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From: rzahavi@gateway.mitre.org (Ron Zahavi)
Newsgroups: comp.sys.ibm.pc
Subject: Overlays
Message-ID: <43510@linus.UUCP>
Date: 10 Jan 89 15:31:12 GMT
Sender: news@linus.UUCP
Reply-To: rzahavi@gateway.mitre.org (Ron Zahavi)
Organization: The Mitre Corporation
Lines: 26


I have a question regarding overlays. I realize it's not something
commonly used so I hope someone has some experience with it.  I am looking
for a reduction in memory as well as disk space.  After trying the
microsoft linker, it seems that it places the overlays (and overlay
manager) in the same .exe file, making it even larger.  I have 
noticed that many programs have .OVL extensions.  It seems that these
have smaller .exe files and a better breakdown in size of their other
overlay files.  This is the result I am after, since it allows you
to have a huge program placed on more than one 360k floppy while
moving it between hard disks.
 
Are these .OVL files commonly found only in the Pascal environment?
(I am using C).  Are these really EXEC files and not overlays
in the true sense of the meaning?
 
  Thanks for any info.
 
 -- Ron --


==============================================================================
      Ron Zahavi  (703) 883-5637                 Mitre Corporation
      rzahavi@gateway.mitre.org                  7525 Colshire Drive
                                                 McLean, VA  22102
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