Re: [hatari-devel] New SYNC release. New Hatari bugs found ;)

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 12/03/2017 07:41 PM, Nicolas Pomarède wrote:
> Le 03/12/2017 à 17:37, Troed Sångberg a écrit :
> > Not sure I follow :) It works on real hw. Thus there must be an issue 
> > in the emulation even if Toni does not know about it.
> >
> > (When tracing it I must confess that it didn't seem like a cache 
> > issue, but I'm not absolutely certain)
> >
> > UPX, latest version, is the packer used. I don't know how much they 
> > test on 68030.
>
> Ah, I forgot you tested it on real HW :(
>
> Well, this will need more investigations then.
>
> I think it's a cache problem, because at the time I see the crash on 
> Hatari, the opcode pointed by PC is a "swap", but we get a "bus write" 
> error, which makes no sense for a swap. This is often what happens in 
> cache cases : the disasm shows the content of the real memory (a swap), 
> but the cached/prefetched values used internally to get the opcode are 
> not the same.

I guess the should be some debugger command to show what given
address content is in the instruction & data-caches and in RAM.

If you add function to WinUAE CPU core to do that, I'll add
the debugger command to call it.


	- Eero