[hatari-devel] DSP Instruction cycle count

Thomas Huth huth at users.berlios.de
Mon Jul 13 23:20:36 CEST 2009


On Fri, 10 Jul 2009 23:25:03 +0200
Laurent Sallafranque <laurent.sallafranque at free.fr> wrote:

> >> Dsp sound seems to be clearer (but still not perfect).
> >>     
> > Is it normal that when programs (demos) exit, there's still some
> > background sound?
> >   
> I think sound is bufferized, that's probably why we can listen some 
> music after a reset (Thomas ?)

Yes, all the crossbar matrix code is still a quick-n-dirty hack. I've
simply introduced a buffer to store the samples from the DSP which is
then later mixed with the sound from the PSG. IIRC I don't clear that
buffer when the DSP is not used anymore ... unfortunately I currently
lack time and motivation to work on that code ... ;-( Sorry, I will fix
it later (I still plan to rewrite/extend/fix that sound matrix code,
but it's a lot of work and I still haven't understood all the details
yet, so this has maybe to wait a little bit longer...).

 Thomas



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