Re: [hatari-devel] Suspected Hatari 2.3.0 regression (prefetch?)

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 12/16/20 10:00 PM, Nicolas Pomarède wrote:
> Le 16/12/2020 à 18:59, Toni Wilen a écrit :
> > > Notice how this does *not* include the extra access. Which is why there
> > > is no bus error, anymore. Hence, the emulation is contradictory: only
> > > one function can be right about this.
> >
> > Fixed. For some reason extra fetch was also done if 68020 or 68030. (but
> > not when using MMU because it uses different MOVEM generator function
> > because it needs special handling for extremely annoying to emulate bus
> > error continuation situation)
>
> thanks ; patch added to Hatari.
>
> Please check that delmpaint is working better now

Besides it now working again without MMU, this
also seems to fix its ST/STE compat palette mode
colors with EmuTOS, both without *and* with MMU.

How latter can happen, wasn't the bug fixed only
for code path that is used without MMU?


Besides Delmpaint, this change fixes also
Confusion demo starting to need MMU with
Hatari v2.3.  I think there may actually be
quite a few other programs impacted by this...

(I'll be doing some checks and updating
compatibility doc & release notes in next
few days.)


	- Eero