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RE: [avr-gcc-list] Function Pointers on AT90USB1287 and ATmega2561


From: Weddington, Eric
Subject: RE: [avr-gcc-list] Function Pointers on AT90USB1287 and ATmega2561
Date: Fri, 22 Feb 2008 11:47:53 -0700

 

> -----Original Message-----
> From: Peter LaDow [mailto:address@hidden 
> Sent: Friday, February 22, 2008 10:45 AM
> To: Weddington, Eric
> Cc: address@hidden
> Subject: Re: [avr-gcc-list] Function Pointers on AT90USB1287 
> and ATmega2561
> 
> Weddington, Eric wrote:
> > It would be helpful if you filled out an avr-libc bug 
> report. That way
> > the issue can be fixed.
> 
> Done.

Thanks!
 
> >> But I do find it strange that the AT90USB1287 uses a 3 byte PC for
> >> call/ret and reti, thought it only has 128K of flash.
> > 
> > I find it extremely odd too, and I'm not at all sure that 
> it is correct.
> > Some investigation will have to be done to verify this information.
> 
> Anything I can do?  I can code up a small chunk of code and 
> show a trace
> of the PC and SP during call, ret, and reti.  Would that be helpful?

Sure! Anything to remove the mystery. :-)




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