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

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

I tried Vincent's "FPS.TOS" program from:
https://listengine.tuxfamily.org/lists.tuxfamily.org/hatari-devel/2016/07/msg00012.html

It reports 60 Hz both with "rgb" and "vga" values for "--monitor" 
option, and 114 or 115 Hz with "mono" on (114 with EmuTOS, 115 with TOS4).


	- Eero

On 6.3.2024 12.44, Nicolas Pomarède wrote:
> 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