Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pasteur!agate!eris!bryce
From: bryce@eris (Bryce Nesbitt)
Newsgroups: comp.sys.amiga
Subject: Re: LVOs and SetFunction
Message-ID: <7407@agate.BERKELEY.EDU>
Date: 6 Mar 88 05:33:54 GMT
References: <5136@pyr.gatech.EDU>
Sender: usenet@agate.BERKELEY.EDU
Organization: University of California, Berkeley
Lines: 47

In article <5136@pyr.gatech.EDU> davidc%yak@gatech.edu (Dave Corbin) writes:
>First off, where do the LVOs come from? Is there some file (I hope) with them
>defined?  Where does one get this file?

The ultimate source of everything is the ".fd" files.  These contains
the definitions from which all others can be built.  They are not
*directly* useable.

Lattice C V4.0 comes with the .fds, and they are also available from CATS.
(Some CATS person should post the catalog of CATS offerings, BTW).


The Library Vector Offsets (LVOs) are also stored in the amiga.lib
library, and referenced indirectly:

	XREF	_LVODeleteLayer
	move.w	#_LVODeleteLayer,d0
 
For assembly language use, my "small.lib" is much better, since it contains
*only* the LVOs and not a 70K of other junk.  (See fish #72 or #92).
Blink has a bug that Gurus on this file, but you can get arround this by
not telling Blink that it is really a library.


For getting a neat printed reference chart, look in the comp.source.amiga
archives for "library_referencer".  Compile it.  Cd to the fd.files
directory and execute it.  This will show the LVO offsets in a nice,
readable way.


>Second.  I want to start do some mucking with SetFunction.  I understand the
>principals of how to use it, but I'm not a real assembly-jock.  Does anyone
>have a nice example(entire program) that just does one simple stupid
>SetFunction.
>If it is mostly in C, I'd be even happier.  

C and SetFunction() don't mix well.  You need to at least write an
assebly stub for the program you are SetFunction()ing.

The comp.sources.amiga archives have "Cancel!", an assembly program I
wrote that uses SetFunction.   (Cancel! will reboot the machine if a Guru
occurs while you are gone, and Cancel any requesters that show up).


|\_/|  . ACK!, NAK!, EOT!, SOH!
{O_o} .     Bryce Nesbitt
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