispmtopgm User Manual(0)

NAME
       lispmtopgm - convert a Lisp Machine bitmap file to PGM

SYNOPSIS
       lispmtopgm [lispmfile]

DESCRIPTION
       This program is part of Netpbm(1)

       listpmfile reads a Lisp Machine bitmap as input and produces a PGM image 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 monochrome instead and produce PGM.  This is
       unfortunate.

SEE ALSO
       pgmtolispm(1) , pgm(1)

LIMITATIONS
       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.

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

netpbm documentation			  06 March 1990 		Lispmtopgm User Manual(0)
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