Re: [hatari-devel] Possible WinUAE CPU ST emulation issue

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 25/03/2015 21:10, Eero Tamminen a écrit :
> Hi,
>
> Game here:
> http://atari-forum.com/viewtopic.php?f=101&t=24583&start=1525#p270898
>
> Starts fine with OldUAE CPU core, but bombs right at start with WinUAE CPU
> core.

This works with WinUAE cpu only if you use the "more 
compatible/prefetch" mode. The games is doing some kind of decryption 
based on the content of the video counter, which requires correct cycles 
when accessing the shifter.

For now, this is not handled in WinUAE's "cycle exact" mode, so it's the 
same issue that plasma/overscan that don't work yet when using CE mode, 
this is still work in progress.

Nicolas