Re: [hatari-devel] Binliner Preview (demo Falcon) works with Hatari 2.0

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 04/02/2017 à 14:50, Nicolas Pomarède a écrit :

> I think I found the cause for the crashes when using CE / prefetch mode,
> there's a bug in the prefetch code for some branch instructions
> (Bcc/DBcc) in WinUAE and this can cause instr-cache inconstancies when
> self modified code is used.
>
> With a quick fix, I can now run "A RH Positive" by TSCC, so I think it
> should fix most of the programs not working in CE/prefetch.
>
> I will report this to Toni and merge his official change into Hatari.

Fix is pushed in dev tree. The 68030 instr cache could get mixed with 
the 68020 cache (when using DBcc or Bcc instructions), which resulted in 
wrong prefetch and possible crash in program using self modified code or 
depending on the packer/unpacker used on these programs.

I checked that the following demos crashed before and are now working in 
prefetch / CE mode :

Echos, E.X. Illusion, Hmmm, Autowaschen Verboten, Dan's Lustiges 
Kinderfest, Warum, Cycedelic knockout, A Rh positive, Virtual City, Boom 
Preview

I was not able to test the other games in the compat list with similar 
problem (I don't have them), feel free to test them and update doc 
accordingly.

Nicolas