[hatari-devel] Chaos AD problem : $fffffc02

[Laurent Sallafranque]

Hi,

>For me it works to the end (there are still several screens after the
>  blue-white tridi DNT logo), when using the old UAE core.


I've retested it twice, and it works to the end (with the new CPU).
Maybe I started with a non clean hatari.

Regards

Laurent



Le 13/06/2011 22:32, Eero Tamminen a écrit :
> Hi,
>
> On maanantai 13 kesäkuu 2011, Laurent Sallafranque wrote:
>> Thanks a lot Nicolas.
>>
>> Another demo that runs now ;)
>>
>> For me, it has freezed while showing the tridi DNT crew logo (near the
>> end of the demo I guess).
> For me it works to the end (there are still several screens after the
> blue-white tridi DNT logo), when using the old UAE core.
>
>
>> I agree, the sound is awfully noisy (one of the most noisy sounds I've
>> heard under hatari).
> Credits at the end say it's DSP sound.  :-)
>
>
>> Le 13/06/2011 15:30, Nicolas Pomarède a écrit :
>>> I committed a custom ikbd's handler for this demo. The 6301 code is in
>>> fact used to decode the demo's protection (it will take a few dozen of
>>> seconds, due to the slow transfer rate between cpu/acia and ikbd).
>>> During the demo, the ikbd remains disabled, so you can't exit unless
>>> you wait for the demo to end.
>>>
>>> Hopefully, the demo doesn't uses the 6301's code that was supposed to
>>> decode the byte. The 6301 code is using some kinds of 'sync decoding',
>>> by relying on the 6301's timer counter and the instructions cycle
>>> length.
> At what frequency that timer is running, are you saying that it could
> be using IKBD for synching the sound?
>
>
>>> I guess they had too much trouble making this works, so the
>>> decoder is much simpler (basically a XOR against an 8 bytes buffer)
>>> and some part of the code are useless.
>>>
>>> The demo is running correctly, except the sound which is really awful
>>> (as a huge fan of Hardwired, I had to turn off sound instead of
>>> listening to this :) )
>
> 	- Eero
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