Re: [hatari-devel] video freq set to 60 Hz instead of 50 Hz for Falcon VGA

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 04/03/2024 à 23:15, Nicolas Pomarède a écrit :
> Le 25/02/2024 à 17:18, Laurent Sallafranque a écrit :
> > Ok, I'll have a look. Which test was it ? (just to compare with 
> > previous hatari versions) ?
>
> Hi
>
> sorry, forgot to reply to this ; my test was with a custom made program, 
> so not sthg that can be trusted.
>
> Are there any demo running in VGA 60 Hz ? If so, it would need a check 
> to see if this demo is still playing sound correctly now that Hatari 
> does 60Hz and not 50 Hz as it did before.

This is now fixed ; Falcon used a fixed number of cycles per VBL based 
on a 50 Hz refresh rate. Now that VIDEL_Get_VFreq() is used, this number 
of cycles per VBL can be adjusted to 50, 60 or 71 Hz, which fixes the 
DMA sound problem at 60 Hz.

Nicolas