[Coco] Re: Any reason to put a 6309 in a Coco2?

[Arthur Flexser]

I ran into one incompatibility when I installed the 6309, though it was
only because the software author broke the rules.  He used an EXEC in his
Basic program that was to an address in the middle of an instruction, but
which worked okay with a 6809, which ignored the illegal opcode.  The 6309
vectored this to its "illegal instruction" error handler, which hadn't
been initialized with any code to handle errors, so the program crashed.

Art

On Wed, 31 Dec 2003, Torsten Dittel wrote:

> > The GIME chip is the Coco3 will not support semigraphic modes
> 
> When I was talking about the "3" I referred to the "6309", not the
> CoCo3. Sorry for the confusion. I wondered if a 6309 running in
> 6809-mode would be fully compatible to an "original" 6809.
> 
> Does anyone know for shure if a "6309 Level I" NitrOS9 is planned or
> even released? Boisy?
> 
> Regards,
> Torsten
> 
> 
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>