Re: [hatari-devel] Recent regression (commit 527b68f6)

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 07/02/2022 à 16:30, Eero Tamminen a écrit :
> Hi,
>
> On 5.2.2022 19.40, Nicolas Pomarède wrote:
> > this is likely the same bug that Eero reported in "freeze in mfp / 
> > interrrupt code" and similar to the one I saw too when booting with 
> > tos 1.04.
> >
> >  From what I see, it's related to TOS timer D that runs very fast at 
> > boot with earlier tos version (timer ctrl=1 data=2) and this messes 
> > with new mfp/cycint code. A possible fix is to enable the option in 
> > system "patch timer d" while waiting for a proper fix in the code.
>
> I'm pretty sure my hang was with that enabled.
>
> (I have it enabled by default because I do not run anything needing that 
> frequent timer-D ints.  E.g. Hatari compatibility list has only three 
> games that need it.)

there could be many causes to the hang you saw and having timer-d at 
boot caused the problem Christian and I saw.

But the fix I made is not limited to timer D only, it's just that the 
case of timer d at boot was very reproducible and other combinations of 
timer could cause the same hang, but less frequently.
If you can't reproduce your bug in maxymiser, then I assume it was the 
same cause.

Nicolas