[hatari-devel] Blitter interrupt CPU usage

[Jean-Baptiste Berlioz]

> According to the Compatibility list, the problematic cases are:
> 
> * E.P.S.S. Demo by Unit 17:
>    http://www.pouet.net/prod.php?which=30912
>    -> bottom border isn't right
> 
> * Extreme Rage by Anatomica:
>   http://pouet.net/prod.php?which=15428
> 
> * Jam-Cols by Inner Circuit Explorers:
>   http://www.pouet.net/prod.php?which=31452
> 
> * RGBeast by Aggression:
>   http://pouet.net/prod.php?which=29355
>   -> Not sure whether the issues come from blitter or overscan.
>        (I don't have real STE, but the Youtube video of this looks
>        impressive!)


I'm afraid all these demos use synched code. As i said (and used in my 
last demo), the execution of some CPU instructions can overlap partially 
with the blitter (it depends on how the instruction fetch words from the 
bus). I'll have to disassemble these demos to check how they start the 
blitter and what instruction come just after, to be sure i'm not missing 
something.