Re: [hatari-devel] UAE 68030 MMU + prefetch + instruction and data cache emulation

[Laurent Sallafranque <laurent.sallafranque@xxxxxxx>]

Hi,

Tested with hatari 2.0.0, MMU on, cycle exact and prefetch mode ON, 14 
Mo, Tos 4.04 FR, 24 bits mode addressind ON, no Patch timer_D, no boot 
faster by patching TOS...

I've removed my hatari.cfg before testing.


   X_tasie works well with 2.0.0 and MMU activated.

   _ (underscore) demo runs well too (until the 4th screen, but that's 
another problem.


With the latest source, both demos freeze (probably because of cpu <-> 
dsp timings as I can see when I debug).


To be noticed : these 2 demos runs only in MMU mode.

There's certainly a regression in the current version and MMU.

Regards
Laurent



Le 30/07/2017 à 13:19, Nicolas Pomarède a écrit :
> Le 30/07/2017 à 12:53, Laurent Sallafranque a écrit :
> > Hi,
> >
> > A few tests done with the new core :
> >
> > - rainbow 2 (use the MMU) : OK
> > - X_tasie demo (runs with MMU) : KO (probably because of CPU timings, 
> > as it's locked between DSP and CPU exchanges)
> > - _ demo : it seems to have regressed (both 68030 and non 68030 cpu). 
> > Before, it was running at least the 3 first screens before freezing, 
> > but now it freezes at start.
> >
> > - a few more demo tested, that are working, (they probably don't use 
> > the MMU). But with the 2 cycles instructions timings, they look 
> > strange, or music is full of glitches, ...
> >
> > I'll do some more tests.
> >
> > The best now for hatari would be to have 68030 + MMU + cycle exact 
> > (nevermind if the MMU instructions are not cycle exact, there's never 
> > involved in time critic loops).
> >
> > That's the Falcon standard CPU.
> >
> > Thanks for the new CPU Tony and Nicolas.
>
> hi
>
> thanks for the tests ; for those that don't work, did they work with 
> Hatari 2.0 and the same settings ? It's important to know if 
> regression is due to latest MMU changes or if it was already wrong 
> before.
>
> Nicolas