Re: [hatari-devel] Fix for Falcon's noisy sound

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 08/10/2016 à 00:51, Eero Tamminen a écrit :
> Hi,
>
> I tested music playback applications from our compatibility list.
>
> * GemPlay "AM" playback sounds good now (unlike earlier)
>
> * AceMidi demo and AceTracker sound good despite frameskip of 1.
>   In AceTracker case, also AM module playback sounds now good, at
>   least until frameskip raises (i.e. my CPU is too slow for DSP emu).
>
> * FlexTrax still has some awful loud noise in the background
>   after one starts playing anything (even single notes). Full
>   FlexTrax module playback is too heavy for my machine
>   (it's constantly at max frameskip)
>
> * FalcAMP MP3 playback still complains about DSP timeouts (-> no sound)
>
> * FlaySID SID playback still works only for YM, DSP playback is silent
>
> * Aniplay MP3 playback says that it cannot synchronize DSP and
>   compat list says that this uses DMA + DSP

Hi

thanks for your tests, they confirm an improvement for DMA only sound ; 
the cases still not working were expected due to DSP/CPU cycles issues.

> Note: right from boot, I get writepos warnings constantly.

Yes, this is because at start crossbar is reset but no source are 
sending data to the DAC, until you really start a program or demo, so 
the warning is always there.
I will remove the message later anyway, it's just a test for now.

Nicolas