# lispmtopgm(1) - man - phpMan

[lispmtopgm(1)](https://www.chedong.com/phpMan.php/man/lispmtopgm/1/markdown)                          General Commands Manual                         [lispmtopgm(1)](https://www.chedong.com/phpMan.php/man/lispmtopgm/1/markdown)



## NAME
       lispmtopgm - convert a Lisp Machine bitmap file into pgm format

## SYNOPSIS
       **lispmtopgm** [_lispmfile_]

## DESCRIPTION
       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  in‐
       clude a color map, so we must treat it as a graymap instead.  This is unfortunate.

## SEE ALSO
       [pgmtolispm(1)](https://www.chedong.com/phpMan.php/man/pgmtolispm/1/markdown), [pgm(5)](https://www.chedong.com/phpMan.php/man/pgm/5/markdown)

## BUGS
       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.

       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.

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



                                            06 March 1990                              [lispmtopgm(1)](https://www.chedong.com/phpMan.php/man/lispmtopgm/1/markdown)