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From: peic@core.north.de (Peter Eichler)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Getting Kickstart version
Message-ID: <194f341d.ARN0105@core.north.de>
Date: 16 Jun 91 11:18:05 GMT
References: <3646@sirius.ucs.adelaide.edu.au>
Reply-To: peic@core.north.de (Peter Eichler)
Followup-To: comp.sys.amiga.programmer
Organization: Private UUCP-Site
Lines: 46

In article <3646@sirius.ucs.adelaide.edu.au>, Jonathan Potter writes:

>How do I find out what version of Kickstart is running, in an OS friendly way?
                                                               ^^^^^^^^^^^
>Under 1.3, location $fc000c contains it, but this doesn't work under 2.0.
            ^^^^^^^^^^^^^^^^

This is *definitely* NOT OS friendly, if you look at a particular address to
get a version number!!! Remember: Only $00000004, which contains the pointer
to SysBase is a fix address; all other locations may vary in future versions!
So please: NEVER NEVER peek into RAM or ROM (the old Basic times are over
now), otherwise your application won't run (or even worse: it will crash)
on different OS versions.

The easiest (and IMHO one of the "cleanest") methods is simply to look
at the version of ExecBase:


   #include <stdio.h>
   #include <exec/types.h>
   #include <exec/libraries.h>
   #include <proto/exec.h>     /* or "functions.h" for Aztec */

   struct Library *ExecBase;
   UWORD           Version, Revision;

   ExecBase = OpenLibrary("exec.library", 0);
   if(ExecBase)
   {  Version  = ExecBase->lib_Version;
      Revision = ExecBase->lib_Revision;
      printf("Version: %ud; Revision: %ud\n", Version, Revision);
      CloseLibrary(ExecBase);
   }
   else printf("Couldn't open ExecBase!!!\n");


>Please mail replies if you can help. Thanks.
>Jon

Hope, that will help you...
Peter

Q:What's the problem of being drunk?  A:Ask a glass of water.     (Hitchhiker)
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