Path: chuka.playstation.co.uk!news
From: Jim <jim@micronetics.com>
Newsgroups: scee.yaroze.programming.libraries
Subject: Re: VSyncCallback
Date: Thu, 03 Jul 1997 13:41:20 +0100
Organization: PlayStation Net Yaroze (SCEE)
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Alain Malek wrote:

>  I tried to use the VSyncCallback function.
> But I couldn't share variables between the callback
> routine and the main program.

Are you using compiler optimisations??  I believe there is a glitch in
the compiler when relating to the $gp register inside the callback.

The workaround is to put you callback function and shared variables in a
separate .c file.  Compile that with NO optimizations.  And link it with
your other optimized objects.  You will probably have to write a header
file to declare the variables and prototypes as externs.

There was a posting about a month or two ago describing exactly this
from Alex Amsel.  Check these out for more information.

Regards

JiM