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ilbmtoppm(1)					 ilbmtoppm(1)

NAME
       ilbmtoppm - convert an ILBM file into a portable pixmap

SYNOPSIS
       ilbmtoppm  [-verbose]  [-ignore<chunkID>]  [-isham|-isehb]
       [-adjustcolors] [ILBMfile]

DESCRIPTION
       Reads an IFF ILBM file  as  input.   Produces  a portable
       pixmap as output.  Supported ILBM types are:

       Normal ILBMs with 1-16 planes.

       Amiga Extra_Halfbrite (EHB)

       Amiga HAM with 3-16 planes.

       24 bit.

       Multiplatte (normal or HAM) pictures.

       Color map (BMHD + CMAP chunk only, nPlanes = 0).

       Unofficial direct color.
	      1-16 planes for each color component.

       Chunks used:
	      BMHD, CMAP, CAMG (only HAM & EHB flags used), PCHG,
	      BODY unofficial DCOL chunk to identify direct color
	      ILBM

       Chunks ignored:
	      GRAB,  DEST,  SPRT,  CRNG,  CCRT, CLUT, DPPV, DRNG,
	      EPSF

       Other chunks (ignored but displayed in verbose mode):
	      NAME, AUTH, (c), ANNO, DPI

       Unknown chunks are skipped.

OPTIONS
       -verbose
	      Give some information about the ILBM file.

       -ignore <chunkID>
	      Skip a chunk.  <chunkID> is the 4-letter IFF  chunk
	      identifier of the chunk to be skipped.

       -isham | -isehb
	      Treat  the  input file as a HAM or Extra_Halfbrite
	      picture, even if these flags or not set in the CAMG
	      chunk (or if there is no CAMG chunk).

			 04 October 1993			1

ilbmtoppm(1)					 ilbmtoppm(1)

       -adjustcolors
	      If all colors in the CMAP have a value of less then
	      16, ilbmtoppm assumes a 4-bit colormap and gives	a
	      warning.	With  this option the colormap is scaled
	      to 8 bits.

BUGS
       The multipalette PCHG BigLineChanges  and  Huffman  decom-
       pression code is untested.

REFERENCES
       Amiga ROM Kernel Reference Manual - Devices (3rd Ed.)
       Addison Wesley, ISBN 0-201-56775-X

SEE ALSO
       ppm(5), ppmtoilbm(1)

AUTHORS
       Copyright (C) 1989 by Jef Poskanzer.
       Modified October	 1993 by Ingo Wilken (Ingo.Wilken@infor-
       matik.uni-oldenburg.de)

			 04 October 1993			2

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