Re: [hatari-devel] Data cache Issues?

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 08/06/2015 23:27, Eero Tamminen a écrit :

> Firestarter demo resets with data caches and shows following:
> ----------
> GEMDOS 0x3D Fopen("C:\FIRESTAR.PRG", read-only) at PC=0xFA002A
> GEMDOS 0x4B Pexec(7, 0x0, 0xf730, 0x0) at PC 0xFA002A
> GEMDOS 0x3E Fclose(64) at PC 0xFA002A
> prefetch mismatch pc=e03cac addr=3f8192 size=2 cache=20002 != mem=20ff6, d-
> cache error ?

Hi

Regarding firestarter, I extracted the packed program and ran it 
separately to be sure it was not related to the packer not flushing tha 
caches. This still crashed with a data cache mismatch, so packer is not 
the cause of the problem.

After some debugging, I found another bug in the write part of the 68030 
data cache when write allocate is off and data are not long word 
aligned. I tested a small/dirty patch and the demo now works, I will 
post a cleaner patch later.

Nicolas