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102 lines
4.6 KiB
Plaintext
102 lines
4.6 KiB
Plaintext
COPYRIGHT NOTICE (SCCSid = "@(#)ReadMe 2.2 10/24/89")
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Copyright (c) 1988, The Regents of the University of California.
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Edward Moy, Workstation Software Support Group, Workstation Support
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Serices, Information Systems and Technology.
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Permission is granted to any individual or institution to use, copy, or
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redistribute this software so long as it is not sold for profit,
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provided that this notice and the original copyright notices are
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retained. The University of California makes no representations about
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the suitability of this software for any purpose. It is provided "as
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is" without express or implied warranty.
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WHAT IS MACPS?
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Macps is a Unix program that takes an uploaded PostScript file created
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on a Macintosh (by typing Command-F at the LaserWriter dialog box; see
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macps.1 for more details) and includes an appropriately modified
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LaserPrep file so that the result can be sent to a PostScript printer
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>From Unix. The LaserPrep file contains macros used by the PostScript
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generator on the Macintosh.
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WHY IS MACPS NEEDED?
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This is how Mac printing works. When a Mac talks to a LaserWriter, it
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asks if the LaserWriter has had a LaserPrep file downloaded to it. A
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LaserWriter that is first powered up, has no such LaserPrep file, and
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so the Mac downloads it and makes the LaserPrep file resident in
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memory. Then the actual print file is sent to the LaserWriter.
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Subsequent print requests need not download the LaserPrep file, unless
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it is a different version.
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Since a LaserWriter connected to a Unix system usually does things
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other than Mac printing, it is unwise to make LaserPrep files resident
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in memory so that other PostScript jobs have less memory to work with.
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What prepfix does is to modify a LaserPrep file so that, among other
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things, it does not make itself resident in memory. Thus, the
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LaserPrep file must be downloaded for each Mac print job. This is the
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function of macps, to automatically append the appropriate LaserPrep
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file.
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WHICH VERSION OF THE LASERPREP WILL BE USED?
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Macps interprets the %%IncludeProcSet directive found in the PostScript
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generated by LaserWriter driver 4.0 and greater. It takes the ProcSet
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id and looks it up in a file "macps.config", to get the pathname of the
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prep file, and thus macps can convert PostScript generated by different
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versions of the LaserWriter driver.
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HOW ARE THE LASERPREP FILES GENERATED?
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Since the Apple LaserPrep files are copyrighted, I've included a
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program, prepfix, that reads version 4.0 and up LaserPrep files, and
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edits them so that they are compatible with Unix, and are even
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electronically mailable (See prepfix.1 for more details).
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WHERE IS THE MACPS.CONFIG FILE LOCATED?
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Macps has some special code that is able to figure out from which
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directory it was called from. It will then look in a "lib" subdiretory
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for the macps.config file.
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WHAT ABOUT BIT-SMOOTHING ON NON-LASERWRITER PRINTERS?
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For PostScript printers using Motorola 680x0 processors and Adobe
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PostScript firmware other than LaserWriters, there is an option that
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will allow these printers to do bit-smoothing, just like LaserWriters.
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CHANGES IN VERSION 2.2
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Version 2.2 of prepfix now supports LaserPrep 6.0. The PostScript
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save/restore context is now a compile-time option, since it caused
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printing to fail on a NeXT printer (though it was harmless on most
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other printers). This save/restore is now more intelligent about
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clearing the stacks.
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CHANGES IN VERSION 2.1
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Version 2.1 of prepfix uses a safer method for turning on bit-smoothing
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for non-Apple printers. This should get around some of the problems
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people have been having with specialized macros in the LaserPreps that
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are Apple printer specific. The -l and -p options in version 1.1 have
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been replaced with the single -l option, and the limit on the number
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of printers you can specify has been removed.
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Also, prepfix removes some other various macros that cause
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unpredictable problems, and a problem with Apple LaserWriter II/NTs
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(but not other Apple printers).
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Version 2.1 macps has several new options. The -c option allow you to
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specify the number of copies to generate (overriding any multiple copy
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option that was specified on the Macintosh). The -d option allows an
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alternate directory to look for the macps.config file. Finally, the -r
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(raw) option suppresses the conversion of 8-bit binary into ASCII, and
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is useful for some graphics programs that manipulate gray-scale images,
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and produce 8-bit binary PostScript output.
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Macps will even work with a NeXT laser printer, but (at least the 0.8
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version of the operating system) will not do bit smoothing. Beware,
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though, that if you print Macintosh patterns at 400 dpi, they will
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look funny.
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