Re: [hatari-devel] DSP for Previous

[Laurent Sallafranque <laurent.sallafranque@xxxxxxx>]

>  - what are the difference with dsp in hatari ? Only interrupt 
handling or are there any other changes ? (I see DMA interrupts were 
added, IIRC it's missing in Hatari)


No, no ! There's no DMA access to the DSP into the Falcon.
You can only access the DSP via the SSI or the Host port, but not by DMA.
That's why I didn't code all the DMA part (unuseful for a Falcon).

Laurent




Le 02/07/2015 20:39, Nicolas Pomarède a écrit :
> Le 02/07/2015 20:28, Laurent Sallafranque a écrit :
> > Thanks a lot for this Andreas.
> > The problem is that I really have few time actually.
> > Maybe in september.
> >
> > Nicolas, I suggest we apply this patch after the new version of hatari.
> >
> > Best regards
> > Laurent
>
> Yes, thanks a lot Andreas. I gave a look to the diff and this makes 
> quite a lot of changes, so I agree it would be better to wait after 
> 1.9 is released to apply some changes.
>
> 2 questions for andreas :
>
>  - what are the difference with dsp in hatari ? Only interrupt 
> handling or are there any other changes ? (I see DMA interrupts were 
> added, IIRC it's missing in Hatari)
>
>  - also, why are some variables declared as 'volatile' ? This is 
> usually when a variable holds the content of some hardware registers, 
> but here it's not the case.
>
> Nicolas