lispmtopgm man page on BSDOS

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lispmtopgm(1)					lispmtopgm(1)

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 include a color map,  so
       we  must treat it as a graymap instead.	This is unfortu-
       nate.

SEE ALSO
       pgmtolispm(1), pgm(5)

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				1

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