[hatari-devel] Twelve demo bombs with fast-forward and freezes on Falcon?

[Laurent Sallafranque]

Hi,

Also, it's supposed to work on monochrome resolution, but for me it bus
errors there:
   M68000 Bus Error reading at address $ff8901.
   M68000 Bus Error writing at address $ff8901.


This is interresting.

I've already told about this problem a few month ago, but for Falcon.
There are some programs which are giving the same error at exactly the 
same address $ff8901.

Maybe this problem is not related to monochrom only, as I never test in 
monochrome.

Regards

Laurent


Le 29/05/2011 01:21, Eero Tamminen a écrit :
> Hi,
>
> On sunnuntai 29 toukokuu 2011, Eero Tamminen wrote:
>> I just tried Twelve demo:
>> 	http://pouet.net/prod.php?which=56966
>>
>> ST version sounds fine, but I think with STE emulation the sound
>> isn't right (or at least it doesn't sound the same as with ST emu).
>>
>>
>> Additionally, if I use "--fastforward yes", it crashes at startup to:
>> Bus error bget at 00400000
>>
>> I remember there were problems also with other demos when using
>> fast-forward with DMA sound.   Any idea yet why?
> Now I tried also Hextracker:
> 	http://dhs.nu/news.php?t=single&ID=750
>
> And it suffers from the same STE issue.
>
>
> Also, it's supposed to work on monochrome resolution, but for me it bus
> errors there:
>    M68000 Bus Error reading at address $ff8901.
>    M68000 Bus Error writing at address $ff8901.
>
> I.e. when setting Monochrome monitor, it tries to read DMA registers
> on STF...  I guess that's a bug in the Hextracker.
>
> Twelve has same issue except that after that, I get also:
> ---
> Your Atari program just did something terribly stupid:
> BusErrMem_xlate($99e400fc)
> Illegal ROMmem bput at 99fa0106
> M68000 Bus Error writing at address $99fa0106.
> ---
>
> If I use STE+Mono, Hextracker works otherwise fine, but VU-meters&
> digiscope write all over the screen and sound sounds crap.  Could this be
> Hatari monochrome emulation issue?
>
> (With STE + Mono, Twelve just exits after a long wait.)
>
>
>> With Falcon (old UAE CPU) emulation, Twelve gets stuck in the beginning
>> (with or without fast-forward).  "profile" command tells that it's
>> looping here:
> ...
>> I.e. the code loops on testing Microwire data register for a value it
>> doesn't get.  Is the demo supposed to work on Falcon?
> Hextracker on Falcon has exactly the same issue.
>
> One more thing, the disk A led is ON also while these are stuck in Falcon,
> I have no idea whether that's relevant though.
>
>
> 	- Eero
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