Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uunet!mcsun!unido!mcshh!janhh!jan
From: jan@janhh.hanse.de (Jan Willamowius)
Newsgroups: comp.sys.atari.st
Subject: Re: LOGO
Message-ID: <1558.06.91@janhh.hanse.de>
Date: 6 Jun 91 17:54:02 GMT
References: <1991Jun5.134225.7733@digi.lonestar.org>
Lines: 31

Roger Sheppard asked:
>Does any one know if its posible to get Ataries Logo to work with Tos 1.4/1.6
>I do get a out of Memory when I try to load a Logo Program/File,
>Note: The software does load up on a 1040 ST with Tos 1.4.
>Are there any patches to make this work?

I just took a look at it and I guess I found the problem:

For some stupid reason LOGO tries repeatedly to allocate all
available memory until malloc(-1) returns zero. After that it
does it's Mfree().

To solve the problem you have to apply the following patch using
some kind of a disk utility.

The patch starts at offset $5C (relative to he beginning of the file).

original: $4eb9, $0001, $2fec, $4a40, $670c, $2f00, $4eb9, $0001, $2fba,
          $588f, $60ea

patched : $4a79, $0001, $2fec, $4e71, $4e71, $4e71, $4a79, $0001, $2fba,
          $4e71, $4e71

Maybe this is the rebirth of ST-LOGO... :-)

Happy hacking,
               Jan

--
Jan Willamowius, Nienredder 6, 2000 Hamburg 54, Germany
E-Mail: jan@janhh.hanse.de