[hatari-devel] some falcon registers questions

Laurent Sallafranque laurent.sallafranque at free.fr
Tue Feb 1 23:58:23 CET 2011


Could you tell me more (register involved, effect, ...) or send me a 
little PRG which would show the problem ?

Laurent


Le 01/02/2011 23:54, Miro Kropác(ek a écrit :
>
>     But are those regs used when falcon is in vga mode ? If they're
>     only used when falcon is emulating low/med STE video mode, then I
>     think we can use the code already present in video.c
>
> I did my tests on 320x288x8bit.
>
>     In all cases, I think it will give better results to first emulate
>     videl's own register instead of focusing on STE compatibility mode
>     (this can be emulated later by refactoring code in video.c). Most
>     falcon demos certainly don't use the limited resolution of the
>     STE, but more likely some VGA resolution.
>
> Guys when you'll be refactoring, please don't forget to remove 
> emulation of that STE scrolling shifter bug in Falcon mode -- I was 
> very surprised when my code didn't work in STE mode but did work on 
> real Falcon ;-) /I didn't try Falcon mode, though. Just to be sure by 
> some copy&paste this shifter bug wont slip into Falcon code/
>
> -- 
> MiKRO / Mystic Bytes
> http://mikro.atari.org
>
>
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