This is the Amiga port of Ghostscript5.01. Ghostscript is a Postscript
interpreter with support for Level 2 PS and PDF. This release includes
most popular printers and fileformats including an updated Amiga display
driver.
Features:
Ghostscript supports three Amiga specific devices (but see below for ILBM):
amiga Amiga Workbench window
amiga_custom Amiga custom screenmodes
amiga_printer Amiga printer.device
(amiga_printer seems to have problems, please use one of the internal ones)
(redesign done by Steffen Opel opel@sto.isdn.uni-mannheim.de)
The device 'amiga' opens an Intuition window on the Workbench screen to
display the image. Its usage should be pretty obvious.
The device 'amiga_custom' opens a Customscreen to display the image. This
allows any Display Mode available in the screenmode preferences to be used
with Ghostscript too.
The device 'amiga_printer' is a convenient alternative for the printer devices
provided by Ghostscript itself. It facilitates standard Amiga printing via the
Workbench printer drivers and respects most settings in the graphics
preferences as described in the Workbench documentation.
All three devices are supporting -g and -r as described in 'use.txt'.
Ghostscript currently has only limited support for IFF ILBM files:
amiga_ilbm IFF ILBM file format
The device 'amiga_ilbm' works like any other Ghostscript raster file or
printer device (i.e. pbm), see 'Choosing the output device' above on how
to specify an output file.
It supports dithered grayscale only and is not portable to other platforms
because it uses iffparse.library. A portable implementation with color
support is currently under development.
This port requires:
- An Amiga equipped Kickstart 2.04 or higher.
- Approx. 4.7 MBytes of hard disk space available.
- A minimum of 1 MByte of chip memory, depending on what you want to do
with the interpreter. Printer output requires at least 2 MBytes of
contiguous memory (any memory, not necessarily chip memory).
- A bunch of Postscript/Ghostscript fonts.
Comments/Suggestions/Bugs to:
JoopvandeWege@mail.mococo.nl
Please use a Subject field with the name 'GS501' in it.
Please direct all mail to me except when you're 100% sure it is a GS
problem then you can use the Aladdin email address.
Joop van de Wege
Getting Ghostscript.
Download one of the binary archives which match your CPU. It contains
one binary.You might need a patch which is only needed if:
- you have an 040
- and Kickstart 3.1
- and are *NOT* running one of the 040 binaries.
- and you are *NOT* using the latest 'setpatch'.
(it fixes a couple of bugs in 3.1. The symptoms are GURU 8..0B. If you get
them then you need SetMathPatch, probably. Read the docs of SetMathPatch)
How to use Ghostscript.
- Unpack the archive gs501data.lha to a suitable HD with enough room (~3.5M).
for example 'Work:'.
A directory 'Ghostscript' will be created and all files needed are found
within this directory (Work:Ghostscript).
- Unpack one of the special binary archives to the same HD and the executable
will automatically be placed in the same directory (Work:Ghostscript/gs_000).
Further do:
- Assign Ghostscript: Work:Ghostscript
- path Ghostscript: add
(Optionally, rename the binary gs_xxx to 'gs')
Now you can call 'gs' from anywhere with or without arguments. If you add
the above fragment (Assign ... add) to your s:user-startup then it will
available everytime you start your computer
- Unpack gs501fonts-std.lha, if you don't have a set of good quality
postscript fonts. The advantage of using this archive is that you don't
need to mess with the file 'Fontmap'. The fonts will be placed in
'Work:Ghostscript/fonts'.
Or if you already have postscript fonts, do the following:
- Assign PSFonts: to your postscript font directory (anywhere)
- create file PSFonts:FONTMAP with at least the following entries:
% fontmap aka Fontmap
% ----------------------------------------------------------------
/Times-Roman (ptmr.gsf) ;
/Times-Italic (ptmri.gsf) ;
/Times-Bold (ptmb.gsf) ;
/Times-BoldItalic (ptmbi.gsf) ;
It does not matter, which font files are assigned (see below)
- entries within the FONTMAP file at PSFonts: must follow the
scheme described below:
/Fontname (Filename) ;
for example
/Helvetica (Helvet.pfb) ;
which means, the corresponding files must actually exist.
But one also my substitute Fonts symbolically by other fonts,
like for example:
/Helvetica_Bold /Helvetica ;
- the variables in ENV: and ENVARC: must look as follows:
Variable Content Remark
GS_FONTPATH do not set: delete this one!!
GS_LIB PSFonts:
GS_OPTIONS set it, but keep it empty
GS_DEVICE amiga for example (its the default)
See the 'Ghostscript/docs/use.txt' directory for more information, like
commandline options. Some notes:
- Watch out for case sensitivity when using commandline options, -sOutputFile
is not equal to -soutputfile !!!!!
- Set your stack high enough, 32000 bytes should do it (stack 32000).
Some very useful commandlines with comments in ():
gs -h (outputs small help on most important arguments, and lists all availble
output devices)
gs (gs opens window on WB and use its palette, use 256color WB if possible,
there is a problem with NewIcons, it looks like all palette entries are
reserved by NewIcons so GS will only display in B/W if you use NewIcons)
gs -sDEVICE=png16m (uses the built-in PNG support instead of window on WB)
gs -sOutputFile=ram:output%02d.png -sDEVICE=png256
(output to files numbered ram:output01.png/ram:output02.png/etc using
the PNG format (8bit))
gs -r120 (use 120dpi as resolution instead of built-in 72, uses heaps of
memory at high values)
Arguments useful for PDF files (and ps documents conforming to DSC ?)
gs -dFirstPage=pagenumber (starts on the given page of the document)
gs -dLastPage=pagenumber (Stops after the given page of the document)
See use.doc/Switches for a complete overview of what is available.
(taken from 'new-user.txt')
PDF encryption
--------------
A user outside the U.S. has created code that allows processing of encrypted
PDF files. Unfortunately, current U.S. export control laws don't allow
redistribution of this code from a site in the U.S., even though it's freely
available to anyone anywhere in the world from its author's site, so you'll
have to get this code from:
http://www.ozemail.com.au/~geoffk/pdfencrypt/pdf_sec.ps
If that doesn't work, try:
http://www.ozemail.com.au/%7Egeoffk/pdfencrypt/pdf_sec.ps
The patch consists entirely of PostScript code, so it can be added to a
running version of Ghostscript -- you don't have to recompile anything. It
is a single file that replaces the file pdf_sec.ps in the standard
Ghostscript fileset (Ghostscript:data/pdf_sec.ps).
|
aminet net>